/* ==========================================================================
   Design Tokens & Modern Styling Framework
   ========================================================================== */
:root {
  /* Type Scale Engine */
  --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, 1.35rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.25rem);

  /* Precise Spacing System */
  --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;

  /* Premium Light Canvas Theme Palette */
  --color-bg: #f8f7f4;
  --color-surface: #ffffff;
  --color-surface-2: #fdfdfc;
  --color-surface-offset: #f1f0ec;
  --color-text: #1e2019;
  --color-text-muted: #5c5f58;
  --color-text-faint: #969990;
  --color-primary: #005a60;
  --color-primary-hover: #004348;
  --color-primary-soft: #e2f1f2;
  --color-accent: #c48200;
  --color-border: #e0ded9;

  /* Structural Geometry definitions */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;

  /* Dynamic Depth Shadows */
  --shadow-sm: 0 2px 8px rgba(30, 32, 25, 0.04);
  --shadow-md: 0 12px 34px rgba(30, 32, 25, 0.07);
  --shadow-lg: 0 24px 60px rgba(30, 32, 25, 0.12);

  --content-default: 1160px;
  --transition-smooth: 320ms cubic-bezier(0.21, 1.02, 0.43, 1.01);
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Work Sans', system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
  /* Editorial Rich Dark Canvas Theme Palette */
  --color-bg: #121311;
  --color-surface: #1a1c18;
  --color-surface-2: #21241f;
  --color-surface-offset: #292d26;
  --color-text: #f3f4f0;
  --color-text-muted: #a4a89e;
  --color-text-faint: #6e7269;
  --color-primary: #4dbbc7;
  --color-primary-hover: #69ccd7;
  --color-primary-soft: #203133;
  --color-accent: #f5b025;
  --color-border: #2c2f29;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 12px 34px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.6);
}

/* ==========================================================================
   Global Normalizations & Core Typography Hierarchy
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: 
    radial-gradient(circle at 10% 15%, rgba(0, 90, 96, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 90% 85%, rgba(196, 130, 0, 0.04) 0%, transparent 40%);
  min-height: 100vh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  color: var(--color-text);
  font-weight: 600;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-smooth);
}
a:hover { color: var(--color-primary-hover); }

.site-wrapper { 
  max-width: var(--content-default); 
  margin: 0 auto; 
  padding-inline: var(--space-5); 
}

/* ==========================================================================
   Header Component Structure
   ========================================================================== */
.site-header {
  background: rgba(248, 247, 244, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 1040;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-smooth);
}
[data-theme="dark"] .site-header {
  background: rgba(18, 19, 17, 0.85);
}

.brand-text {
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: clamp(0.95rem, 0.8rem + 0.5vw, 1.2rem);
}

.navbar-brand span.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #ffffff, var(--color-surface-offset));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--space-3);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 255, 255, 0.6);
}
[data-theme="dark"] .navbar-brand span.logo-mark {
  background: linear-gradient(135deg, var(--color-surface-2), var(--color-border));
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.logo-letter { 
  font-family: var(--font-display); 
  font-size: 1.4rem; 
  font-weight: bold;
  color: #005a60; 
}
[data-theme="dark"] .logo-letter { color: #4dbbc7; }

.nav-link { 
  font-size: var(--text-sm); 
  font-weight: 500; 
  color: var(--color-text-muted) !important;
  padding: var(--space-2) var(--space-3) !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition-smooth);
}
.nav-link:hover {
  color: var(--color-primary) !important;
  background-color: var(--color-primary-soft);
}

.nav-cta { 
  border-radius: var(--radius-full) !important; 
  padding-inline: var(--space-5) !important;
  font-weight: 500;
}

.theme-toggle-btn { 
  border-radius: 50%; 
  border: 1px solid var(--color-border); 
  width: 40px; 
  height: 40px; 
  display: flex; 
  align-items: center; 
  justify-content: center;
  color: var(--color-text);
  background: var(--color-surface);
  transition: all var(--transition-smooth);
}
.theme-toggle-btn:hover {
  background: var(--color-surface-offset);
  transform: rotate(15deg);
}

/* ==========================================================================
   Hero Section Custom UI
   ========================================================================== */
.hero { padding-block: clamp(var(--space-12), 10vw, var(--space-24)); }
.hero-tag { 
  font-size: var(--text-xs); 
  letter-spacing: 0.12em; 
  text-transform: uppercase; 
  color: var(--color-accent); 
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.hero-title { 
  font-family: var(--font-display); 
  font-size: var(--text-2xl); 
  line-height: 1.05; 
  font-weight: 400;
}
.hero-title span.highlight { 
  color: var(--color-primary); 
  font-style: italic;
}
.hero-subtitle { 
  margin-top: var(--space-4); 
  color: var(--color-text-muted); 
  max-width: 42rem;
  font-size: var(--text-lg);
}

.hero-badges { 
  display: flex; 
  flex-wrap: wrap; 
  gap: var(--space-2); 
  margin-top: var(--space-5); 
}
.hero-badge { 
  display: inline-flex; 
  align-items: center; 
  gap: var(--space-2); 
  background: var(--color-surface); 
  border-radius: var(--radius-full); 
  padding: 0.4rem var(--space-4); 
  font-size: var(--text-xs);
  font-weight: 500;
  border: 1px solid var(--color-border); 
  box-shadow: var(--shadow-sm);
}

.hero-cta { 
  margin-top: var(--space-8); 
  display: flex; 
  flex-wrap: wrap; 
  gap: var(--space-3); 
}

.btn-primary-soft {
  background: var(--color-primary);
  color: #ffffff !important;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-full);
  padding: 0.6rem var(--space-6);
  font-weight: 500;
  box-shadow: 0 4px 14px rgba(0, 90, 96, 0.2);
  transition: all var(--transition-smooth);
}
.btn-primary-soft:hover { 
  background: var(--color-primary-hover); 
  border-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 90, 96, 0.3);
}

.btn-outline-light-custom {
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  padding: 0.6rem var(--space-6);
  font-weight: 500;
  transition: all var(--transition-smooth);
}
.btn-outline-light-custom:hover {
  background: var(--color-surface-offset);
  transform: translateY(-2px);
}

.hero-meta { 
  margin-top: var(--space-6); 
  display: flex; 
  flex-wrap: wrap; 
  gap: var(--space-5); 
  font-size: var(--text-sm); 
  color: var(--color-text-muted); 
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}

/* ==========================================================================
   Premium Structural Layout Cards
   ========================================================================== */
.hero-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.hero-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at top right, rgba(0, 90, 96, 0.05), transparent 60%);
  pointer-events: none;
}

.hero-card-tag {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.hero-campus-label {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
.metric-item {
  background: var(--color-surface-2);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-center: center;
}
.metric-label { 
  font-size: var(--text-xs); 
  text-transform: uppercase; 
  color: var(--color-text-faint); 
  letter-spacing: 0.05em;
  font-weight: 600;
}
.metric-value { 
  font-family: var(--font-display); 
  font-size: var(--text-xl); 
  color: var(--color-primary);
  line-height: 1.2;
  margin-block: var(--space-1);
}
.stat-pill { 
  font-size: 10px; 
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  display: inline-block;
}

/* ==========================================================================
   Section Architectural Layouts
   ========================================================================== */
.section-padding { padding-block: clamp(var(--space-12), 8vw, var(--space-20)); }
.section-heading { 
  font-family: var(--font-display); 
  font-size: var(--text-xl); 
  margin-bottom: var(--space-3);
  line-height: 1.15;
}
.section-subtitle { 
  color: var(--color-text-muted); 
  max-width: 42rem;
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.surface-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}
.surface-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.tag-pill { 
  font-size: var(--text-xs); 
  text-transform: uppercase; 
  letter-spacing: 0.1em; 
  border-radius: var(--radius-full); 
  padding: 0.35rem var(--space-4); 
  background: var(--color-primary-soft); 
  color: var(--color-primary); 
  display: inline-flex; 
  align-items: center; 
  gap: var(--space-2); 
  font-weight: 600;
}

.accent-pill {
  background: #fdf5e6;
  color: var(--color-accent);
}
[data-theme="dark"] .accent-pill {
  background: #2a2215;
  color: var(--color-accent);
}

.feature-icon-circle { 
  width: 44px; height: 44px; 
  border-radius: 50%; 
  display: flex; align-items: center; justify-content: center; 
  background: var(--color-primary-soft); 
  color: var(--color-primary); 
  font-size: 1.15rem;
  flex-shrink: 0;
}

/* ==========================================================================
   Timeline Infrastructure Layout
   ========================================================================== */
.timeline-dot { 
  width: 12px; height: 12px; 
  border-radius: 50%; 
  background: var(--color-primary); 
  border: 3px solid var(--color-surface);
  box-shadow: 0 0 0 2px var(--color-primary);
  z-index: 2;
}
.timeline-line { 
  border-left: 2px solid var(--color-border); 
  height: 100%; 
  position: absolute;
  top: 12px;
  z-index: 1;
}

/* ==========================================================================
   Advanced Tab System Mechanics
   ========================================================================== */
.custom-tabs {
  background: var(--color-surface-offset);
  padding: var(--space-2);
  border-radius: var(--radius-full);
}
.custom-tabs .nav-link {
  border: none !important;
  border-radius: var(--radius-full) !important;
  color: var(--color-text-muted) !important;
  font-weight: 500;
  padding: 0.5rem var(--space-5) !important;
}
.custom-tabs .nav-link.active {
  background-color: var(--color-primary) !important;
  color: #ffffff !important;
  box-shadow: var(--shadow-sm);
}

.modern-bullet-list li, .modern-icon-list li {
  position: relative;
  padding-left: var(--space-1);
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
}
.modern-icon-list li i {
  margin-right: var(--space-2);
  font-size: 1.05rem;
}

.point-list li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}
.text-accent-dot {
  font-size: 6px;
  margin-top: 6px;
  color: var(--color-accent);
}

/* ==========================================================================
   Ordered Process Step Components
   ========================================================================== */
.modern-ordered-list {
  list-style: none;
  counter-reset: step-counter;
}
.step-item {
  position: relative;
  padding-left: var(--space-12);
  margin-bottom: var(--space-4);
}
.step-item::before {
  counter-increment: step-counter;
  content: counter(step-counter);
  position: absolute;
  left: 0; top: 0;
  width: 32px; height: 32px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
}

/* ==========================================================================
   Interactive Forms Architecture
   ========================================================================== */
.micro-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}
.elegant-input {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  padding: 0.55rem var(--space-3);
  font-size: var(--text-sm);
  transition: all var(--transition-smooth);
}
.elegant-input:focus {
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 90, 96, 0.15);
  color: var(--color-text);
}

.badge-soft {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  padding: 0.2rem var(--space-3);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
}

.faculty-role {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  font-weight: 600;
}

/* ==========================================================================
   Premium Complex Typography & Link Elements
   ========================================================================== */
.quote-text {
  font-family: var(--font-body);
  font-style: italic;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-muted);
}

.complex-arrow-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.complex-arrow-link .transition-icon {
  transition: transform var(--transition-smooth);
}
.complex-arrow-link:hover .transition-icon {
  transform: translateX(4px);
}

/* ==========================================================================
   Accordion Re-Skin System
   ========================================================================== */
.custom-accordion .accordion-item {
  border: 1px solid var(--color-border) !important;
  background: var(--color-surface);
  margin-bottom: var(--space-2);
}
.custom-accordion .accordion-button {
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--text-sm);
  border: none;
  box-shadow: none !important;
}
.custom-accordion .accordion-button:not(.collapsed) {
  background: var(--color-surface-2);
  color: var(--color-primary);
}

/* ==========================================================================
   Newsletter Layout Cards
   ========================================================================== */
.newsletter-card {
  background: linear-gradient(135deg, #00494e, #002d30);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: none;
}
[data-theme="dark"] .newsletter-card {
  background: linear-gradient(135deg, #162a2c, #0b1516);
  border: 1px solid var(--color-border);
}
.dark-theme-input {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
}
.dark-theme-input:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: #4dbbc7;
}
.newsletter-btn {
  background: #ffffff;
  color: #00494e !important;
  border: none;
}
.newsletter-btn:hover {
  background: var(--color-surface-offset);
}

/* ==========================================================================
   Footer Aesthetics Grid
   ========================================================================== */
.site-footer {
  background: #0d100b;
  color: #d1d5db;
  padding-block: var(--space-16) var(--space-10);
  margin-top: var(--space-24);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-logo {
  background: #ffffff !important;
}
.footer-logo .logo-letter {
  color: #00494e;
}
.footer-links-list li {
  margin-bottom: var(--space-2);
}
.footer-links-list a {
  color: #9ca3af;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: transform var(--transition-smooth), color var(--transition-smooth);
}
.footer-links-list a:hover {
  color: #ffffff;
  transform: translateX(4px);
}
.footer-arrow {
  font-size: 10px;
  color: var(--color-primary);
}

.social-icon-link {
  width: 36px; height: 36px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all var(--transition-smooth);
}
.social-icon-link:hover {
  background: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Responsive Structural Refinements */
@media (max-width: 991.98px) {
  .hero-card { margin-top: var(--space-6); }
  .custom-tabs { border-radius: var(--radius-md); }
  .custom-tabs .nav-link { border-radius: var(--radius-md) !important; text-align: center; }
}