/* Premium Ultra-Luxurious iOS 18 Glassmorphism & Animated Design System */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* iOS 18 Luxury Color Palette */
  --ios-blue: #007AFF;
  --ios-blue-glow: rgba(0, 122, 255, 0.35);
  --ios-indigo: #5856D6;
  --ios-purple: #AF52DE;
  --ios-pink: #FF2D55;
  --ios-orange: #FF9500;
  --ios-teal: #30B0C7;
  --ios-emerald: #34C759;
  
  /* Canvas & Glass System */
  --bg-dark-canvas: #090d16;
  --bg-dark-card: rgba(22, 28, 45, 0.65);
  --bg-dark-card-hover: rgba(30, 40, 65, 0.85);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-hover: rgba(0, 122, 255, 0.4);
  --glass-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.5), 0 10px 20px -5px rgba(0, 0, 0, 0.3);
  
  /* Light Card Variant (For Light Elements) */
  --bg-light-glass: rgba(255, 255, 255, 0.85);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --radius-ios-sm: 14px;
  --radius-ios-md: 20px;
  --radius-ios-lg: 28px;
  --radius-ios-xl: 36px;
  
  --spring-transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --bounce-transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Global Reset & Body Background with Animated Mesh Orbs */
body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-dark-canvas);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background Ambient Glow Orbs */
body::before {
  content: '';
  position: fixed;
  top: -10%;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 122, 255, 0.22) 0%, rgba(88, 86, 214, 0.12) 40%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
  animation: orbFloat1 18s ease-in-out infinite alternate;
}

body::after {
  content: '';
  position: fixed;
  bottom: 10%;
  right: 10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(255, 149, 0, 0.15) 0%, rgba(255, 45, 85, 0.08) 50%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
  animation: orbFloat2 22s ease-in-out infinite alternate-reverse;
}

@keyframes orbFloat1 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.15); }
  100% { transform: translate(-30px, 80px) scale(0.95); }
}

@keyframes orbFloat2 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-80px, -50px) scale(1.2); }
  100% { transform: translate(40px, -30px) scale(1); }
}

main {
  flex: 1;
  position: relative;
  z-index: 1;
}

/* Headings Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', 'Plus Jakarta Sans', sans-serif;
  letter-spacing: -0.025em;
  color: #ffffff;
}

/* Floating Glass Navbar (iOS 18 Island Style) */
.navbar-alumni {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(25px) saturate(200%);
  -webkit-backdrop-filter: blur(25px) saturate(200%);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.75rem 1.5rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--spring-transition);
}

.navbar-alumni .navbar-brand {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  transition: var(--bounce-transition);
}

.navbar-alumni .navbar-brand:hover {
  transform: scale(1.03);
}

.navbar-alumni .navbar-brand span {
  background: linear-gradient(135deg, #FFD60A 0%, #FF9500 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* iOS Segmented Navigation Capsule Container */
.ios-segmented-nav {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 5px;
  border-radius: 35px;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.navbar-alumni .nav-link {
  color: rgba(248, 250, 252, 0.8);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.5rem 1.15rem;
  border-radius: 25px;
  transition: var(--spring-transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.navbar-alumni .nav-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.navbar-alumni .nav-link.active {
  color: #ffffff !important;
  background: linear-gradient(135deg, #007AFF 0%, #0056B3 100%) !important;
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.45);
}

/* Consistent Action Pill Buttons */
.btn-ios-admin {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #FBBF24;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.45rem 1.1rem;
  border-radius: 30px;
  backdrop-filter: blur(10px);
  transition: var(--bounce-transition);
}

.btn-ios-admin:hover {
  background: rgba(245, 158, 11, 0.3);
  color: #ffffff;
  border-color: rgba(245, 158, 11, 0.7);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-ios-profile {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 0.35rem 1rem 0.35rem 0.4rem;
  border-radius: 30px;
  backdrop-filter: blur(10px);
  transition: var(--bounce-transition);
}

.btn-ios-profile:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.15);
}

/* Mobile Collapsed Action Sheet Styling */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-ios-lg);
    padding: 1.25rem;
    margin-top: 1rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  }

  .ios-segmented-nav {
    background: transparent;
    border: none;
    padding: 0;
    box-shadow: none;
  }

  .navbar-alumni .nav-link {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-ios-sm);
    margin-bottom: 0.3rem;
  }
}

/* iOS Glass Hero Banner */
.hero-banner {
  background: transparent;
  color: #ffffff;
  padding: 4.5rem 0 5.5rem;
  position: relative;
}

.hero-stats-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(25px) saturate(190%);
  -webkit-backdrop-filter: blur(25px) saturate(190%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-ios-lg);
  padding: 1.8rem 1.2rem;
  text-align: center;
  color: #ffffff;
  box-shadow: var(--glass-shadow);
  transition: var(--bounce-transition);
}

.hero-stats-card:hover {
  transform: translateY(-8px) scale(1.04);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 122, 255, 0.5);
  box-shadow: 0 20px 40px rgba(0, 122, 255, 0.3);
}

.hero-stats-card .stat-number {
  font-family: 'Outfit', sans-serif;
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #60A5FA 0%, #3B82F6 50%, #F59E0B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* iOS Cards (Glass Cards) */
.card-alumni {
  background: var(--bg-dark-card);
  backdrop-filter: blur(30px) saturate(200%);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-ios-lg);
  box-shadow: var(--glass-shadow);
  transition: var(--spring-transition);
  overflow: hidden;
}

.card-alumni:hover {
  transform: translateY(-8px) scale(1.02);
  background: var(--bg-dark-card-hover);
  border-color: var(--glass-border-hover);
  box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.6), 0 0 30px var(--ios-blue-glow);
}

/* Avatars */
.avatar-lg {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  transition: var(--bounce-transition);
}

.avatar-lg:hover {
  transform: scale(1.08) rotate(3deg);
  border-color: var(--ios-blue);
}

.avatar-md {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.avatar-sm {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.6);
}

/* Pill Badges */
.badge-angkatan {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.25) 0%, rgba(88, 86, 214, 0.25) 100%);
  color: #60A5FA;
  border: 1px solid rgba(96, 165, 250, 0.3);
  font-weight: 700;
  padding: 0.45rem 0.95rem;
  border-radius: 30px;
  font-size: 0.8rem;
  letter-spacing: -0.01em;
}

.badge-jurusan {
  background: linear-gradient(135deg, rgba(255, 149, 0, 0.25) 0%, rgba(255, 45, 85, 0.2) 100%);
  color: #FBBF24;
  border: 1px solid rgba(251, 191, 36, 0.3);
  font-weight: 700;
  padding: 0.45rem 0.95rem;
  border-radius: 30px;
  font-size: 0.8rem;
}

/* Post Card Feed */
.post-card {
  border-radius: var(--radius-ios-lg);
  background: var(--bg-dark-card);
  backdrop-filter: blur(30px) saturate(200%);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  margin-bottom: 1.8rem;
  overflow: hidden;
  transition: var(--spring-transition);
}

.post-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 25px 50px -10px rgba(0, 0, 0, 0.5);
}

.post-header {
  padding: 1.4rem 1.4rem 0.6rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.post-body {
  padding: 0.85rem 1.4rem 1.4rem;
  font-size: 1.02rem;
  color: #e2e8f0;
  white-space: pre-line;
}

.post-image {
  width: 100%;
  max-height: 440px;
  object-fit: cover;
}

.post-actions {
  padding: 0.9rem 1.4rem;
  border-top: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(15, 23, 42, 0.5);
}

.btn-action {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.92rem;
  border: none;
  background: none;
  padding: 0.5rem 1rem;
  border-radius: 12px;
  transition: var(--bounce-transition);
}

.btn-action:hover {
  transform: scale(1.06);
  color: #60A5FA;
  background: rgba(0, 122, 255, 0.15);
}

.btn-action.liked {
  color: #F43F5E;
  background: rgba(244, 63, 94, 0.15);
  animation: pulseLike 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.comment-item {
  padding: 0.9rem 1.2rem;
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(10px);
  border-radius: 18px;
  margin-bottom: 0.65rem;
  font-size: 0.94rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #cbd5e1;
}

/* Event & Gallery Images */
.event-card-img {
  height: 230px;
  object-fit: cover;
  width: 100%;
  transition: var(--spring-transition);
}

.gallery-grid-img {
  height: 240px;
  object-fit: cover;
  width: 100%;
  border-radius: var(--radius-ios-md);
  cursor: pointer;
  transition: var(--bounce-transition);
}

.gallery-grid-img:hover {
  transform: scale(1.05);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* iOS Lightbox Modal */
.lightbox-modal .modal-content {
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(35px);
  -webkit-backdrop-filter: blur(35px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-ios-xl);
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.7);
}

.lightbox-modal img {
  max-height: 75vh;
  object-fit: contain;
}

/* iOS Gradient Buttons */
.btn-primary {
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  border: none;
  border-radius: 16px;
  padding: 0.7rem 1.5rem;
  font-weight: 700;
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
  transition: var(--bounce-transition);
}

.btn-primary:hover, .btn-primary:focus {
  background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(59, 130, 246, 0.5);
}

.btn-primary:active {
  transform: scale(0.96);
}

.btn-warning {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  border: none;
  color: #ffffff;
  border-radius: 16px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
  transition: var(--bounce-transition);
}

.btn-warning:hover {
  background: linear-gradient(135deg, #FBBF24 0%, #D97706 100%);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(245, 158, 11, 0.5);
}

.btn-warning:active {
  transform: scale(0.96);
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.3);
  color: #ffffff;
  border-radius: 16px;
  backdrop-filter: blur(10px);
  transition: var(--bounce-transition);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #ffffff;
  transform: translateY(-2px);
}

/* iOS Form Inputs */
.form-control, .form-select {
  border-radius: 16px;
  padding: 0.8rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(30, 41, 59, 0.6);
  backdrop-filter: blur(15px);
  color: #ffffff;
  font-size: 0.96rem;
  transition: var(--spring-transition);
}

.form-control::placeholder {
  color: #64748b;
}

.form-control:focus, .form-select:focus {
  background: rgba(30, 41, 59, 0.9);
  border-color: #3B82F6;
  color: #ffffff;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.25);
  transform: translateY(-1px);
}

.input-group-text {
  border-radius: 16px 0 0 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(30, 41, 59, 0.8);
  color: #94a3b8;
}

/* Footer (Dark Luxury Glass) */
footer {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(30px) saturate(200%);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  color: #94a3b8;
  padding: 4.5rem 0 2rem;
  font-size: 0.94rem;
  margin-top: 5rem;
  border-top: 1px solid var(--glass-border);
}

footer a {
  color: #cbd5e1;
  text-decoration: none;
  transition: var(--spring-transition);
}

footer a:hover {
  color: #3B82F6;
  transform: translateX(4px);
}

/* Text overrides for readability in dark glass mode */
.text-dark {
  color: #f8fafc !important;
}

.text-muted {
  color: #94a3b8 !important;
}

.bg-white {
  background: rgba(15, 23, 42, 0.6) !important;
  backdrop-filter: blur(20px);
}

.bg-light {
  background: rgba(30, 41, 59, 0.6) !important;
  backdrop-filter: blur(15px);
}

.table {
  color: #e2e8f0 !important;
}

.table th, .table td {
  border-color: rgba(255, 255, 255, 0.08) !important;
}

.table-light {
  background: rgba(30, 41, 59, 0.9) !important;
  color: #ffffff !important;
}

.table-hover tbody tr:hover {
  background: rgba(255, 255, 255, 0.08) !important;
  color: #ffffff !important;
}

.dropdown-menu {
  background: rgba(15, 23, 42, 0.92) !important;
  backdrop-filter: blur(25px) !important;
  border: 1px solid rgba(255, 255, 255, 0.15) !important;
  color: #ffffff !important;
}

.dropdown-item {
  color: #cbd5e1 !important;
  transition: var(--spring-transition);
}

.dropdown-item:hover {
  background: rgba(0, 122, 255, 0.25) !important;
  color: #ffffff !important;
}

.modal-content {
  background: rgba(15, 23, 42, 0.94) !important;
  backdrop-filter: blur(30px) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  color: #ffffff !important;
}

.modal-header, .modal-footer {
  border-color: rgba(255, 255, 255, 0.1) !important;
}