/* ==========================================================================
   ISLA Design System & Layout Engine
    imperial Shipping & Logistics Academy
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. Google Fonts Import & CSS Reset
   -------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Cal+Sans&family=Manrope:wght@200;300;400;500;600;700;800&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: auto; /* Handled by Lenis for smooth scroll */
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
}

body {
  font-family: var(--font-sans);
  font-weight: 500;
  background-color: var(--color-bg-light);
  color: var(--color-text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   1. Design System Tokens (Custom Properties)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Light Sections */
  --color-bg-light: #F7F6F3;
  --color-bg-light-alt: #EDECE8;
  --color-bg-card: #FFFFFF;
  --color-text-primary: #231F20;
  --color-text-secondary: hsla(345, 4%, 12%, 0.82);
  --color-text-muted: hsla(345, 4%, 12%, 0.55);
  --color-border-light: hsla(345, 4%, 12%, 0.1);

  /* Colors - Dark Sections (Brand Navy) */
  --color-bg-dark: #253A7C;
  --color-bg-dark-surface: #1E306A;
  --color-text-on-dark: #FFFFFF;
  --color-text-on-dark-secondary: hsla(0, 0%, 100%, 0.88);
  --color-text-on-dark-muted: hsla(0, 0%, 100%, 0.62);
  --color-border-dark: hsla(0, 0%, 100%, 0.16);

  /* Shared Accent (Brand Gold) */
  --color-accent: #FFCA17;
  --color-accent-dim: hsla(47, 100%, 54%, 0.18);
  --color-accent-hover: #FFD44D;

  /* Typography — Per brand identity spec */
  --font-heading: 'Cal Sans', system-ui, sans-serif;   /* Headings & Sub-headings */
  --font-serif:   'Cal Sans', system-ui, sans-serif;   /* Alias — used in heading rules */
  --font-sans:    'Manrope', system-ui, sans-serif;    /* Body text, links, nav, UI */
  --font-body:    'Manrope', system-ui, sans-serif;    /* Alias — used in body rules */

  --font-display: clamp(2.25rem, 4.8vw + 1rem, 5.25rem);
  --font-h1: clamp(2rem, 3.6vw + 1rem, 4.25rem);
  --font-h2: clamp(1.5rem, 2.2vw + 0.8rem, 2.5rem);
  --font-h3: clamp(1.1rem, 0.8vw + 0.9rem, 1.5rem);
  --font-size-body: clamp(1rem, 0.25vw + 0.9rem, 1.125rem);
  --font-caption: clamp(0.8rem, 0.1vw + 0.75rem, 0.9rem);

  /* Spacing */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;
  --space-16: 128px;

  /* Motion */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.3s;
  --duration-base: 0.8s;
  --duration-slow: 1.2s;
  
  /* Utilities */
  --border-radius: 4px; /* Premium minimal websites use sharp, subtle radius */
  --transition-smooth: all var(--duration-fast) var(--ease-out-expo);
}

/* --------------------------------------------------------------------------
   2. Global Textures & Scrollbar
   -------------------------------------------------------------------------- */
.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Scrollbar Design */
::-webkit-scrollbar {
  width: 10px;
  background-color: var(--color-bg-light);
}

::-webkit-scrollbar-thumb {
  background-color: var(--color-accent-dim);
  border: 2px solid var(--color-bg-light);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background-color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   3. Utility Classes & Layout Containers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

.section-padding {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

@media (min-width: 1024px) {
  .section-padding {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
}

/* Image Placeholder Style */
.img-placeholder {
  background-color: #1C2333;
  width: 100%;
  height: 100%;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border-dark);
}

.img-placeholder span {
  font-family: var(--font-sans);
  font-size: var(--font-caption);
  color: var(--color-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
}

/* Production Image Standard Layout */
.production-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Typography Helpers */
.font-serif { font-family: var(--font-serif); }
.font-sans { font-family: var(--font-sans); }

.pre-headline {
  font-family: var(--font-sans);
  font-size: var(--font-caption);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  /* Navy on light sections — gold on cream fails WCAG contrast */
  color: var(--color-bg-dark);
  margin-bottom: var(--space-2);
  display: block;
}

/* On dark sections, restore brand gold for pre-headlines */
.dark-section .pre-headline {
  color: var(--color-accent);
}

.section-headline {
  font-family: var(--font-serif);
  font-size: var(--font-h1);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.15;
  letter-spacing: 2px;
  margin-bottom: var(--space-3);
}

.section-subcopy {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 600px;
  margin-bottom: var(--space-8);
}

.pull-quote {
  font-family: var(--font-serif);
  font-size: var(--font-h2);
  /* No italic — Cal Sans has no italic variant, avoid browser faux-italic */
  color: var(--color-accent);
  line-height: 1.25;
  letter-spacing: 0;
}

/* Buttons & CTAs */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--font-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border-radius: var(--border-radius);
}

/* Primary Dark State (e.g., in Hero on Dark) */
.btn-primary-dark {
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  background-color: transparent;
}

.btn-primary-dark:hover {
  background-color: var(--color-accent);
  /* Near-black text on bright gold for WCAG contrast */
  color: var(--color-text-primary);
}

/* Primary Light State (e.g., in Light Sections) */
.btn-primary-light {
  border: 1px solid var(--color-text-primary);
  color: var(--color-text-on-dark);
  background-color: var(--color-text-primary);
}

.btn-primary-light:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

/* Secondary CTA */
.btn-secondary {
  color: var(--color-text-on-dark);
  background-color: transparent;
  border: none;
  position: relative;
  padding-left: 0;
  padding-right: 0;
}

.btn-secondary::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--color-text-on-dark);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-fast) var(--ease-out-expo);
}

.btn-secondary:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* --------------------------------------------------------------------------
   4. Navigation Bar
   -------------------------------------------------------------------------- */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  z-index: 1010; /* Set higher than mobile-overlay (1005) to remain visible */
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
}

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

/* Brand Logo */
.logo {
  flex-shrink: 0;
  text-decoration: none;
  z-index: 1010;
  display: flex;
  align-items: center;
}

.logo-img {
  display: block;
  height: 64px;
  width: auto;
  object-fit: contain;
  /* Make logo white over dark hero background */
  filter: brightness(0) invert(1);
  transition: filter var(--duration-fast) var(--ease-out-expo);
}

/* Restore full-color logo once navbar has scrolled onto light background */
.header-nav.nav-scrolled .logo-img {
  filter: none;
}

/* Footer logo — white on dark footer background */
.footer-logo .logo-img {
  filter: brightness(0) invert(1);
}

/* Footer logo */
.footer-logo {
  margin-bottom: var(--space-3);
}

/* Desktop Links */
.nav-links {
  display: none;
  list-style: none;
  gap: var(--space-2);
}

@media (min-width: 1200px) {
  .nav-links {
    gap: var(--space-4);
  }
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  position: relative;
  padding: var(--space-1) 0;
  color: var(--color-text-on-dark-secondary); /* Default fallback color */
}

/* Active State Underline */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-fast) var(--ease-out-expo);
}

.nav-link.active::after,
.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Desktop Action CTA */
.nav-action {
  flex-shrink: 0;
  display: none;
  z-index: 1010;
}

/* Mobile Toggle Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 16px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1010;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-on-dark);
  transition: var(--transition-smooth);
}

/* Hamburger Active Transform */
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hamburger.open span {
  background-color: var(--color-text-on-dark) !important;
}

/* Mobile Navigation Overlay */
.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--color-bg-dark);
  z-index: 1005;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-links {
  list-style: none;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.mobile-link {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  color: var(--color-text-on-dark);
  text-decoration: none;
  display: block;
  padding: var(--space-1);
  transition: var(--transition-smooth);
}

.mobile-link:hover {
  color: var(--color-accent);
}

/* Header States based on scroll and active section */
/* State 1: Default Hero Over dark background */
.header-nav.nav-dark-state {
  color: var(--color-text-on-dark);
}
.header-nav.nav-dark-state .nav-link {
  color: var(--color-text-on-dark-secondary);
}
.header-nav.nav-dark-state .nav-link:hover {
  color: var(--color-text-on-dark);
}
.header-nav.nav-dark-state .btn-nav-cta {
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  background-color: transparent;
}
.header-nav.nav-dark-state .btn-nav-cta:hover {
  background-color: var(--color-accent);
  color: var(--color-text-primary);
}
.header-nav.nav-dark-state .hamburger span {
  background-color: var(--color-text-on-dark);
}

/* State 2: Over light sections on scroll */
.header-nav.nav-scrolled {
  height: 72px;
  background-color: rgba(247, 246, 243, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: 0 4px 30px rgba(13, 19, 33, 0.03);
}

/* Force dark text and elements when scrolled, as background is always light */
.header-nav.nav-scrolled .nav-link {
  color: var(--color-text-secondary) !important;
}

.header-nav.nav-scrolled .nav-link:hover {
  color: var(--color-text-primary) !important;
}

.header-nav.nav-scrolled .btn-nav-cta {
  border: 1px solid var(--color-text-primary) !important;
  color: var(--color-text-on-dark) !important;
  background-color: var(--color-text-primary) !important;
}

.header-nav.nav-scrolled .btn-nav-cta:hover {
  background-color: var(--color-accent) !important;
  border-color: var(--color-accent) !important;
  color: var(--color-text-primary) !important;
}

.header-nav.nav-scrolled .hamburger span {
  background-color: var(--color-text-primary) !important;
}

.header-nav.nav-light-state {
  color: var(--color-text-primary);
}
.header-nav.nav-light-state .nav-link {
  color: var(--color-text-secondary);
}
.header-nav.nav-light-state .nav-link:hover {
  color: var(--color-text-primary);
}
.header-nav.nav-light-state .btn-nav-cta {
  border: 1px solid var(--color-text-primary);
  color: var(--color-text-on-dark);
  background-color: var(--color-text-primary);
}
.header-nav.nav-light-state .btn-nav-cta:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}
.header-nav.nav-light-state .hamburger span {
  background-color: var(--color-text-primary);
}

/* Force header container to be transparent when mobile menu overlay drawer is active */
.header-nav.mobile-nav-open {
  background-color: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  border-bottom: none !important;
  box-shadow: none !important;
}

/* Desktop Breakpoint for Header */
@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }
  .nav-action {
    display: block;
  }
  .hamburger {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   5. S1 — Hero Section (DARK)
   -------------------------------------------------------------------------- */
#hero {
  min-height: 100vh;
  position: relative;
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 90px; /* Safe area for fixed navbar */
  padding-bottom: 80px; /* Safe area for scroll indicator */
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1E306A 0%, #253A7C 100%);
  z-index: 1;
}

/* Hero overlay removed — hero-bg gradient already provides the dark
   background. A separate semi-transparent overlay on top of itself
   adds no value and would obscure any future background image. */

#hero .container {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.hero-content {
  max-width: 850px;
  margin: 0 auto;
}

#hero .section-headline {
  color: var(--color-text-on-dark);
  font-size: var(--font-display);
  line-height: 1.1;
  letter-spacing: 2px;
  margin-bottom: var(--space-4);
}

#hero .section-subcopy {
  color: var(--color-text-on-dark-secondary);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-4);
}

.hero-ctas {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

/* Hero Scroll Indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.scroll-line {
  width: 1px;
  height: 60px;
  background-color: var(--color-border-dark);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 30%;
  background-color: var(--color-accent);
  animation: scroll-pulse 2s infinite ease-in-out;
}

@keyframes scroll-pulse {
  0% { transform: translateY(-100%); }
  70% { transform: translateY(330%); }
  100% { transform: translateY(330%); }
}

@media (min-width: 768px) {
  #hero .container {
    text-align: left;
  }
  .hero-content {
    margin: 0;
    max-width: 780px;
  }
  .hero-ctas {
    flex-direction: row;
    justify-content: flex-start;
    gap: var(--space-4);
  }
}

@media (min-width: 1024px) {
  #hero .container {
    padding-left: 10%; /* Asymmetric visual alignment */
  }
}

/* --------------------------------------------------------------------------
   6. S2 — About ISLA (LIGHT)
   -------------------------------------------------------------------------- */
#about {
  background-color: var(--color-bg-light);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: center;
}

.about-text-column {
  padding-right: 0;
}

.about-divider {
  width: 40px;
  height: 1px;
  background-color: var(--color-accent-dim);
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
}

.about-mission-statement {
  font-family: var(--font-sans);
  font-size: var(--font-caption);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--space-4);
}

.about-image-column {
  width: 100%;
  height: 360px;
}

.about-image-column .img-placeholder,
.about-image-column .production-img {
  border-right: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 45fr 55fr;
    gap: var(--space-8);
  }
  
  .about-text-column {
    padding-right: var(--space-4);
  }
  
  .about-image-column {
    height: 512px;
    margin-left: -5%; /* Asymmetric overlay overlap */
    width: 105%;
  }
}

/* --------------------------------------------------------------------------
   7. S3 — Why Choose ISLA (LIGHT ALT)
   -------------------------------------------------------------------------- */
#why-choose-isla {
  background-color: var(--color-bg-light-alt);
}

/* USP Grid: 3 columns x 2 rows on desktop */
.usp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.usp-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  padding: var(--space-4);
  position: relative;
  box-shadow: 0 2px 16px rgba(37, 58, 124, 0.06);
  transition: var(--transition-smooth);
}

.usp-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
}

.usp-number {
  font-family: var(--font-sans);
  font-size: 1.75rem;
  font-weight: 200;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
  display: block;
}

.usp-title {
  font-family: var(--font-serif);
  font-size: var(--font-h3);
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.usp-desc {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
}

/* Tall Industrial Visits USP card */
.usp-card.usp-featured {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-4);
}

.usp-featured .usp-featured-img {
  height: 200px;
  margin-top: var(--space-3);
}

.usp-featured .usp-featured-img .img-placeholder {
  background-color: #161D2B;
}

.usp-featured .usp-featured-img .production-img {
  border: 1px solid var(--color-border-light);
}

/* USP 06 Limited Batch - Full Width Center Strip */
.usp-footer-strip {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  border-top: 1px solid var(--color-border-light);
  margin-top: var(--space-8);
}

.usp-footer-strip p {
  font-family: var(--font-serif);
  font-size: var(--font-h2);
  font-style: italic;
  color: var(--color-text-primary);
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.usp-footer-strip p::before,
.usp-footer-strip p::after {
  content: " * ";
  color: var(--color-accent);
  font-family: var(--font-sans);
  font-weight: 600;
  vertical-align: middle;
}

@media (min-width: 768px) {
  .usp-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (min-width: 1024px) {
  .usp-grid {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, auto);
    gap: var(--space-6);
  }

  .usp-card.usp-featured {
    grid-column: 3 / 4;
    grid-row: 1 / 3;
  }
  
  .usp-featured .usp-featured-img {
    height: 100%;
    min-height: 240px;
  }
}

/* --------------------------------------------------------------------------
   8. S4 — Courses (LIGHT)
   -------------------------------------------------------------------------- */
#courses {
  background-color: var(--color-bg-light);
}

/* Courses section gets white background + gold top accent to visually
   distinguish it from the cream Why-ISLA section directly above it */
.courses-section {
  background-color: var(--color-bg-card);
  border-top: 3px solid var(--color-accent);
}


.courses-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border-light);
  margin-top: var(--space-8);
}

.course-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: var(--transition-smooth);
  position: relative;
}

/* Hover Effect background highlight */
.course-row::before {
  content: '';
  position: absolute;
  top: 0;
  left: -5%;
  width: 110%;
  height: 100%;
  background-color: var(--color-bg-light-alt);
  opacity: 0;
  z-index: 0;
  transition: var(--transition-smooth);
}

.course-row:hover::before {
  opacity: 0.55;
}

/* Ensure content elements sit above the hover background overlay */
.course-row-main,
.course-row-body,
.course-row-action {
  position: relative;
  z-index: 1;
}

.course-row-main {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.course-number {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--color-accent);
  margin-top: 2px;
}

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

.course-type {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.course-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--color-text-primary);
  line-height: 1.25;
}

.course-desc {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.course-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.course-tag {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  background-color: var(--color-bg-light-alt);
  color: var(--color-text-secondary);
  padding: 4px 8px;
  border-radius: 2px;
  letter-spacing: 0.05em;
}

.course-row-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

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

.stat-value {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text-primary);
  line-height: 1.1;
}

.stat-label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}

.course-action-btn {
  padding-left: 0 !important;
  font-weight: 600;
  color: var(--color-bg-dark) !important;
}

.course-action-btn::after {
  background-color: var(--color-accent) !important;
}

.course-action-btn:hover {
  color: var(--color-bg-dark) !important;
}

@media (min-width: 768px) {
  .course-row-action {
    justify-content: flex-start;
    gap: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .course-row {
    grid-template-columns: 35fr 40fr 25fr;
    gap: var(--space-6);
    padding: var(--space-8) 0;
  }
  
  .course-title {
    font-size: 1.85rem;
  }

  .course-row-body {
    padding-right: var(--space-4);
    margin-bottom: 0;
  }

  .course-row-action {
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
    text-align: right;
    height: 100%;
    gap: var(--space-4);
  }

  .course-stat {
    margin-bottom: var(--space-2);
  }
}

/* --------------------------------------------------------------------------
   9. S5 — Industry Exposure (DARK - Horizontal Scroll)
   -------------------------------------------------------------------------- */
#industry-exposure {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  overflow: hidden;
  position: relative;
}

.exposure-wrapper {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.exposure-text-block {
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  margin-bottom: var(--space-6);
}

.exposure-text-block .pre-headline {
  color: var(--color-accent);
}

.exposure-text-block .section-headline {
  color: var(--color-text-on-dark);
}

.exposure-text-block .section-subcopy {
  color: var(--color-text-on-dark-secondary);
  max-width: 100%;
}

.exposure-quote {
  font-family: var(--font-serif);
  font-size: var(--font-h3);
  font-style: italic;
  color: var(--color-accent);
  border-left: 2px solid var(--color-accent-dim);
  padding-left: var(--space-2);
  margin-top: var(--space-3);
  display: block;
}

/* Visual Strip: side-by-side marquee driven by ScrollTrigger */
.exposure-strip-outer {
  width: 100%;
  overflow: hidden;
}

.exposure-strip-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  width: 100%;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.exposure-img-item {
  width: 100%;
  height: 256px;
  position: relative;
}

.exposure-img-item .img-placeholder,
.exposure-img-item .production-img {
  border-left: 1px solid var(--color-accent-dim);
}

@media (min-width: 768px) {
  .exposure-strip-inner {
    flex-direction: row;
    width: max-content; /* Horizontal strip preparation */
    padding-left: 0;
    padding-right: 0;
  }
  
  .exposure-img-item {
    width: 384px;
    height: 320px;
    flex-shrink: 0;
  }
}

@media (min-width: 1024px) {
  #industry-exposure {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }

  .exposure-wrapper {
    flex-direction: row;
    align-items: center;
    position: relative;
  }

  .exposure-text-block {
    width: 35%;
    flex-shrink: 0;
    position: sticky;
    top: 144px;
    align-self: flex-start;
    padding-left: var(--space-8);
    padding-right: var(--space-4);
    margin-bottom: 0;
  }

  .exposure-strip-outer {
    width: 65%;
    margin-left: auto;
  }

  .exposure-strip-inner {
    display: flex;
    gap: var(--space-4);
    /* Set horizontal layout for ScrollTrigger scrub */
    flex-wrap: nowrap;
    will-change: transform;
  }

  .exposure-img-item {
    width: 416px;
    height: 480px;
  }
}

/* --------------------------------------------------------------------------
   10. S6 — Case Study Learning (LIGHT ALT)
   -------------------------------------------------------------------------- */
#case-study-learning {
  background-color: var(--color-bg-light-alt);
}

.case-study-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.case-study-sticky-column {
  margin-bottom: var(--space-4);
}

.case-study-outcomes {
  list-style: none;
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.case-study-outcomes li {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  font-weight: 500;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.case-study-outcomes li::before {
  content: '—';
  color: var(--color-accent);
  font-weight: bold;
}

/* Pillars content scrolling column */
.case-study-scroll-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.pillar-item {
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.pillar-item:first-child {
  border-top: none;
}

.pillar-number {
  font-family: var(--font-sans);
  font-size: 3.5rem;
  font-weight: 200;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
  display: block;
}

.pillar-title {
  font-family: var(--font-serif);
  font-size: var(--font-h2);
  letter-spacing: 2px;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.pillar-desc {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
}

/* Case study footer closing statement */
.case-study-footer {
  text-align: center;
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--space-6);
}

.case-study-footer p {
  font-family: var(--font-serif);
  font-size: var(--font-h3);
  font-style: italic;
  color: var(--color-accent);
}

@media (min-width: 1024px) {
  .case-study-wrapper {
    grid-template-columns: 35fr 65fr;
    gap: var(--space-8);
  }
  
  .case-study-sticky-column {
    position: sticky;
    top: 120px;
    align-self: flex-start;
    margin-bottom: 0;
  }
  
  .case-study-scroll-column {
    padding-left: var(--space-4);
  }

  .pillar-number {
    font-size: 4rem;
  }
}

/* --------------------------------------------------------------------------
   11. S7 — Admission Process (LIGHT)
   -------------------------------------------------------------------------- */
#admission-process {
  background-color: var(--color-bg-light);
}

/* Horizontal step row on desktop */
.admission-steps {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

/* SVG Line container linking steps on desktop */
.admission-connecting-line {
  display: none;
  position: absolute;
  top: 15px; /* Aligns with step label */
  left: 0;
  width: 75%; /* Spans across first 3 steps and terminates at CTA card */
  height: 1px;
  background-color: var(--color-accent-dim);
  z-index: 1;
}

.admission-line-progress {
  width: 0;
  height: 100%;
  background-color: var(--color-accent);
  transition: width var(--duration-slow) var(--ease-out-expo);
}

.step-card {
  position: relative;
  z-index: 2;
  background-color: var(--color-bg-light); /* Blends into section background */
  padding-right: var(--space-4);
}

.step-card-cta {
  background-color: var(--color-bg-light-alt);
  border: 1px solid var(--color-accent-dim);
  padding: var(--space-4);
  border-radius: var(--border-radius);
  transition: var(--transition-smooth);
}

.step-card-cta:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 20px rgba(13, 19, 33, 0.03);
}

.step-card-cta .step-label-action {
  background-color: var(--color-bg-light-alt);
  padding-right: var(--space-2);
}

.step-cta-btn {
  margin-top: var(--space-3);
  width: 100%;
}

.step-label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
  display: inline-block;
  background-color: var(--color-bg-light);
  padding-right: var(--space-2);
}

.step-title {
  font-family: var(--font-serif);
  font-size: var(--font-h3);
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.step-desc {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
}

.admission-limited-batch {
  text-align: center;
  font-family: var(--font-serif);
  font-size: var(--font-h3);
  font-style: italic;
  color: var(--color-accent);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .admission-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

@media (min-width: 1200px) {
  .admission-steps {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
  }
  
  .admission-connecting-line {
    display: block;
  }
  
  .step-cta-btn {
    width: auto;
  }
}

/* --------------------------------------------------------------------------
   12. S8 — Contact & Enquiry (LIGHT ALT)
   -------------------------------------------------------------------------- */
#contact {
  background-color: var(--color-bg-light-alt);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.contact-info-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-brand-statement {
  font-family: var(--font-serif);
  font-size: var(--font-h3);
  font-style: italic;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.contact-details {
  list-style: none;
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.contact-detail-label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-1);
}

.contact-detail-value {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-primary);
}

/* Enquiry Form Styling (Borderless floating label pattern) */
.contact-form-column {
  background-color: transparent;
}

.enquiry-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.form-group {
  position: relative;
  padding-top: var(--space-3);
}

.form-input {
  width: 100%;
  padding: var(--space-1) 0;
  border: none;
  border-bottom: 1px solid var(--color-border-light);
  background-color: transparent;
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out-expo);
}

.form-input:focus {
  border-bottom-color: var(--color-accent);
}

.form-label {
  position: absolute;
  top: var(--space-3);
  left: 0;
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-muted);
  pointer-events: none;
  transition: var(--transition-smooth);
}

/* Floating behavior */
.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: -8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

/* Dropdown select custom rules */
select.form-input {
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

.form-group-select::after {
  content: '↓';
  position: absolute;
  right: 0;
  bottom: var(--space-1);
  color: var(--color-accent);
  pointer-events: none;
}

.form-group-select .form-label {
  /* Prevent overlap with default selected value */
  top: -8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.form-group textarea.form-input {
  min-height: 96px;
  resize: vertical;
}

.form-submit-row {
  margin-top: var(--space-2);
}

/* Success message panel on form submit */
.form-success-message {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-6) var(--space-4);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-accent);
  box-shadow: 0 4px 20px rgba(13, 19, 33, 0.05);
}

.success-icon {
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.success-title {
  font-family: var(--font-serif);
  font-size: var(--font-h3);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.success-desc {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 40fr 60fr;
    gap: var(--space-8);
  }
}

/* --------------------------------------------------------------------------
   13. Footer (DARK)
   -------------------------------------------------------------------------- */
.footer-main {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding-top: var(--space-8);
  padding-bottom: var(--space-4);
  border-top: 1px solid var(--color-border-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.footer-col-brand .logo {
  margin-bottom: var(--space-3);
  display: block;
}

.footer-col-brand p {
  font-family: var(--font-sans);
  font-size: var(--font-caption);
  color: var(--color-text-on-dark-secondary);
  line-height: 1.6;
}

.footer-col-title {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  display: block;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  font-family: var(--font-sans);
  font-size: var(--font-caption);
  color: var(--color-text-on-dark-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

.footer-contact-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-contact-details li {
  font-family: var(--font-sans);
  font-size: var(--font-caption);
  color: var(--color-text-on-dark-secondary);
}

/* Bottom Copyright Bar */
.footer-bottom {
  border-top: 1px solid var(--color-border-dark);
  padding-top: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-align: center;
}

.footer-copyright {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--color-text-on-dark-muted);
}

.footer-legal-links {
  display: flex;
  gap: var(--space-3);
}

.footer-legal-links a {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--color-text-on-dark-muted);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.footer-legal-links a:hover {
  color: var(--color-accent);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-6);
  }
  
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* --------------------------------------------------------------------------
   14. Accessibility & Animation Safeguards (Reduced Motion)
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-delay: 0s !important;
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
    scroll-behavior: auto !important;
  }
  
  .hero-scroll-indicator,
  .scroll-line::after,
  .admission-line-progress {
    animation: none !important;
    transition: none !important;
  }
  
  .admission-line-progress {
    width: 100% !important;
  }
  
  .course-card:hover {
    transform: none !important;
  }
}