/*
 * NIT MIN SUPER APP - Master Design System
 * Palette: Royal Navy Blue, Crisp White, Imperial Gold
 * Support: Light Mode & Dark Mode, Responsive Mobile PWA UX
 */

:root {
  /* Brand Palette */
  --nit-navy-dark: #001B3A;
  --nit-blue-primary: #0A3663;
  --nit-blue-vibrant: #1E56A0;
  --nit-blue-light: #EBF3FC;
  --nit-gold: #D4AF37;
  --nit-gold-light: #FDF3D6;
  --nit-gold-dark: #A67C00;
  --nit-white: #FFFFFF;
  
  /* Neutral System */
  --bg-page: #F4F7FB;
  --bg-surface: #FFFFFF;
  --bg-card: #FFFFFF;
  --border-color: #E2E8F0;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  
  /* Shadows & Glass */
  --shadow-sm: 0 2px 4px rgba(10, 54, 99, 0.05);
  --shadow-md: 0 4px 14px rgba(10, 54, 99, 0.08);
  --shadow-lg: 0 10px 25px rgba(10, 54, 99, 0.12);
  --shadow-gold: 0 4px 15px rgba(212, 175, 55, 0.25);
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Sidebar & Header */
  --sidebar-width: 270px;
  --header-height: 72px;
  --bottom-nav-height: 64px;
}

/* Dark Mode Variables (Linear / GitHub / Stripe SaaS Inspired) */
[data-theme="dark"] {
  --nit-navy-dark: #0B1220;
  --nit-blue-primary: #162033;
  --nit-blue-vibrant: #3B82F6;
  --nit-blue-light: #1C2940;
  --nit-gold: #D4AF37;
  --nit-gold-light: #2A2412;
  --nit-gold-dark: #F3CA65;

  --bg-page: #0B1220;
  --bg-surface: #162033;
  --bg-card: #162033;
  --bg-card-secondary: #1C2940;
  --border-color: #2A3A56;
  --text-main: #FFFFFF;
  --text-secondary: #C9D4E5;
  --text-muted: #9BA8BD;
  --text-light: #9BA8BD;

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.6);
}

/* Base resets & typography */
body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  min-height: 100vh;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, .brand-text-title, .nit-card-title, .menu-card-title, .stat-value {
  font-family: 'Outfit', 'Plus Jakarta Sans', sans-serif;
  letter-spacing: -0.02em;
}

a {
  text-decoration: none;
  color: var(--nit-blue-vibrant);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--nit-gold-dark);
}

/* Top Navigation Bar */
.nit-topbar {
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1020;
  box-shadow: 0 2px 10px rgba(10, 54, 99, 0.04);
  transition: background var(--transition-smooth);
}

[data-theme="dark"] .nit-topbar {
  background: rgba(17, 28, 46, 0.92);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 8px;
  background: #ffffff;
  padding: 2px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.brand-text-title {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, var(--nit-blue-primary) 0%, var(--nit-blue-vibrant) 70%, var(--nit-gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.brand-text-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* Coin Badge Animation */
.coin-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #FFF6D6 0%, #FFE68C 100%);
  border: 1px solid var(--nit-gold);
  color: #7A5800;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 6px 14px;
  border-radius: 50px;
  box-shadow: 0 2px 8px rgba(212, 175, 55, 0.2);
  transition: transform var(--transition-fast);
}

[data-theme="dark"] .coin-badge {
  background: linear-gradient(135deg, #2D2510 0%, #443715 100%);
  color: #FFDF73;
}

.coin-badge:hover {
  transform: translateY(-2px) scale(1.03);
}

.coin-icon {
  font-size: 1.1rem;
  color: #D4AF37;
  animation: pulse-coin 2.5s infinite;
}

@keyframes pulse-coin {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

/* User profile avatar */
.user-avatar-sm {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--nit-gold);
}

.user-avatar-md {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--nit-gold);
}

.user-avatar-lg {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--nit-gold);
  box-shadow: var(--shadow-gold);
}

/* App Layout: Sidebar + Main Content */
.app-wrapper {
  display: flex;
  min-height: calc(100vh - var(--header-height));
}

.nit-sidebar {
  width: var(--sidebar-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
}

.nit-main-content {
  flex-grow: 1;
  padding: 24px;
  max-width: 100%;
  margin-bottom: calc(var(--bottom-nav-height) + 10px);
}

@media (min-width: 992px) {
  .nit-main-content {
    margin-bottom: 0;
  }
}

/* Sidebar navigation links */
.sidebar-nav {
  padding: 16px 12px;
  list-style: none;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-heading {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.75px;
  color: var(--text-light);
  padding: 12px 14px 4px;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 16px;
  border-radius: 12px;
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}

.sidebar-nav-item i {
  font-size: 1.25rem;
  color: var(--nit-blue-vibrant);
  transition: all var(--transition-fast);
}

.sidebar-nav-item:hover {
  background: var(--nit-blue-light);
  color: var(--nit-blue-vibrant);
  transform: translateX(4px);
}

.sidebar-nav-item.active {
  background: linear-gradient(135deg, var(--nit-blue-primary) 0%, var(--nit-blue-vibrant) 100%);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(10, 54, 99, 0.25);
}

.sidebar-nav-item.active i {
  color: var(--nit-gold);
}

/* Role Badges */
.badge-role {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.badge-role-Owner {
  background: linear-gradient(135deg, #1E1B18 0%, #433919 100%);
  color: #F8DA74;
  border: 1px solid var(--nit-gold);
}

.badge-role-Teacher {
  background: #E8F4FD;
  color: #0D6EFD;
  border: 1px solid #B6D4FE;
}

.badge-role-Leader {
  background: #FFF3CD;
  color: #997404;
  border: 1px solid #FFE69C;
}

.badge-role-CR {
  background: #D1E7DD;
  color: #0F5132;
  border: 1px solid #A3CFBB;
}

.badge-role-Student {
  background: #E2E3E5;
  color: #41464B;
  border: 1px solid #C4C8CB;
}

/* Dark Mode Badges */
[data-theme="dark"] .badge-role-Teacher {
  background: #0C284D;
  color: #70B5FF;
  border-color: #174279;
}
[data-theme="dark"] .badge-role-Leader {
  background: #3B2E05;
  color: #F5D36D;
  border-color: #614C08;
}
[data-theme="dark"] .badge-role-CR {
  background: #0E3524;
  color: #72E5A8;
  border-color: #16563A;
}
[data-theme="dark"] .badge-role-Student {
  background: #242A38;
  color: #C0C8D6;
  border-color: #384257;
}

/* Custom Cards */
.nit-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  overflow: hidden;
}

.nit-card:hover {
  box-shadow: var(--shadow-md);
}

.nit-card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nit-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nit-card-body {
  padding: 20px;
}

/* Menu Grid Cards (Home Dashboard) */
.menu-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.menu-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--nit-blue-vibrant), var(--nit-gold));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.menu-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--nit-blue-vibrant);
}

.menu-card:hover::after {
  opacity: 1;
}

.menu-card-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.85rem;
  transition: transform var(--transition-fast);
}

.menu-card:hover .menu-card-icon {
  transform: scale(1.12) rotate(3deg);
}

.menu-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.menu-card-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.4;
}

/* Ad Banner Carousel */
.hero-ad-banner {
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(255, 255, 255, 0.16);
  position: relative;
  background: #0a3663;
}

.hero-ad-item {
  height: 276px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(120deg, #001b3a 0%, #0a3663 54%, #1e56a0 100%);
}

.hero-ad-media,
.hero-ad-image,
.hero-ad-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-ad-media {
  overflow: hidden;
}

.hero-ad-image,
.hero-ad-video {
  object-fit: cover;
  object-position: center;
}

.hero-ad-image {
  opacity: 0.58;
}

.hero-ad-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 20, 47, 0.94) 0%, rgba(0, 36, 76, 0.82) 52%, rgba(0, 41, 85, 0.45) 100%);
}

.hero-ad-layout {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  height: 100%;
  padding: 30px 44px 50px;
}

.hero-ad-content {
  position: relative;
  color: #ffffff;
  min-width: 0;
  max-width: 680px;
}

.hero-ad-content h3 {
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  line-height: 1.2;
}

.hero-ad-content p {
  max-width: 620px;
}

.hero-ad-actions {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  min-width: 190px;
}

#ownerAdCarousel .carousel-indicators {
  z-index: 3;
  margin-bottom: 14px;
}

#ownerAdCarousel .carousel-indicators [data-bs-target] {
  width: 8px;
  height: 8px;
  margin: 0 4px;
  border: 0;
  border-radius: 50%;
  background-color: #fff;
  opacity: 0.55;
  transition: opacity 160ms ease, transform 160ms ease;
}

#ownerAdCarousel .carousel-indicators .active {
  opacity: 1;
  transform: scale(1.25);
}

.hero-ad-badge {
  background: var(--nit-gold);
  color: #000;
  font-weight: 800;
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 50px;
  display: inline-block;
  margin-bottom: 8px;
  text-transform: uppercase;
}

/* Buttons */
.btn-nit-primary {
  background: linear-gradient(135deg, var(--nit-blue-primary) 0%, var(--nit-blue-vibrant) 100%);
  color: #ffffff;
  border: none;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(10, 54, 99, 0.2);
  transition: all var(--transition-fast);
}

.btn-nit-primary:hover {
  background: linear-gradient(135deg, #072545 0%, #154585 100%);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(10, 54, 99, 0.3);
}

.btn-nit-gold {
  background: linear-gradient(135deg, #D4AF37 0%, #E8C14D 100%);
  color: #1A1400;
  border: none;
  font-weight: 700;
  padding: 9px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.25);
  transition: all var(--transition-fast);
}

.btn-nit-gold:hover {
  background: linear-gradient(135deg, #C29F2F 0%, #DCB542 100%);
  color: #000;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(212, 175, 55, 0.4);
}

/* Forms */
.form-label {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-control, .form-select {
  background-color: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  color: var(--text-main);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.94rem;
  transition: all var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  background-color: var(--bg-surface);
  border-color: var(--nit-blue-vibrant);
  box-shadow: 0 0 0 3px rgba(30, 86, 160, 0.15);
  color: var(--text-main);
}

/* Mobile Bottom Navigation (App Feel) */
.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(226, 232, 240, 0.85);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 1030;
  box-shadow: 0 -8px 24px rgba(10, 54, 99, 0.08);
  transition: all var(--transition-smooth);
}

[data-theme="dark"] .mobile-bottom-nav {
  background: rgba(17, 28, 46, 0.9);
  border-top-color: rgba(31, 48, 75, 0.85);
  box-shadow: 0 -8px 28px rgba(0, 0, 0, 0.4);
}

.mobile-nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  gap: 3px;
  padding: 8px 14px;
  border-radius: 14px;
  transition: all var(--transition-fast);
  position: relative;
  text-decoration: none;
}

.mobile-nav-btn:active {
  transform: scale(0.92);
}

.mobile-nav-btn i {
  font-size: 1.35rem;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.mobile-nav-btn.active {
  color: var(--nit-blue-vibrant);
}

[data-theme="dark"] .mobile-nav-btn.active {
  color: var(--nit-gold);
}

.mobile-nav-btn.active i {
  color: var(--nit-gold-dark);
  transform: translateY(-2px);
}

[data-theme="dark"] .mobile-nav-btn.active i {
  color: var(--nit-gold);
}

.mobile-nav-btn.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  width: 18px;
  height: 3px;
  background: linear-gradient(90deg, var(--nit-blue-vibrant), var(--nit-gold));
  border-radius: 6px;
}

@media (min-width: 992px) {
  .mobile-bottom-nav {
    display: none !important;
  }
}

/* Stat Cards */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-4px);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 800;
  margin: 0;
  color: var(--text-main);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
  font-weight: 600;
}

/* Auth Cards (Registration & Login) */
.auth-wrapper {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  position: relative;
}

.auth-wrapper::before {
  content: '';
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(30, 86, 160, 0.12) 0%, rgba(212, 175, 55, 0.05) 50%, transparent 70%);
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.auth-card {
  width: 100%;
  max-width: 520px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 36px 32px;
  box-shadow: 0 14px 40px rgba(10, 54, 99, 0.08);
  position: relative;
  z-index: 1;
  transition: all var(--transition-smooth);
}

.auth-step-pill {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.88rem;
  background: var(--border-color);
  color: var(--text-muted);
}

.auth-step-pill.active {
  background: linear-gradient(135deg, var(--nit-blue-primary), var(--nit-blue-vibrant));
  color: #fff;
  box-shadow: 0 2px 8px rgba(10, 54, 99, 0.3);
}

.auth-step-pill.completed {
  background: var(--nit-gold);
  color: #000;
}

/* Modals */
.modal-content {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 20px;
}

.modal-header, .modal-footer {
  border-color: var(--border-color);
}

/* Enhanced Mobile Responsiveness (Phones & Small Tablets) */
@media (max-width: 767.98px) {
  .nit-main-content {
    padding: 16px 12px;
  }

  .auth-wrapper {
    padding: 16px 12px;
    min-height: calc(100vh - 80px);
  }

  .auth-card {
    padding: 24px 18px;
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(10, 54, 99, 0.06);
  }

  /* Prevent auto-zoom on iOS (minimum 16px) */
  .form-control, .form-select {
    font-size: 16px;
    padding: 11px 14px;
  }

  .btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .table-responsive {
    border-radius: 14px;
    -webkit-overflow-scrolling: touch;
    box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.02);
  }

  .stat-card {
    padding: 14px 12px;
    gap: 12px;
  }

  .stat-icon {
    width: 44px;
    height: 44px;
    font-size: 1.3rem;
  }

  .stat-value {
    font-size: 1.35rem;
  }

  .menu-card {
    padding: 16px 12px;
    border-radius: 16px;
    gap: 10px;
  }

  .menu-card-icon {
    width: 52px;
    height: 52px;
    font-size: 1.5rem;
    border-radius: 14px;
  }

  .menu-card-title {
    font-size: 0.95rem;
  }

  .menu-card-desc {
    font-size: 0.74rem;
  }

  .hero-ad-item {
    height: 250px;
  }

  .hero-ad-layout {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
    padding: 22px 20px 44px;
  }

  .hero-ad-actions {
    flex-direction: row;
    flex-wrap: wrap;
    min-width: 0;
  }

  .hero-ad-actions .btn {
    font-size: 0.75rem;
  }

  #ownerAdCarousel .carousel-indicators {
    margin-bottom: 10px;
  }
}

/* Touch Active Feedback */
button:active, .btn:active, .menu-card:active {
  transform: scale(0.98);
}

/* ==========================================================================
   ENHANCED MODERN SAAS DARK THEME (High Contrast & Premium SaaS Visibility)
   Palette:
   - Background: #0B1220
   - Surface Cards: #162033
   - Secondary Cards: #1C2940
   - Borders: #2A3A56
   - Primary Text: #FFFFFF
   - Secondary Text: #C9D4E5
   - Muted Text: #9BA8BD
   - Gold Accent: #D4AF37
   - Blue Accent: #3B82F6
   ========================================================================== */

/* Dark Mode Global Overrides for Typography & Hierarchy */
[data-theme="dark"] .text-dark,
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
  color: #FFFFFF !important;
}

[data-theme="dark"] .text-secondary {
  color: #C9D4E5 !important;
}

[data-theme="dark"] .text-muted,
[data-theme="dark"] .text-white-50 {
  color: #9BA8BD !important;
}

/* Topbar & Header */
[data-theme="dark"] .nit-topbar {
  background: rgba(22, 32, 51, 0.94);
  border-bottom: 1px solid #2A3A56;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

/* Sidebar & Navigation */
[data-theme="dark"] .nit-sidebar {
  background: #162033;
  border-right: 1px solid #2A3A56;
}

[data-theme="dark"] .sidebar-heading {
  color: #9BA8BD;
}

[data-theme="dark"] .sidebar-nav-item {
  color: #C9D4E5;
}

[data-theme="dark"] .sidebar-nav-item i {
  color: #3B82F6;
}

[data-theme="dark"] .sidebar-nav-item:hover {
  background: #1C2940;
  color: #FFFFFF;
}

[data-theme="dark"] .sidebar-nav-item.active {
  background: linear-gradient(135deg, #1C2940 0%, #2A3A56 100%);
  border: 1px solid #3B82F6;
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.25);
}

[data-theme="dark"] .sidebar-nav-item.active i {
  color: #D4AF37;
}

/* Admin Responsive Navigation */
[data-theme="dark"] .admin-responsive-nav {
  background: #162033 !important;
  border-color: #2A3A56 !important;
}

[data-theme="dark"] .admin-nav-item {
  color: #9BA8BD;
}

[data-theme="dark"] .admin-nav-item:hover {
  background: #1C2940;
  color: #3B82F6;
}

[data-theme="dark"] .admin-nav-item.active {
  background: #3B82F6 !important;
  color: #FFFFFF !important;
}

/* Cards & Containers */
[data-theme="dark"] .card,
[data-theme="dark"] .nit-card,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .menu-card,
[data-theme="dark"] .auth-card {
  background-color: #162033 !important;
  border: 1px solid #2A3A56 !important;
  color: #FFFFFF;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .menu-card:hover {
  background-color: #1C2940 !important;
  border-color: #3B82F6 !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 0 0 0 1px #3B82F6;
}

[data-theme="dark"] .card-header,
[data-theme="dark"] .card-footer,
[data-theme="dark"] .nit-card-header {
  border-color: #2A3A56 !important;
  background: transparent !important;
}

/* Statistics Widgets */
[data-theme="dark"] .stat-value {
  color: #FFFFFF !important;
}

[data-theme="dark"] .stat-label {
  color: #9BA8BD !important;
}

/* Tables & Lists */
[data-theme="dark"] .table {
  color: #FFFFFF !important;
  border-color: #2A3A56 !important;
  --bs-table-bg: transparent;
  --bs-table-hover-bg: #1C2940;
}

[data-theme="dark"] .table > :not(caption) > * > * {
  border-bottom-color: #2A3A56;
}

[data-theme="dark"] .table-light,
[data-theme="dark"] thead.table-light,
[data-theme="dark"] thead.table-light th,
[data-theme="dark"] .table th {
  background-color: #1C2940 !important;
  color: #C9D4E5 !important;
  border-bottom: 1px solid #2A3A56 !important;
  font-weight: 700;
  letter-spacing: 0.5px;
}

[data-theme="dark"] .table td {
  color: #FFFFFF;
  background-color: transparent !important;
  border-bottom: 1px solid #2A3A56 !important;
}

[data-theme="dark"] .table-hover tbody tr:hover td {
  background-color: #1C2940 !important;
  color: #FFFFFF !important;
}

/* Search Box & Form Controls */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: #1C2940 !important;
  border: 1.5px solid #2A3A56 !important;
  color: #FFFFFF !important;
}

[data-theme="dark"] .form-control::placeholder {
  color: #9BA8BD !important;
  opacity: 1;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
  background-color: #1C2940 !important;
  border-color: #3B82F6 !important;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25) !important;
  color: #FFFFFF !important;
}

[data-theme="dark"] .input-group-text {
  background-color: #1C2940 !important;
  border: 1.5px solid #2A3A56 !important;
  color: #9BA8BD !important;
}

/* Buttons & Filter Tabs */
[data-theme="dark"] .btn-group {
  background-color: #162033 !important;
  border-color: #2A3A56 !important;
}

[data-theme="dark"] .bg-light {
  background-color: #1C2940 !important;
  color: #C9D4E5 !important;
  border-color: #2A3A56 !important;
}

[data-theme="dark"] .btn-light {
  background-color: #1C2940 !important;
  color: #FFFFFF !important;
  border-color: #2A3A56 !important;
}

[data-theme="dark"] .btn-light:hover {
  background-color: #223452 !important;
  color: #FFFFFF !important;
  border-color: #3B82F6 !important;
}

[data-theme="dark"] .btn-outline-secondary {
  color: #C9D4E5 !important;
  border-color: #2A3A56 !important;
  background-color: transparent;
}

[data-theme="dark"] .btn-outline-secondary:hover,
[data-theme="dark"] .btn-outline-secondary.active {
  background-color: #1C2940 !important;
  color: #FFFFFF !important;
  border-color: #3B82F6 !important;
}

[data-theme="dark"] .btn-outline-primary {
  color: #3B82F6 !important;
  border-color: #3B82F6 !important;
}

[data-theme="dark"] .btn-outline-primary:hover {
  background-color: #3B82F6 !important;
  color: #FFFFFF !important;
}

[data-theme="dark"] .btn-primary,
[data-theme="dark"] .btn-nit-primary {
  background: linear-gradient(135deg, #1D4ED8 0%, #3B82F6 100%) !important;
  border: none !important;
  color: #FFFFFF !important;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3) !important;
}

[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] .btn-nit-primary:hover {
  background: linear-gradient(135deg, #1E40AF 0%, #2563EB 100%) !important;
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.4) !important;
}

/* Modals & Dialogs */
[data-theme="dark"] .modal-content {
  background-color: #162033 !important;
  border: 1px solid #2A3A56 !important;
  color: #FFFFFF !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7) !important;
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
  border-color: #2A3A56 !important;
}

[data-theme="dark"] .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* Dropdown Menus */
[data-theme="dark"] .dropdown-menu {
  background-color: #162033 !important;
  border: 1px solid #2A3A56 !important;
  color: #FFFFFF !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6) !important;
}

[data-theme="dark"] .dropdown-item {
  color: #C9D4E5 !important;
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
  background-color: #1C2940 !important;
  color: #FFFFFF !important;
}

[data-theme="dark"] .dropdown-divider {
  border-color: #2A3A56 !important;
}

/* Offcanvas Sidebar */
[data-theme="dark"] .offcanvas {
  background-color: #162033 !important;
  color: #FFFFFF !important;
  border-color: #2A3A56 !important;
}

[data-theme="dark"] .offcanvas-header {
  border-color: #2A3A56 !important;
}

/* Alerts & Subtle Badges */
[data-theme="dark"] .alert-info {
  background-color: #1C2940 !important;
  border: 1px solid #2A3A56 !important;
  color: #C9D4E5 !important;
}

[data-theme="dark"] .bg-success-subtle {
  background-color: rgba(16, 185, 129, 0.15) !important;
  color: #34D399 !important;
  border-color: rgba(16, 185, 129, 0.3) !important;
}

[data-theme="dark"] .bg-warning-subtle {
  background-color: rgba(245, 158, 11, 0.15) !important;
  color: #FBBF24 !important;
  border-color: rgba(245, 158, 11, 0.3) !important;
}

[data-theme="dark"] .bg-danger-subtle {
  background-color: rgba(239, 68, 68, 0.15) !important;
  color: #F87171 !important;
  border-color: rgba(239, 68, 68, 0.3) !important;
}

[data-theme="dark"] .bg-info-subtle {
  background-color: rgba(59, 130, 246, 0.15) !important;
  color: #60A5FA !important;
  border-color: rgba(59, 130, 246, 0.3) !important;
}