@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

:root {
  --primary: #f59e0b;
  --primary-dark: #d97706;
  --primary-light: #fbbf24;
  --secondary: #1f2937;
  --secondary-light: #374151;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --bg-dark: #111827;
  --bg-darker: #0f172a;
  --text-light: #f9fafb;
  --text-gray: #9ca3af;
  --border: #374151;
  --card-bg: #1f2937;
  --card-hover: #374151;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
  color: var(--text-light);
  min-height: 100vh;
  line-height: 1.5;
}

.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.auth-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
  animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.auth-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px;
  max-width: 440px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  position: relative;
  z-index: 1;
  backdrop-filter: blur(10px);
}

.logo {
  text-align: center;
  margin-bottom: 32px;
}

.logo h1 {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.logo p {
  color: var(--text-gray);
  font-size: 14px;
}

.form-group {
  margin-bottom: 24px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  font-size: 14px;
  color: var(--text-light);
}

input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-light);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s;
}

input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
}

.btn {
  width: 100%;
  padding: 14px 24px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
  border-radius: 8px;
  color: white;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.3s;
  font-family: inherit;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--secondary-light);
  box-shadow: none;
}

.btn-secondary:hover {
  background: var(--card-hover);
  box-shadow: none;
}

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}

.success-message {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}

.toggle-auth {
  text-align: center;
  margin-top: 24px;
  color: var(--text-gray);
  font-size: 14px;
}

.toggle-auth a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s;
}

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

.navbar {
  background: rgba(31, 41, 55, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 24px;
}

.balance {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.1);
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.balance-icon {
  font-size: 20px;
}

.balance-amount {
  font-weight: 700;
  font-size: 16px;
  color: var(--primary);
}

.username {
  color: var(--text-gray);
  font-size: 14px;
}

.btn-logout {
  padding: 8px 16px;
  background: var(--secondary-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-light);
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-logout:hover {
  background: var(--card-hover);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 48px 24px;
}

.hero {
  text-align: center;
  margin-bottom: 64px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero p {
  font-size: 20px;
  color: var(--text-gray);
  line-height: 1.5;
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}

.game-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
  transform: scaleX(0);
  transition: transform 0.3s;
}

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

.game-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  border-color: var(--primary);
}

.game-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.game-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.game-card p {
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.5;
}

.game-stats {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.stat {
  flex: 1;
}

.stat-label {
  font-size: 12px;
  color: var(--text-gray);
  margin-bottom: 4px;
}

.stat-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

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

  .nav-container {
    flex-direction: column;
    gap: 16px;
  }

  .auth-card {
    padding: 32px 24px;
  }
}

.loading {
  text-align: center;
  padding: 100px 24px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}