/* === Global Styles === */
@import url('variables.css');

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--color-primary-dark);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-4xl) 0;
}

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

.section-title {
  font-size: var(--text-3xl);
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--color-secondary-dark);
}

.section-subtitle {
  font-size: var(--text-lg);
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: var(--space-3xl);
}

/* === Navigation === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: box-shadow var(--transition-normal);
}

.nav.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-secondary-dark);
  text-decoration: none;
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.nav-links a {
  color: var(--color-text);
  font-size: var(--text-base);
  padding: var(--space-sm) 0;
  position: relative;
  text-decoration: none;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

/* Body offset for fixed nav */
.page-body {
  padding-top: var(--nav-height);
}

/* === Hero === */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--color-secondary-dark);
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,39,68,0.88), rgba(25,118,210,0.75));
}

.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  padding: var(--space-4xl) var(--space-lg);
}

.hero h1 {
  font-size: var(--text-4xl);
  color: #fff;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.05em;
}

.hero p {
  font-size: var(--text-xl);
  opacity: 0.9;
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* === Page Banner (inner pages) === */
.page-banner {
  background: linear-gradient(135deg, var(--color-secondary-dark), var(--color-secondary));
  color: #fff;
  text-align: center;
  padding: var(--space-4xl) var(--space-lg);
}

.page-banner h1 {
  font-size: var(--text-3xl);
  color: #fff;
  margin-bottom: var(--space-sm);
}

.page-banner p {
  font-size: var(--text-lg);
  opacity: 0.85;
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  border: none;
  line-height: 1.5;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

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

.btn-outline:hover {
  background: #fff;
  color: var(--color-secondary-dark);
}

.btn-secondary {
  background: var(--color-secondary);
  color: #fff;
}

.btn-secondary:hover {
  background: var(--color-secondary-dark);
  color: #fff;
}

/* === Footer === */
.footer {
  background: var(--color-secondary-dark);
  color: rgba(255,255,255,0.8);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer h3 {
  color: #fff;
  font-size: var(--text-lg);
  margin-bottom: var(--space-md);
}

.footer p, .footer li {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.footer ul {
  list-style: none;
}

.footer ul li {
  margin-bottom: var(--space-sm);
}

.footer a {
  color: rgba(255,255,255,0.7);
}

.footer a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: var(--text-xs);
  opacity: 0.7;
}

/* === Responsive === */
@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-md) 0;
    box-shadow: var(--shadow-md);
    gap: 0;
  }

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

  .nav-links li {
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav-links a {
    display: block;
    padding: var(--space-md) var(--space-lg);
  }

  .nav-links a::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: 380px;
  }

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

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

  .container {
    padding: 0 var(--space-md);
  }
}