:root {
  --primary: #0f2a4a;
  --primary-light: #1a3f6e;
  --gold: #c9a227;
  --gold-light: #e0b840;
  --accent: #2c5282;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --text: #2d3748;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --error: #e53e3e;
  --success: #38a169;
  --radius: 8px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  background: var(--primary);
  color: #fff;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #fff;
}

.logo img {
  height: 40px;
  width: auto;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 0.75rem;
  opacity: 0.9;
  letter-spacing: 0.3px;
}

.nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.nav a {
  color: #fff;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: background 0.2s;
  font-size: 0.9rem;
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  background: rgba(255, 255, 255, 0.15);
}

.nav .btn-nav {
  background: var(--gold);
  color: var(--primary);
  font-weight: 600;
}

.nav .btn-nav:hover {
  background: var(--gold-light);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 4rem 1.5rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.95;
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
}

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

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

.btn-secondary {
  background: transparent;
  color: #fff;
  border: 2px solid #fff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Sections */
.section {
  padding: 3rem 1.5rem;
}

.section-alt {
  background: var(--surface);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid var(--border);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Forms */
.form-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--surface);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.15);
}

.form-group .error-msg {
  color: var(--error);
  font-size: 0.8rem;
  margin-top: 0.25rem;
  display: none;
}

.form-group.has-error input,
.form-group.has-error select {
  border-color: var(--error);
}

.form-group.has-error .error-msg {
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Buttons in forms */
.form-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
}

/* Success box */
.success-box {
  background: #f0fff4;
  border: 1px solid #9ae6b4;
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.success-box h2 {
  color: var(--success);
  margin-bottom: 0.5rem;
}

.success-box .reg-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--error);
  margin: 1rem 0;
}

/* Documents */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.doc-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
  transition: box-shadow 0.2s;
}

.doc-item:hover {
  box-shadow: var(--shadow);
}

.doc-icon {
  font-size: 1.5rem;
}

.doc-info {
  overflow: hidden;
}

.doc-info .doc-name {
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-info .doc-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Footer */
.footer {
  background: var(--primary);
  color: #fff;
  padding: 2rem 1.5rem 1rem;
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer h4 {
  margin-bottom: 0.75rem;
  color: var(--gold);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer ul {
  list-style: none;
}

.footer ul li {
  margin-bottom: 0.4rem;
}

.footer a {
  color: #cbd5e0;
  text-decoration: none;
  font-size: 0.85rem;
}

.footer a:hover {
  color: #fff;
}

.footer-bottom {
  max-width: 1200px;
  margin: 1.5rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  text-align: center;
  font-size: 0.8rem;
  color: #a0aec0;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .mobile-toggle {
    display: block;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
  }

  .nav.open {
    display: flex;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .logo-title {
    font-size: 0.95rem;
  }

  .logo-subtitle {
    font-size: 0.65rem;
  }
}

/* Carousel */
.hero-carousel {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 400px;
  overflow: hidden;
  background: var(--primary);
  padding-top: 60px;
}

.carousel-welcome {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 20;
  text-align: center;
  color: #fff;
  padding: 2rem;
  max-width: 900px;
  pointer-events: none;
}

.carousel-welcome h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.carousel-welcome p {
  font-size: 1.1rem;
  opacity: 0.95;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.carousel {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-slide {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50%;
  height: auto;
  max-height: 70vh;
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-slide.active {
  opacity: 1;
  z-index: 1;
}

.carousel-slide img {
  width: 100%;
  height: auto;
  max-height: 70vh;
  object-fit: contain;
  filter: brightness(0.45);
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border: none;
  font-size: 2rem;
  padding: 1rem;
  cursor: pointer;
  z-index: 10;
  transition: background 0.3s;
  border-radius: var(--radius);
}

.carousel-btn:hover {
  background: rgba(255, 255, 255, 0.4);
}

.carousel-btn.prev {
  left: 1rem;
}

.carousel-btn.next {
  right: 1rem;
}

@media (max-width: 768px) {
  .hero-carousel {
    height: 50vh;
    min-height: 300px;
    padding-top: 50px;
  }

  .carousel-slide {
    width: 90%;
  }

  .carousel-welcome h1 {
    font-size: 1.75rem;
  }

  .carousel-welcome p {
    font-size: 0.95rem;
  }

  .carousel-btn {
    font-size: 1.5rem;
    padding: 0.5rem;
  }
}

/* Utility */
.text-center {
  text-align: center;
}

.mt-2 {
  margin-top: 2rem;
}

.mb-2 {
  margin-bottom: 2rem;
}