/* MBAIntel - Design System */
:root {
  /* Color Palette */
  --primary-blue: #2563eb;
  --primary-blue-dark: #1e40af;
  --slate-900: #1e293b;
  --slate-800: #334155;
  --slate-700: #475569;
  --slate-600: #64748b;
  --slate-500: #94a3b8;
  --slate-400: #cbd5e1;
  --slate-300: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  color: var(--slate-900);
  background: linear-gradient(135deg, var(--slate-50) 0%, var(--white) 100%);
  line-height: 1.6;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--slate-900);
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--slate-700);
}

/* Navigation */
.navbar {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--primary-blue);
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--slate-700);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.nav-links a:hover {
  color: var(--primary-blue);
}

.nav-links a.active {
  color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.1);
  font-weight: 600;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.section {
  padding: var(--spacing-2xl) 0;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 50%, #1e3a8a 100%);
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
  color: var(--white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  border-radius: var(--radius-xl);
  margin: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}

/* Background Pattern */
.hero-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.1;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: patternMove 20s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes patternMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

/* Hero Illustration Base */
.hero-illustration {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

/* Gradient Orbs */
.hero-orb {
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.6;
  animation: float 15s ease-in-out infinite;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(147, 51, 234, 0.4) 0%, transparent 70%);
  top: -100px;
  left: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.4) 0%, transparent 70%);
  bottom: -50px;
  right: 15%;
  animation-delay: -5s;
}

.orb-3 {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.5) 0%, transparent 70%);
  top: 50%;
  left: 80%;
  animation-delay: -10s;
}

/* Floating Circles */
.hero-circle {
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.15);
  animation: floatCircle 20s ease-in-out infinite, rotate 30s linear infinite;
}

.circle-1 {
  width: 120px;
  height: 120px;
  top: 20%;
  left: 5%;
  animation-delay: 0s;
}

.circle-2 {
  width: 80px;
  height: 80px;
  bottom: 30%;
  right: 10%;
  animation-delay: -7s;
}

.circle-3 {
  width: 60px;
  height: 60px;
  top: 60%;
  left: 75%;
  animation-delay: -14s;
}

/* Hexagons */
.hero-hexagon {
  width: 100px;
  height: 100px;
  background: rgba(255, 255, 255, 0.1);
  clip-path: polygon(30% 0%, 70% 0%, 100% 50%, 70% 100%, 30% 100%, 0% 50%);
  animation: floatHexagon 18s ease-in-out infinite, rotate 25s linear infinite reverse;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hexagon-1 {
  top: 15%;
  right: 20%;
  animation-delay: 0s;
}

.hexagon-2 {
  width: 70px;
  height: 70px;
  bottom: 20%;
  left: 20%;
  animation-delay: -9s;
}

/* Float Animations */
@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -30px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

@keyframes floatCircle {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0.15;
  }
  50% {
    transform: translate(40px, -40px) rotate(180deg);
    opacity: 0.3;
  }
}

@keyframes floatHexagon {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0.2;
  }
  50% {
    transform: translate(-30px, 30px) rotate(180deg);
    opacity: 0.4;
  }
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  animation: rotate 25s linear infinite;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
  animation: pulse 5s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}

.hero h1 {
  color: var(--white);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 10;
  animation: fadeInUp 1s ease-out;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero p {
  color: rgba(255, 255, 255, 0.95);
  font-size: var(--font-size-lg);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
  animation: fadeInUp 1s ease-out 0.2s both;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.15);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Cards */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  border: 1px solid var(--slate-200);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* Feature Cards - Enhanced */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: 2rem;
  padding: 0;
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--slate-200);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  min-height: 280px;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), #3b82f6, var(--primary-blue));
  background-size: 200% 100%;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.2);
  border-color: var(--primary-blue);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  display: inline-block;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.feature-card:hover .feature-icon {
  transform: scale(1.15) rotate(5deg);
}

.feature-card h3 {
  color: var(--slate-900);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  transition: color 0.3s ease;
}

.feature-card:hover h3 {
  color: var(--primary-blue);
}

.feature-card p {
  color: var(--slate-600);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
  font-size: var(--font-size-base);
}

.feature-link {
  color: var(--primary-blue);
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-top: auto;
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s ease;
  display: inline-block;
}

.feature-card:hover .feature-link {
  opacity: 1;
  transform: translateX(0);
}

/* Individual card color themes */
.feature-card[data-feature="insights"] {
  border-top: 4px solid #10b981;
}

.feature-card[data-feature="insights"]:hover {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, transparent 100%);
}

.feature-card[data-feature="filtering"] {
  border-top: 4px solid #f59e0b;
}

.feature-card[data-feature="filtering"]:hover {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, transparent 100%);
}

.feature-card[data-feature="ai"] {
  border-top: 4px solid #8b5cf6;
}

.feature-card[data-feature="ai"]:hover {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, transparent 100%);
}

.feature-card[data-feature="compare"] {
  border-top: 4px solid #ef4444;
}

.feature-card[data-feature="compare"]:hover {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, transparent 100%);
}

.feature-card[data-feature="calculator"] {
  border-top: 4px solid #f59e0b;
}

.feature-card[data-feature="calculator"]:hover {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, transparent 100%);
}

.feature-card[data-feature="colleges"] {
  border-top: 4px solid #6366f1;
}

.feature-card[data-feature="colleges"]:hover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, transparent 100%);
}

/* Steps/How It Works Section */
.steps-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-top: 2rem;
  position: relative;
}

.steps-container::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 10%;
  right: 10%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-blue) 0%, #3b82f6 50%, var(--primary-blue) 100%);
  z-index: 0;
  opacity: 0.3;
}

@media (max-width: 968px) {
  .steps-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .steps-container::before {
    display: none;
  }
}

.step-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  border: 2px solid var(--slate-200);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15);
  border-color: var(--primary-blue);
}

.step-number {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 800;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
  z-index: 2;
}

.step-icon {
  font-size: 4rem;
  margin: var(--spacing-lg) 0 var(--spacing-md);
  display: block;
  transition: transform 0.4s ease;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.step-card:hover .step-icon {
  transform: scale(1.15) rotate(5deg);
}

.step-card h3 {
  color: var(--slate-900);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.step-card p {
  color: var(--slate-600);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn > * {
  position: relative;
  z-index: 1;
}

.btn-primary {
  background: var(--primary-blue);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
  animation: buttonPulse 2s ease-in-out infinite;
}

.btn-primary:hover {
  background: var(--primary-blue-dark);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
  animation: none;
}

.btn-primary:active {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

@keyframes buttonPulse {
  0%, 100% {
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
  }
  50% {
    box-shadow: 0 4px 25px rgba(37, 99, 235, 0.5);
  }
}

.btn-secondary {
  background: var(--slate-200);
  color: var(--slate-900);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
  background: var(--slate-300);
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-secondary:active {
  transform: translateY(0) scale(1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-blue);
  color: var(--primary-blue);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--white);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
  border-color: var(--primary-blue-dark);
}

.btn-outline:active {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

/* Hero section buttons - special styling */
.hero-buttons {
  position: relative;
  z-index: 10;
  display: inline-block;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 1s ease-out 0.4s both;
  margin-top: 2rem;
}

.hero .btn {
  position: relative;
  z-index: 11;
}

/* Enhanced button visibility in hero */
.hero .btn-primary {
  background: var(--white);
  color: var(--primary-blue);
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero .btn-primary:hover {
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary-blue-dark);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.hero .btn-outline {
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid var(--white);
  color: var(--white);
  font-weight: 700;
  backdrop-filter: blur(5px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.hero .btn-outline:hover {
  background: var(--white);
  color: var(--primary-blue);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  border-color: var(--white);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--slate-700);
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--slate-300);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-blue);
}

select.form-control {
  cursor: pointer;
}

/* Page Hero Sections */
.page-hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
  color: var(--white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  border-radius: var(--radius-xl);
  margin: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

.page-hero h1 {
  color: var(--white);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.95);
  font-size: var(--font-size-lg);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.15);
}

/* Filters */
.filters {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  margin-bottom: var(--spacing-xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  border: 1px solid var(--slate-200);
  animation: fadeInUp 0.8s ease-out 0.2s both;
  position: relative;
  overflow: hidden;
}

.filters::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), #3b82f6, var(--primary-blue));
  background-size: 200% 100%;
  animation: gradientShift 3s ease infinite;
}

.filters .form-group {
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.6s ease-out both;
}

.filters .form-group:nth-child(1) { animation-delay: 0.3s; }
.filters .form-group:nth-child(2) { animation-delay: 0.4s; }
.filters .form-group:nth-child(3) { animation-delay: 0.5s; }
.filters .form-group:nth-child(4) { animation-delay: 0.6s; }
.filters .form-group:nth-child(5) { animation-delay: 0.7s; }

.filters label {
  color: var(--slate-700);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  display: block;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filters .form-control {
  transition: all 0.3s ease;
  border: 2px solid var(--slate-300);
}

.filters .form-control:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

/* College List */
.college-list {
  display: grid;
  gap: var(--spacing-lg);
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.college-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border-left: 5px solid var(--primary-blue);
  position: relative;
  overflow: hidden;
  animation: slideInLeft 0.6s ease-out both;
}

.college-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary-blue), #3b82f6);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s ease;
}

.college-card:hover::before {
  transform: scaleY(1);
}

.college-card:nth-child(1) { animation-delay: 0.1s; }
.college-card:nth-child(2) { animation-delay: 0.2s; }
.college-card:nth-child(3) { animation-delay: 0.3s; }
.college-card:nth-child(4) { animation-delay: 0.4s; }
.college-card:nth-child(5) { animation-delay: 0.5s; }
.college-card:nth-child(n+6) { animation-delay: 0.6s; }

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.college-card:hover {
  transform: translateX(12px) translateY(-4px);
  box-shadow: 0 16px 32px rgba(37, 99, 235, 0.2);
  border-left-color: var(--primary-blue-dark);
}

.college-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.college-name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--slate-900);
}

.tier-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
}

.tier-1 { background: #fef3c7; color: #92400e; }
.tier-2 { background: #dbeafe; color: #1e40af; }
.tier-3 { background: #d1fae5; color: #065f46; }
.tier-4 { background: #fce7f3; color: #831843; }

/* Results Count */
#resultsCount {
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(37, 99, 235, 0.05) 100%);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-lg);
  animation: fadeInUp 0.6s ease-out;
  border-left: 4px solid var(--primary-blue);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

#resultsCount:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.college-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.detail-item {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  background: var(--slate-50);
  transition: all 0.3s ease;
}

.detail-item:hover {
  background: rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.detail-label {
  font-size: var(--font-size-xs);
  color: var(--slate-600);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  letter-spacing: 0.5px;
}

.detail-value {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--slate-900);
  transition: color 0.3s ease;
}

.detail-item:hover .detail-value {
  color: var(--primary-blue);
}

.roi-value {
  color: var(--primary-blue);
  font-size: var(--font-size-xl);
  animation: pulse 2s ease-in-out infinite;
}

/* Comparison Table */
.comparison-container {
  overflow-x: auto;
  margin: var(--spacing-xl) 0;
  animation: fadeInUp 0.8s ease-out;
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  padding: var(--spacing-sm);
  background: var(--slate-50);
}

.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  animation: scaleIn 0.6s ease-out;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--slate-200);
  transition: all 0.3s ease;
}

.comparison-table th {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
  color: var(--white);
  font-weight: 700;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  letter-spacing: 0.5px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.comparison-table tbody tr {
  transition: all 0.3s ease;
}

.comparison-table tbody tr:hover {
  background: linear-gradient(90deg, var(--slate-50) 0%, rgba(37, 99, 235, 0.05) 100%);
  transform: scale(1.01);
}

.comparison-table tbody tr:nth-child(even) {
  background: var(--slate-50);
}

.comparison-table tbody tr:nth-child(even):hover {
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.05) 0%, var(--slate-50) 100%);
}

.value-king {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%) !important;
  font-weight: 700;
  position: relative;
  animation: pulse 2s ease-in-out infinite;
  box-shadow: 0 0 0 4px rgba(251, 191, 36, 0.2);
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 4px rgba(251, 191, 36, 0.2);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(251, 191, 36, 0.1);
  }
}

.value-king::after {
  content: "👑";
  margin-left: var(--spacing-xs);
  animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

/* ROI Calculator */
.calculator {
  background: var(--white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  max-width: 700px;
  margin: var(--spacing-xl) auto;
  border: 1px solid var(--slate-200);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out;
}

.calculator::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), #3b82f6, var(--primary-blue));
  background-size: 200% 100%;
  animation: gradientShift 3s ease infinite;
}

.calculator h3 {
  color: var(--slate-900);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-2xl);
  position: relative;
  z-index: 1;
}

.calculator .form-group {
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out both;
}

.calculator .form-group:nth-child(1) { animation-delay: 0.2s; }
.calculator .form-group:nth-child(2) { animation-delay: 0.3s; }
.calculator .form-group:nth-child(3) { animation-delay: 0.4s; }

.calculator .form-control {
  transition: all 0.3s ease;
  border: 2px solid var(--slate-300);
  font-size: var(--font-size-base);
  padding: var(--spacing-md);
}

.calculator .form-control:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

.calculator-result {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, var(--slate-50) 0%, rgba(37, 99, 235, 0.05) 100%);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 2px solid var(--primary-blue);
  animation: slideInUp 0.6s ease-out;
  position: relative;
  overflow: hidden;
}

.calculator-result::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
  animation: rotate 15s linear infinite;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.calculator-result h3 {
  color: var(--primary-blue);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-2xl);
  position: relative;
  z-index: 1;
}

.calculator-result h4 {
  color: var(--primary-blue);
  position: relative;
  z-index: 1;
}

.calculator-result p {
  position: relative;
  z-index: 1;
}

/* Chatbot */
.chatbot-container {
  max-width: 900px;
  margin: var(--spacing-xl) auto;
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 650px;
  border: 1px solid var(--slate-200);
  animation: fadeInUp 0.8s ease-out;
}

.chatbot-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), #3b82f6, var(--primary-blue));
  background-size: 200% 100%;
  animation: gradientShift 3s ease infinite;
}

.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  background: linear-gradient(180deg, var(--slate-50) 0%, var(--white) 100%);
}

.chatbot-messages::-webkit-scrollbar {
  width: 8px;
}

.chatbot-messages::-webkit-scrollbar-track {
  background: var(--slate-100);
  border-radius: var(--radius-sm);
}

.chatbot-messages::-webkit-scrollbar-thumb {
  background: var(--primary-blue);
  border-radius: var(--radius-sm);
}

.chatbot-messages::-webkit-scrollbar-thumb:hover {
  background: var(--primary-blue-dark);
}

.message {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  max-width: 85%;
  word-wrap: break-word;
  animation: fadeInUp 0.3s ease-out;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  line-height: 1.6;
}

.message.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
  color: var(--white);
  border-bottom-right-radius: 4px;
}

.message.bot {
  align-self: flex-start;
  background: var(--white);
  color: var(--slate-900);
  border: 1px solid var(--slate-200);
  border-bottom-left-radius: 4px;
}

.message.bot strong {
  color: var(--primary-blue);
}

.typing-indicator {
  opacity: 0.7;
  font-style: italic;
}

.typing-indicator p {
  animation: pulse 1.5s ease-in-out infinite;
}

.chatbot-input {
  display: flex;
  padding: var(--spacing-lg);
  border-top: 2px solid var(--slate-200);
  gap: var(--spacing-md);
  background: var(--white);
}

.chatbot-input input {
  flex: 1;
  padding: var(--spacing-md);
  border: 2px solid var(--slate-300);
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: all 0.3s ease;
}

.chatbot-input input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.chatbot-input .btn {
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
}

/* Team Section */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.team-member {
  text-align: center;
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.team-member h3 {
  color: var(--primary-blue);
  margin-top: var(--spacing-md);
}

/* Utilities */
.text-center { text-align: center; }
.text-primary { color: var(--primary-blue); }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* Responsive Design */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .nav-links {
    justify-content: center;
  }
  
  .hero h1 {
    font-size: var(--font-size-3xl);
  }
  
  .filters {
    grid-template-columns: 1fr;
  }
  
  .college-header {
    flex-direction: column;
  }
  
  .comparison-container {
    overflow-x: scroll;
  }
  
  .chatbot-container {
    height: 500px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: var(--spacing-sm);
  }
  
  .hero {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .hero h1 {
    font-size: var(--font-size-2xl);
  }
}