/* ----------------------------------------------------
   IA para Arquitectos 2.0 - Design System (Stitch Architectural AI)
   Structural Minimalism & Architectural Technical Aesthetic
------------------------------------------------------- */

/* 1. THEME VARIABLES & ROOT CONFIGURATION */
:root, html.light {
  --font-title: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Palette - Matte Cream & Deep Charcoal */
  --bg-main: #faf9fe;
  --bg-surface: #ffffff;
  --bg-container: #f4f3f8;
  --bg-container-high: #eeedf3;
  --bg-glass: rgba(250, 249, 254, 0.85);
  
  --text-primary: #1a1b1f;
  --text-secondary: #444748;
  --text-muted: #747878;
  
  --border-color: rgba(116, 120, 120, 0.2);
  --border-strong: #1a1b1f;
  --border-light: rgba(116, 120, 120, 0.12);
  
  --accent-blue: #2480ff;
  --accent-blue-glow: rgba(36, 128, 255, 0.12);
  --accent-orange: #ff512f;
  --accent-green: #10b981;
  
  --btn-primary-bg: #1a1b1f;
  --btn-primary-text: #ffffff;
  --btn-primary-hover: #000000;
  
  --btn-secondary-bg: #ffffff;
  --btn-secondary-text: #1a1b1f;
  --btn-secondary-border: rgba(116, 120, 120, 0.3);
  
  --grid-line: rgba(116, 120, 120, 0.07);
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
  --halo-glow: rgba(36, 128, 255, 0.06);

  --badge-bg: #eeedf3;
  --badge-text: #1a1b1f;
}

html.dark {
  --bg-main: #0b0d10;
  --bg-surface: #12151b;
  --bg-container: #1a1e26;
  --bg-container-high: #222733;
  --bg-glass: rgba(11, 13, 16, 0.90);
  
  --text-primary: #f5f6f8;
  --text-secondary: #9da3b4;
  --text-muted: #6b7282;
  
  --border-color: rgba(242, 15, 56, 0.22);
  --border-strong: #F20F38;
  --border-light: rgba(255, 255, 255, 0.08);
  
  --accent-blue: #F20F38;
  --accent-blue-glow: rgba(242, 15, 56, 0.25);
  --accent-orange: #ff763b;
  --accent-green: #34d399;
  
  --btn-primary-bg: #F20F38;
  --btn-primary-text: #ffffff;
  --btn-primary-hover: #d90a2e;
  
  --btn-secondary-bg: #12151b;
  --btn-secondary-text: #f5f6f8;
  --btn-secondary-border: rgba(242, 15, 56, 0.35);
  
  --grid-line: rgba(242, 15, 56, 0.06);
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.65);
  --halo-glow: rgba(242, 15, 56, 0.15);

  --badge-bg: #1a1e26;
  --badge-text: #F20F38;
}

/* 2. BASE & RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  line-height: 1.6;
}

/* Technical CAD Grid Background */
.technical-grid {
  background-image: 
    linear-gradient(var(--grid-line) 0.5px, transparent 0.5px),
    linear-gradient(90deg, var(--grid-line) 0.5px, transparent 0.5px);
  background-size: 40px 40px;
}

/* Typography Utilities */
h1, h2, h3, h4, .font-title {
  font-family: var(--font-title);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
}

.font-mono, .label-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-blue { color: var(--accent-blue); }
.text-orange { color: var(--accent-orange); }
.text-green { color: var(--accent-green); }

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
  border-bottom: 0.5px solid var(--border-color);
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
}

.section-header {
  max-width: 820px;
  margin: 0 auto 56px auto;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-blue);
  margin-bottom: 12px;
  display: inline-block;
}

.section-title {
  font-size: 2.25rem;
  line-height: 1.25;
  margin-bottom: 16px;
  text-transform: uppercase;
  font-weight: 600;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  font-weight: 400;
}

@media (max-width: 768px) {
  .section-title { font-size: 1.65rem; }
  .section-subtitle { font-size: 1rem; }
}

/* 3. BUTTONS (Sharp 0px Architectural Styling) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 0px; /* Sharp architectural corners */
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-bg);
}

.btn-primary:hover {
  background-color: var(--btn-primary-hover);
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--accent-blue-glow);
}

.btn-secondary {
  background-color: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border-color: var(--btn-secondary-border);
}

.btn-secondary:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--text-primary);
  background-color: var(--bg-container);
}

.btn-block {
  width: 100%;
}

.icon-small {
  width: 16px;
  height: 16px;
}

/* 4. NAVBAR & THEME TOGGLE */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 0.5px solid var(--border-color);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.navbar-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  line-height: 1.1;
}

.logo-two-lines {
  display: flex;
  flex-direction: column;
  font-family: var(--font-title);
  letter-spacing: -0.01em;
}

.logo-line-1 {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.logo-line-2 {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.seats-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent-blue);
  background-color: rgba(242, 15, 56, 0.12);
  padding: 8px 14px;
  border: 1px dashed var(--accent-blue);
  box-shadow: 0 0 12px rgba(242, 15, 56, 0.25);
  letter-spacing: 0.02em;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-blue);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--accent-blue);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-container);
  border: 0.5px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  border-color: var(--text-primary);
}

@media (max-width: 992px) {
  .nav-menu { display: none; }
}

/* 5. HERO SECTION */
.hero-section {
  padding-top: 140px;
  padding-bottom: 80px;
  border-bottom: 0.5px solid var(--border-color);
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.25rem; }
}

.asymmetric-border {
  border-left: 2px solid var(--text-primary);
  padding-left: 20px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 16px;
  padding-top: 24px;
  border-top: 0.5px solid var(--border-color);
}

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

.stat-num {
  font-family: var(--font-title);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.border-left {
  padding-left: 24px;
  border-left: 0.5px solid var(--border-color);
}

/* Hero Visual / Blueprint Mockup Frame */
.hero-visual {
  position: relative;
  width: 100%;
}

.blueprint-frame {
  position: relative;
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  box-shadow: var(--card-shadow);
  padding: 12px;
  overflow: hidden;
}

.blueprint-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 0.5px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
}

.blueprint-img-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--bg-container);
}

.blueprint-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.blueprint-frame:hover .blueprint-img {
  transform: scale(1.02);
}

/* Technical Callout Badge */
.technical-callout {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background-color: var(--bg-glass);
  backdrop-filter: blur(10px);
  padding: 8px 14px;
  border: 0.5px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.callout-line {
  width: 40px;
  height: 1px;
  background-color: var(--accent-blue);
}

/* 6. KEY CONCEPTS HORIZONTAL STRIP */
.concept-strip {
  border-bottom: 0.5px solid var(--border-color);
  background-color: var(--bg-container);
}

.concept-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  text-align: center;
}

@media (max-width: 768px) {
  .concept-grid {
    flex-direction: column;
    gap: 24px;
  }
}

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

.concept-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.concept-title {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-primary);
  transition: letter-spacing 0.3s ease;
}

.concept-item:hover .concept-title {
  letter-spacing: 0.35em;
  color: var(--accent-blue);
}

.strip-divider {
  width: 1px;
  height: 32px;
  background-color: var(--border-color);
}

@media (max-width: 768px) {
  .strip-divider {
    width: 60px;
    height: 1px;
  }
}

/* 7. PROBLEM SECTION (EL RETO DIARIO) */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }
}

.problem-card {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  transition: all 0.25s ease;
}

.problem-card:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.card-num-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.problem-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.problem-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.problem-footer {
  margin-top: 40px;
  padding: 24px;
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  text-align: center;
}

.highlight-text {
  font-size: 0.9375rem;
  color: var(--text-primary);
  line-height: 1.6;
}

/* 8. VALUE PROPOSITION SECTION (PROPUESTA DE VALOR) */
.value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 768px) {
  .value-grid {
    grid-template-columns: 1fr;
  }
}

.value-card {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  border-left: 3px solid var(--accent-blue);
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  transition: all 0.25s ease;
}

.value-card:hover {
  border-color: var(--text-primary);
  border-left-color: var(--accent-blue);
  transform: translateY(-2px);
}

.value-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-muted);
}

.value-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.value-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.value-content p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* 9. INTERACTIVE PLAYGROUND / SIMULATOR */
.playground-wrapper {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.playground-tabs {
  display: flex;
  border-bottom: 0.5px solid var(--border-color);
  background-color: var(--bg-container);
  overflow-x: auto;
}

.play-tab {
  flex: 1;
  padding: 16px 20px;
  background: transparent;
  border: none;
  border-right: 0.5px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.play-tab:hover {
  color: var(--text-primary);
  background-color: var(--bg-container-high);
}

.play-tab.active {
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border-bottom: 2px solid var(--accent-blue);
  font-weight: 600;
}

.playground-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 992px) {
  .playground-body {
    grid-template-columns: 1fr;
  }
}

.playground-input-side, .playground-output-side {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.playground-input-side {
  border-right: 0.5px solid var(--border-color);
}

@media (max-width: 992px) {
  .playground-input-side {
    border-right: none;
    border-bottom: 0.5px solid var(--border-color);
  }
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  padding-bottom: 12px;
  border-bottom: 0.5px solid var(--border-color);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-green);
}

.dot-green {
  width: 6px;
  height: 6px;
  background-color: var(--accent-green);
  border-radius: 50%;
  display: inline-block;
}

.prompt-box {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 220px;
  white-space: pre-wrap;
}

.output-content {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 220px;
  max-height: 320px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* 10. SYLLABUS / PROGRAM SECTION */
.syllabus-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.accordion-item {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  transition: all 0.25s ease;
}

.accordion-header {
  width: 100%;
  padding: 24px;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  text-align: left;
  cursor: pointer;
  color: var(--text-primary);
}

.session-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 12px;
  background-color: var(--badge-bg);
  color: var(--accent-blue);
  border: 0.5px solid var(--border-color);
  white-space: nowrap;
}

.header-main {
  flex: 1;
}

.header-main h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.header-main p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.accordion-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.content-body {
  padding: 0 24px 24px 24px;
  border-top: 0.5px solid var(--border-color);
  margin-top: 12px;
  padding-top: 20px;
}

.syllabus-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.syllabus-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.syllabus-list i {
  color: var(--accent-blue);
  flex-shrink: 0;
  margin-top: 3px;
}

.deliverable-box {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.deliverable-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-blue);
  text-transform: uppercase;
}

/* 11. PROFILES SECTION */
.profile-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 992px) {
  .profile-grid {
    grid-template-columns: 1fr;
  }
}

.profile-card {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  transition: all 0.25s ease;
}

.profile-card:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.profile-icon {
  width: 44px;
  height: 44px;
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.profile-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.profile-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.profile-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent-blue);
  text-transform: uppercase;
  margin-top: auto;
}

/* 12. INSTRUCTOR SECTION */
.instructor-card {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  padding: 48px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 768px) {
  .instructor-card {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 24px;
  }
}

.instructor-avatar-frame {
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.instructor-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.instructor-initials {
  font-family: var(--font-title);
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-muted);
}

.instructor-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.badge-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-blue);
  text-transform: uppercase;
}

.instructor-bio {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.instructor-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 20px;
  border-top: 0.5px solid var(--border-color);
}

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

.stat-big {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-small {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* 13. FAQ SECTION */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-family: var(--font-title);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  padding: 0 24px 20px 24px;
}

.faq-answer p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 14. BOOKING / RESERVATION SECTION */
.booking-card {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  box-shadow: var(--card-shadow);
  padding: 48px;
  position: relative;
}

@media (max-width: 768px) {
  .booking-card { padding: 24px; }
}

.booking-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

@media (max-width: 992px) {
  .booking-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.booking-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.badge-accent {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-orange);
  text-transform: uppercase;
}

.booking-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
}

.included-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.included-list h3 {
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.included-list ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.included-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.booking-form-pane {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 0.5px solid var(--border-color);
  padding-bottom: 16px;
}

.seats-counter {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.counter-badge {
  font-weight: 700;
  color: var(--accent-blue);
  font-size: 1rem;
}

.urgency-timer {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

#countdown-timer {
  font-weight: 700;
  color: var(--accent-orange);
}

.booking-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

.form-group input, .form-group select {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  outline: none;
  border-radius: 0px;
  transition: border-color 0.2s ease;
}

.form-group input:focus, .form-group select:focus {
  border-color: var(--text-primary);
}

.form-security {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
}

.hidden {
  display: none !important;
}

.form-success-message {
  padding: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.success-icon {
  font-size: 2.5rem;
}

/* 15. FOOTER */
.footer {
  background-color: var(--bg-surface);
  border-top: 0.5px solid var(--border-color);
  padding: 48px 0;
  text-align: center;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}

.footer-logo {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-copyright {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-decoration: none;
  text-transform: uppercase;
}

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

/* Scroll reveal utility */
.scroll-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================
   WORKSHOP SUMMARY & TRANSFER PAYMENT CARDS
   ========================================== */
.workshop-summary-box {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sum-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9375rem;
}

.sum-item strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.price-item {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--accent-blue);
  padding: 12px 16px;
  margin-top: 4px;
}

.price-highlight {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--accent-blue);
}

/* Payment Methods Box */
.payment-methods-box {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.payment-box-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-transform: uppercase;
  color: var(--text-primary);
}

.payment-box-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.payment-options-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.payment-option-card {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s ease;
}

.payment-option-card:hover {
  border-color: var(--accent-blue);
}

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

.pay-logo-img {
  height: 28px;
  width: auto;
  max-width: 130px;
  object-fit: contain;
}

.pay-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  padding: 2px 8px;
  border: 0.5px solid var(--border-color);
  text-transform: uppercase;
}

.pay-data-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.pay-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.copy-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-main);
  border: 0.5px solid var(--border-color);
  padding: 6px 12px;
}

.pay-value {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-primary);
  word-break: break-all;
}

.pay-clabe {
  font-size: 0.875rem;
  letter-spacing: 0.5px;
  font-weight: 600;
  color: var(--accent-blue);
}

.btn-copy {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 4px;
  display: flex;
  align-items: center;
  transition: color 0.2s ease;
}

.btn-copy:hover {
  color: var(--accent-blue);
}

/* File Upload Dropzone */
.file-upload-dropzone {
  background-color: var(--bg-surface);
  border: 1px dashed var(--border-color);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.file-upload-dropzone:hover {
  border-color: var(--accent-blue);
  background-color: var(--bg-container);
}

.file-input-hidden {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.dropzone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  pointer-events: none;
}

.dropzone-icon {
  width: 32px;
  height: 32px;
}

.dropzone-text {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-primary);
  font-weight: 600;
}

.dropzone-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.receipt-preview-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-main);
  padding: 10px 14px;
  border: 0.5px solid var(--accent-blue);
}

.file-info-col {
  display: flex;
  align-items: center;
  gap: 8px;
}

.filename-text {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-primary);
  max-width: 180px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-remove-file {
  background: transparent;
  border: none;
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  text-transform: uppercase;
}

.ticket-badge-box {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--accent-blue);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 12px 0;
}

.ticket-code {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent-blue);
  letter-spacing: 1px;
}

/* ==========================================
   MODALS SYSTEM (ADMIN & STUDENT PORTAL)
   ========================================== */
.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  background-color: rgba(11, 13, 16, 0.88);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 20px 10px;
}

.modal-box {
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.8);
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: margin-top 0.1s ease-out;
  margin-top: 40px;
}

.modal-md { max-width: 580px; }
.modal-lg { max-width: 1080px; }

.modal-header {
  padding: 16px 24px;
  background-color: var(--bg-container);
  border-bottom: 0.5px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-title-wrap h3 {
  font-family: var(--font-title);
  font-size: 1.125rem;
  font-weight: 700;
  text-transform: uppercase;
}

.btn-close-modal {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.btn-close-modal:hover {
  color: var(--accent-blue);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

/* Admin Auth Lock Box */
.admin-auth-pane {
  display: flex;
  justify-content: center;
  padding: 40px 20px;
}

.auth-box {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  padding: 32px;
  max-width: 420px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-icon { font-size: 2.5rem; }

.auth-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
}

/* Admin Dashboard Layout */
.admin-metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.admin-metric-card {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.admin-metric-card.warning { border-color: var(--accent-orange); }
.admin-metric-card.success { border-color: var(--accent-green); }

.m-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.m-val {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
}

.admin-metric-card.warning .m-val { color: var(--accent-orange); }
.admin-metric-card.success .m-val { color: var(--accent-green); }

.admin-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 0.5px solid var(--border-color);
  margin-bottom: 20px;
}

.admin-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
}

.admin-tab.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
  font-weight: 600;
}

.admin-tab-content { display: none; }
.admin-tab-content.active { display: block; }

/* Admin Table Toolbar & Table */
.table-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.search-wrap input, .filter-wrap select {
  padding: 8px 12px;
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  outline: none;
}

.table-responsive {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

.admin-table th {
  background-color: var(--bg-container);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  border-bottom: 0.5px solid var(--border-color);
}

.admin-table td {
  padding: 12px;
  border-bottom: 0.5px solid var(--border-light);
  color: var(--text-secondary);
  vertical-align: middle;
}

.admin-table tr:hover td {
  background-color: var(--bg-container);
}

.badge-status {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  border: 0.5px solid currentColor;
}

.badge-status.pendiente { color: var(--accent-orange); }
.badge-status.aprobado { color: var(--accent-green); }
.badge-status.inactivo { color: #9ca3af; }
.badge-status.rechazado { color: #f43f5e; }

.action-btn-group {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.btn-act {
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  color: var(--text-primary);
  padding: 4px 8px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-act:hover { background-color: var(--bg-surface); }
.btn-act.approve:hover { background-color: var(--accent-green); color: #000; }
.btn-act.inactive:hover { background-color: #6b7280; color: #fff; }
.btn-act.reject:hover { background-color: #f43f5e; color: #fff; }
.btn-act.delete:hover { background-color: #dc2626; color: #fff; border-color: #dc2626; }
.btn-act.wa { color: #25D366; }

/* Course Config & Manual Reg Forms */
.config-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 680px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 600px) {
  .form-grid-2 { grid-template-columns: 1fr; }
}

.config-form textarea {
  width: 100%;
  padding: 12px;
  background-color: var(--bg-container);
  border: 0.5px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  outline: none;
}

/* Student Portal Result Card */
.student-access-card {
  background-color: var(--bg-container);
  border: 0.5px solid var(--accent-blue);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.student-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 0.5px solid var(--border-color);
  padding-bottom: 12px;
}

.student-card-header h4 {
  font-family: var(--font-title);
  font-size: 1.125rem;
}

.access-links-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.access-link-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-surface);
  border: 0.5px solid var(--border-color);
  padding: 12px 16px;
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.access-link-btn:hover {
  border-color: var(--accent-blue);
  background-color: var(--bg-main);
}