/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #1a3a5c;
  --color-accent: #2e86de;
  --color-accent-hover: #1b6dbf;
  --color-dark: #0f2133;
  --color-light: #f7f9fc;
  --color-text: #333;
  --color-text-muted: #667;
  --color-border: #e0e4ea;
  --color-white: #fff;
  --max-width: 1120px;
  --radius: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.65;
  font-size: 16px;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-hover);
}

img,
svg {
  display: block;
  max-width: 100%;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Navigation ===== */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-primary);
}

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

.logo-link svg {
  width: 40px;
  height: 40px;
}

.main-nav {
  display: flex;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  margin: 5px 0;
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-dark));
  color: var(--color-white);
  padding: 96px 0 80px;
  text-align: center;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 36px;
  opacity: 0.88;
  line-height: 1.7;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), transform var(--transition);
  cursor: pointer;
  border: none;
}

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

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

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

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--color-white);
}

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

/* ===== Sections ===== */
.section {
  padding: 80px 0;
}

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

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 48px;
  max-width: 560px;
}

.text-center {
  text-align: center;
}

.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ===== Cards Grid ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===== Features / Two-column ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.two-col h2 {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.two-col p {
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.7;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
}

.feature-list li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  color: var(--color-text);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.25rem;
  color: var(--color-accent);
  font-weight: 700;
}

.stat-item p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* ===== Team ===== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.team-member {
  text-align: center;
}

.team-avatar {
  width: 96px;
  height: 96px;
  background: var(--color-light);
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}

.team-member h3 {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin-bottom: 4px;
}

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

/* ===== Contact Form ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}

.contact-info h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 8px;
  margin-top: 24px;
}

.contact-info h3:first-child {
  margin-top: 0;
}

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

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.btn-submit {
  background: var(--color-accent);
  color: var(--color-white);
  padding: 14px 40px;
  border: none;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-submit:hover {
  background: var(--color-accent-hover);
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-dark));
  color: var(--color-white);
  padding: 64px 0;
  text-align: center;
}

.cta-banner h2 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.cta-banner p {
  opacity: 0.85;
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.6);
  padding: 48px 0 32px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  margin-top: 12px;
  line-height: 1.7;
}

.footer-brand .logo-link {
  color: var(--color-white);
}

.site-footer h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.site-footer ul {
  list-style: none;
}

.site-footer li {
  margin-bottom: 8px;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.6);
}

.site-footer a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
}

/* ===== Page Header (inner pages) ===== */
.page-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-dark));
  color: var(--color-white);
  padding: 56px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2.25rem;
  margin-bottom: 10px;
}

.page-header p {
  opacity: 0.8;
  font-size: 1.05rem;
}

/* ===== Values / Process ===== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  counter-reset: step;
}

.value-item {
  text-align: center;
  padding: 28px 20px;
}

.value-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 16px;
}

.value-item h3 {
  color: var(--color-primary);
  margin-bottom: 8px;
}

.value-item p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 16px 24px;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 0;
    border-bottom: none;
  }

  .hero {
    padding: 64px 0 56px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .section {
    padding: 56px 0;
  }

  .two-col,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .page-header {
    padding: 40px 0;
  }

  .page-header h1 {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .stats {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 1.6rem;
  }
}