/* ═══════════════════════════════════════════════════
   TGA DIGITAL – STYLES.CSS
   Tecnólogo en Gestión Administrativa · SENA
═══════════════════════════════════════════════════ */

/* ──── COMPARATIVA QBE VS SQL ──── */
.comparison-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin: 1.5rem 0;
}

.comparison-context {
  background: var(--c-glass-bg);
  border-left: 4px solid var(--c-primary);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--c-glass-brd);
  border-left-width: 4px;
}

.comparison-breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.breakdown-card {
  background: var(--c-glass-bg);
  border: 1px solid var(--c-glass-brd);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition-spring);
}

.breakdown-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--c-primary);
  box-shadow: var(--shadow-md);
}

.breakdown-card h4 {
  color: var(--c-primary);
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.breakdown-card p {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--c-text-2);
}

.breakdown-card code {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  color: var(--c-secondary);
  font-family: var(--font-mono);
}

.premium-comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-glass-brd);
  background: var(--c-surface);
  box-shadow: var(--shadow-lg);
}

.premium-table {
  width: 100%;
  border-collapse: collapse;
}

.premium-table th,
.premium-table td {
  padding: 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
}

.premium-table th {
  background: var(--c-surface2);
  color: var(--c-primary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.premium-table tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.premium-table td strong {
  color: var(--c-text);
}

/* ──── DESIGN TOKENS ──── */
:root {
  --c-bg: #0a0f1e;
  --c-surface: #111827;
  --c-surface2: #1a2236;
  --c-border: rgba(255, 255, 255, 0.08);
  --c-text: #e8eaf2;
  --c-text-2: #9aa3b8;
  --c-text-3: #5d6a85;
  --c-primary: #39d0b8;
  --c-secondary: #5b6cff;
  --c-accent: #a855f7;
  --c-warn: #f59e0b;
  --c-success: #22c55e;
  --c-danger: #ef4444;
  --c-glass-bg: rgba(255, 255, 255, 0.03);
  --c-glass-brd: rgba(255, 255, 255, 0.12);
  --c-glass-brd-hover: rgba(255, 255, 255, 0.25);
  --gradient-1: linear-gradient(135deg, #39d0b8, #5b6cff);
  --gradient-2: linear-gradient(135deg, #5b6cff, #a855f7);
  --gradient-3: linear-gradient(135deg, #a855f7, #f59e0b);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 80px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px rgba(57, 208, 184, 0.3);
  --shadow-error: 0 8px 30px rgba(239, 68, 68, 0.25);
  --shadow-success: 0 8px 30px rgba(34, 197, 94, 0.25);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --nav-h: 64px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* SQL Semantic Colors (Dark Mode Default) */
  --c-sql-ddl: #3b82f6;
  /* Blue 500 */
  --c-sql-dml: #10b981;
  /* Emerald 500 */
  --c-sql-dql: #a855f7;
  /* Purple 500 */
}

[data-theme="light"] {
  --c-bg: #f8fafc;
  --c-surface: #ffffff;
  --c-surface2: #f1f5f9;
  --c-border: rgba(15, 23, 42, 0.08);
  --c-text: #0f172a;
  --c-text-2: #334155;
  --c-text-3: #64748b;
  --c-glass-bg: rgba(255, 255, 255, 0.82);
  --c-glass-brd: rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 20px 50px -12px rgba(15, 23, 42, 0.12);

  /* SQL Semantic Colors (Light Mode Formal) */
  --c-sql-ddl: #2563eb;
  /* Blue 600 */
  --c-sql-dml: #059669;
  /* Emerald 600 */
  --c-sql-dql: #7c3aed;
  /* Violet 600 */
}

[data-theme="light"] .module-header--access {
  background: linear-gradient(135deg, rgba(57, 208, 184, 0.08), rgba(91, 108, 255, 0.04));
  border-top-color: rgba(57, 208, 184, 0.2);
}

[data-theme="light"] .module-header--sql {
  background: linear-gradient(135deg, rgba(91, 108, 255, 0.08), rgba(168, 85, 247, 0.04));
  border-top-color: rgba(91, 108, 255, 0.2);
}

[data-theme="light"] .module-header--pq {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.08), rgba(245, 158, 11, 0.04));
  border-top-color: rgba(168, 85, 247, 0.2);
}

[data-theme="light"] .module-header--pbi {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(57, 208, 184, 0.04));
  border-top-color: rgba(245, 158, 11, 0.2);
}

/* ──── RESET & BASE ──── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.8;
}

img {
  max-width: 100%;
  display: block;
}

ul {
  list-style: none;
}

button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  background: none;
}

input,
select {
  font-family: var(--font-sans);
}

/* ──── SPLASH ──── */
.splash-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.splash-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.splash-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.splash-logo {
  animation: splashPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes splashPop {
  from {
    transform: scale(0.5);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

.splash-title {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.splash-sub {
  color: var(--c-text-2);
  font-size: 0.9rem;
}

.splash-bar {
  width: 200px;
  height: 4px;
  background: var(--c-surface2);
  border-radius: 99px;
  overflow: hidden;
}

.splash-bar-fill {
  height: 100%;
  background: var(--gradient-1);
  border-radius: 99px;
  animation: splashLoad 1.8s ease forwards;
}

@keyframes splashLoad {
  from {
    width: 0;
  }

  to {
    width: 100%;
  }
}

/* ──── CONTAINER ──── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ──── NAVBAR ──── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(10, 15, 30, 0.85);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--c-border);
  transition: background var(--transition);
}

[data-theme="light"] .navbar {
  background: rgba(248, 250, 252, 0.85);
}

.nav-inner {
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--c-text);
}

.brand-accent {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-text-2);
  transition: all var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--c-text);
  background: var(--c-glass-bg);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--gradient-1);
  border-radius: 99px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-2);
  background: var(--c-glass-bg);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
}

.btn-icon:hover {
  color: var(--c-text);
  background: var(--c-surface2);
}

.progress-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px 4px 4px;
  background: var(--c-glass-bg);
  border: 1px solid var(--c-border);
  border-radius: 99px;
}

.progress-ring {
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: var(--c-border);
}

.ring-fill {
  fill: none;
  stroke: url(#pgGrad);
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s ease;
}

.progress-pct {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--c-primary);
  min-width: 28px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--c-text-2);
  border-radius: 99px;
  transition: all var(--transition);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 24px 16px;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}

.mobile-menu.open {
  display: flex;
}

.mobile-link {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--c-text-2);
  font-weight: 500;
  transition: all var(--transition);
}

.mobile-link:hover {
  background: var(--c-glass-bg);
  color: var(--c-text);
}

/* ──── SECTIONS ──── */
.section {
  padding: 100px 0 80px;
}

.section:first-child {
  padding-top: calc(var(--nav-h) + 60px);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--c-text-2);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ──── HERO ──── */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
  animation: floatUp linear infinite;
}

@keyframes floatUp {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }

  10% {
    opacity: 0.2;
  }

  90% {
    opacity: 0.1;
  }

  100% {
    transform: translateY(-10vh) scale(1);
    opacity: 0;
  }
}

.hero-container {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(57, 208, 184, 0.12);
  border: 1px solid rgba(57, 208, 184, 0.3);
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 28px;
  animation: fadeInDown 0.6s ease 0.3s both;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-primary);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(1.4);
  }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
  animation: fadeInDown 0.6s ease 0.5s both;
}

.gradient-text {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--c-text-2);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
  animation: fadeInDown 0.6s ease 0.7s both;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
  animation: fadeInDown 0.6s ease 0.9s both;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  justify-content: center;
  background: var(--c-glass-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--c-glass-brd);
  border-radius: var(--radius-lg);
  padding: 20px 36px;
  animation: fadeInDown 0.6s ease 1.1s both;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: 0 28px;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--c-text-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--c-border);
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.scroll-dot {
  width: 6px;
  height: 6px;
  background: var(--c-primary);
  border-radius: 50%;
  animation: scrollBounce 1.5s ease infinite;
}

@keyframes scrollBounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(8px);
  }
}

/* ──── BUTTONS ──── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: 0 4px 24px rgba(57, 208, 184, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(57, 208, 184, 0.5);
}

.btn-ghost {
  background: var(--c-glass-bg);
  color: var(--c-text);
  border: 1px solid var(--c-glass-brd);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--c-glass-brd-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: var(--c-surface2);
  color: var(--c-text);
  border: 1px solid var(--c-border);
}

.btn-secondary:hover {
  border-color: var(--c-primary);
}

.btn-accent {
  background: var(--gradient-2);
  color: #fff;
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(91, 108, 255, 0.4);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-xs {
  padding: 4px 10px;
  font-size: 0.78rem;
  border-radius: 6px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
}

/* ──── PIPELINE ──── */
.pipeline-section {
  background: var(--c-surface);
}

.pipeline-track {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.pipeline-step {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  background: var(--c-glass-bg);
  border: 1px solid var(--c-glass-brd);
  border-radius: var(--radius-lg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  cursor: pointer;
  position: relative;
  min-width: 210px;
  color: inherit;
}

.pipeline-step:hover {
  border-color: var(--c-glass-brd-hover);
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  background: rgba(255, 255, 255, 0.05);
}

.step-icon {
  font-size: 2rem;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.step-icon--access {
  background: rgba(57, 208, 184, 0.15);
}

.step-icon--sql {
  background: rgba(91, 108, 255, 0.15);
}

.step-icon--pq {
  background: rgba(168, 85, 247, 0.15);
}

.step-icon--pbi {
  background: rgba(245, 158, 11, 0.15);
}

.step-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.step-phase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2px;
}

.step-phase {
  font-size: 0.72rem;
  color: var(--c-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.step-pct {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--c-primary);
}

.step-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 2px 0;
}

.step-tool {
  font-size: 0.82rem;
  color: var(--c-text-2);
}

.step-progress-track {
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 99px;
  margin-top: 8px;
  overflow: hidden;
  width: 100%;
}

[data-theme="light"] .step-progress-track {
  background: rgba(0, 0, 0, 0.1);
}

.step-progress-fill {
  height: 100%;
  background: var(--gradient-1);
  transition: width 0.6s ease;
}

.step-progress-fill--sql {
  background: var(--gradient-2);
}

.step-progress-fill--pq {
  background: var(--gradient-3);
}

.step-progress-fill--pbi {
  background: linear-gradient(135deg, #f59e0b, #39d0b8);
}

.step-badge {
  position: absolute;
  top: -10px;
  right: 14px;
  background: var(--gradient-1);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 99px;
}

.pipeline-arrow {
  color: var(--c-text-3);
  flex-shrink: 0;
}

.data-flow {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 32px;
}

.flow-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-2);
  white-space: nowrap;
}

.flow-label--end {
  color: var(--c-warn);
}

.flow-pipe {
  flex: 1;
  height: 6px;
  background: var(--c-surface2);
  border-radius: 99px;
  position: relative;
  overflow: hidden;
}

.flow-particle {
  position: absolute;
  top: 0;
  left: -30px;
  width: 30px;
  height: 100%;
  background: var(--gradient-1);
  border-radius: 99px;
  animation: flowMove 2.4s linear infinite;
}

@keyframes flowMove {
  from {
    left: -10%
  }

  to {
    left: 110%
  }
}

/* ──── CONCEPTS ──── */
.concepts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.concept-card {
  background: var(--c-glass-bg);
  border: 1px solid var(--c-glass-brd);
  border-radius: var(--radius-lg);
  padding: 28px;
  -webkit-backdrop-filter: blur(16px);
  /* Fix Safari lint error */
  backdrop-filter: blur(16px);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  cursor: pointer;
  transform-style: preserve-3d;
}

.concept-card:hover,
.concept-card:focus {
  border-color: var(--c-primary);
  transform: translateY(-8px) scale(1.02) perspective(1000px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  outline: none;
  background: rgba(255, 255, 255, 0.05);
}

.concept-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.concept-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.concept-short {
  color: var(--c-text-2);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.concept-detail {
  display: none;
  font-size: 0.88rem;
  color: var(--c-text-2);
  line-height: 1.7;
  border-top: 1px solid var(--c-border);
  padding-top: 14px;
  margin-top: 14px;
}

.concept-detail.open {
  display: block;
  animation: fadeIn 0.3s ease;
}

.concept-detail code {
  background: var(--c-surface2);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.82em;
  color: var(--c-primary);
}

.concept-detail ul {
  padding-left: 20px;
  list-style: disc;
}

.concept-toggle {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--c-primary);
  font-weight: 600;
  transition: opacity var(--transition);
}

.concept-toggle:hover {
  opacity: 0.7;
}

/* ──── MODULE SECTIONS ──── */
.module-header {
  padding: 60px 0 36px;
  margin-top: 64px;
  position: relative;
  overflow: hidden;
}

.module-header::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.4;
  pointer-events: none;
  background: radial-gradient(ellipse 60% 80% at 10% 50%, currentColor 0%, transparent 70%);
  color: var(--module-glow, #39d0b8);
}

.module-header--access {
  --module-glow: #39d0b8;
  background: linear-gradient(135deg, rgba(57, 208, 184, 0.14), rgba(91, 108, 255, 0.06));
  border-top: 1px solid rgba(57, 208, 184, 0.3);
  box-shadow: 0 1px 0 rgba(57, 208, 184, 0.15);
}

.module-header--sql {
  --module-glow: #5b6cff;
  background: linear-gradient(135deg, rgba(91, 108, 255, 0.14), rgba(168, 85, 247, 0.06));
  border-top: 1px solid rgba(91, 108, 255, 0.3);
  box-shadow: 0 1px 0 rgba(91, 108, 255, 0.15);
}

.module-header--pq {
  --module-glow: #a855f7;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.14), rgba(245, 158, 11, 0.06));
  border-top: 1px solid rgba(168, 85, 247, 0.3);
  box-shadow: 0 1px 0 rgba(168, 85, 247, 0.15);
}

.module-header--pbi {
  --module-glow: #f59e0b;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.14), rgba(57, 208, 184, 0.06));
  border-top: 1px solid rgba(245, 158, 11, 0.3);
  box-shadow: 0 1px 0 rgba(245, 158, 11, 0.15);
}

.module-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 16px;
  background: var(--gradient-1);
  color: #fff;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
  box-shadow: 0 4px 12px rgba(57, 208, 184, 0.3);
}

.module-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 8px;
  position: relative;
}

.module-subtitle {
  color: var(--c-text-2);
  font-size: 1rem;
  margin-bottom: 20px;
}

.module-progress-bar {
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 99px;
  overflow: hidden;
  max-width: 400px;
}

.module-progress-fill {
  height: 100%;
  background: var(--gradient-1);
  border-radius: 99px;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px rgba(57, 208, 184, 0.5);
}

.module-body {
  padding: 44px 24px 64px;
}

/* ──── TABS ──── */
.tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 36px;
  overflow-x: auto;
  padding-bottom: 0;

  @supports (scrollbar-width: none) {
    scrollbar-width: none;
  }

  -ms-overflow-style: none;
  /* IE and Edge */
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  padding: 11px 20px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-text-2);
  transition: all 0.2s ease;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  position: relative;
}

.tab::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-1);
  border-radius: 99px;
  transition: width 0.3s ease, left 0.3s ease;
}

.tab:hover {
  color: var(--c-text);
  background: rgba(57, 208, 184, 0.04);
}

.tab:hover::after {
  width: 60%;
  left: 20%;
}

.tab.active {
  color: var(--c-primary);
  background: rgba(57, 208, 184, 0.06);
}

.tab.active::after {
  width: 100%;
  left: 0;
  background: var(--gradient-1);
}

.tab-panel {
  display: none;
  animation: fadeIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px)
  }

  to {
    opacity: 1;
    transform: translateY(0)
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-16px)
  }

  to {
    opacity: 1;
    transform: translateY(0)
  }
}

/* ──── THEORY CARDS ──── */
.theory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.theory-card {
  background: var(--c-surface2);
  border: 1px solid var(--c-glass-brd);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.theory-card:hover {
  border-color: rgba(57, 208, 184, 0.25);
  box-shadow: var(--shadow-sm);
}

.theory-card--full {
  grid-column: 1 / -1;
}

.theory-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--c-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.theory-card h3::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--gradient-1);
  border-radius: 99px;
  margin-right: 2px;
  flex-shrink: 0;
}

.theory-card p {
  color: var(--c-text-2);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

/* ──── INFO BOXES ──── */
.info-box {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  margin-top: 14px;
  font-size: 0.88rem;
  line-height: 1.6;
}

.info-box p {
  margin: 0;
}

.info-box--tip {
  background: rgba(57, 208, 184, 0.08);
  border: 1px solid rgba(57, 208, 184, 0.2);
}

.info-box--info {
  background: rgba(91, 108, 255, 0.08);
  border: 1px solid rgba(91, 108, 255, 0.2);
}

.info-box--warning {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.info-box--success {
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.info-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ──── COMPONENTS LIST ──── */
.component-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.component-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.comp-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  width: 36px;
  text-align: center;
}

.component-item strong {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 2px;
}

.component-item p {
  margin: 0;
  color: var(--c-text-2);
  font-size: 0.85rem;
}

/* ──── DATATYPES GRID ──── */
.datatypes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 8px;
}

.datatype-item {
  background: var(--c-glass-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition);
}

.datatype-item:hover {
  border-color: var(--c-secondary);
}

.dt-icon {
  font-size: 1.2rem;
}

.dt-name {
  font-size: 0.88rem;
  font-weight: 700;
}

.dt-desc {
  font-size: 0.78rem;
  color: var(--c-text-2);
}

/* ──── SQL SEMANTIC CLASSES ──── */
.border-l-custom-ddl {
  border-left-color: var(--c-sql-ddl) !important;
}

.border-l-custom-dml {
  border-left-color: var(--c-sql-dml) !important;
}

.border-l-custom-dql {
  border-left-color: var(--c-sql-dql) !important;
}

.datatype-item--ddl {
  background: rgba(59, 130, 246, 0.08);
  /* Blue 500 8% */
  border-color: rgba(59, 130, 246, 0.3);
  /* Blue 500 30% */
}

[data-theme="light"] .datatype-item--ddl {
  background: rgba(37, 99, 235, 0.08);
  /* Blue 600 8% */
  border-color: rgba(37, 99, 235, 0.3);
  /* Blue 600 30% */
}

.datatype-item--dml {
  background: rgba(16, 185, 129, 0.08);
  /* Emerald 500 8% */
  border-color: rgba(16, 185, 129, 0.3);
  /* Emerald 500 30% */
}

[data-theme="light"] .datatype-item--dml {
  background: rgba(5, 150, 105, 0.08);
  /* Emerald 600 8% */
  border-color: rgba(5, 150, 105, 0.3);
  /* Emerald 600 30% */
}

.datatype-item--dql {
  background: rgba(168, 85, 247, 0.08);
  /* Purple 500 8% */
  border-color: rgba(168, 85, 247, 0.3);
  /* Purple 500 30% */
}

[data-theme="light"] .datatype-item--dql {
  background: rgba(124, 58, 237, 0.08);
  /* Violet 600 8% */
  border-color: rgba(124, 58, 237, 0.3);
  /* Violet 600 30% */
}

/* ──── SIMULATOR ──── */
.simulator-container {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.sim-header {
  margin-bottom: 24px;
}

.sim-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.sim-header p {
  color: var(--c-text-2);
  font-size: 0.9rem;
}

.builder-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.builder-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-text-2);
  white-space: nowrap;
}

.builder-input {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  color: var(--c-text);
  font-size: 0.9rem;
  flex: 1;
  min-width: 160px;
  transition: border-color var(--transition);
}

.builder-input:focus {
  outline: none;
  border-color: var(--c-primary);
}

.fields-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
  margin-bottom: 16px;
}

.fields-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.fields-table th {
  background: var(--c-bg);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--c-text-2);
  border-bottom: 1px solid var(--c-border);
  white-space: nowrap;
}

.fields-table td {
  padding: 8px 14px;
  border-bottom: 1px solid var(--c-border);
}

.fields-table tr:last-child td {
  border-bottom: none;
}

.fields-table tr:hover td {
  background: var(--c-glass-bg);
}

.pk-checkbox {
  width: 16px;
  height: 16px;
  accent-color: var(--c-warn);
  cursor: pointer;
}

.field-select,
.field-input {
  width: 100%;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 6px;
  padding: 6px 10px;
  color: var(--c-text);
  font-size: 0.85rem;
}

.field-select:focus,
.field-input:focus {
  outline: none;
  border-color: var(--c-primary);
}

.delete-row-btn {
  background: none;
  border: none;
  color: var(--c-text-3);
  font-size: 1rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all var(--transition);
}

.delete-row-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--c-danger);
}

/* ──── SQL PREVIEW ──── */
.sql-preview {
  background: #0d1117;
  border: 1px solid rgba(57, 208, 184, 0.2);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 16px;
}

.sql-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: rgba(57, 208, 184, 0.06);
  border-bottom: 1px solid rgba(57, 208, 184, 0.15);
}

.sql-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.sql-code-wrapper {
  position: relative;
  margin: 1.25rem 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.sql-code {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: #a8d8a8;
  overflow-x: auto;
  white-space: pre;
  background: #0d1117;
}

.sql-code--dark {
  background: #0d1117;
  color: #a8d8a8;
  padding: 20px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.83rem;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
}

.btn-copy {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  color: var(--c-text-2);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: 10;
}

.btn-copy:hover {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
  transform: translateY(-1px);
}

.btn-copy.success {
  background: var(--c-success);
  color: #fff;
  border-color: var(--c-success);
}


/* ──── PRESET BAR ──── */
.preset-bar {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 16px;
  flex-wrap: wrap;
}

.preset-label {
  font-size: 0.8rem;
  color: var(--c-text-2);
  font-weight: 600;
}

.preset-btn {
  padding: 5px 14px;
  border-radius: 99px;
  background: var(--c-glass-bg);
  border: 1px solid var(--c-border);
  color: var(--c-text-2);
  font-size: 0.8rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}

.preset-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

/* ──── RELATIONS CANVAS ──── */

.relations-canvas {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  min-height: 320px;
  position: relative;
  overflow: auto;
  margin-bottom: 20px;
}

.rel-table {
  position: absolute;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  min-width: 160px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}

.rel-table-header {
  background: var(--gradient-1);
  color: #fff;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: move;
}

.rel-table-field {
  padding: 6px 14px;
  font-size: 0.82rem;
  color: var(--c-text-2);
  border-top: 1px solid var(--c-border);
  display: flex;
  gap: 8px;
  align-items: center;
}

.rel-table-field.pk {
  color: var(--c-warn);
  font-weight: 700;
}

.rel-table-field.fk {
  color: var(--c-secondary);
}

.rel-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* ──── INTEGRITY DEMO ──── */
.integrity-demo {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 20px;
}

.integrity-demo h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.integrity-test p {
  color: var(--c-text-2);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.integrity-form {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

/* ──── INTEGRITY DEMO PREMIUM ──── */
.integrity-demo {
  margin-top: 40px;
  padding: 32px;
  background: rgba(255, 255, 255, 0.03);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--c-glass-brd);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.integrity-demo::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-2);
}

.integrity-demo h4 {
  font-size: 1.25rem;
  margin-bottom: 20px;
  color: var(--c-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.integrity-test p {
  color: var(--c-text-2);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.integrity-form {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
}

.integrity-form label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--c-text-2);
}

.integrity-result {
  margin-top: 24px;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 500;
  display: none;
  align-items: center;
  gap: 12px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  animation: slideInUp 0.4s var(--transition-spring) forwards;
}

.integrity-result.error {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ff8e8e;
  box-shadow: var(--shadow-error);
  display: flex;
  animation: shake 0.5s ease-in-out forwards;
}

.integrity-result.success {
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #8effaa;
  box-shadow: var(--shadow-success);
  display: flex;
}

.integrity-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ──── ANIMATIONS ──── */
@keyframes shake {

  0%,
  100% {
    transform: translateX(0);
  }

  20%,
  60% {
    transform: translateX(-6px);
  }

  40%,
  80% {
    transform: translateX(6px);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    filter: blur(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

.star-legend {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  background: var(--c-glass-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--c-text-2);
  font-weight: 600;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  box-shadow: 0 0 10px currentColor;
}

.dot.fact {
  background: var(--c-warn);
  color: rgba(245, 158, 11, 0.4);
}

.dot.dim {
  background: var(--c-secondary);
  color: rgba(91, 108, 255, 0.4);
}

@media (max-width: 768px) {
  .star-canvas {
    grid-template-areas:
      "dim-fecha dim-prod"
      "st-fact st-fact"
      "dim-region dim-cliente";
    grid-template-columns: 1fr 1fr;
    padding: 24px;
    gap: 24px;
    min-height: 0;
  }

  .star-model-layout {
    grid-template-columns: 1fr;
  }
}

/* ──── JOINS VISUAL ──── */
.join-comparison {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.join-item {
  flex: 1;
  min-width: 200px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}

.join-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 12px 0 6px;
}

.join-item p {
  font-size: 0.85rem;
  color: var(--c-text-2);
  margin-bottom: 8px;
}

.join-item code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--c-surface2);
  padding: 4px 8px;
  border-radius: 6px;
  display: block;
}

.venn-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 60px;
  gap: -20px;
}

.venn-a,
.venn-b {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  opacity: 0.4;
}

.venn-a {
  background: var(--c-secondary);
  margin-right: -15px;
  z-index: 1;
}

.venn-b {
  background: var(--c-primary);
  margin-left: -15px;
}

.venn-inner .venn-intersection {
  width: 20px;
  height: 40px;
  background: #fff;
  z-index: 2;
  opacity: 0.8;
}

.venn-a--active {
  opacity: 0.8;
}

.venn-int--active {
  opacity: 0.5;
}

/* ──── QBE MOCKUP ──── */
.compare-view {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media(max-width:680px) {
  .compare-view {
    grid-template-columns: 1fr;
  }
}

.compare-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-text-2);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.qbe-mockup {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.qbe-tables {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.qbe-table {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  min-width: 120px;
  overflow: hidden;
}

.qbe-table-header {
  background: var(--gradient-1);
  color: #fff;
  padding: 6px 10px;
  font-size: 0.78rem;
  font-weight: 700;
}

.qbe-field {
  padding: 5px 10px;
  font-size: 0.78rem;
  color: var(--c-text-2);
  border-top: 1px solid var(--c-border);
}

.qbe-field--pk {
  color: var(--c-warn);
}

.qbe-field--fk {
  color: var(--c-secondary);
}

.qbe-join-line {
  width: 30px;
  height: 2px;
  background: var(--gradient-1);
  align-self: center;
}

.qbe-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.qbe-col {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 6px;
  padding: 6px;
  font-size: 0.75rem;
  color: var(--c-text-2);
  display: flex;
  justify-content: space-between;
}

/* ──── ETL FLOW ──── */
.benefit-tag {
  background: rgba(57, 208, 184, 0.1);
  color: var(--c-primary);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid rgba(57, 208, 184, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.benefit-tag:hover {
  background: rgba(57, 208, 184, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(57, 208, 184, 0.15);
}

.card-header-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 8px rgba(57, 208, 184, 0.3));
}

.etl-flow {
  display: flex;
  align-items: stretch;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.etl-step {
  flex: 1;
  min-width: 180px;
  padding: 24px;
  border-radius: var(--radius-md);
  text-align: center;
  position: relative;
  transition: all var(--transition-spring);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.etl-step:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.etl-step-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 99px;
  color: var(--c-text-2);
}

.etl-step--extract {
  background: linear-gradient(180deg, rgba(57, 208, 184, 0.1) 0%, rgba(57, 208, 184, 0.02) 100%);
  border: 1px solid rgba(57, 208, 184, 0.2);
}

.etl-step--transform {
  background: linear-gradient(180deg, rgba(91, 108, 255, 0.1) 0%, rgba(91, 108, 255, 0.02) 100%);
  border: 1px solid rgba(91, 108, 255, 0.2);
}

.etl-step--load {
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.02) 100%);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.etl-step-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  transition: transform var(--transition-spring);
}

.etl-step:hover .etl-step-icon {
  transform: scale(1.1) rotate(5deg);
}

.etl-step h4 {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
  color: var(--c-text);
}

.etl-step-desc {
  font-size: 0.75rem;
  color: var(--c-primary);
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.etl-step ul {
  list-style: none;
  font-size: 0.8rem;
  color: var(--c-text-2);
  text-align: left;
  width: 100%;
}

.etl-step ul li {
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.etl-step ul li::before {
  content: "→";
  color: var(--c-primary);
  font-weight: 800;
}

.etl-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-3);
  opacity: 0.5;
}

.etl-arrow svg {
  width: 20px;
  height: 20px;
}

/* ──── KPI GRID ──── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.kpi-card {
  background: var(--c-bg);
  border: 1px solid var(--kpi-color, var(--c-border));
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
  transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.35s ease;
  position: relative;
  overflow: hidden;
}

.kpi-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--kpi-color, transparent) 0%, transparent 70%);
  opacity: 0.06;
  pointer-events: none;
}

.kpi-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3), 0 0 12px color-mix(in srgb, var(--kpi-color, #39d0b8) 40%, transparent);
}

.kpi-value {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--kpi-color);
  margin-bottom: 4px;
}

.kpi-label {
  font-size: 0.75rem;
  color: var(--c-text-2);
  font-weight: 600;
  margin-bottom: 6px;
}

.kpi-trend {
  font-size: 0.78rem;
  color: var(--c-success);
  font-weight: 700;
}

/* ──── STAR MODEL ──── */
.star-model-container {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

/* ──── QUIZ ──── */
.quiz-container {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.quiz-question {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--c-bg);
  border: 2px solid var(--c-glass-brd);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.92rem;
  color: var(--c-text);
}

.quiz-option:hover {
  border-color: var(--c-primary);
  background: rgba(57, 208, 184, 0.06);
  transform: translateX(4px);
  box-shadow: -3px 0 0 var(--c-primary);
}

.quiz-option.correct {
  border-color: var(--c-success);
  background: rgba(34, 197, 94, 0.1);
  transform: none;
  box-shadow: -3px 0 0 var(--c-success);
}

.quiz-option.wrong {
  border-color: var(--c-danger);
  background: rgba(239, 68, 68, 0.08);
  transform: none;
  box-shadow: -3px 0 0 var(--c-danger);
}

.quiz-option.disabled {
  pointer-events: none;
}

.option-letter {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--c-surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.quiz-feedback {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  font-size: 0.9rem;
  font-weight: 600;
  display: none;
}

.quiz-feedback.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.quiz-feedback.correct {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--c-success);
}

.quiz-feedback.wrong {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--c-danger);
}

.quiz-nav {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.quiz-counter {
  font-size: 0.82rem;
  color: var(--c-text-2);
  margin-left: auto;
}

.quiz-score {
  text-align: center;
  padding: 32px;
}

.quiz-score-number {
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.quiz-score-label {
  color: var(--c-text-2);
  font-size: 0.95rem;
  margin-top: 8px;
}

/* ──── ETL SIMULATOR ──── */
.etl-simulator {
  padding: 8px 0;
}

.etl-sim-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: start;
}

@media(max-width:700px) {
  .etl-sim-grid {
    grid-template-columns: 1fr;
  }
}

.etl-table-wrapper {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.etl-table-title {
  padding: 10px 14px;
  background: var(--c-surface2);
  border-bottom: 1px solid var(--c-border);
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.etl-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.etl-data-table th {
  background: var(--c-surface);
  padding: 8px 12px;
  text-align: left;
  color: var(--c-text-2);
  font-weight: 600;
  border-bottom: 1px solid var(--c-border);
  white-space: nowrap;
}

.etl-data-table td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text);
}

.etl-data-table tr:last-child td {
  border-bottom: none;
}

.cell-dirty {
  color: var(--c-danger);
}

.cell-clean {
  color: var(--c-success);
}

.transform-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.transform-btn {
  background: var(--gradient-1);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-align: center;
}

.transform-btn:hover {
  transform: scale(1.05);
}

.transform-log {
  margin-top: 20px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 14px;
}

.transform-log-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-text-2);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.log-item {
  font-size: 0.8rem;
  padding: 4px 0;
  color: var(--c-text-2);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  gap: 8px;
}

.log-item:last-child {
  border-bottom: none;
}

.log-icon {
  flex-shrink: 0;
}

/* ──── DASHBOARD BUILDER ──── */
.dashboard-builder {
  padding: 8px 0;
}

.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.dash-widget {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.dash-widget-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--c-text-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 120px;
  padding-bottom: 4px;
}

.bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.bar-fill {
  width: 100%;
  border-radius: 6px 6px 0 0;
  transition: height 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  min-width: 24px;
}

.bar-label {
  font-size: 0.68rem;
  color: var(--c-text-2);
  text-align: center;
}

.donut-wrapper {
  display: flex;
  align-items: center;
  gap: 20px;
}

.donut-chart {
  position: relative;
  width: 100px;
  height: 100px;
  flex-shrink: 0;
}

.donut-svg {
  transform: rotate(-90deg);
}

.donut-legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--c-text-2);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ──── STAR MODEL VISUAL ──── */
.star-canvas {
  display: grid;
  grid-template-areas: ". dim-fecha ." "dim-prod hechos dim-region" ". dim-cliente .";
  gap: 16px;
  place-items: center;
  padding: 20px;
}

.star-table {
  background: var(--c-surface);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  min-width: 130px;
  text-align: center;
  border: 2px solid;
}

.star-table--fact {
  border-color: var(--c-warn);
  background: rgba(245, 158, 11, 0.08);
  grid-area: hechos;
  transform: scale(1.08);
}

.star-table--dim {
  border-color: var(--c-secondary);
}

.star-table-name {
  font-size: 0.85rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.star-table-fields {
  font-size: 0.75rem;
  color: var(--c-text-2);
  text-align: left;
}

.star-table-fields li {
  padding: 2px 0;
  border-top: 1px solid var(--c-border);
}

.star-table-fields li:first-child {
  border-top: none;
}

.star-connector {
  position: absolute;
  background: var(--c-border);
}

/* ──── CERT SECTION ──── */
.cert-section {
  background: var(--c-surface);
}

.cert-card {
  background: var(--c-glass-bg);
  border: 1px solid var(--c-glass-brd);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  text-align: center;
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(57, 208, 184, 0.08);
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  animation: fadeInDown 0.6s ease both;
}

.cert-card::before {
  content: '';
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(57, 208, 184, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cert-logo {
  font-size: 4.5rem;
  margin-bottom: 20px;
  animation: splashPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both;
  display: inline-block;
}

.cert-title {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 8px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cert-subtitle {
  color: var(--c-text-2);
  margin-bottom: 36px;
  font-size: 1rem;
}

.cert-skills {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
  text-align: left;
}

.cert-skill {
  background: var(--c-surface2);
  border: 1px solid var(--c-glass-brd);
  border-radius: var(--radius-md);
  padding: 13px 20px;
  font-size: 0.92rem;
  font-weight: 600;
  transition: border-color 0.3s ease;
}

.cert-skill:hover {
  border-color: var(--c-primary);
}

.cert-progress-display {
  font-size: 1rem;
  color: var(--c-text-2);
  margin-top: 8px;
}

.cert-pct {
  font-size: 1.6rem;
  font-weight: 900;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cert-note {
  margin-top: 28px;
  font-size: 0.8rem;
  color: var(--c-text-3);
  border-top: 1px solid var(--c-border);
  padding-top: 16px;
}

/* ──── TOAST ──── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 0.88rem;
  box-shadow: var(--shadow-md);
  animation: toastIn 0.3s ease;
  max-width: 300px;
  display: flex;
  gap: 10px;
  align-items: center;
}

.toast.success {
  border-left: 4px solid var(--c-success);
}

.toast.error {
  border-left: 4px solid var(--c-danger);
}

.toast.info {
  border-left: 4px solid var(--c-secondary);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(20px)
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ──── STAR MODEL INTERACTIVE ──── */
.star-model-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 28px;
  margin-top: 24px;
}

@media (max-width: 1000px) {
  .star-model-layout {
    grid-template-columns: 1fr;
  }
}

.star-canvas {
  background: rgba(15, 23, 42, 0.3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  display: grid;
  grid-template-areas:
    "dim-fecha . dim-prod"
    ". st-fact ."
    "dim-region . dim-cliente";
  grid-template-columns: 1fr 80px 1fr;
  gap: 32px;
  padding: 40px;
  position: relative;
  min-height: 520px;
  align-items: center;
  justify-items: center;
  overflow: hidden;
}

.star-table {
  background: var(--c-surface2);
  border: 2px solid var(--c-border);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 190px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  cursor: pointer;
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.star-table:hover {
  transform: translateY(-5px) scale(1.03);
  border-color: var(--c-text-3);
  box-shadow: var(--shadow-md);
}

.star-table.active {
  border-color: var(--c-primary);
  background: rgba(57, 208, 184, 0.05);
  box-shadow: 0 0 25px rgba(57, 208, 184, 0.25);
  transform: translateY(-5px) scale(1.03);
}

.star-table--fact {
  grid-area: st-fact;
  border-color: var(--c-warn);
  max-width: 210px;
  z-index: 3;
}

.star-table--fact.active {
  border-color: var(--c-warn);
  box-shadow: 0 0 25px rgba(245, 158, 11, 0.3);
}

.star-table-name {
  padding: 10px 14px;
  font-weight: 800;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--c-border);
  text-align: center;
  letter-spacing: 0.02em;
}

.star-table--fact .star-table-name {
  background: rgba(245, 158, 11, 0.12);
  color: var(--c-warn);
}

.star-table--dim .star-table-name {
  background: rgba(91, 108, 255, 0.12);
  color: var(--c-secondary);
}

.star-table-fields {
  list-style: none;
  padding: 12px;
  margin: 0;
}

.star-table-fields li {
  font-size: 0.78rem;
  color: var(--c-text-2);
  padding: 5px 8px;
  border-radius: 6px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.fk-field {
  color: var(--c-secondary) !important;
  font-weight: 600;
  opacity: 0.9;
}

.fk-field.highlight {
  background: rgba(91, 108, 255, 0.25);
  color: white !important;
  transform: translateX(6px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  opacity: 1;
}

/* Sidebar & Info Card */
.star-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.star-info-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  height: 100%;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.star-info-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-1);
  opacity: 0.5;
}

.star-info-card h4 {
  color: var(--c-primary);
  margin-bottom: 14px;
  font-size: 1.15rem;
  font-weight: 800;
}

.star-info-card p {
  font-size: 0.92rem;
  color: var(--c-text-1);
  line-height: 1.7;
  margin-bottom: 20px;
}

.info-footer {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--c-border);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--c-text-3);
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-footer::before {
  content: '💡';
}

.info-placeholder {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--c-text-3);
  gap: 16px;
}

.info-pulse {
  font-size: 2.5rem;
  filter: drop-shadow(0 0 10px var(--c-primary));
  animation: infoPulse 2s infinite;
}

@keyframes infoPulse {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }

  50% {
    transform: scale(1.1);
    opacity: 1;
  }

  100% {
    transform: scale(1);
    opacity: 0.6;
  }
}

.reveal {
  animation: revealSpring 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes revealSpring {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    filter: blur(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

.star-legend {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  background: var(--c-glass-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--c-text-2);
  font-weight: 600;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  box-shadow: 0 0 10px currentColor;
}

.dot.fact {
  background: var(--c-warn);
  color: rgba(245, 158, 11, 0.4);
}

.dot.dim {
  background: var(--c-secondary);
  color: rgba(91, 108, 255, 0.4);
}

@media (max-width: 768px) {
  .star-canvas {
    grid-template-areas:
      "dim-fecha dim-prod"
      "st-fact st-fact"
      "dim-region dim-cliente";
    grid-template-columns: 1fr 1fr;
    padding: 24px;
    gap: 24px;
    min-height: 0;
  }

  .star-model-layout {
    grid-template-columns: 1fr;
  }
}

/* ──── FOOTER ──── */
.footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding: 36px 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  align-items: center;
  justify-content: space-between;
}

.footer-brand p {
  color: var(--c-text-2);
  font-size: 0.82rem;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.footer-links span {
  color: var(--c-text-3);
  font-size: 0.82rem;
}

.footer-links a {
  color: var(--c-text-2);
  font-size: 0.85rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--c-primary);
}

.footer-copy {
  color: var(--c-text-3);
  font-size: 0.78rem;
}

/* ──── RESPONSIVE ──── */
@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .pipeline-track {
    flex-direction: column;
  }

  .pipeline-arrow {
    transform: rotate(90deg);
  }

  .data-flow {
    flex-direction: column;
  }

  .flow-pipe {
    width: 6px;
    height: 60px;
  }

  .flow-particle {
    width: 100%;
    height: 30px;
    animation-name: flowMoveV;
    left: 0;
  }

  @keyframes flowMoveV {
    from {
      top: -10%
    }

    to {
      top: 110%
    }
  }

  .hero-stats {
    gap: 0;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 70px 0 50px;
  }

  .module-body {
    padding: 24px 0;
  }

  .tab {
    padding: 8px 14px;
    font-size: 0.82rem;
  }

  .cert-card {
    padding: 28px 20px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .etl-sim-grid {
    grid-template-columns: 1fr;
  }

  .compare-view {
    grid-template-columns: 1fr;
  }
}

/* ──── GUÍA PRÁCTICA INTERACTIVA (Módulo 1) ──── */
.guide-section {
  margin-bottom: 8px;
}

.guide-section-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
  padding: 20px;
  background: var(--c-glass-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.guide-section-icon {
  font-size: 2rem;
  flex-shrink: 0;
  line-height: 1;
}

.guide-section-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--c-text);
  margin-bottom: 4px;
}

.guide-section-sub {
  font-size: 0.85rem;
  color: var(--c-text-2);
  line-height: 1.5;
}

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guide-step {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 16px;
  align-items: start;
  padding: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

@media (max-width: 768px) {
  .guide-step {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .gs-marker {
    width: 32px;
    height: 32px;
  }
}


.guide-step:hover {
  border-color: rgba(57, 208, 184, 0.3);
  box-shadow: 0 4px 20px rgba(57, 208, 184, 0.08);
}

/* Marcador de paso */
.gs-marker {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(57, 208, 184, 0.3);
}

.gs-marker--green {
  background: linear-gradient(135deg, #39d0b8, #22c55e);
  box-shadow: 0 0 12px rgba(34, 197, 94, 0.3);
}

.gs-marker--purple {
  background: var(--gradient-2);
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.3);
}

/* Módulo 2: Consultas SQL — azul índigo */
.gs-marker--sql {
  background: linear-gradient(135deg, #5b6cff, #818cf8);
  box-shadow: 0 0 12px rgba(91, 108, 255, 0.35);
}

/* Módulo 3: Power Query — teal a verde */
.gs-marker--pq {
  background: linear-gradient(135deg, #39d0b8, #22c55e);
  box-shadow: 0 0 12px rgba(57, 208, 184, 0.35);
}

/* Módulo 4: Power BI — ámbar a naranja */
.gs-marker--pbi {
  background: linear-gradient(135deg, #f59e0b, #f97316);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.35);
}



.gs-marker span {
  font-size: 0.9rem;
  font-weight: 800;
  color: #fff;
}

/* Contenido del paso */
.gs-content {
  min-width: 0;
  /* Crucial para evitar desbordamiento por pre/code */
  overflow-wrap: break-word;
}


.gs-content h5 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--c-text);
}


.gs-content p {
  font-size: 0.9rem;
  color: var(--c-text-2);
  line-height: 1.7;
  margin-bottom: 10px;
}

.gs-tip {
  background: rgba(57, 208, 184, 0.06);
  border: 1px solid rgba(57, 208, 184, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--c-text-2);
  margin-top: 10px;
  line-height: 1.6;
}

/* Tabla dentro de paso */
.gs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 0.85rem;
}

.gs-table th {
  background: var(--c-surface2);
  color: var(--c-text-2);
  padding: 8px 12px;
  text-align: left;
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--c-border);
}

.gs-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text-2);
}

.gs-table tr:last-child td {
  border-bottom: none;
}

.gs-table td code {
  background: rgba(91, 108, 255, 0.12);
  border: 1px solid rgba(91, 108, 255, 0.2);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.8rem;
  color: var(--c-secondary);
  word-break: break-all;
  white-space: pre-wrap;
}

.block-code {
  display: block;
  padding: 12px;
  background: var(--c-bg) !important;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  margin-top: 8px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--c-primary) !important;
}

/* ──── CRUD VISUAL STYLES ──── */
.crud-visual-container {
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
}

.crud-main-img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}

.crud-visual-container:hover .crud-main-img {
  transform: scale(1.02);
}

.crud-legend-overlay {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  z-index: 2;
}

.badge {
  padding: 4px 12px;
  border-radius: 99px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: white;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.badge--create {
  background: rgba(16, 185, 129, 0.4);
}

.badge--read {
  background: rgba(59, 130, 246, 0.4);
}

.badge--update {
  background: rgba(168, 85, 247, 0.4);
}

.badge--delete {
  background: rgba(239, 68, 68, 0.4);
}


/* Propiedades */
.gs-props {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 10px 0;
}

.gs-prop {
  background: var(--c-surface2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--c-text-2);
  border-left: 3px solid var(--c-border);
  line-height: 1.6;
}

.gs-prop--required {
  border-left-color: var(--c-success);
  background: rgba(34, 197, 94, 0.06);
}

/* Checkbox de completado */
.gs-check {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-text-3);
  cursor: pointer;
  white-space: nowrap;
  align-self: flex-start;
  padding-top: 4px;
  transition: color var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.gs-check:hover {
  color: var(--c-primary);
}

.guide-chk:checked+.gs-check,
.guide-chk:checked~span {
  color: var(--c-success);
}

/* Efecto de paso completado */
.guide-step:has(.guide-chk:checked) {
  border-color: rgba(34, 197, 94, 0.35);
  background: rgba(34, 197, 94, 0.04);
}

/* kbd styling */
kbd {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 0.82em;
  color: var(--c-text);
  box-shadow: 0 1px 0 var(--c-border);
}

@media (max-width: 640px) {
  .guide-step {
    grid-template-columns: 1fr;
  }

  .gs-marker {
    display: none;
  }
}

/* ──── EVIDENCE SYSTEM ──── */
.evidence-card {
  margin-top: 32px;
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.evidence-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 0 24px rgba(57, 208, 184, 0.1);
  border-color: rgba(57, 208, 184, 0.3);
}

.evidence-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-1);
}

.evidence-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.evidence-icon {
  font-size: 1.5rem;
  background: rgba(57, 208, 184, 0.1);
  padding: 8px;
  border-radius: var(--radius-sm);
}

.evidence-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--c-text);
  margin: 0;
}

.evidence-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.evidence-item {
  background: var(--c-glass-bg);
  border: 1px solid var(--c-glass-brd);
  padding: 16px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: all var(--transition);
}

.evidence-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--c-glass-brd-hover);
}

.evi-check-icon {
  color: var(--c-success);
  font-weight: bold;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.evi-content h6 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--c-text);
}

.evi-content p {
  font-size: 0.85rem;
  color: var(--c-text-2);
  line-height: 1.4;
}

.evi-format {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px;
  background: rgba(91, 108, 255, 0.15);
  color: var(--c-secondary);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

/* ──── DELIVERABLES ENHANCEMENTS ──── */
.deliverable-section {
  margin-top: 40px;
  padding: 32px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.deliverable-section::after {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 150px;
  height: 150px;
  background: var(--gradient-1);
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
}

.deliverable-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.deliverable-icon {
  font-size: 2.2rem;
  filter: drop-shadow(0 0 10px var(--c-primary-half));
}

.deliverable-info h4 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.deliverable-info p {
  margin: 4px 0 0 0;
  font-size: 0.9rem;
  color: var(--c-text-2);
}

.quality-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  color: #f59e0b;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.deliverable-grid {
  display: grid;
  gap: 12px;
}

.deliverable-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px;
  border-radius: 14px;
  --transition-premium: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── CLASES DE UTILIDAD (MIGRACIÓN INLINE) ─── */
.grid-cols-1 {
  display: grid;
  grid-template-columns: 1fr;
}

.grid-cols-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.grid-cols-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.col-span-2 {
  grid-column: span 2;
}

.kpi-primary {
  --kpi-color: #39d0b8;
}

.kpi-secondary {
  --kpi-color: #5b6cff;
}

.kpi-accent {
  --kpi-color: #a855f7;
}

.kpi-warn {
  --kpi-color: #f59e0b;
}

.gap-8 {
  gap: 8px;
}

.gap-10 {
  gap: 10px;
}

.gap-12 {
  gap: 12px;
}

.gap-15 {
  gap: 15px;
}

.gap-16 {
  gap: 16px;
}

.delay-04 {
  animation-delay: 0.4s !important;
}

.delay-08 {
  animation-delay: 0.8s !important;
}

.delay-12 {
  animation-delay: 1.2s !important;
}

.items-start {
  align-items: flex-start !important;
}

.items-center {
  align-items: center !important;
}

.border-l-blue {
  border-left: 4px solid #3b82f6 !important;
}

.border-l-orange {
  border-left: 4px solid #f59e0b !important;
}

.border-l-green {
  border-left: 4px solid #10b981 !important;
}

.border-l-primary {
  border-left: 4px solid var(--c-primary) !important;
}

.bg-blue-light {
  background: rgba(59, 130, 246, 0.08) !important;
}

.bg-blue-medium {
  border: 1px solid rgba(59, 130, 246, 0.3) !important;
}

.bg-primary-light {
  background: rgba(57, 208, 184, 0.08) !important;
}

.bg-primary-medium {
  border: 1px solid rgba(57, 208, 184, 0.3) !important;
}

.bg-purple-light {
  background: rgba(168, 85, 247, 0.08) !important;
}

.bg-purple-medium {
  border: 1px solid rgba(168, 85, 247, 0.3) !important;
}

.bg-purple-dark {
  background: rgba(168, 85, 247, 0.15) !important;
}

.bg-purple-darker {
  border: 1px solid rgba(168, 85, 247, 0.4) !important;
}

.text-primary {
  color: var(--c-primary) !important;
}

.text-purple {
  color: #a855f7 !important;
}

.text-warn {
  color: var(--c-warn) !important;
}

.text-09 {
  font-size: 0.9rem !important;
}

.text-085 {
  font-size: 0.85rem !important;
}

.text-092 {
  font-size: 0.92rem !important;
}

.text-095 {
  font-size: 0.95rem !important;
}

.text-10 {
  font-size: 1rem !important;
}

.text-11 {
  font-size: 1.1rem !important;
}

.leading-19 {
  line-height: 1.9 !important;
}

.pl-20 {
  padding-left: 20px !important;
}

.p-10 {
  padding: 10px !important;
}

.p-14 {
  padding: 14px !important;
}

.p-16 {
  padding: 16px !important;
}

.p-18 {
  padding: 18px !important;
}

.pt-24 {
  padding-top: 24px !important;
}

.m-0 {
  margin: 0 !important;
}

.mb-4 {
  margin-bottom: 4px !important;
}

.m-10-0 {
  margin: 10px 0 !important;
}

.mt-6-0-0-0 {
  margin: 6px 0 0 0 !important;
}

.mt-4-0-0-0 {
  margin: 4px 0 0 0 !important;
}

.bg-gray-800-50 {
  background: rgba(30, 41, 59, 0.5) !important;
}

.bg-white-08 {
  background: rgba(255, 255, 255, 0.08) !important;
}

.bg-white-10 {
  background: rgba(255, 255, 255, 0.1) !important;
}

.border-white-08 {
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.border-t-white-10 {
  border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.accent-blue {
  accent-color: #4285F4 !important;
}

.rounded-8 {
  border-radius: 8px !important;
}

.rounded-12 {
  border-radius: 12px !important;
}

.transition-width {
  transition: width 0.4s ease !important;
}

.transition-bg {
  transition: background 0.2s !important;
}

.bg-gradient-to-r-secondary-purple {
  background: linear-gradient(90deg, #5b6cff, #a855f7) !important;
}

.bg-gradient-to-r-primary-secondary {
  background: linear-gradient(90deg, #39d0b8, #5b6cff) !important;
}

.bg-gradient-to-r-warn-purple {
  background: linear-gradient(90deg, #f59e0b, #a855f7) !important;
}

.bg-gradient-to-r-warn-blue {
  background: linear-gradient(90deg, #f59e0b, #4285F4) !important;
}

.bg-gradient-to-r-blue-green {
  background: linear-gradient(90deg, #4285F4, #34a853) !important;
}

.mt-10 {
  margin-top: 10px !important;
}

.mt-15 {
  margin-top: 15px !important;
}

.mt-20 {
  margin-top: 20px !important;
}

.mt-24 {
  margin-top: 24px !important;
}

.mt-28 {
  margin-top: 28px !important;
}

.mt-32 {
  margin-top: 32px !important;
}

.mb-8 {
  margin-bottom: 8px !important;
}

.mb-10 {
  margin-bottom: 10px !important;
}

.mb-16 {
  margin-bottom: 16px !important;
}

.mb-24 {
  margin-bottom: 24px !important;
}

.mb-28 {
  margin-bottom: 28px !important;
}

.pt-28 {
  padding-top: 28px !important;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

.w-full {
  width: 100% !important;
}

.w-0-pct {
  width: 0% !important;
}

.h-8 {
  height: 8px !important;
}

.h-100-pct {
  height: 100% !important;
}

.border-t-purple {
  border-top: 2px solid rgba(168, 85, 247, 0.3) !important;
}

.border-t-pq {
  border-top: 2px solid rgba(57, 208, 184, 0.4) !important;
}

.border-t-warn {
  border-top: 2px solid rgba(245, 158, 11, 0.4) !important;
}

.border-l-warn {
  border-left: 4px solid var(--c-warn) !important;
}

.border-l-secondary {
  border-left: 4px solid var(--c-secondary) !important;
}

.border-l-google {
  border-left: 4px solid #4285F4 !important;
}

.bg-dark-soft {
  background: rgba(30, 41, 59, 0.5) !important;
}

.bg-white-05 {
  background: rgba(255, 255, 255, 0.05) !important;
}

.bg-white-04 {
  background: rgba(255, 255, 255, 0.04) !important;
}

.font-700 {
  font-weight: 700 !important;
}

.font-800 {
  font-weight: 800 !important;
}

.text-xs {
  font-size: 0.85rem !important;
}

.text-sm {
  font-size: 0.9rem !important;
}

.text-md {
  font-size: 0.95rem !important;
}

.text-xl {
  font-size: 1.1rem !important;
}

.opacity-75 {
  opacity: 0.75 !important;
}

.rounded-6 {
  border-radius: 6px !important;
}

.overflow-hidden {
  overflow: hidden !important;
}

/* Scrollbar Compatibility */
@supports (scrollbar-width: thin) {
  * {
    scrollbar-width: thin;
    scrollbar-color: var(--c-primary) transparent;
  }
}

/* Safari and Chrome < 121 */
*::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  background-color: var(--c-primary);
  border-radius: 20px;
  border: 2px solid transparent;
  background-clip: content-box;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background-color: var(--c-primary);
  border-radius: 20px;
  border: 2px solid transparent;
  background-clip: content-box;
}

/* Utilities */
.hidden {
  display: none !important;
}

.w-0 {
  width: 0% !important;
}

.video-card--master {
  background: linear-gradient(135deg, rgba(57, 208, 184, 0.1), rgba(91, 108, 255, 0.15)) !important;
}

.deliverable-item:hover {
  background: rgba(30, 41, 59, 0.6);
  border-color: var(--c-primary);
  transform: translateX(6px);
}

.deliverable-item input[type="checkbox"] {
  margin-top: 4px;
  width: 20px;
  height: 20px;
  accent-color: var(--c-primary);
  flex-shrink: 0;
}

.deliverable-item i {
  font-style: normal;
  font-weight: 800;
  color: var(--c-text-1);
  font-size: 1rem;
  display: block;
  margin-bottom: 4px;
}

.deliverable-item span {
  font-size: 0.88rem;
  color: var(--c-text-2);
  line-height: 1.5;
}

.deliverable-footer {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  text-align: center;
}

.upload-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  background: var(--gradient-1);
  color: white;
  border-radius: 12px;
  font-weight: 800;
  font-size: 1rem;
  text-decoration: none;
  box-shadow: 0 10px 20px -5px rgba(91, 108, 255, 0.4);
  transition: all 0.3s ease;
}

.upload-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px -5px rgba(91, 108, 255, 0.6);
  filter: brightness(1.1);
}

.upload-cta-icon {
  font-size: 1.25rem;
}

.folder-path {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 4px 10px;
  border-radius: 6px;
  color: #39d0b8;
}

/* Common Utilities for Inline Style Replacement */
.mt-2 {
  margin-top: 0.5rem;
}

.mt-3 {
  margin-top: 0.75rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-3 {
  margin-bottom: 0.75rem;
}

.py-2 {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.px-3 {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}

.fw-bold {
  font-weight: 700;
}

.text-xs {
  font-size: 0.75rem;
}

.text-sm {
  font-size: 0.875rem;
}

.opacity-70 {
  opacity: 0.7;
}

.glass-badge {
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.7rem;
  font-weight: 600;
}

.step-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  transition: all 0.3s ease;
}

.step-card:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}

.w-100 {
  width: 100px !important;
}

/* Table Preview */
.lab-preview-content {
  flex: 1;
  overflow: auto;
  padding: 16px;
  background: rgba(0, 0, 0, 0.15);
}

.lab-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.85rem;
}

.lab-table th {
  background: var(--c-surface2);
  color: var(--c-text-2);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid var(--c-border);
  position: sticky;
  top: 0;
  white-space: nowrap;
}

.lab-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text);
  white-space: nowrap;
}

.lab-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.col-header-type {
  font-size: 0.7rem;
  color: var(--c-primary);
  margin-right: 6px;
  font-family: var(--font-mono);
}

/* Applied Steps */
.lab-steps-list {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  overflow-y: auto;
}

.applied-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: 8px;
  font-size: 0.82rem;
  position: relative;
  animation: slideInRight 0.3s ease;
}

.applied-step::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 50%;
  width: 12px;
  height: 2px;
  background: var(--c-border);
}

.applied-step-icon {
  color: var(--c-primary);
  font-size: 1rem;
}

.applied-step-text {
  flex: 1;
  color: var(--c-text-2);
}

.remove-step {
  color: var(--c-text-3);
  transition: color 0.2s;
}

.remove-step:hover {
  color: var(--c-danger);
}

/* M Code Viewer */
.m-code-panel {
  margin-top: 24px;
  grid-column: span 3;
}

@media (max-width: 1100px) {
  .m-code-panel {
    grid-column: 1;
  }
}

.m-code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 18px;
  background: #0f172a;
  border: 1px solid var(--c-border);
  border-bottom: none;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}

.m-code-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #38bdf8;
  font-weight: 700;
}

.m-code-box {
  background: #0a0f1e;
  border: 1px solid var(--c-border);
  padding: 20px;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: #94a3b8;
  overflow-x: auto;
}

.m-keyword {
  color: #f472b6;
}

.m-func {
  color: #38bdf8;
}

.m-str {
  color: #4ade80;
}

.m-comment {
  color: #64748b;
  font-style: italic;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ──── VIDEOTECA SQL ──── */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.video-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  overflow: hidden;
  text-decoration: none;
  transition: var(--transition-spring);
  border: 1px solid var(--c-glass-brd);
  background: var(--c-glass-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-primary);
}

.video-thumbnail {
  position: relative;
  aspect-ratio: 16/9;
  width: 100%;
  overflow: hidden;
  background: #000;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
  opacity: 0.85;
}

.video-card:hover .video-thumbnail img {
  transform: scale(1.08);
  opacity: 1;
}

.play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.video-card:hover .play-overlay {
  opacity: 1;
}

.video-info {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.5rem;
}

.video-topic {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.video-info h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.3;
}

.video-info p {
  font-size: 0.9rem;
  color: var(--c-text-2);
  line-height: 1.5;
  margin-top: auto;
}

/* ──── SCROLL TO TOP ──── */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--gradient-1);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  z-index: 1000;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  transform: scale(1.1) translateY(-5px);
  box-shadow: 0 8px 25px rgba(57, 208, 184, 0.4);
}

/* ──── ANIMATIONS ──── */
.reveal-step {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-step.active {
  opacity: 1;
  transform: translateY(0);
}

.guide-step.active-step {
  border-color: var(--c-primary);
  box-shadow: 0 0 20px rgba(57, 208, 184, 0.15);
  background: rgba(57, 208, 184, 0.02);
}

/* ──── PREMIUM CHECKBOX ──── */
.gs-check input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--c-border);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
}

.gs-check input[type="checkbox"]:checked {
  background: var(--c-success);
  border-color: var(--c-success);
}

.gs-check input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 11px;
  font-weight: 800;
}