/* 
   pricing.css - Premium UI for AI Pricing Guide
*/

:root {
    --bg-primary: #0a0a0c;
    --bg-secondary: #121216;
    --text-primary: #f8f9fa;
    --text-secondary: #a1a1aa;
    --accent-color: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.4);
    --gold-accent: #fbbf24;
    --border-color: rgba(255, 255, 255, 0.08);
    --card-bg: rgba(20, 20, 24, 0.6);
    --glass-bg: rgba(18, 18, 22, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.08), transparent 25%);
}

/* Navbar */
.navbar {
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Hero Section */
.hero-section {
    padding: 5rem 2rem 3rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #fff, #a1a1aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Main Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem 6rem;
    flex: 1;
    width: 100%;
}

/* Tabs */
.tabs-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.tab-btn.active {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    box-shadow: 0 0 20px var(--accent-glow);
}

/* Secondary Tabs (Plans) */
.plans-tabs {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    background: rgba(0,0,0,0.2);
    padding: 0.25rem;
    border-radius: 12px;
    width: max-content;
}

.plan-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.plan-btn:hover {
    color: var(--text-primary);
}

.plan-btn.active {
    background: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Lowest Price Highlight Area */
.lowest-price-banner {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 10px 30px -10px rgba(245, 158, 11, 0.15);
}

.lowest-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.lowest-label {
    color: var(--gold-accent);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lowest-country {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.lowest-price {
    text-align: right;
}

.lowest-price .cny {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gold-accent);
    line-height: 1;
}

.lowest-price .local {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-top: 0.5rem;
}

/* Pricing Card (Table Container) */
.pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
    animation: slideUp 0.5s ease forwards;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card-header {
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.card-title-group {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background-color: #fff;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon img {
    max-width: 100%;
    max-height: 100%;
}

.card-title h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.card-title p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Table Styles */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th {
    padding: 1.25rem 2rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1.25rem 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    color: var(--text-primary);
    font-size: 1rem;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background-color: rgba(255,255,255,0.02);
}

.rank-col {
    color: var(--text-secondary);
    font-weight: 600;
    width: 80px;
}

.top-rank {
    color: var(--gold-accent);
}

.country-col {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.flag {
    font-size: 1.5rem;
}

.price-cny {
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
}

.original-price {
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: block;
    margin-top: 0.2rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .hero-content h1 { font-size: 2.5rem; }
    .container { padding: 0 1rem 4rem; }
    .lowest-price-banner { flex-direction: column; align-items: flex-start; gap: 1.5rem; padding: 1.5rem; }
    .lowest-price { text-align: left; }
    th, td { padding: 1rem; }
    .card-header { flex-direction: column; gap: 1rem; }
}