:root {
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Light Theme - Updated to match Yongdongxia style */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-card: rgba(22, 27, 34, 0.4);
    --bg-hover: rgba(33, 38, 45, 0.6);
    
    /* Glassmorphism variables - more transparent */
    --glass-bg: rgba(22, 27, 34, 0.3);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-blur: blur(20px);
    
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-tertiary: #6e7681;
    --text-muted: #484f58;
    
    --border-color: #30363d;
    --border-light: #21262d;
    
    /* Coral/Orange-Red primary color from screenshot */
    --accent-primary: #ff6b6b;
    --accent-primary-hover: #ff8585;
    --accent-secondary: #ff8e8e;
    --accent-success: #3fb950;
    --accent-warning: #d29922;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 6px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 150ms ease;
    --transition: 200ms ease;
    --transition-slow: 300ms ease;
}

/* Dark Theme - Same as light since we're using dark by default */
[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-card: rgba(22, 27, 34, 0.8);
    --bg-hover: #21262d;
    
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-tertiary: #6e7681;
    --text-muted: #484f58;
    
    --border-color: #30363d;
    --border-light: #21262d;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.5), 0 1px 2px -1px rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.5);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.6), 0 8px 10px -6px rgb(0 0 0 / 0.6);
}

/* Light Theme - Near white background */
[data-theme="light"] {
    --bg-primary: #fafbfc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f3f5;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-hover: #f1f3f5;
    
    /* Light mode glassmorphism - more transparent */
    --glass-bg: rgba(255, 255, 255, 0.4);
    --glass-border: rgba(255, 255, 255, 0.6);

    --text-primary: #1a1a2e;
    --text-secondary: #4a5568;
    --text-tertiary: #718096;
    --text-muted: #a0aec0;

    --border-color: #e2e8f0;
    --border-light: #edf2f7;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #0d1117 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color var(--transition), color var(--transition);
}

[data-theme="light"] body {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 50%, #fafbfc 100%);
}

/* ========== Navbar ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
    transition: background-color var(--transition), border-color var(--transition);
}

.nav-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 18px;
}

.logo-icon {
    font-size: 24px;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--radius);
    transition: color var(--transition), background-color var(--transition);
}

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

/* WeChat Group Button */
.wechat-group-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, #07c160, #05a050);
    color: white !important;
    border: none;
    cursor: pointer;
    margin-left: 8px;
}

.wechat-group-btn:hover {
    background: linear-gradient(135deg, #08d66c, #06b85a);
    color: white !important;
}

.wechat-group-btn svg {
    flex-shrink: 0;
}

/* Claim Free Token Button */
.claim-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #ff4757, #ff6348);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    animation: pulse 2s infinite;
}

.claim-btn:hover {
    background: linear-gradient(135deg, #ff6348, #ff4757);
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(255, 71, 87, 0.4);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 71, 87, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(255, 71, 87, 0);
    }
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Language Switch */
.lang-switch {
    position: relative;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition);
}

.lang-switch:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-tertiary);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 100px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition);
    z-index: 200;
}

.lang-switch:hover .lang-dropdown,
.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    padding: 8px 12px;
    font-size: 13px;
    cursor: pointer;
    transition: background-color var(--transition);
}

.lang-option:hover,
.lang-option.active {
    background-color: var(--bg-hover);
    color: var(--accent-primary);
}

/* Claim Button - 领取免费额度 */
.claim-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #ff6b6b, #ff5252);
    border: none;
    border-radius: 20px;
    color: white;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    animation: pulse 2s infinite;
}

.claim-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.4);
    background: linear-gradient(135deg, #ff5252, #ff3838);
}

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

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(255, 107, 107, 0);
    }
}

/* Theme Switch */
.theme-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.theme-switch:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-tertiary);
}

.theme-icon {
    position: absolute;
    transition: opacity var(--transition), transform var(--transition);
}

.theme-icon.sun {
    opacity: 1;
    transform: rotate(0deg);
}

.theme-icon.moon {
    opacity: 0;
    transform: rotate(-90deg);
}

[data-theme="dark"] .theme-icon.sun {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme="dark"] .theme-icon.moon {
    opacity: 1;
    transform: rotate(0deg);
}

/* User Avatar */
.user-avatar {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px 4px 4px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition);
}

.user-avatar:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-tertiary);
}

.avatar-placeholder {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 50%;
    color: var(--text-tertiary);
}

.avatar-img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    display: none;
}

.avatar-img.active {
    display: block;
}

.avatar-placeholder.hidden {
    display: none;
}

.plan-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    background: var(--accent-primary);
    color: white;
    border-radius: 10px;
}

.plan-badge[data-plan="free"] {
    background: var(--text-tertiary);
}

.plan-badge[data-plan="standard"] {
    background: var(--accent-success);
}

.plan-badge[data-plan="pro"] {
    background: var(--accent-secondary);
}

.plan-badge[data-plan="ultra"] {
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
}

/* ========== Main Content ========== */
.main-content {
    padding-top: 64px;
    min-height: calc(100vh - 80px);
}

/* ========== Hero Section ========== */
.hero {
    padding: 80px 24px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(36px, 6vw, 56px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.version-info {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* Hero Screenshot */
.hero-screenshot {
    margin-top: 60px;
}

.screenshot-container {
    max-width: 960px;
    margin: 0 auto;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.screenshot-placeholder {
    aspect-ratio: 16/10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    gap: 16px;
}

/* ========== Features Section ========== */
.features {
    padding: 80px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========== Pricing Section ========== */
.pricing-hero {
    padding: 60px 24px 40px;
    text-align: center;
    background: var(--bg-secondary);
}

/* Billing Toggle */
.billing-toggle {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 32px;
    padding: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
}

.toggle-label {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 20px;
    transition: all var(--transition);
}

.toggle-label.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.toggle-switch {
    width: 48px;
    height: 24px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: background-color var(--transition);
}

.toggle-switch.yearly {
    background: var(--accent-primary);
}

.toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform var(--transition);
    box-shadow: var(--shadow-sm);
}

.toggle-switch.yearly .toggle-thumb {
    transform: translateX(24px);
}

.save-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    background: var(--accent-success);
    color: white;
    border-radius: 10px;
}

/* Pricing Cards */
.pricing-cards {
    padding: 40px 24px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.pricing-card {
    position: relative;
    padding: 32px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    background: var(--bg-card);
}

.pricing-card.popular {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 1px var(--accent-primary), var(--shadow-lg);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: var(--accent-primary);
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: 12px;
}

.pricing-header {
    margin-bottom: 20px;
}

.pricing-name {
    font-size: 20px;
    font-weight: 600;
}

.pricing-name-en {
    font-size: 13px;
    color: var(--text-tertiary);
    text-transform: uppercase;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 2px;
    margin-bottom: 8px;
}

.price-symbol {
    font-size: 24px;
    font-weight: 600;
}

.price-value {
    font-size: 48px;
    font-weight: 700;
    line-height: 1;
}

.price-period {
    font-size: 16px;
    color: var(--text-secondary);
}

.pricing-yearly {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.yearly-total {
    font-size: 14px;
    color: var(--text-secondary);
}

.yearly-month {
    font-size: 13px;
    color: var(--accent-success);
    font-weight: 500;
}

.feature-highlight {
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    margin-bottom: 12px;
}

.token-amount {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-primary);
}

.token-unit {
    font-size: 13px;
    color: var(--text-secondary);
    margin-left: 4px;
}

.unit-price {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
}

.feature-list {
    list-style: none;
    margin-top: 20px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.feature-list li svg {
    flex-shrink: 0;
    color: var(--accent-success);
}

/* Pricing Table Section */
.pricing-table-section {
    padding: 40px 24px 80px;
    max-width: 1000px;
    margin: 0 auto;
}

.table-title {
    font-size: 24px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 32px;
}

.pricing-table-wrapper {
    overflow-x: auto;
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.pricing-table th,
.pricing-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.pricing-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-secondary);
}

.pricing-table tr:hover {
    background: var(--bg-hover);
}

.pricing-table tr.highlight {
    background: var(--bg-secondary);
}

.pricing-table tr.highlight td {
    font-weight: 500;
}

/* ========== Pay Section ========== */
.pay-section {
    padding: 60px 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.pay-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

@media (max-width: 768px) {
    .pay-container {
        grid-template-columns: 1fr;
    }
}

.order-card {
    padding: 32px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.order-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
}

.order-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-light);
}

.order-label {
    color: var(--text-secondary);
    font-size: 14px;
}

.order-value {
    font-weight: 500;
}

.order-divider {
    height: 1px;
    background: var(--border-color);
    margin: 16px 0;
}

.order-total {
    border-bottom: none;
}

.order-total .order-label {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.order-price {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-primary);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition);
}

.back-link:hover {
    color: var(--accent-primary);
}

.pay-methods {
    padding: 32px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.pay-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
}

.payment-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.payment-option {
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

.payment-option:hover,
.payment-option.active {
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
}

.payment-radio input {
    display: none;
}

.payment-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.payment-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
}

.payment-icon.wechat {
    background: #07c160;
    color: white;
}

.payment-icon.alipay {
    background: #1677ff;
    color: white;
}

.payment-name {
    font-weight: 500;
}

.qr-section {
    text-align: center;
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    margin-bottom: 24px;
}

.qr-code-mock {
    position: relative;
    display: inline-block;
}

.qr-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 4px;
    font-size: 20px;
}

.qr-tip {
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

.pay-tips {
    font-size: 12px;
    color: var(--text-muted);
}

.pay-tips p {
    margin: 4px 0;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

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

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

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

.btn-outline:hover {
    background: var(--bg-hover);
    border-color: var(--text-secondary);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: var(--radius-md);
}

.btn-full {
    width: 100%;
}

.btn-send {
    padding: 8px 16px;
    font-size: 13px;
    white-space: nowrap;
}

/* ========== Modal ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 1000;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transform: translateY(-20px);
    transition: transform var(--transition);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius);
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-header {
    text-align: center;
    margin-bottom: 24px;
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.modal-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

/* WeChat Modal Styles */
.wechat-modal {
    text-align: center;
}

.wechat-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.wechat-qr-placeholder {
    position: relative;
    width: 180px;
    height: 180px;
    padding: 16px;
    background: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.wechat-qr-placeholder svg {
    width: 100%;
    height: 100%;
}

.wechat-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 8px;
    font-size: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.wechat-tip {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Claim Modal Styles */
.claim-modal {
    text-align: center;
    max-width: 380px;
}

.claim-icon {
    font-size: 64px;
    margin-bottom: 16px;
    animation: bounce 1s ease infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.claim-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.claim-message {
    font-size: 16px;
    color: var(--text-primary);
    line-height: 1.6;
}

.claim-amount {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent-primary);
    margin: 0 4px;
}

.claim-info {
    font-size: 14px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 12px 16px;
    border-radius: var(--radius);
    width: 100%;
}

/* Form */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    transition: all var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.phone-input {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.phone-prefix {
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-right: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.phone-input .form-input {
    border: none;
    background: transparent;
}

.code-input-group {
    display: flex;
    gap: 12px;
}

.code-input-group .form-input {
    flex: 1;
}

/* ========== Footer ========== */
.footer {
    padding: 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.footer-copyright {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* ========== Glassmorphism Effects ========== */

/* Navbar with glass effect */
.navbar {
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .navbar {
    background: rgba(250, 251, 252, 0.85);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

/* Feature cards with glass effect */
.feature-card {
    background: rgba(22, 27, 34, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .feature-card {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    background: rgba(22, 27, 34, 0.6);
    border-color: var(--accent-primary);
}

[data-theme="light"] .feature-card:hover {
    background: rgba(255, 255, 255, 0.85);
}

/* Pricing cards with glass effect */
.pricing-card {
    background: rgba(22, 27, 34, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .pricing-card {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.pricing-card:hover {
    background: rgba(22, 27, 34, 0.6);
}

[data-theme="light"] .pricing-card:hover {
    background: rgba(255, 255, 255, 0.85);
}

.pricing-card.popular {
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px rgba(255, 107, 107, 0.2);
}

/* Modal with glass effect */
.modal {
    background: rgba(22, 27, 34, 0.8);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .modal {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* Order and pay method cards */
.order-card,
.pay-methods {
    background: rgba(22, 27, 34, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .order-card,
[data-theme="light"] .pay-methods {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* Screenshot container with glass effect */
.screenshot-container {
    background: rgba(22, 27, 34, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .screenshot-container {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* Billing toggle with glass effect */
.billing-toggle {
    background: rgba(22, 27, 34, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .billing-toggle {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* Payment option with glass effect */
.payment-option {
    background: rgba(22, 27, 34, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .payment-option {
    background: rgba(255, 255, 255, 0.5);
}

.payment-option:hover,
.payment-option.active {
    background: rgba(22, 27, 34, 0.5);
    border-color: var(--accent-primary);
}

[data-theme="light"] .payment-option:hover,
[data-theme="light"] .payment-option.active {
    background: rgba(255, 255, 255, 0.8);
}

/* QR section with glass effect */
.qr-section {
    background: rgba(22, 27, 34, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .qr-section {
    background: rgba(241, 243, 245, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* User avatar with glass effect */
.user-avatar {
    background: rgba(22, 27, 34, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .user-avatar {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.user-avatar:hover {
    background: rgba(22, 27, 34, 0.7);
}

[data-theme="light"] .user-avatar:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* Feature highlight with glass effect */
.feature-highlight {
    background: rgba(22, 27, 34, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .feature-highlight {
    background: rgba(241, 243, 245, 0.8);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

/* Pricing yearly with glass effect */
.pricing-yearly {
    background: rgba(22, 27, 34, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .pricing-yearly {
    background: rgba(241, 243, 245, 0.8);
}

/* Footer with glass effect */
.footer {
    background: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .footer {
    background: rgba(255, 255, 255, 0.8);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 16px;
    }
    
    .nav-center {
        display: none;
    }
    
    .hero {
        padding: 60px 16px;
    }
    
    .features {
        padding: 60px 16px;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-table-wrapper {
        margin: 0 -16px;
        padding: 0 16px;
    }
}