/* ==================== TAM AIR Club - Main Styles ==================== */

/* ==================== CSS Custom Properties (Themes) ==================== */

/* Light Theme (default) */
:root,
[data-theme="light"] {
  --primary: #22c55e;
  --primary-dark: #16a34a;
  --primary-light: #86efac;
  --background: #ffffff;
  --background-alt: #f8fafc;
  --surface: #f1f5f9;
  --surface-hover: #e2e8f0;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --nav-bg: rgba(255, 255, 255, 0.95);
  --nav-border: rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --hero-overlay: rgba(0, 0, 0, 0.5);
  --card-bg: #ffffff;
  --input-bg: #ffffff;
  --footer-bg: #1e293b;
  --footer-text: #e2e8f0;
}

/* Dark Theme */
[data-theme="dark"] {
  --primary: #22c55e;
  --primary-dark: #16a34a;
  --primary-light: #4ade80;
  --background: #0f172a;
  --background-alt: #1e293b;
  --surface: #1e293b;
  --surface-hover: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #334155;
  --border-light: #1e293b;
  --nav-bg: rgba(15, 23, 42, 0.95);
  --nav-border: rgba(255, 255, 255, 0.05);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  --hero-overlay: rgba(0, 0, 0, 0.6);
  --card-bg: #1e293b;
  --input-bg: #0f172a;
  --footer-bg: #0f172a;
  --footer-text: #94a3b8;
}

/* ==================== Base Reset ==================== */

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ==================== Typography ==================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

.text-center { text-align: center; }
.text-primary { color: var(--primary) !important; }

/* ==================== Layout ==================== */

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

.section {
  padding: 4rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
}

/* ==================== Navigation ==================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--nav-border);
  transition: all 0.3s ease;
}

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

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
  gap: 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
  cursor: pointer;
  position: relative;
  z-index: 10;
  flex-shrink: 0;
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-logo img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: nowrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 1.05rem;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: var(--surface);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--surface);
  border-radius: 0.5rem;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background: var(--surface-hover);
  color: var(--primary);
}

.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; }

[data-theme="dark"] .theme-toggle .sun-icon { display: block; }
[data-theme="dark"] .theme-toggle .moon-icon { display: none; }

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ==================== Buttons ==================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 14px rgba(34, 197, 94, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.4);
  color: white;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

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

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

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

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-full {
  width: 100%;
}

/* ==================== Cards ==================== */

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

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

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 0.75rem;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ==================== Hero Section ==================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: 2rem;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto 2rem;
  border-radius: 50%;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.hero h1 {
  color: white;
  margin-bottom: 1rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-tagline {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
}

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

/* ==================== Grid Layouts ==================== */

.grid {
  display: grid;
  gap: 1.5rem;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ==================== News/Updates Section ==================== */

.news-card {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--surface);
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.news-card:hover {
  border-color: var(--primary);
}

.news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  padding: 0.5rem;
  background: var(--primary);
  color: white;
  border-radius: 0.5rem;
  font-weight: 600;
}

.news-date .month {
  font-size: 0.75rem;
  text-transform: uppercase;
}

.news-date .day {
  font-size: 1.5rem;
  line-height: 1;
}

.news-content h4 {
  margin-bottom: 0.25rem;
}

.news-content p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ==================== Mission Section ==================== */

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

.mission-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.mission-text h2 {
  margin-bottom: 1.5rem;
}

.mission-text p {
  font-size: 1.1rem;
  line-height: 1.8;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Video Thumbnail Link */
.video-thumbnail {
  position: relative;
  display: block;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transition: all 0.3s ease;
  aspect-ratio: 16 / 9;
  background: #000;
}

.video-thumbnail:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-thumbnail .video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.2) 50%, rgba(0,0,0,0.1) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  transition: all 0.3s ease;
}

.video-thumbnail:hover .video-overlay {
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,0.2) 100%);
}

.video-thumbnail .play-button {
  width: 80px;
  height: 80px;
  background: #ff0000;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 10px 40px rgba(255, 0, 0, 0.4);
}

.video-thumbnail:hover .play-button {
  transform: scale(1.1);
  box-shadow: 0 15px 50px rgba(255, 0, 0, 0.5);
}

.video-thumbnail .play-button i {
  color: white;
  font-size: 2.5rem;
}

.video-thumbnail .watch-text {
  color: white;
  font-size: 1rem;
  font-weight: 600;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.video-thumbnail:hover .watch-text {
  opacity: 1;
  transform: translateY(0);
}

/* ==================== Social Section ==================== */

.social-section {
  text-align: center;
  padding: 3rem 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.social-section h3 {
  color: white;
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border-radius: 2rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-link:hover {
  background: white;
  color: var(--primary);
}

.social-link i {
  font-size: 1.25rem;
}

/* ==================== Donate/Support Section ==================== */

.donate-section {
  text-align: center;
  padding: 4rem 0;
  background: var(--surface);
}

.donate-section h2 {
  margin-bottom: 1rem;
}

.donate-section p {
  max-width: 600px;
  margin: 0 auto 2rem;
}

.donate-amount {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background: var(--primary);
  color: white;
  border-radius: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

/* ==================== Team Section ==================== */

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.team-card {
  text-align: center;
  padding: 2rem;
}

.team-card img {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto 1rem;
  border: 4px solid var(--primary);
}

.team-card h4 {
  margin-bottom: 0.25rem;
}

.team-card .role {
  color: var(--primary);
  font-weight: 500;
  font-size: 0.9rem;
}

/* ==================== Services/Features Grid ==================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
}

.feature-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 1rem;
  font-size: 2rem;
  color: white;
}

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

/* ==================== Events Timeline ==================== */

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding: 2rem;
  width: 50%;
}

.timeline-item:nth-child(odd) {
  padding-right: 3rem;
  text-align: right;
}

.timeline-item:nth-child(even) {
  margin-left: 50%;
  padding-left: 3rem;
}

.timeline-dot {
  position: absolute;
  top: 2.5rem;
  width: 16px;
  height: 16px;
  background: var(--primary);
  border-radius: 50%;
  border: 3px solid var(--background);
}

.timeline-item:nth-child(odd) .timeline-dot {
  right: -8px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -8px;
}

.timeline-date {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* ==================== Contact Form ==================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info {
  padding: 2rem;
}

.contact-info h3 {
  margin-bottom: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-item i {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border-radius: 0.5rem;
  color: var(--primary);
}

.contact-form {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-status {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.form-status.success {
  background: rgba(34, 197, 94, 0.1);
  color: var(--primary);
  border: 1px solid var(--primary);
}

.form-status.error {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid #ef4444;
}

/* ==================== Footer ==================== */

.footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 4rem 0 2rem;
}

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

.footer-brand {
  max-width: 300px;
}

.footer-brand img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--footer-text);
  opacity: 0.8;
}

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

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--footer-text);
  opacity: 0.8;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.footer-links a:hover {
  color: var(--primary);
  opacity: 1;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0.5rem;
  color: white;
  transition: all 0.2s ease;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.875rem;
  opacity: 0.7;
}

/* ==================== Utilities ==================== */

.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 !important; }
.visible { display: block !important; }

/* ==================== Page Header (for inner pages) ==================== */

.page-header {
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, var(--surface), var(--background-alt));
  text-align: center;
}

.page-header h1 {
  margin-bottom: 0.5rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

/* ==================== Animations ==================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }