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

/* Force light mode */
:root {
  color-scheme: light only;

  /* 品牌主色 */
  --color-primary: #0066cc;
  --color-primary-dark: #0052a3;
  --color-primary-light: #f0f7ff;

  /* 導航/深色區塊 */
  --color-nav-bg: #003366;

  /* 背景色 */
  --color-bg: #f5f5f5;
  --color-bg-card: #fff;

  /* 文字色 */
  --color-text: #333;
  --color-text-secondary: #666;
  --color-text-muted: #999;

  /* 狀態色 */
  --color-success: #155724;
  --color-success-bg: #d4edda;
  --color-warning: #856404;
  --color-warning-bg: #fff3cd;
  --color-danger: #721c24;
  --color-danger-bg: #f8d7da;
  --color-info: #004085;
  --color-info-bg: #cce5ff;

  /* 邊框 */
  --color-border: #ddd;
  --color-border-light: #eee;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a:hover {
  text-decoration: underline;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 2rem;
  background: var(--color-nav-bg);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.nav-brand a {
  font-size: 1.25rem;
  font-weight: bold;
  color: #fff;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-links a {
  color: #a0a0a0;
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #fff;
  text-decoration: none;
}

.nav-links .btn-primary {
  color: #fff;
  background: var(--color-primary);
}

.nav-links .btn-primary:hover {
  background: var(--color-primary-dark);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  border-radius: 4px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

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

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

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

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

.btn-block {
  display: block;
  width: 100%;
  text-align: center;
}

/* Main Content */
.main-content {
  min-height: calc(100vh - 140px);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-nav-bg) 100%);
  color: #fff;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.hero .tagline {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.hero .subtitle {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  opacity: 0.8;
}

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

.hero .btn-primary {
  background: #fff;
  color: var(--color-primary);
}

.hero .btn-secondary {
  background: transparent;
  border-color: #fff;
  color: #fff;
}

.hero .btn-secondary:hover {
  background: rgba(255,255,255,0.1);
}

/* Features */
.features {
  display: flex;
  gap: 2rem;
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}

.feature {
  flex: 1;
  min-width: 250px;
  max-width: 350px;
  background: var(--color-bg-card);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.feature h3 {
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

/* Platforms */
.platforms {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--color-bg-card);
}

.platforms h2 {
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.platform-list {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.platform {
  padding: 0.5rem 1rem;
  background: #f0f0f0;
  border-radius: 20px;
  color: var(--color-text-secondary);
}

.platform.active {
  background: var(--color-primary);
  color: #fff;
}

/* Login */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 60vh;
  padding: 2rem;
}

.login-box {
  background: var(--color-bg-card);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 400px;
}

.login-box h2 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.alert-error {
  background: #fee2e2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.login-footer {
  text-align: center;
  margin-top: 1.5rem;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* Dashboard */
.dashboard {
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.dashboard-header {
  margin-bottom: 2rem;
}

.dashboard-header h1 {
  color: var(--color-text);
}

.dashboard-header p {
  color: var(--color-text-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--color-bg-card);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.stat-card h3 {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.stat-number {
  font-size: 2rem;
  font-weight: bold;
  color: var(--color-primary);
}

.panel {
  background: var(--color-bg-card);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.panel h2 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
  color: var(--color-text);
}

.orders-table {
  width: 100%;
  border-collapse: collapse;
}

.orders-table th,
.orders-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.orders-table th {
  color: var(--color-text-secondary);
  font-weight: 500;
}

.orders-table .empty {
  text-align: center;
  color: var(--color-text-muted);
  padding: 2rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 1.5rem;
  background: var(--color-nav-bg);
  color: #fff;
}

/* Pricing */
.pricing {
  display: flex;
  justify-content: center;
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-bg-card);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
}

.pricing-card h2 {
  text-align: center;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.pricing-price {
  text-align: center;
  margin-bottom: 2rem;
}

.pricing-amount {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--color-primary);
}

.pricing-period {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

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

.pricing-features li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
}

.pricing-features li::before {
  content: "\2713";
  color: var(--color-primary);
  font-weight: bold;
  margin-right: 0.5rem;
}

/* Error Page */
.error-container {
  text-align: center;
  padding: 4rem 2rem;
}

.error-container h1 {
  font-size: 4rem;
  color: var(--color-primary);
}