/* AutoList Token - 大气专业深色风格 CSS */

/* ============ 变量定义 ============ */
:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --bg-card-hover: #475569;
    --bg-input: #0f172a;

    --accent-primary: #2563eb;
    --accent-secondary: #0ea5e9;
    --accent-tertiary: #38bdf8;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;

    --border-color: rgba(37, 99, 235, 0.3);
    --border-light: rgba(148, 163, 184, 0.2);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ============ 基础样式 ============ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* ============ 提示框和链接 ============ */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.alert-info {
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.3);
    color: var(--text-primary);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--text-primary);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--text-primary);
}

.alert a {
    color: var(--accent-secondary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.alert a:hover {
    color: var(--accent-primary);
}

/* ============ 背景特效 ============ */
.bg-grid {
    display: none;
}

.bg-glow {
    display: none;
}

/* ============ 布局容器 ============ */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.container-sm {
    max-width: 480px;
}

.container-md {
    max-width: 800px;
}

/* ============ 导航栏 ============ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

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

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

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

.nav-user-balance {
    font-weight: 600;
    color: var(--accent-success);
    padding: 8px 16px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-md);
}

/* ============ 主内容区 ============ */
.main {
    padding-top: 100px;
    padding-bottom: 4rem;
    min-height: 100vh;
}

/* ============ 按钮样式 ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

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

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

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ============ 卡片样式 ============ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.card-static {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

/* ============ 表单样式 ============ */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23606070' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 48px;
}

.form-hint {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.form-error {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--accent-danger);
}

/* ============ Hero 区域 ============ */
.hero {
    padding: 6rem 0;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--accent-secondary);
    margin-bottom: 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-title .gradient {
    color: var(--accent-secondary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

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

/* ============ 模型卡片 ============ */
.model-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.model-card:hover {
    border-color: var(--border-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.model-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    background: rgba(37, 99, 235, 0.15);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.model-info {
    flex: 1;
    min-width: 0;
}

.model-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.model-provider {
    font-size: 0.85rem;
    color: var(--accent-secondary);
    margin-bottom: 8px;
}

.model-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.model-pricing {
    display: flex;
    gap: 1.5rem;
    margin-top: 12px;
    font-size: 0.85rem;
}

.model-price {
    color: var(--text-tertiary);
}

.model-price strong {
    color: var(--text-primary);
    font-weight: 600;
}

.model-category {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 100px;
    margin-top: 8px;
}

.model-category.international {
    background: rgba(14, 165, 233, 0.15);
    color: var(--accent-secondary);
}

.model-category.domestic {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-success);
}

/* ============ 价格表格 ============ */
.pricing-table {
    width: 100%;
    border-collapse: collapse;
}

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

.pricing-table th {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* ============ 统计数据 ============ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.stat-icon.primary { background: rgba(37, 99, 235, 0.15); }
.stat-icon.success { background: rgba(16, 185, 129, 0.15); }
.stat-icon.warning { background: rgba(245, 158, 11, 0.15); }
.stat-icon.danger { background: rgba(239, 68, 68, 0.15); }

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ============ API Key 展示 ============ */
.api-key-box {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
}

.api-key-value {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent-secondary);
    word-break: break-all;
}

.api-key-copy {
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.api-key-copy:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

/* ============ 表格 ============ */
.table-wrapper {
    overflow-x: auto;
}

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

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

.table th {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.table tbody tr {
    transition: background 0.3s ease;
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* ============ 状态徽章 ============ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 100px;
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-danger);
}

/* ============ 分页 ============ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 2rem;
}

.pagination-btn {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.pagination-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

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

/* ============ 模态框 ============ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.modal {
    width: 100%;
    max-width: 500px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* ============ Toast 通知 ============ */
.toast-container {
    position: fixed;
    top: 100px;
    right: 2rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success { border-left: 4px solid var(--accent-success); }
.toast.error { border-left: 4px solid var(--accent-danger); }
.toast.warning { border-left: 4px solid var(--accent-warning); }

/* ============ 认证页面 ============ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo {
    width: 64px;
    height: 64px;
    background: var(--accent-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.auth-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ============ 仪表盘 ============ */
.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.dashboard-title {
    font-size: 1.75rem;
    font-weight: 700;
}

.balance-card {
    background: var(--accent-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    color: white;
}

.balance-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 8px;
}

.balance-value {
    font-size: 2.5rem;
    font-weight: 700;
}

.balance-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.balance-btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.balance-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ============ 侧边栏 ============ */
.sidebar {
    width: 260px;
    background: var(--bg-card);
    border-right: 1px solid var(--border-light);
    min-height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    padding-top: 70px;
}

.sidebar-nav {
    padding: 1.5rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    margin-bottom: 4px;
}

.sidebar-nav a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.sidebar-nav a.active {
    background: rgba(37, 99, 235, 0.15);
    color: var(--accent-secondary);
}

.sidebar-nav svg {
    width: 20px;
    height: 20px;
}

.main-content {
    margin-left: 260px;
    padding-top: 70px;
    min-height: 100vh;
}

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}

/* ============ 管理员后台 ============ */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-light);
    padding: 1.5rem 0;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
}

.admin-sidebar-header {
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 1rem;
}

.admin-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.admin-logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.admin-nav {
    padding: 0 1rem;
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    font-weight: 500;
}

.admin-nav a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.admin-nav a.active {
    background: rgba(37, 99, 235, 0.15);
    color: var(--accent-secondary);
}

.admin-nav svg {
    width: 20px;
    height: 20px;
}

.admin-content {
    flex: 1;
    margin-left: 260px;
    padding: 2rem;
    min-height: 100vh;
}

.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.admin-title {
    font-size: 1.5rem;
    font-weight: 700;
}

/* ============ 空状态 ============ */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-state-desc {
    margin-bottom: 1.5rem;
}

/* ============ 加载状态 ============ */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============ 动画 ============ */
.fade-in {
    animation: fadeIn 0.5s ease;
}

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

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

/* ============ 响应式 ============ */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .navbar {
        height: 60px;
    }

    .logo-text {
        display: none;
    }

    .nav-links {
        display: none;
    }

    .nav-auth,
    .nav-user {
        gap: 0.5rem;
    }

    .nav-user-balance {
        display: none;
    }

    .btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .hero {
        padding: 4rem 0;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .hero-actions {
        flex-direction: column;
        gap: 0.75rem;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }

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

    .auth-card {
        padding: 2rem;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-content {
        padding: 1rem;
    }
}

/* ============ 工具类 ============ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--accent-primary); }
.text-success { color: var(--accent-success); }
.text-danger { color: var(--accent-danger); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

.w-full { width: 100%; }
.hidden { display: none; }

/* ============ 新的模型展示样式 ============ */
.model-tabs {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.model-tab {
    padding: 0.6rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 100px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.model-tab:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.model-tab.active {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.model-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

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

.model-card-new {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.3s ease;
}

.model-card-new:hover {
    transform: translateY(-6px);
    border-color: var(--border-color);
    box-shadow: var(--shadow-lg);
}

.model-card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(102, 126, 234, 0.02));
}

.model-card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(102, 126, 234, 0.1));
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.model-card-info {
    flex: 1;
}

.model-card-name {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.model-card-provider {
    font-size: 0.85rem;
    color: var(--accent-secondary);
}

.model-card-category {
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
}

.model-card-category.international {
    background: rgba(14, 165, 233, 0.15);
    color: var(--accent-secondary);
}

.model-card-category.domestic {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-success);
}

.model-card-body {
    padding: 1.5rem;
}

.model-card-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.model-card-pricing {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.price-item {
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
}

.price-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.price-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.price-unit {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.model-card-estimate {
    padding: 0.75rem;
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-md);
    color: var(--accent-success);
    font-size: 0.85rem;
    text-align: center;
    font-weight: 500;
}

.model-card-footer {
    display: flex;
    gap: 0.75rem;
    padding: 0 1.5rem 1.5rem;
}

.model-card-footer .btn {
    flex: 1;
    font-size: 0.85rem;
    padding: 0.75rem;
}