/* ============================================
   KURBAN INTELLIGENCE LAB - Design System
   Qatar-based AI & Software Company
   ============================================ */

/* --- CSS RESET & VARIABLES --- */
:root {
  --bg-primary: #0a0a0a;
  --bg-surface: #111111;
  --bg-surface-elevated: #1a1a1a;
  --bg-surface-hover: #222222;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --accent: #ae3040;
  --accent-light: #d4465a;
  --accent-dark: #8a2533;
  --accent-glow: rgba(174, 48, 64, 0.25);
  --gradient-accent: linear-gradient(135deg, #ae3040, #d4465a);
  --gradient-hero: linear-gradient(135deg, #0a0a0a 0%, #1a0a0e 50%, #0a0a0a 100%);
  --border-color: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(174, 48, 64, 0.3);
  --glass-bg: rgba(17, 17, 17, 0.8);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--accent-glow);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Manrope', 'Inter', sans-serif;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --container-max: 1200px;
  --container-wide: 1400px;
  --navbar-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h5 { font-size: 1.125rem; }

p { color: var(--text-secondary); line-height: 1.8; }

.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-accent { color: var(--accent-light); }

/* --- UTILITY --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-sm { padding: 60px 0; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 16px;
  padding: 6px 16px;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  background: rgba(174, 48, 64, 0.08);
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(174, 48, 64, 0.4);
}

.btn-outline {
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(174, 48, 64, 0.1);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.85rem;
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  transition: all var(--transition-normal);
}

.btn-icon:hover {
  border-color: var(--accent);
  background: rgba(174, 48, 64, 0.15);
  transform: scale(1.05);
}

/* --- NAVBAR --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  z-index: 1000;
  transition: all var(--transition-normal);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-wide);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  z-index: 1001;
}

.nav-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  margin-left: 16px;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 28px;
  z-index: 1001;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

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

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

.logo-icon-img {
  width: 240px;
  height: 40px;
  object-fit: contain;
}

/* --- HERO --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--navbar-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(174, 48, 64, 0.12) 0%, transparent 50%),
              radial-gradient(circle at 70% 60%, rgba(174, 48, 64, 0.08) 0%, transparent 50%);
  animation: heroFloat 20s ease-in-out infinite;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

@keyframes heroFloat {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(2%, -2%) rotate(1deg); }
  50% { transform: translate(-1%, 3%) rotate(-0.5deg); }
  75% { transform: translate(1.5%, -1%) rotate(0.5deg); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(174, 48, 64, 0.1);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  margin-bottom: 24px;
}

.hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin-bottom: 40px;
}

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

.hero-visual {
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
  opacity: 0.15;
  z-index: 0;
}

.hero-visual .orb {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border-accent);
  animation: orbRotate 30s linear infinite;
}

.hero-visual .orb:nth-child(1) {
  width: 100%;
  height: 100%;
}

.hero-visual .orb:nth-child(2) {
  width: 75%;
  height: 75%;
  top: 12.5%;
  left: 12.5%;
  animation-duration: 25s;
  animation-direction: reverse;
}

.hero-visual .orb:nth-child(3) {
  width: 50%;
  height: 50%;
  top: 25%;
  left: 25%;
  animation-duration: 20s;
}

@keyframes orbRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* --- PAGE HERO (inner pages) --- */
.page-hero {
  padding: 160px 0 80px;
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.page-hero .breadcrumb a:hover { color: var(--accent-light); }

.page-hero .breadcrumb .sep { opacity: 0.4; }

.page-hero h1 { margin-bottom: 16px; }

.page-hero p {
  font-size: 1.15rem;
  max-width: 600px;
}

/* --- STATS BAR --- */
.stats-bar {
  padding: 48px 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item .stat-number {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- CARDS --- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 0 40px rgba(174, 48, 64, 0.08);
}

.card:hover::before { opacity: 1; }

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(174, 48, 64, 0.1);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.card h3 { margin-bottom: 12px; font-size: 1.25rem; }
.card h4 { margin-bottom: 8px; }
.card p { font-size: 0.95rem; }

/* Product Card */
.product-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.product-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.product-card .product-image {
  height: 220px;
  background: linear-gradient(135deg, var(--bg-surface-elevated), var(--bg-surface));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card .product-image .product-icon {
  font-size: 4rem;
  opacity: 0.6;
}

.product-card .product-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, var(--bg-surface));
}

.product-card .product-body {
  padding: 28px;
}

.product-card .product-tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 100px;
  background: rgba(174, 48, 64, 0.12);
  color: var(--accent-light);
  border: 1px solid rgba(174, 48, 64, 0.2);
  margin-bottom: 12px;
}

.product-card .product-body h3 {
  margin-bottom: 12px;
  font-size: 1.3rem;
}

.product-card .product-body p {
  font-size: 0.9rem;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card .product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.product-card .product-features span {
  padding: 4px 10px;
  font-size: 0.75rem;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

/* Publication Card */
.pub-card {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.pub-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-surface-elevated);
}

.pub-card .pub-number {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  min-width: 32px;
  opacity: 0.5;
}

.pub-card .pub-content { flex: 1; }

.pub-card .pub-venue {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.pub-card h4 {
  font-size: 1rem;
  margin-bottom: 6px;
  line-height: 1.4;
}

.pub-card .pub-authors {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Team Card */
.team-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

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

.team-card .team-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bg-surface-elevated), var(--accent-dark));
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-light);
  border: 2px solid var(--border-accent);
  overflow: hidden;
}

.team-card .team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card h4 { margin-bottom: 4px; font-size: 1.1rem; }

.team-card .team-role {
  font-size: 0.85rem;
  color: var(--accent-light);
  font-weight: 500;
  margin-bottom: 4px;
}

.team-card .team-org {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.team-card .team-bio {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Director Card (large) */
.director-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 48px;
  padding: 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.director-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
}

.director-card .director-avatar {
  width: 180px;
  height: 180px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--bg-surface-elevated), var(--accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  font-weight: 700;
  color: var(--accent-light);
  border: 2px solid var(--border-accent);
  overflow: hidden;
}

.director-card .director-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.director-card .director-info h3 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.director-card .director-role {
  font-size: 1rem;
  color: var(--accent-light);
  font-weight: 600;
  margin-bottom: 16px;
}

.director-card .director-bio {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

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

/* --- RESEARCH AREAS --- */
.research-areas {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.research-area-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
}

.research-area-card .area-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: var(--radius-md);
  background: rgba(174, 48, 64, 0.1);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.research-area-card h4 { margin-bottom: 8px; }

/* --- TIMELINE --- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, var(--accent), var(--border-color));
}

.timeline-item {
  display: flex;
  margin-bottom: 48px;
  position: relative;
}

.timeline-item:nth-child(odd) { padding-right: calc(50% + 32px); text-align: right; }
.timeline-item:nth-child(even) { padding-left: calc(50% + 32px); }

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-primary);
  z-index: 1;
}

.timeline-content {
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.timeline-year {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

/* --- CTA SECTION --- */
.cta-section {
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(174, 48, 64, 0.15) 0%, transparent 70%);
}

.cta-section .container { position: relative; z-index: 1; }

.cta-section h2 { margin-bottom: 16px; }

.cta-section p {
  max-width: 500px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
}

/* --- FORMS --- */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-control::placeholder {
  color: var(--text-muted);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

/* --- CONTACT INFO --- */
.contact-info-card {
  padding: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

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

.contact-item .contact-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: var(--radius-sm);
  background: rgba(174, 48, 64, 0.1);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-item h5 {
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.contact-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- PERKS GRID --- */
.perks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.perk-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.perk-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.perk-card h4 { margin-bottom: 8px; }

/* --- FOOTER --- */
.footer {
  padding: 80px 0 32px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 300px;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  border-color: var(--accent);
  background: rgba(174, 48, 64, 0.15);
}

.footer-col h5 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 6px 0;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- ANIMATIONS --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* --- SECTION DIVIDER --- */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

/* --- VALUES / CORE VALUES --- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 40px 24px;
}

.value-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: rgba(174, 48, 64, 0.08);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.value-card h4 { margin-bottom: 8px; }

/* --- TWO COLUMN LAYOUT --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

/* --- SCROLLBAR --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--bg-surface-elevated); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

@media (max-width: 1200px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .footer-grid .footer-col:last-child { display: none; }
}

@media (max-width: 992px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    justify-content: center;
    align-items: center;
    gap: 8px;
    z-index: 1000;
  }

  .nav-links.active a {
    font-size: 1.3rem;
    padding: 12px 32px;
  }

  .hero-content { max-width: 100%; }
  .hero-visual { display: none; }

  .grid-3, .services-grid, .research-areas, .perks-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4, .values-grid { grid-template-columns: repeat(2, 1fr); }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .two-col { grid-template-columns: 1fr; }

  .director-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .director-card .director-avatar { margin: 0 auto; }

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

  .timeline::before { left: 0; }
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    padding-left: 40px;
    padding-right: 0;
    text-align: left;
  }
  .timeline-dot { left: 0; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .page-hero { padding: 120px 0 60px; }

  .grid-2, .grid-3, .services-grid, .research-areas, .perks-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item .stat-number { font-size: 2.2rem; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .section-header { margin-bottom: 40px; }
}

@media (max-width: 480px) {
  html { font-size: 15px; }
  .container { padding: 0 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .card { padding: 24px; }
  .btn { padding: 12px 24px; font-size: 0.9rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .values-grid { grid-template-columns: 1fr; }
}