/* Shared Styles for AI Policy Hub */
/* CSS Variables */
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --secondary: #10b981;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-light: #f9fafb;
  --border: #e5e7eb;
  --success: #059669;
  --warning: #f59e0b;
  --learning-com: #00a651;
  --vh: 1vh;
}

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

html {
  height: -webkit-fill-available;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  min-height: -webkit-fill-available;
}

/* Typography */
h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text);
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s;
}

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

/* Header */
header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
  box-sizing: border-box;
}

/* Buttons */
.btn {
  padding: 0.75rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  display: inline-block;
  cursor: pointer;
  border: none;
  font-size: 1rem;
  will-change: transform;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

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

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

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

.btn-success:hover {
  background: #047857;
}

/* Cards */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  transition: all 0.3s;
  cursor: pointer;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--primary);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  color: white;
}

/* Grid */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Footer */
footer {
  background: var(--text);
  color: white;
  padding: 3rem 2rem 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  margin-bottom: 1rem;
  color: white;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  display: block;
  margin-bottom: 0.5rem;
  transition: color 0.3s;
}

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

.footer-strip {
  background: var(--text);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1rem 0;
}

.footer-strip-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-strip a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  transition: all 0.3s;
}

.footer-strip a:hover {
  color: white;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0.25rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
}

/* Badge */
.badge {
  background: var(--primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success {
  background: var(--success);
}

.badge-learning {
  background: var(--learning-com);
}

/* Alert */
.alert {
  background: linear-gradient(to right, rgba(37, 99, 235, 0.1), rgba(37, 99, 235, 0.05));
  border-left: 4px solid var(--primary);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  border-radius: 0.5rem;
}

.alert-title {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.alert-content {
  color: var(--text-light);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.mobile-menu span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text);
  margin: 5px 0;
  transition: 0.3s;
}

.mobile-menu.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1rem 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.breadcrumbs a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.breadcrumbs span {
  color: var(--text-light);
  margin: 0 0.5rem;
}

/* Mobile Styles */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  nav {
    padding: 1rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    gap: 0.5rem;
  }

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

  .mobile-menu {
    display: block;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 1rem;
  }

  .footer-strip-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden {
  display: none;
}

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

button:focus,
.btn:focus {
  outline-offset: 4px;
}

/* Print Styles */
@media print {
  .mobile-menu,
  .nav-links,
  footer,
  .btn {
    display: none !important;
  }
}