/* AIA Copilot - Static Site Styles */

/* ===== CSS Variables ===== */
:root {
  --primary: #0066cc;
  --primary-dark: #004a99;
  --primary-light: #e6f0fa;
  --accent: #00c2a8;
  --dark: #1a1a2e;
  --gray-900: #2d2d44;
  --gray-700: #4a4a68;
  --gray-500: #7c7c9a;
  --gray-300: #c4c4d4;
  --gray-100: #f4f4f8;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-700);
  background: var(--white);
}

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

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--dark);
  font-family: 'Poppins', 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(3rem, 6vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(2.25rem, 4.5vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
}

.text-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center { text-align: center; }
.text-muted { color: var(--gray-500); }

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

.section-alt {
  background: var(--gray-100);
}

.section-dark {
  background: var(--dark);
  color: var(--white);
}

.section-dark h2,
.section-dark h3 {
  color: var(--white);
}

.section-dark p {
  color: var(--gray-300);
}

.section-sm {
  padding: 3rem 0;
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ===== Header & Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-100);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

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

.nav-links a {
  color: var(--gray-700);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

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

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

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

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

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

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

.btn-lg {
  padding: 1.125rem 3rem;
  font-size: 1rem;
}

/* ===== Hero Section ===== */
.hero {
  padding: 12rem 0 8rem;
  background: linear-gradient(135deg, var(--dark) 0%, var(--gray-900) 100%);
  position: relative;
  overflow: hidden;
  color: var(--white);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(0, 194, 168, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0, 102, 204, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: 0.625rem 1.25rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero h1 {
  margin-bottom: 1.5rem;
  color: var(--white);
}

.hero p {
  font-size: 1.375rem;
  color: var(--gray-300);
  margin-bottom: 2.5rem;
  max-width: 600px;
  line-height: 1.7;
}

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

/* ===== Cards ===== */
.card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary);
  font-size: 1.5rem;
}

.card h3 {
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--gray-500);
  margin-bottom: 0;
}

/* ===== Feature Cards (Services) ===== */
.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 72px;
  height: 72px;
  background: var(--gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--white);
  font-size: 2rem;
}

/* ===== About Section ===== */
.about {
  background: var(--gray-100);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: center;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-content h2 {
  margin-bottom: 1.5rem;
}

.about-content p {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}

.about-stats {
  display: flex;
  gap: 3rem;
  margin-top: 2rem;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-top: 0.5rem;
}

/* ===== Blog Cards ===== */
.blog-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}

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

.blog-card-image {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-100);
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.blog-card:hover .blog-card-image img {
  transform: scale(1.05);
}

.blog-card-content {
  padding: 1.5rem;
}

.blog-card-meta {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: 0.75rem;
}

.blog-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.blog-card h3 a {
  color: var(--dark);
}

.blog-card h3 a:hover {
  color: var(--primary);
}

.blog-card p {
  color: var(--gray-500);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ===== Schedule/Calendar ===== */
.calendar-wrapper {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-100);
}

.calendar-wrapper iframe {
  width: 100%;
  height: 600px;
  border: none;
}

/* ===== Training Section ===== */
.training-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-100);
}

.training-card-header {
  background: var(--gradient);
  padding: 2rem;
  color: var(--white);
}

.training-card-body {
  padding: 2rem;
}

.training-card ul {
  list-style: none;
  margin-bottom: 1.5rem;
}

.training-card li {
  padding: 0.75rem 0;
  padding-left: 1.75rem;
  position: relative;
  border-bottom: 1px solid var(--gray-100);
}

.training-card li:last-child {
  border-bottom: none;
}

.training-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

/* ===== CTA Section ===== */
.cta {
  background: var(--dark);
  color: var(--white);
  text-align: center;
}

.cta h2 {
  color: var(--white);
  margin-bottom: 1rem;
}

.cta p {
  color: var(--gray-300);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* ===== Footer ===== */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9375rem;
}

.footer h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--gray-300);
  font-size: 0.9375rem;
}

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

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: var(--gray-700);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--gray-700);
  text-align: center;
  font-size: 0.875rem;
}

/* ===== Article Page ===== */
.article-header {
  padding: 8rem 0 4rem;
  background: var(--primary-light);
}

.article-meta {
  color: var(--gray-500);
  margin-bottom: 1rem;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.article-content h2 {
  margin-top: 2.5rem;
}

.article-content p {
  font-size: 1.125rem;
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin: 1.5rem 0;
  padding-left: 1.5rem;
}

.article-content li {
  margin-bottom: 0.75rem;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero {
    padding: 8rem 0 4rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .about-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

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

  .section {
    padding: 3rem 0;
  }
}