/* ========================================
   TIDAL WAVE INSTITUTE — Design Tokens
   Deep Navy → Purple palette
   Gold accents for academic prestige
   Connected to TWW through font pairing
   ======================================== */

:root {
  /* Type Scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 8rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Font Families - Same as TWW for brand connection */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Work Sans', 'Helvetica Neue', sans-serif;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;
}

/* ========================================
   LIGHT MODE (default)
   ======================================== */
:root,
[data-theme='light'] {
  /* Surfaces — cool off-white */
  --color-bg: #F5F4F8;
  --color-surface: #FAFAFC;
  --color-surface-2: #FFFFFF;
  --color-surface-offset: #EDEAF2;
  --color-surface-offset-2: #E5E1ED;
  --color-divider: #D5D0E0;
  --color-border: #C8C2D6;

  /* Text */
  --color-text: #1A1428;
  --color-text-muted: #6B6280;
  --color-text-faint: #A9A2BA;
  --color-text-inverse: #F5F4F8;

  /* Primary — Deep Navy */
  --color-primary: #0D1B3E;
  --color-primary-hover: #162850;
  --color-primary-active: #1F3565;
  --color-primary-highlight: #D6DBE8;

  /* Accent — Rich Purple */
  --color-accent: #5C2D91;
  --color-accent-hover: #4A2375;
  --color-accent-active: #381A59;
  --color-accent-highlight: #E0D4F0;

  /* Gold — Academic prestige */
  --color-gold: #C4A052;
  --color-gold-hover: #A8883E;
  --color-gold-active: #8C702E;
  --color-gold-highlight: #F2EBD8;

  /* Teal — TWW connection */
  --color-teal: #005F73;
  --color-teal-hover: #004E5F;
  --color-teal-active: #003D4B;

  /* Semantic */
  --color-success: #2D7A3F;
  --color-error: #C23B3B;

  /* Gradient */
  --gradient-brand: linear-gradient(135deg, #0D1B3E 0%, #1A2855 30%, #3A2070 65%, #5C2D91 100%);
  --gradient-subtle: linear-gradient(135deg, #0D1B3E 0%, #2A1D5A 100%);
  --gradient-gold: linear-gradient(90deg, #C4A052, #D4B872);

  /* Shadows */
  --shadow-sm: 0 1px 2px oklch(0.2 0.02 280 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.2 0.02 280 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.2 0.02 280 / 0.12);
}

/* ========================================
   DARK MODE
   ======================================== */
[data-theme='dark'] {
  --color-bg: #0A0B12;
  --color-surface: #11121C;
  --color-surface-2: #171826;
  --color-surface-offset: #0F1018;
  --color-surface-offset-2: #141520;
  --color-divider: #1E1F2E;
  --color-border: #2A2B3E;

  --color-text: #D8D4E4;
  --color-text-muted: #8A83A0;
  --color-text-faint: #5A5470;
  --color-text-inverse: #0A0B12;

  --color-primary: #8B9CC8;
  --color-primary-hover: #A0AED8;
  --color-primary-active: #7488B8;
  --color-primary-highlight: #1A1D30;

  --color-accent: #A87FD4;
  --color-accent-hover: #B896E0;
  --color-accent-active: #9568C4;
  --color-accent-highlight: #231A35;

  --color-gold: #D4B872;
  --color-gold-hover: #E0CA90;
  --color-gold-active: #C4A55E;
  --color-gold-highlight: #2A2518;

  --color-teal: #4FAAB8;
  --color-teal-hover: #68BCC8;

  --color-success: #5CB87A;
  --color-error: #E06060;

  --gradient-brand: linear-gradient(135deg, #0D1020 0%, #1A1540 30%, #2A1855 65%, #3A2070 100%);
  --gradient-subtle: linear-gradient(135deg, #0D1020 0%, #1A1540 100%);

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0A0B12;
    --color-surface: #11121C;
    --color-surface-2: #171826;
    --color-surface-offset: #0F1018;
    --color-surface-offset-2: #141520;
    --color-divider: #1E1F2E;
    --color-border: #2A2B3E;
    --color-text: #D8D4E4;
    --color-text-muted: #8A83A0;
    --color-text-faint: #5A5470;
    --color-text-inverse: #0A0B12;
    --color-primary: #8B9CC8;
    --color-primary-hover: #A0AED8;
    --color-primary-active: #7488B8;
    --color-primary-highlight: #1A1D30;
    --color-accent: #A87FD4;
    --color-accent-hover: #B896E0;
    --color-accent-active: #9568C4;
    --color-accent-highlight: #231A35;
    --color-gold: #D4B872;
    --color-gold-hover: #E0CA90;
    --color-gold-active: #C4A55E;
    --color-gold-highlight: #2A2518;
    --color-teal: #4FAAB8;
    --color-teal-hover: #68BCC8;
    --color-success: #5CB87A;
    --color-error: #E06060;
    --gradient-brand: linear-gradient(135deg, #0D1020 0%, #1A1540 30%, #2A1855 65%, #3A2070 100%);
    --gradient-subtle: linear-gradient(135deg, #0D1020 0%, #1A1540 100%);
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
  }
}

/* ========================================
   GLOBAL STYLES
   ======================================== */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container--narrow {
  max-width: var(--content-default);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow 0.3s var(--ease-out);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  max-width: var(--content-wide);
  margin-inline: auto;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.header__logo-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.header__logo-tagline {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-top: 1px;
}

/* Desktop Nav */
.nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
  }
}

.nav__item {
  position: relative;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-interactive), background var(--transition-interactive);
  cursor: pointer;
  white-space: nowrap;
}

.nav__item:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.nav__item--active {
  color: var(--color-text);
}

.nav__item--flagship {
  color: var(--color-gold);
  font-weight: 600;
}

.nav__item--flagship:hover {
  color: var(--color-gold-hover);
  background: var(--color-gold-highlight);
}

/* Dropdown arrow */
.nav__item--has-dropdown::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-left: 6px;
  margin-bottom: 2px;
  transition: transform var(--transition-interactive);
}

.nav__item--has-dropdown:hover::after {
  transform: rotate(-135deg);
}

/* Simple Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out), visibility 200ms;
  z-index: 200;
}

.nav__item:hover > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown__link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.dropdown__link:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.dropdown__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  padding: var(--space-2) var(--space-3) var(--space-1);
}

.dropdown__divider {
  height: 1px;
  background: var(--color-divider);
  margin: var(--space-1) var(--space-2);
}

/* Mega Menu for Programs */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: 780px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out), visibility 200ms;
  z-index: 200;
}

.nav__item:hover > .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-menu__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.mega-menu__track {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mega-menu__track-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--color-divider);
}

.mega-menu__track-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.mega-menu__track-icon--business {
  background: linear-gradient(135deg, #C4A052, #D4B872);
  color: #1A1428;
}

.mega-menu__track-icon--clinical {
  background: linear-gradient(135deg, #005F73, #0A8098);
  color: #fff;
}

.mega-menu__track-icon--leadership {
  background: linear-gradient(135deg, #5C2D91, #7B45B0);
  color: #fff;
}

.mega-menu__track-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.mega-menu__track-hours {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 400;
}

.mega-menu__course {
  display: block;
  padding: var(--space-1) var(--space-2);
  font-size: 13px;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), background var(--transition-interactive);
  line-height: 1.4;
}

.mega-menu__course:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.mega-menu__course-code {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.03em;
}

.mega-menu__footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mega-menu__footer-text {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.mega-menu__footer-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

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

/* CTA Button (nav) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-5);
  transition: background var(--transition-interactive), color var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
  white-space: nowrap;
  cursor: pointer;
}

.btn--primary {
  background: var(--gradient-brand);
  color: #fff;
  border: none;
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

.btn--gold {
  background: var(--gradient-gold);
  color: #1A1428;
  border: none;
  font-weight: 700;
}

.btn--gold:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px oklch(from var(--color-gold) l c h / 0.3);
}

.btn--lg {
  padding: var(--space-3) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

/* Mobile hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  border: none;
  background: none;
}

@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }
}

.hamburger__line {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.hamburger--active .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger--active .hamburger__line:nth-child(2) {
  opacity: 0;
}
.hamburger--active .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 90;
  padding: 80px var(--space-6) var(--space-8);
  overflow-y: auto;
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
}

.mobile-nav--open {
  display: block;
  opacity: 1;
}

.mobile-nav__section {
  margin-bottom: var(--space-6);
}

.mobile-nav__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

.mobile-nav__link {
  display: block;
  padding: var(--space-2) 0;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-divider);
}

.mobile-nav__link--flagship {
  color: var(--color-gold);
  font-weight: 600;
}

.mobile-nav__course {
  display: block;
  padding: var(--space-1) 0 var(--space-1) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  position: relative;
  min-height: auto;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--gradient-brand);
}

@media (min-width: 768px) {
  .hero {
    min-height: 85vh;
  }
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 70% 40%, oklch(0.35 0.12 290 / 0.3), transparent),
    radial-gradient(ellipse 60% 60% at 20% 80%, oklch(0.25 0.08 220 / 0.4), transparent);
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='256' height='256' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  z-index: 2;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-24) var(--space-4) var(--space-16);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .hero__content {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    padding: var(--space-32) var(--space-4) var(--space-20);
  }
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
  background: oklch(from var(--color-gold) l c h / 0.12);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid oklch(from var(--color-gold) l c h / 0.2);
  margin-bottom: var(--space-4);
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-gold);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  color: #fff;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.hero__title em {
  font-style: italic;
  color: var(--color-gold);
}

.hero__subtitle {
  font-size: var(--text-base);
  color: oklch(0.85 0.02 280);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  max-width: 52ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero__visual {
  display: none;
}

@media (min-width: 768px) {
  .hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
  }
}

.hero__card {
  background: oklch(1 0 0 / 0.06);
  border: 1px solid oklch(1 0 0 / 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  max-width: 340px;
  width: 100%;
}

.hero__card-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}

.hero__card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: #fff;
  margin-bottom: var(--space-3);
}

.hero__card-desc {
  font-size: var(--text-sm);
  color: oklch(0.8 0.02 280);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.hero__card-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.hero__card-stat {
  text-align: center;
  padding: var(--space-2);
  background: oklch(1 0 0 / 0.05);
  border-radius: var(--radius-md);
}

.hero__card-stat-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: #fff;
}

.hero__card-stat-label {
  font-size: 11px;
  color: oklch(0.7 0.02 280);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ========================================
   STATS BAR
   ======================================== */
.stats-bar {
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-6) var(--space-4);
}

.stats-bar__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .stats-bar__inner {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stats-bar__item {
  text-align: center;
}

.stats-bar__value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.stats-bar__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
  margin-top: var(--space-1);
}

/* ========================================
   FLAGSHIP — PLP CERTIFICATION
   ======================================== */
.flagship {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-4);
  background: var(--color-bg);
}

.flagship__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .flagship__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
  }
}

.flagship__content {
  order: 2;
}

@media (min-width: 768px) {
  .flagship__content {
    order: 1;
  }
}

.flagship__overline {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}

.flagship__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.flagship__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.flagship__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.flagship__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.flagship__feature-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.flagship__feature-icon svg {
  width: 14px;
  height: 14px;
  color: var(--color-accent);
}

.flagship__visual {
  order: 1;
}

@media (min-width: 768px) {
  .flagship__visual {
    order: 2;
  }
}

.flagship__card {
  background: var(--gradient-brand);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.flagship__card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: oklch(0.5 0.15 290 / 0.2);
  filter: blur(60px);
}

.flagship__card-inner {
  position: relative;
  z-index: 1;
}

.flagship__card-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #1A1428;
  background: var(--gradient-gold);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.flagship__card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.15;
  margin-bottom: var(--space-6);
}

.flagship__card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.flagship__card-item {
  background: oklch(1 0 0 / 0.08);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  text-align: center;
}

.flagship__card-item-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
}

.flagship__card-item-label {
  font-size: 11px;
  color: oklch(0.8 0.02 280);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ========================================
   TRACKS / PROGRAMS
   ======================================== */
.tracks {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-4);
  background: var(--color-surface);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

.section-overline {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.tracks__grid {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .tracks__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.track-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive);
  display: flex;
  flex-direction: column;
}

.track-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.track-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.track-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.track-card__icon--business {
  background: linear-gradient(135deg, #C4A052, #D4B872);
  color: #1A1428;
}

.track-card__icon--clinical {
  background: linear-gradient(135deg, #005F73, #0A8098);
  color: #fff;
}

.track-card__icon--leadership {
  background: linear-gradient(135deg, #5C2D91, #7B45B0);
  color: #fff;
}

.track-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
}

.track-card__meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: 2px;
}

.track-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.track-card__courses {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-4) 0;
  flex: 1;
}

.track-card__course {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.track-card__course:last-child {
  border-bottom: none;
}

.track-card__course-code {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.02em;
  flex-shrink: 0;
  min-width: 54px;
}

.track-card__course-name {
  color: var(--color-text-muted);
}

.track-card__footer {
  margin-top: auto;
  padding-top: var(--space-3);
}

.track-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.track-card__link:hover {
  color: var(--color-accent-hover);
}

.track-card__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-interactive);
}

.track-card__link:hover svg {
  transform: translateX(3px);
}

/* ========================================
   WHY TWI
   ======================================== */
.why {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-4);
  background: var(--color-bg);
}

.why__grid {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .why__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
}

.why-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  transition: border-color var(--transition-interactive);
}

.why-card:hover {
  border-color: var(--color-accent-highlight);
}

.why-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.why-card__icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
}

.why-card__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.why-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ========================================
   TWW CONNECTION BANNER
   ======================================== */
.tww-banner {
  padding: clamp(var(--space-8), 6vw, var(--space-16)) var(--space-4);
  background: var(--gradient-subtle);
  position: relative;
  overflow: hidden;
}

.tww-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='256' height='256' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
}

.tww-banner__inner {
  position: relative;
  max-width: var(--content-default);
  margin-inline: auto;
  text-align: center;
  color: #fff;
}

.tww-banner__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}

.tww-banner__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  line-height: 1.2;
}

.tww-banner__desc {
  font-size: var(--text-base);
  color: oklch(0.8 0.02 280);
  margin-bottom: var(--space-6);
  max-width: 55ch;
  margin-inline: auto;
  line-height: 1.6;
}

.tww-banner__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  background: oklch(1 0 0 / 0.1);
  border: 1px solid oklch(1 0 0 / 0.15);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  transition: background var(--transition-interactive);
}

.tww-banner__link:hover {
  background: oklch(1 0 0 / 0.18);
}

/* ========================================
   CTA
   ======================================== */
.cta {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-4);
  background: var(--color-surface);
  text-align: center;
}

.cta__inner {
  max-width: 600px;
  margin-inline: auto;
}

.cta__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.cta__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-6);
  margin-inline: auto;
}

.cta__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-primary);
  color: oklch(0.85 0.02 280);
  padding: var(--space-12) var(--space-4) var(--space-6);
}

[data-theme='dark'] .footer {
  background: #060710;
}

.footer__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: #fff;
  text-decoration: none;
}

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

.footer__brand-desc {
  font-size: var(--text-sm);
  color: oklch(0.65 0.02 280);
  line-height: 1.6;
}

.footer__tww-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-gold);
  text-decoration: none;
  font-weight: 500;
}

.footer__tww-link:hover {
  text-decoration: underline;
}

.footer__col-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: oklch(0.55 0.02 280);
  margin-bottom: var(--space-3);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__link {
  font-size: var(--text-sm);
  color: oklch(0.7 0.02 280);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer__link:hover {
  color: #fff;
}

.footer__bottom {
  padding-top: var(--space-6);
  border-top: 1px solid oklch(1 0 0 / 0.08);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: oklch(0.5 0.02 280);
}

/* ========================================
   SCROLL ANIMATIONS (JS IntersectionObserver)
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}