:root {
  --primary-color: #1e40af;
  --primary-dark: #1e3a8a;
  --secondary-color: #f59e0b;
  --accent-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --success-color: #10b981;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --bg-white: #ffffff;
  --bg-gray-50: #f9fafb;
  --bg-gray-100: #f3f4f6;
  --bg-gray-200: #e5e7eb;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --gradient-primary: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
  --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --gradient-accent: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

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

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-white);
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 115px;
  height: 55px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 20px;
}

.logo-img::before {
  content: "FSTU";
}


/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 16px;
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
  background-color: var(--bg-gray-50);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* Language Switch */
.language-switch {
  display: flex;
  background: var(--bg-gray-100);
  border-radius: 8px;
  padding: 4px;
}

.lang-btn {
  background: none;
  border: none;
  padding: 8px 12px;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--text-secondary);
}

.lang-btn.active {
  background: var(--bg-white);
  color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-primary);
  cursor: pointer;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: var(--bg-white);
  box-shadow: var(--shadow-md);
  z-index: 999;
  padding: 20px;
}

.mobile-nav-link {
  display: block;
  text-decoration: none;
  color: var(--text-primary);
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(30, 64, 175, 0.1) 0%,
    transparent 70%
  );
  border-radius: 50%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

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

.hero-illustration {
  width: 300px;
  height: 300px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  color: white;
  box-shadow: var(--shadow-xl);
  animation: float 6s ease-in-out infinite;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

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

/* Quick Stats */
.quick-stats {
  padding: 60px 0;
  background: var(--bg-white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.stat-card {
  background: var(--bg-white);
  padding: 32px 24px;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 20px;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: white;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-label {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Report Section */
.report-section {
  padding: 80px 0;
  background: var(--bg-gray-50);
}

.report-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.report-option-card {
  background: var(--bg-white);
  padding: 32px 24px;
  border-radius: 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid var(--border-color);
}

.report-option-card:hover,
.report-option-card.active {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.report-option-card.active {
  background: linear-gradient(
    135deg,
    rgba(30, 64, 175, 0.05) 0%,
    rgba(30, 58, 138, 0.05) 100%
  );
}

.option-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: white;
  margin: 0 auto 20px;
}

.report-option-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.report-option-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Forms */
.form-container {
  display: none;
  background: var(--bg-white);
  padding: 40px;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  max-width: 800px;
  margin: 0 auto;
}

.form-container.active {
  display: block;
}

.report-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group small {
  color: var(--text-light);
  font-size: 0.85rem;
}

/* Checkbox */
.checkbox-group {
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
}

/* Rating */
.rating-group {
  background: var(--bg-gray-50);
  padding: 20px;
  border-radius: 12px;
}

.rating-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.stars {
  display: flex;
  gap: 4px;
  flex-direction: row-reverse;
}

.stars input[type="radio"] {
  display: none;
}

.stars label {
  cursor: pointer;
  font-size: 24px;
  color: var(--border-color);
  transition: color 0.3s ease;
}

.stars input[type="radio"]:checked ~ label,
.stars label:hover,
.stars label:hover ~ label {
  color: var(--secondary-color);
}

/* Statistics Section */
.statistics-section {
  padding: 80px 0;
  background: var(--bg-white);
}

.stats-dashboard {
  display: grid;
  gap: 32px;
}

.dashboard-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: 24px 32px;
  background: var(--bg-gray-50);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.update-time {
  color: var(--text-light);
  font-size: 0.85rem;
}

.card-content {
  padding: 32px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 8px;
}

.metric-label {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Faculty Stats */
.faculty-stats {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.faculty-stat {
  display: flex;
  align-items: center;
  gap: 16px;
}

.faculty-name {
  min-width: 200px;
  font-weight: 500;
  color: var(--text-primary);
}

.progress-bar {
  flex: 1;
  height: 8px;
  background: var(--bg-gray-200);
  border-radius: 4px;
  overflow: hidden;
}

.progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 4px;
  transition: width 0.8s ease;
}

.stat-value {
  min-width: 50px;
  text-align: right;
  font-weight: 600;
  color: var(--primary-color);
}

/* About Section */
.about-section {
  padding: 80px 0;
  background: var(--bg-gray-50);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
}

.about-text h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  margin-top: 32px;
}

.about-text h3:first-child {
  margin-top: 0;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.principles-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.principles-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.principles-list li i {
  color: var(--success-color);
  font-size: 1.1rem;
}

.legal-documents {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 24px;
}

.document {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-white);
  border-radius: 12px;
  border-left: 4px solid var(--primary-color);
}

.document i {
  color: var(--primary-color);
  font-size: 1.5rem;
  margin-top: 4px;
}

.document h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.document p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

/* Contact Info Section */
.contact-info-section h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.contact-cards {
  display: grid;
  gap: 20px;
}

.contact-card {
  background: var(--bg-white);
  padding: 24px;
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.contact-card i {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 12px;
}

.contact-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.contact-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 0;
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: var(--bg-gray-200);
  padding: 60px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: white;
  margin-bottom: 20px;
}

.footer-section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-section ul li a {
  color: var(--bg-gray-200);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: white;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-info p {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.contact-info i {
  color: var(--primary-color);
  width: 16px;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  color: var(--bg-gray-200);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.footer-bottom p:last-child {
  margin-bottom: 0;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  backdrop-filter: blur(4px);
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--bg-white);
  border-radius: 16px;
  padding: 0;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  padding: 32px 32px 24px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.success-icon {
  font-size: 4rem;
  color: var(--success-color);
  margin-bottom: 16px;
}

.modal-header h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.modal-body {
  padding: 24px 32px;
}

.modal-body p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.modal-body p:last-child {
  margin-bottom: 0;
}

.modal-footer {
  padding: 24px 32px 32px;
  text-align: center;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-title {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .nav {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero {
    padding: 100px 0 60px;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

  .stat-card {
    flex-direction: column;
    text-align: center;
  }

  .report-options {
    grid-template-columns: 1fr;
  }

  .form-container {
    padding: 24px;
    margin: 0 16px;
  }

  .faculty-stat {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .faculty-name {
    min-width: auto;
    text-align: center;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .metric-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 24px;
  }

  .metric-value {
    font-size: 2.5rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-illustration {
    width: 200px;
    height: 200px;
    font-size: 80px;
  }

  .form-container {
    padding: 20px;
    margin: 0 8px;
  }

  .modal-content {
    margin: 20px;
    width: calc(100% - 40px);
  }

  .modal-header {
    padding: 24px 20px 20px;
  }

  .modal-body {
    padding: 20px;
  }

  .modal-footer {
    padding: 20px;
  }
}

/* Print Styles */
@media print {
  .header,
  .mobile-nav,
  .hero-buttons,
  .footer,
  .modal {
    display: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.4;
  }

  .hero {
    padding: 20px 0;
  }

  .section-title {
    font-size: 18pt;
    margin-bottom: 10px;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --bg-white: #ffffff;
    --text-primary: #000000;
    --primary-color: #000080;
    --border-color: #000000;
  }
}

/* Focus Styles */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Loading States */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-group input:invalid {
  border-color: var(--danger-color);
}

.form-group input:valid {
  border-color: var(--success-color);
}