/* Custom modern CSS styles for ThinkToSkill Virtual Academy */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary-navy: #0b1528;
  --brand-blue: #2563eb;
  --brand-cyan: #06b6d4;
  --accent-orange: #f97316;
  --whatsapp-green: #25d366;
  --card-bg: #ffffff;
  --surface-light: #f8fafc;
}

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  overflow-x: hidden;
  max-width: 100%;
}

body {
  overflow-x: hidden;
  max-width: 100%;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Gradient accents */
.gradient-text-blue {
  background: linear-gradient(135deg, #1d4ed8 0%, #0284c7 50%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-orange {
  background: linear-gradient(135deg, #ea580c 0%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-hero-bg {
  background: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.08) 0%, rgba(248, 250, 252, 1) 70%),
              radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.08) 0%, rgba(248, 250, 252, 1) 70%);
}

.dark-hero-mesh {
  background-color: #0b1329;
  background-image: 
    radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.3) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.25) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(30, 58, 138, 0.4) 0px, transparent 50%);
}

/* Glowing dot for live batches */
.pulse-live {
  position: relative;
}

.pulse-live::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #22c55e;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  animation: pulse-ring 1.8s infinite cubic-bezier(0.66, 0, 0, 1);
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(34, 197, 94, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
  }
}

/* WhatsApp floating pulse */
.whatsapp-float-btn {
  animation: whatsapp-glow 2.5s infinite;
}

@keyframes whatsapp-glow {
  0%, 100% {
    box-shadow: 0 4px 14px 0 rgba(37, 211, 102, 0.4);
  }
  50% {
    box-shadow: 0 4px 24px 6px rgba(37, 211, 102, 0.7);
  }
}

/* Subtle glassmorphism */
.glass-panel {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.8);
}

.dark-glass-panel {
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Partner logo ticker styling */
.logo-ticker {
  display: flex;
  overflow: hidden;
  user-select: none;
  gap: 2rem;
}

.logo-ticker-track {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: space-around;
  gap: 2rem;
  min-width: 100%;
  animation: scroll-marquee 28s linear infinite;
}

.logo-ticker:hover .logo-ticker-track {
  animation-play-state: paused;
}

@keyframes scroll-marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-100%);
  }
}

/* Toast alert styling */
#toast-container {
  position: fixed;
  bottom: 84px;
  right: 16px;
  left: 16px;
  max-width: calc(100% - 32px);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

@media (min-width: 640px) {
  #toast-container {
    bottom: 24px;
    right: 24px;
    left: auto;
    max-width: 420px;
  }
}

.toast {
  transform: translateY(100%);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Autocomplete Search Dropdown */
.search-results-dropdown {
  max-height: 340px;
  overflow-y: auto;
  box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   Mobile & Tablet Responsiveness Enhancements (ThinkToSkill Virtual Academy)
   ========================================================================== */

/* 1. Touch & Tap Ergonomics */
button, a, input, select, textarea {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* 2. Momentum Scrolling for Mobile & Tablet */
.overflow-x-auto, .overflow-y-auto, [class*="overflow-"] {
  -webkit-overflow-scrolling: touch;
}

/* 3. Prevent iOS Safari auto-zoom on form controls (< 16px causes auto-zoom on focus) */
@media screen and (max-width: 640px) {
  input[type="text"],
  input[type="tel"],
  input[type="email"],
  input[type="password"],
  input[type="number"],
  input[type="search"],
  select,
  textarea {
    font-size: 16px !important;
  }
}

/* 4. Safe Area Insets for Modern Mobile Devices (iPhone notch & home indicator) */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .whatsapp-float-btn {
    bottom: calc(12px + env(safe-area-inset-bottom));
  }
  #floating-student-reg-btn {
    bottom: calc(12px + env(safe-area-inset-bottom));
  }
  @media (min-width: 640px) {
    .whatsapp-float-btn {
      bottom: calc(24px + env(safe-area-inset-bottom));
    }
    #floating-student-reg-btn {
      bottom: calc(24px + env(safe-area-inset-bottom));
    }
  }
}

/* 5. Mobile Table Swipe Indicator */
.table-responsive-wrapper {
  position: relative;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* 6. Mobile Nav Transition */
#mobile-menu {
  transition: all 0.25s ease-in-out;
}

/* ==========================================================================
   Header Navigation Active Tab Highlighting System
   ========================================================================== */

/* Desktop Navigation Link Base */
.nav-tab-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.875rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #475569; /* slate-600 */
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  border: 1px solid transparent;
  text-decoration: none;
}

.nav-tab-link:hover {
  color: #2563eb; /* blue-600 */
  background-color: #f8fafc; /* slate-50 */
}

/* Desktop Active Tab Pill */
.nav-tab-link.active {
  color: #1d4ed8 !important; /* blue-700 */
  background-color: #eff6ff !important; /* blue-50 */
  font-weight: 800 !important;
  border-color: #bfdbfe !important; /* blue-200 */
  box-shadow: 0 1px 3px 0 rgba(37, 99, 235, 0.1), 0 1px 2px -1px rgba(37, 99, 235, 0.06);
}

.nav-tab-link .active-dot {
  display: none;
  width: 6px;
  height: 6px;
  border-radius: 9999px;
  background-color: #2563eb;
  box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
  animation: pulse-ring 2s infinite cubic-bezier(0.66, 0, 0, 1);
  flex-shrink: 0;
}

.nav-tab-link.active .active-dot {
  display: inline-block !important;
}

/* Mobile Drawer Nav Tab Link */
.mobile-nav-tab-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #334155; /* slate-700 */
  transition: all 0.2s ease;
  border-left: 4px solid transparent;
  text-decoration: none;
}

.mobile-nav-tab-link:hover {
  background-color: #f1f5f9;
  color: #2563eb;
}

/* Mobile Active Tab State */
.mobile-nav-tab-link.active {
  background-color: #eff6ff !important;
  color: #1d4ed8 !important;
  font-weight: 800 !important;
  border-left-color: #2563eb !important;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.mobile-nav-tab-link .mobile-active-pill {
  display: none;
}

.mobile-nav-tab-link.active .mobile-active-pill {
  display: inline-flex !important;
}