/* engineering-school.css */

:root {
  --school-blue: #003366;
  --school-burgundy: #800020;
  --school-cream: #F5F7FA;
  --school-gold: #D4AF37;
  --text-main: #2C3E50;
}

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background-color: #fff;
}

.hero-gradient {
  background: linear-gradient(135deg, #003366 0%, #001f3f 100%);
}

.portal-glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
}

.portal-shadow {
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-page-in {
  animation: fadeInUp 0.5s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

.route-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--school-gold);
  z-index: 9999;
  width: 0%;
  pointer-events: none;
  transition: width 0.3s ease;
}

/* Custom Scrollbar */
.custom-scrollbar::-webkit-scrollbar {
  width: 4px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: #f1f1f1;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: var(--school-blue);
  border-radius: 10px;
}

/* Mobile Menu Refined Transitions */
#mobile-menu {
  transition: visibility 0.4s, opacity 0.4s;
}

#menu-backdrop {
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

#menu-sidebar {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-item {
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

#mobile-menu:not(.invisible) .nav-item {
  opacity: 1;
  transform: translateX(0);
}

#mobile-menu:not(.invisible) .nav-item:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu:not(.invisible) .nav-item:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu:not(.invisible) .nav-item:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu:not(.invisible) .nav-item:nth-child(4) { transition-delay: 0.25s; }
#mobile-menu:not(.invisible) .nav-item:nth-child(5) { transition-delay: 0.3s; }
#mobile-menu:not(.invisible) .nav-item:nth-child(6) { transition-delay: 0.35s; }
#mobile-menu:not(.invisible) .nav-item:nth-child(7) { transition-delay: 0.4s; }

/* Enhanced Modal Styles */
.modal-header-accent {
  background: linear-gradient(135deg, var(--school-blue) 0%, #001f3f 100%);
  position: relative;
  overflow: hidden;
}

.modal-header-accent::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.section-card {
  background: #fff;
  border: 1px solid rgba(0, 51, 102, 0.08);
  border-left: 4px solid var(--school-gold);
  border-radius: 4px;
  padding: 1.5rem;
  height: 100%;
  transition: all 0.3s ease;
}

.section-card:hover {
  box-shadow: 0 10px 25px rgba(0, 51, 102, 0.05);
  transform: translateY(-2px);
}

.cert-pill {
  background: var(--school-cream);
  border: 1px solid rgba(128, 0, 32, 0.05);
  transition: all 0.2s ease;
}

.cert-pill:hover {
  border-color: var(--school-burgundy);
  background: white;
}

/* Mobile Menu Transitions */
#menu-backdrop {
  transition: opacity 0.4s ease;
}

#menu-sidebar {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#menu-sidebar .nav-item {
  opacity: 0;
  transform: translateX(-20px) scale(0.95);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#mobile-menu:not(.invisible) #menu-sidebar .nav-item {
  opacity: 1;
  transform: translateX(0) scale(1);
}

#menu-sidebar .nav-item:nth-child(1) { transition-delay: 0.05s; }
#menu-sidebar .nav-item:nth-child(2) { transition-delay: 0.1s; }
#menu-sidebar .nav-item:nth-child(3) { transition-delay: 0.15s; }
#menu-sidebar .nav-item:nth-child(4) { transition-delay: 0.2s; }
#menu-sidebar .nav-item:nth-child(5) { transition-delay: 0.25s; }
#menu-sidebar .nav-item:nth-child(6) { transition-delay: 0.3s; }
#menu-sidebar .nav-item:nth-child(7) { transition-delay: 0.35s; }
#menu-sidebar .nav-item:nth-child(8) { transition-delay: 0.4s; }
#menu-sidebar .nav-item:nth-child(9) { transition-delay: 0.45s; }
#menu-sidebar .nav-item:nth-child(10) { transition-delay: 0.5s; }

/* Page transitions */
.page-content {
  display: none;
}

.page-content.active {
  display: block;
}

/* Utility simulation for vanilla */
.bg-school-blue { background-color: var(--school-blue); }
.text-school-blue { color: var(--school-blue); }
.bg-school-burgundy { background-color: var(--school-burgundy); }
.text-school-burgundy { color: var(--school-burgundy); }
.bg-school-cream { background-color: var(--school-cream); }
.bg-school-gold { background-color: var(--school-gold); }
.text-school-gold { color: var(--school-gold); }

/* Scroll Reveal Animations */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.2, 1, 0.3, 1);
  will-change: transform, opacity;
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Chatbot Styles */
#student-chatbot {
  opacity: 0;
  pointer-events: none;
  transition: all 0.5s ease;
  transform: translateY(20px);
}

body.chatbot-allowed #student-chatbot {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

#chat-window.active {
  display: flex;
  opacity: 1;
  scale: 1;
  transform: translateY(0);
}

#chat-messages::-webkit-scrollbar {
  width: 4px;
}

#chat-messages::-webkit-scrollbar-thumb {
  background: rgba(0, 51, 102, 0.1);
  border-radius: 10px;
}

.chat-bubble-user {
  background: var(--school-blue);
  color: white;
  border-radius: 20px 20px 0 20px;
  align-self: flex-end;
  margin-left: auto;
}

.chat-bubble-bot {
  background: white;
  color: var(--school-blue);
  border-radius: 20px 20px 20px 0;
  border: 1px solid rgba(0, 51, 102, 0.05);
}

/* Staggered reveal for children */
.reveal-cascade > * {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.2, 1, 0.3, 1);
}

.reveal-cascade.is-revealed > * {
  opacity: 1;
  transform: translateY(0);
}

.reveal-cascade.is-revealed > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-cascade.is-revealed > *:nth-child(2) { transition-delay: 0.2s; }
.reveal-cascade.is-revealed > *:nth-child(3) { transition-delay: 0.3s; }
.reveal-cascade.is-revealed > *:nth-child(4) { transition-delay: 0.4s; }
.reveal-cascade.is-revealed > *:nth-child(5) { transition-delay: 0.5s; }
.reveal-cascade.is-revealed > *:nth-child(6) { transition-delay: 0.6s; }

/* Back to Top States */
#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Grid and other Tailwind classes will be provided by CDN in index.html */