/* ==========================================
   MODERN CSS RESET & BASE STYLES
   ========================================== */

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

:root {
  --primary-color: #10b981;
  --primary-dark: #059669;
  --primary-light: #34d399;
  --secondary-color: #3b82f6;
  --accent-color: #f59e0b;
  --dark-bg: #1f2937;
  --darker-bg: #111827;
  --light-bg: #f9fafb;
  --white: #ffffff;
  --text-dark: #1f2937;
  --text-gray: #6b7280;
  --text-light: #9ca3af;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul {
  list-style: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ==========================================
   NAVIGATION
   ========================================== */

.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.nav-wrapper {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-dark);
}

.logo-icon {
  font-size: 1.8rem;
}

.logo-text {
  letter-spacing: -0.5px;
}

.logo-highlight {
  color: var(--primary-color);
}

.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-menu a {
  font-weight: 600;
  color: var(--text-gray);
  position: relative;
  padding: 0.5rem 0;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

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

.nav-menu a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn-primary,
.btn-secondary,
.btn-outline,
.btn-large,
.btn-search {
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--light-bg);
  color: var(--text-dark);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--white);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.btn-outline {
  background: transparent;
  color: var(--text-dark);
  border: 2px solid var(--text-dark);
}

.btn-outline:hover {
  background: var(--text-dark);
  color: var(--white);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.05rem;
  border-radius: 14px;
}

.btn-white {
  background: var(--white);
  color: var(--primary-color);
}

.btn-white:hover {
  transform: scale(1.05);
}

.btn-transparent {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-transparent:hover {
  background: var(--white);
  color: var(--primary-color);
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero-section {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  padding: 6rem 2rem;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  color: var(--white);
  z-index: 1;
}

.rating-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.stars {
  color: var(--accent-color);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.highlight-text {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: #cbd5e1;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.stat-item {
  text-align: left;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 0.25rem;
}

.stat-label {
  color: #94a3b8;
  font-size: 0.95rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-card {
  position: relative;
  width: 100%;
  height: 500px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.decorative-shape {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  opacity: 0.2;
}

.shape-1 {
  width: 200px;
  height: 200px;
  top: -50px;
  right: -50px;
  animation: float 6s ease-in-out infinite;
}

.shape-2 {
  width: 150px;
  height: 150px;
  bottom: -30px;
  left: -30px;
  animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.student-card {
  background: var(--white);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 350px;
}

.student-avatar {
  font-size: 4rem;
}

.student-info h4 {
  color: var(--text-dark);
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.student-info p {
  color: var(--text-gray);
  font-size: 0.95rem;
}

/* ==========================================
   FEATURES SECTION
   ========================================== */

.features-section {
  padding: 6rem 2rem;
  background: var(--light-bg);
}

.section-container {
  max-width: 1280px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-gray);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--white);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

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

.feature-card.featured {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
}

.featured-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--accent-color);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.feature-description {
  color: inherit;
  opacity: 0.9;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.feature-link {
  color: var(--primary-color);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.featured .feature-link {
  color: var(--white);
  opacity: 0.9;
}

.feature-link:hover {
  gap: 0.75rem;
}

/* ==========================================
   SEARCH SECTION
   ========================================== */

.search-section {
  padding: 6rem 2rem;
  background: var(--white);
}

.search-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.search-header {
  text-align: center;
  margin-bottom: 3rem;
}

.search-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.search-subtitle {
  font-size: 1.1rem;
  color: var(--text-gray);
}

.search-form-modern {
  background: var(--light-bg);
  padding: 2.5rem;
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.input-group {
  width: 100%;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 1.25rem;
  font-size: 1.5rem;
  pointer-events: none;
}

.input-wrapper input {
  width: 100%;
  padding: 1.25rem 1.25rem 1.25rem 4rem;
  border: 2px solid var(--border-color);
  border-radius: 14px;
  font-size: 1.05rem;
  font-family: inherit;
  transition: all 0.3s ease;
  background: var(--white);
}

.input-wrapper input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.btn-search {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  padding: 1.25rem 2rem;
  border-radius: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.btn-search:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-search:active {
  transform: translateY(-1px);
}

.search-message {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  min-height: 24px;
}

/* ==========================================
   RESULTS SECTION
   ========================================== */

.results-section {
  padding: 4rem 2rem;
  background: var(--light-bg);
}

.results-header {
  text-align: center;
  margin-bottom: 3rem;
}

.results-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.results-count {
  color: var(--text-gray);
  font-size: 1.05rem;
}

.results-grid-modern {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.result-card-modern {
  background: var(--white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.4s ease;
  border: 1px solid var(--border-color);
}

.result-card-modern:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.result-header-modern {
  padding: 2rem;
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.result-logo-modern {
  width: 60px;
  height: 60px;
  border-radius: 15px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--light-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.result-logo-modern img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.result-info-modern {
  flex: 1;
}

.result-title-modern {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.result-location-modern {
  color: var(--text-gray);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.result-body-modern {
  padding: 1.5rem 2rem;
}

.result-website {
  color: var(--primary-color);
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.result-website:hover {
  gap: 0.75rem;
  text-decoration: underline;
}

.result-actions-modern {
  display: flex;
  gap: 1rem;
}

.btn-add-modern {
  flex: 1;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  padding: 0.875rem 1.5rem;
  border-radius: 12px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.btn-add-modern:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.btn-add-modern:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: scale(1);
}

/* ==========================================
   PROCESS SECTION
   ========================================== */

.process-section {
  padding: 6rem 2rem;
  background: var(--white);
}

.process-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 2rem;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.process-card {
  background: var(--light-bg);
  padding: 2.5rem;
  border-radius: 20px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-md);
  transition: all 0.4s ease;
}

.process-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.process-number {
  position: absolute;
  top: -15px;
  right: 20px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
}

.process-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

.process-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.process-description {
  color: var(--text-gray);
  line-height: 1.7;
  font-size: 0.95rem;
}

.process-arrow {
  font-size: 2.5rem;
  color: var(--primary-color);
  font-weight: 700;
}

.process-cta {
  text-align: center;
  margin-top: 4rem;
}

/* ==========================================
   CTA SECTION
   ========================================== */

.cta-section {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
  padding: 6rem 2rem;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -150px;
  right: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-container {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-content {
  text-align: center;
  color: var(--white);
}

.cta-title {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.cta-description {
  font-size: 1.25rem;
  color: #cbd5e1;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
  background: var(--dark-bg);
  color: #cbd5e1;
  padding: 4rem 2rem 2rem;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  max-width: 350px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
}

.footer-tagline {
  color: #94a3b8;
  line-height: 1.7;
}

.footer-column h4 {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-column a {
  color: #94a3b8;
  transition: all 0.3s ease;
}

.footer-column a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  text-align: center;
  color: #64748b;
  font-size: 0.9rem;
}

/* ==========================================
   TOAST NOTIFICATION
   ========================================== */

#toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--darker-bg);
  color: var(--white);
  padding: 1.25rem 2rem;
  border-radius: 14px;
  box-shadow: var(--shadow-xl);
  display: none;
  max-width: 350px;
  z-index: 9999;
  border-left: 4px solid var(--primary-color);
  animation: slideInRight 0.4s ease-out;
}

#toast.show {
  display: block;
}

@keyframes slideInRight {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .hero-image {
    order: -1;
  }
  
  .image-card {
    height: 400px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .process-grid {
    grid-template-columns: 1fr;
  }
  
  .process-arrow {
    transform: rotate(90deg);
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-wrapper {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  
  .nav-menu {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
  
  .nav-actions {
    width: 100%;
    justify-content: center;
  }
  
  .hero-section {
    padding: 4rem 1.5rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-description {
    font-size: 1.1rem;
  }
  
  .hero-stats {
    gap: 1.5rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .btn-large {
    width: 100%;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .cta-title {
    font-size: 2rem;
  }
  
  .cta-description {
    font-size: 1.1rem;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .search-form-modern {
    padding: 1.5rem;
  }
  
  .results-grid-modern {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .search-title {
    font-size: 1.75rem;
  }
  
  .input-wrapper input {
    font-size: 1rem;
    padding: 1rem 1rem 1rem 3.5rem;
  }
  
  .btn-search {
    font-size: 1rem;
    padding: 1rem 1.5rem;
  }
}