@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400;1,600&display=swap');

:root {
  --brand-blue: #005A9C;
  --brand-blue-hover: #00457A;
  --brand-navy: #0B1E36;
  --brand-cyan: #00AEEF;
  --slate-dark: #0F172A;
  --slate-body: #1E293B;
  --slate-muted: #475569;
  --border-color: #E2E8F0;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--slate-body);
  background-color: #FFFFFF;
  margin: 0;
  padding: 0;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* High Legibility Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  color: var(--slate-dark);
  letter-spacing: -0.025em;
  line-height: 1.25;
}

/* HIGH-IMPACT CATCHY GRADIENT ACCENTS */
.gradient-text-brand {
  background: linear-gradient(135deg, #005A9C 0%, #00AEEF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-purple {
  background: linear-gradient(135deg, #7C3AED 0%, #DB2777 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;
}

/* COLORFUL SUBJECT BADGES */
.badge-foundational {
  background: #FDF2F8;
  color: #BE185D;
  border: 1px solid #FBCFE8;
}
.badge-english {
  background: #F5F3FF;
  color: #6D28D9;
  border: 1px solid #DDD6FE;
}
.badge-hindi {
  background: #FFFBEB;
  color: #B45309;
  border: 1px solid #FDE68A;
}
.badge-computer {
  background: #ECFEFF;
  color: #0E7490;
  border: 1px solid #A5F3FC;
}
.badge-gk {
  background: #FFF7ED;
  color: #C2410C;
  border: 1px solid #FED7AA;
}
.badge-reasoning {
  background: #ECFDF5;
  color: #047857;
  border: 1px solid #A7F3D0;
}
.badge-lifeskills {
  background: #FDF2F8;
  color: #BE185D;
  border: 1px solid #FBCFE8;
}
.badge-science {
  background: #F0FDF4;
  color: #15803D;
  border: 1px solid #BBF7D0;
}

/* MODERN FLOATING & GRAVITY ANIMATIONS */
@keyframes floatGravity1 {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-14px) rotate(1.5deg);
  }
}

@keyframes floatGravity2 {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-18px) rotate(-2deg);
  }
}

@keyframes floatGravitySlow {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes rainbowPulse {
  0%, 100% {
    box-shadow: 0 10px 30px rgba(0, 90, 156, 0.15);
  }
  50% {
    box-shadow: 0 20px 45px rgba(0, 174, 239, 0.3);
  }
}

.animate-gravity-1 {
  animation: floatGravity1 5s ease-in-out infinite;
}

.animate-gravity-2 {
  animation: floatGravity2 6s ease-in-out infinite;
}

.animate-gravity-slow {
  animation: floatGravitySlow 4.5s ease-in-out infinite;
}

/* 3D Perspective & Catchy Interactive Cards */
.perspective-container {
  perspective: 1200px;
}

.tilt-3d-card {
  transform-style: preserve-3d;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
}

.tilt-3d-card:hover {
  transform: perspective(1200px) rotateY(-4deg) rotateX(4deg) translateY(-8px) scale(1.03);
  box-shadow: 0 24px 48px rgba(0, 90, 156, 0.2);
}

/* Clean Header */
.glass-header {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.25s ease;
}

.nav-link-item {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #334155;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-link-item:hover {
  color: var(--brand-blue);
  background-color: #F1F5F9;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8125rem 1.75rem;
  background: linear-gradient(135deg, #005A9C 0%, #0284C7 100%);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: 0.625rem;
  text-decoration: none;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 90, 156, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #00457A 0%, #0369A1 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(0, 90, 156, 0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8125rem 1.75rem;
  background-color: #FFFFFF;
  color: var(--brand-blue) !important;
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: 0.625rem;
  text-decoration: none;
  border: 2px solid #CBD5E1;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: var(--brand-blue);
  background-color: #F8FAFC;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
}

/* Interactive Vibrant Book Cards */
.card-base {
  background: #FFFFFF;
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.card-base:hover {
  border-color: #60A5FA;
  transform: translateY(-6px);
  box-shadow: 0 18px 36px rgba(0, 90, 156, 0.12);
}

/* Faculty Profile Card */
.faculty-card {
  background: #FFFFFF;
  border-radius: 1rem;
  border: 1px solid #E2E8F0;
  transition: all 0.3s ease;
}

.faculty-card:hover {
  border-color: #38BDF8;
  transform: translateY(-5px);
  box-shadow: 0 16px 32px rgba(0, 90, 156, 0.1);
}

/* Dropdown */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #FFFFFF;
  border-radius: 0.875rem;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.14);
  border: 1px solid var(--border-color);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s ease;
  z-index: 60;
  pointer-events: none;
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* Modal Drawer */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(6px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  bottom: 0;
  width: 100%;
  max-width: 540px;
  background: #FFFFFF;
  z-index: 1000;
  overflow-y: auto;
  box-shadow: -12px 0 50px rgba(0, 0, 0, 0.2);
  transition: right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-drawer.active {
  right: 0;
}

/* Catchy Hero Background */
.bg-hero-clean {
  background: radial-gradient(circle at 80% 20%, #E0F2FE 0%, #F0F7FF 50%, #FFFFFF 100%);
}