/* ===================================================================
   RESET AND BASE STYLES
   =================================================================== */

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

:root {
  --bg-primary: #f8fafc;
  --bg-secondary: white;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --border-color: #e2e8f0;
  --shadow-sm: rgba(0, 0, 0, 0.1);
  --shadow-md: rgba(0, 0, 0, 0.15);
}

html.dark,
body.dark {
  --bg-primary: #1e3a5f;
  --bg-secondary: #2d4a6f;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --border-color: #3d5a7f;
  --shadow-sm: rgba(0, 0, 0, 0.3);
  --shadow-md: rgba(0, 0, 0, 0.5);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===================================================================
   HEADER AND NAVIGATION
   =================================================================== */

.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px var(--shadow-sm);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

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

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: #3b82f6;
}

.theme-toggle-btn {
  background: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.6rem 0.8rem;
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--duration-slow) ease, border-color var(--duration-slow) ease, color var(--duration-slow) ease, transform var(--duration-slow) ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 1rem;
}

.theme-toggle-btn:hover {
  background: var(--bg-primary);
  border-color: #3b82f6;
  color: #3b82f6;
  transform: rotate(15deg);
}

.theme-toggle-btn i {
  transition: transform 0.3s ease;
}

.sign-in-btn {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
  font-size: 0.9rem;
}

.sign-in-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.4);
}

/* ===================================================================
   MAIN CONTENT AND HERO SECTION
   =================================================================== */

.main {
  padding: 4rem 0;
  text-align: center;
  background: var(--bg-secondary);
  transition: background-color 0.3s ease;
}

.hero {
  margin-bottom: 4rem;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* ===================================================================
   BUTTONS AND CALL-TO-ACTION ELEMENTS
   =================================================================== */

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

.btn-primary {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.4);
}

.btn-tertiary {
  background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 15px rgba(96, 165, 250, 0.3);
}

.btn-tertiary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(96, 165, 250, 0.4);
}

/* ===================================================================
   CONTENT AREAS AND SECTIONS
   =================================================================== */

.content-area {
  background: var(--bg-primary);
  padding: 3rem 2rem 2rem;
  transition: background-color 0.3s ease;
}

.section {
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: 3rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 20px var(--shadow-md);
  border: 1px solid var(--border-color);
  transition: background-color var(--duration-slow) ease, border-color var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
}

.section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ===================================================================
   PLANS AND MEMBERSHIP TIERS
   =================================================================== */

/* Plans Section Toggle */
.plans-section {
  display: none !important;
  animation: slideDown 0.3s ease-out;
}

.plans-section.show {
  display: block !important;
}

.show-plans-btn {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.show-plans-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.4);
}

/* Tiers Grid Layout */
.tiers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.tier-card {
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  transition: transform var(--duration-slow) ease, border-color var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  position: relative;
  overflow: hidden;
}

.tier-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.tier-card:hover {
  transform: translateY(-5px);
  border-color: #3b82f6;
  box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.tier-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.tier-price {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.tier-features {
  list-style: none;
  margin-bottom: 2rem;
}

.tier-features li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
}

.tier-features li:before {
  content: "✓";
  color: #10b981;
  font-weight: bold;
  margin-right: 0.75rem;
  font-size: 1.1rem;
}

.tier-btn {
  width: 100%;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  padding: 1rem;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.tier-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
}

/* ===================================================================
   SUPPORT GRID AND CARDS
   =================================================================== */

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.support-card {
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  transition: transform var(--duration-slow) ease, border-color var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  position: relative;
  overflow: hidden;
}

.support-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.support-card:hover {
  transform: translateY(-5px);
  border-color: #3b82f6;
  box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.support-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: white;
  font-size: 1.5rem;
}

.support-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.support-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.support-btn {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--duration-slow) ease, box-shadow var(--duration-slow) ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.support-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.3);
}