/* ==========================================================================
   LEARVION CODE SCHOOL - Modern Design System & Stylesheet
   "Learn Python. Build Projects. Start Your Coding Journey."
   ========================================================================== */

:root {
  /* Brand Palette */
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --primary-glow: rgba(2, 132, 199, 0.15);
  --accent-blue: #2563eb;
  --accent-cyan: #38bdf8;
  --accent-gold: #f59e0b;
  --accent-gold-light: #fef3c7;
  
  /* Neutrals & Dark Theme Accents */
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-subtle: #f1f5f9;
  --border: #e2e8f0;
  --border-focus: #38bdf8;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  --text-inverse: #ffffff;
  
  --hero-dark-bg: #0b1329;
  --code-bg: #0f172a;
  --code-border: #1e293b;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, 'Courier New', monospace;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-card-hover: 0 20px 30px -10px rgba(2, 132, 199, 0.15);

  /* Layout */
  --header-height: 76px;
  --container-max: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-fast: 0.18s ease;
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Base Accessibility Focus */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 96px 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-surface);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.75rem);
  margin-bottom: 16px;
  color: var(--text-main);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* ==========================================================================
   BUTTONS & CTAs
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1 0%, #1d4ed8 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

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

.btn-lg {
  padding: 16px 32px;
  font-size: 1.075rem;
  border-radius: var(--radius-md);
}

.btn-full {
  width: 100%;
}

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: all var(--transition-fast);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
  height: 68px;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  height: 46px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.site-header.scrolled .brand-logo-img {
  height: 40px;
}

.brand-link:hover .brand-logo-img {
  transform: scale(1.02);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile Hamburger Toggle */
.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 70px 0 90px 0;
  background: radial-gradient(circle at 80% 20%, rgba(2, 132, 199, 0.08) 0%, transparent 60%),
              radial-gradient(circle at 10% 80%, rgba(37, 99, 235, 0.06) 0%, transparent 50%),
              var(--bg-body);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #ffffff;
  border: 1px solid rgba(2, 132, 199, 0.25);
  box-shadow: var(--shadow-sm);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.hero-title {
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
}

.text-gradient {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 50%, #1e40af 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.18rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.highlight-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}

.highlight-item svg {
  color: var(--primary);
}

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

.hero-price-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 14px;
}

/* Hero Code / Terminal Visual Window */
.hero-visual {
  position: relative;
}

.code-window {
  background: var(--code-bg);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 48px -12px rgba(15, 23, 42, 0.35),
              0 0 0 1px rgba(255, 255, 255, 0.1);
  overflow: hidden;
  font-family: var(--font-mono);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: #1e293b;
  border-bottom: 1px solid #334155;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.window-filename {
  font-size: 0.8rem;
  color: #94a3b8;
  font-family: var(--font-sans);
  font-weight: 500;
}

.window-badge {
  font-size: 0.72rem;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.code-body {
  padding: 20px 22px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: #cbd5e1;
  overflow-x: auto;
}

.code-body pre {
  margin: 0;
}

/* Syntax Highlighting Colors */
.syn-kw { color: #f472b6; }     /* import, from, def */
.syn-lib { color: #38bdf8; }    /* pandas, numpy */
.syn-var { color: #e2e8f0; }    /* df, cleaned_data */
.syn-fn { color: #60a5fa; }     /* read_csv, describe */
.syn-str { color: #34d399; }    /* "students.csv" */
.syn-comment { color: #64748b; font-style: italic; }
.syn-num { color: #fbbf24; }

.code-terminal-output {
  margin-top: 14px;
  padding: 14px;
  background: rgba(15, 23, 42, 0.75);
  border-radius: var(--radius-sm);
  border-left: 3px solid #10b981;
  font-size: 0.8rem;
  color: #94a3b8;
}

.output-title {
  color: #10b981;
  font-weight: 600;
  margin-bottom: 4px;
}

/* Floating Mini Widget */
.floating-stat-card {
  position: absolute;
  bottom: -20px;
  right: -15px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xl);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  animation: floatCard 4s ease-in-out infinite;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.stat-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-info .stat-val {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-main);
}

.stat-info .stat-lbl {
  font-size: 0.775rem;
  color: var(--text-muted);
}

/* ==========================================================================
   COURSE OVERVIEW SECTION
   ========================================================================== */
.overview-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: center;
}

.overview-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}

.overview-cta-group {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.guarantee-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.spec-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.spec-box:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
}

.spec-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.spec-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
}

.spec-value.fee-highlight {
  color: var(--primary);
}

/* ==========================================================================
   WHAT YOU'LL LEARN SECTION
   ========================================================================== */
.learn-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.learn-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.learn-card:hover {
  transform: translateY(-5px);
  border-color: rgba(2, 132, 199, 0.4);
  box-shadow: var(--shadow-card-hover);
}

.card-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
}

.card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}

.card-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.card-list li svg {
  color: #10b981;
  flex-shrink: 0;
}

/* ==========================================================================
   8-WEEK ROADMAP / TIMELINE
   ========================================================================== */
.timeline-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

/* Center timeline stem */
.timeline-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--accent-cyan) 50%, var(--accent-gold) 100%);
  transform: translateX(-50%);
  border-radius: 3px;
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  width: 100%;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item:nth-child(odd) {
  justify-content: flex-start;
}

.timeline-item:nth-child(even) {
  justify-content: flex-end;
}

.timeline-card {
  width: calc(50% - 40px);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
}

.timeline-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.timeline-marker {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 3px solid var(--primary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.15);
}

.timeline-week-tag {
  font-size: 0.775rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: 6px;
  display: inline-block;
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.timeline-detail {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   PROJECTS SECTION - "Learn by Building"
   ========================================================================== */
.projects-container {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.pipeline-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.pipeline-heading {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: var(--text-main);
  text-align: center;
}

.pipeline-subtext {
  text-align: center;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 36px auto;
  font-size: 0.975rem;
}

/* The Workflow Chain */
.workflow-pipeline {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
  position: relative;
  align-items: center;
}

.workflow-node {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 10px;
  text-align: center;
  position: relative;
  transition: all var(--transition-fast);
}

.workflow-node:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.node-step {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.node-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
}

/* Project Highlights Cards */
.project-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-box {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.project-badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 14px;
  width: fit-content;
}

.project-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.project-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  flex-grow: 1;
}

.project-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  font-size: 0.75rem;
  background: var(--bg-subtle);
  color: var(--text-muted);
  padding: 3px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

/* ==========================================================================
   WHY LEARVION & ABOUT SECTIONS
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px auto;
}

.feature-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* About Section Card */
.about-card {
  background: linear-gradient(135deg, #0b1329 0%, #172554 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-card::after {
  content: '';
  position: absolute;
  right: -50px;
  bottom: -50px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.about-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.about-tag {
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  display: inline-block;
}

.about-card h2 {
  color: #ffffff;
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  margin-bottom: 24px;
}

.about-text {
  font-size: 1.15rem;
  line-height: 1.8;
  color: #cbd5e1;
  margin-bottom: 20px;
}

.about-text:last-of-type {
  margin-bottom: 36px;
}

.about-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 32px;
}

.pillar-item h4 {
  color: #ffffff;
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.pillar-item p {
  color: #94a3b8;
  font-size: 0.875rem;
  line-height: 1.5;
}

/* ==========================================================================
   PRICING & ENROLLMENT SECTION
   ========================================================================== */
.pricing-wrapper {
  max-width: 580px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-surface);
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 44px 38px;
  box-shadow: 0 20px 40px -15px rgba(2, 132, 199, 0.2);
  position: relative;
  text-align: center;
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 6px 18px;
  border-radius: var(--radius-full);
}

.pricing-course-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 12px;
  margin-bottom: 12px;
}

.pricing-amount {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  margin-bottom: 8px;
}

.amount-val {
  font-size: 3.25rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
}

.amount-period {
  font-size: 1rem;
  color: var(--text-muted);
}

.pricing-clarity {
  font-size: 0.875rem;
  color: #10b981;
  font-weight: 600;
  margin-bottom: 28px;
}

.pricing-features-list {
  list-style: none;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}

.pricing-features-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: var(--text-main);
}

.pricing-features-list li svg {
  color: #10b981;
  flex-shrink: 0;
}

/* ==========================================================================
   PAYMENT & REGISTRATION SECTIONS
   ========================================================================== */
.payment-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 48px;
  align-items: start;
}

.qr-pane {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.qr-box {
  background: #ffffff;
  border: 2px dashed #94a3b8;
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 16px;
  width: 260px;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.qr-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 4px;
}

.qr-badge-overlay {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  background: rgba(15, 23, 42, 0.9);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 4px;
  text-align: center;
}

.qr-upi-info {
  width: 100%;
}

.upi-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-top: 8px;
}

.copy-btn {
  font-size: 0.775rem;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid rgba(2, 132, 199, 0.2);
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: var(--primary);
  color: #ffffff;
}

.instructions-pane h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.instructions-lead {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.payment-steps {
  list-style: none;
  counter-reset: p-steps;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}

.payment-steps li {
  counter-increment: p-steps;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.975rem;
  color: var(--text-main);
  line-height: 1.5;
}

.payment-steps li::before {
  content: counter(p-steps);
  background: var(--primary);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.payment-alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 0.875rem;
  color: #92400e;
  line-height: 1.5;
}

.payment-alert svg {
  color: #d97706;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Registration Section */
.registration-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  box-shadow: var(--shadow-md);
  max-width: 820px;
  margin: 0 auto;
}

.registration-card h3 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.registration-note {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 32px auto;
}

.fields-collected-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 36px;
  text-align: left;
}

.fields-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.fields-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.field-pill {
  font-size: 0.85rem;
  background: #ffffff;
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.field-pill svg {
  color: var(--primary);
}

/* ==========================================================================
   FAQ SECTION (ACCORDION)
   ========================================================================== */
.faq-wrapper {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  background: none;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--primary-light);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
  padding-bottom: 20px;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #0b1329;
  color: #ffffff;
  padding: 64px 0 32px 0;
  border-top: 1px solid #1e293b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.4rem;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.footer-tagline {
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.footer-desc {
  color: #94a3b8;
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 440px;
}

.footer-links-col h4 {
  color: #ffffff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer-nav {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
}

.footer-nav a {
  color: #94a3b8;
  font-size: 0.925rem;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: #64748b;
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #0f172a;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--transition-normal);
  pointer-events: none;
  z-index: 9999;
}

.toast-notice.show {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS
   (320px, 375px, 768px, 1024px, 1440px)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .learn-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .overview-card {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 32px;
  }

  .payment-card {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .qr-pane {
    max-width: 360px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .section {
    padding: 64px 0;
  }

  /* Mobile Navigation Drawer */
  .mobile-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
    z-index: 999;
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    text-align: center;
    padding: 8px 0;
  }

  .header-cta .btn {
    display: none; /* Keep header clean on mobile, accessible via hero/sections */
  }

  /* Hero Adjustments */
  .hero-title {
    font-size: 2.2rem;
  }

  .floating-stat-card {
    position: static;
    margin-top: 16px;
  }

  /* Timeline for Mobile (Single-column layout) */
  .timeline-wrapper::before {
    left: 20px;
  }

  .timeline-item {
    justify-content: flex-start !important;
    padding-left: 48px;
  }

  .timeline-card {
    width: 100%;
  }

  .timeline-marker {
    left: 20px;
  }

  /* Projects & Workflow */
  .workflow-pipeline {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-cards-grid {
    grid-template-columns: 1fr;
  }

  .learn-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .about-pillars {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

@media (max-width: 480px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-title {
    font-size: 1.9rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .specs-grid {
    grid-template-columns: 1fr;
  }

  .workflow-pipeline {
    grid-template-columns: 1fr;
  }

  .overview-card,
  .payment-card,
  .registration-card,
  .pricing-card {
    padding: 24px 18px;
  }

  .qr-box {
    width: 220px;
    height: 220px;
  }

  .amount-val {
    font-size: 2.75rem;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}