/**
 * 凌度AI中转站 - 全局样式
 */

:root {
    --lingdu-primary: #5b5bd6;
    --lingdu-primary-dark: #3f3fb8;
    --lingdu-accent: #8b5cf6;
    --lingdu-dark: #1a1a2e;
    --lingdu-muted: #6b7280;
    --lingdu-bg: #f5f6fa;
    --lingdu-border: #e8e9f0;
    --lingdu-radius: 14px;
    --lingdu-shadow: 0 4px 20px rgba(91, 91, 214, .08);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--lingdu-bg);
    color: #1f2937;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; }

/* ---------- 按钮 ---------- */
.btn-primary {
    background: linear-gradient(135deg, var(--lingdu-primary), var(--lingdu-accent));
    border: none;
    box-shadow: 0 4px 14px rgba(91, 91, 214, .28);
}
.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, var(--lingdu-primary-dark), var(--lingdu-primary));
    box-shadow: 0 6px 18px rgba(91, 91, 214, .36);
}
.btn-outline-primary {
    border-color: var(--lingdu-primary);
    color: var(--lingdu-primary);
}
.btn-outline-primary:hover { background: var(--lingdu-primary); border-color: var(--lingdu-primary); }

.text-brand { color: var(--lingdu-primary) !important; }
.bg-brand { background: linear-gradient(135deg, var(--lingdu-primary), var(--lingdu-accent)) !important; }

/* ---------- 卡片 ---------- */
.card {
    border: 1px solid var(--lingdu-border);
    border-radius: var(--lingdu-radius);
    box-shadow: var(--lingdu-shadow);
}
.card-title { font-weight: 600; }

.stat-card {
    border: 1px solid var(--lingdu-border);
    border-radius: var(--lingdu-radius);
    background: #fff;
    padding: 20px;
    transition: transform .18s, box-shadow .18s;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(91,91,214,.14); }
.stat-card .stat-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; color: #fff;
}
.stat-card .stat-value { font-size: 26px; font-weight: 700; line-height: 1.2; }
.stat-card .stat-label { color: var(--lingdu-muted); font-size: 13px; }

/* ---------- 顶部导航 ---------- */
.navbar-brand { font-weight: 700; letter-spacing: .5px; }
.navbar-dark .navbar-nav .nav-link { color: rgba(255,255,255,.86); }
.navbar-dark .navbar-nav .nav-link:hover { color: #fff; }
.site-nav {
    background: linear-gradient(135deg, var(--lingdu-primary), var(--lingdu-accent));
    box-shadow: 0 2px 16px rgba(91,91,214,.24);
}
.site-nav .nav-link { color: rgba(255,255,255,.9) !important; font-weight: 500; padding: .5rem .9rem !important; }
.site-nav .nav-link:hover, .site-nav .nav-link.active { color: #fff !important; }
.site-nav .nav-link.active::after {
    content: ''; display: block; height: 2px; background: #fff; border-radius: 2px; margin-top: 4px;
}

/* ---------- 侧边栏（后台/控制台） ---------- */
.sidebar {
    position: fixed; top: 0; bottom: 0; left: 0; z-index: 100;
    width: 230px; padding: 0;
    background: #fff;
    border-right: 1px solid var(--lingdu-border);
    overflow-y: auto;
}
.sidebar .sidebar-brand {
    padding: 18px 20px; font-weight: 700; font-size: 18px; color: var(--lingdu-primary);
    border-bottom: 1px solid var(--lingdu-border);
}
.sidebar .nav-link {
    color: #4b5563; padding: 11px 20px; font-size: 14.5px;
    border-left: 3px solid transparent;
}
.sidebar .nav-link:hover { background: #f3f4fb; color: var(--lingdu-primary); }
.sidebar .nav-link.active {
    background: #f0efff; color: var(--lingdu-primary); font-weight: 600;
    border-left-color: var(--lingdu-primary);
}
.sidebar .nav-link i { width: 20px; margin-right: 8px; }
.sidebar .nav-section {
    padding: 14px 20px 6px; font-size: 11px; color: #9ca3af; text-transform: uppercase; letter-spacing: 1px;
}
.app-content { margin-left: 230px; }
.topbar {
    background: #fff; border-bottom: 1px solid var(--lingdu-border);
    padding: 14px 24px; position: sticky; top: 0; z-index: 99;
}
@media (max-width: 991.98px) {
    .sidebar { transform: translateX(-100%); transition: transform .2s; }
    .sidebar.show { transform: translateX(0); }
    .app-content { margin-left: 0; }
}

/* ---------- 表格 ---------- */
.table > :not(caption) > * > * { padding: .7rem .85rem; vertical-align: middle; }
.table thead th {
    font-weight: 600; font-size: 13px; color: var(--lingdu-muted);
    border-bottom: 1px solid var(--lingdu-border); white-space: nowrap;
}
.table-hover tbody tr:hover { background: #fafaff; }
.table td { font-size: 14px; }

/* ---------- 徽标 ---------- */
.badge { font-weight: 500; padding: .4em .7em; }
.badge-model {
    background: #f0efff; color: var(--lingdu-primary); border-radius: 6px;
    font-family: 'SF Mono', Consolas, monospace; font-size: 12px;
}

/* ---------- Key 展示 ---------- */
.api-key-box {
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    background: #f6f7fb; border: 1px solid var(--lingdu-border); border-radius: 8px;
    padding: 8px 12px; font-size: 13px; word-break: break-all; user-select: all;
}

/* ---------- Hero 区 ---------- */
.hero {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 55%, #9333ea 100%);
    color: #fff; padding: 90px 0 110px; position: relative; overflow: hidden;
}
.hero::after {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(255,255,255,.16), transparent 45%);
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { font-size: 42px; font-weight: 800; line-height: 1.25; }
.hero p.lead { font-size: 17px; opacity: .92; }
.hero-badge {
    display: inline-block; background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.28);
    border-radius: 999px; padding: 5px 14px; font-size: 13px; margin-bottom: 18px;
}

.feature-card {
    background: #fff; border-radius: var(--lingdu-radius); padding: 26px 22px; height: 100%;
    border: 1px solid var(--lingdu-border); transition: transform .2s, box-shadow .2s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(91,91,214,.14); }
.feature-card .feature-icon {
    width: 46px; height: 46px; border-radius: 12px; color: #fff;
    display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 14px;
}

/* ---------- 定价 ---------- */
.pricing-card {
    background: #fff; border: 1px solid var(--lingdu-border); border-radius: 16px;
    padding: 28px; height: 100%; position: relative;
}
.pricing-card.featured {
    border: 2px solid var(--lingdu-primary);
    box-shadow: 0 12px 40px rgba(91,91,214,.18);
}
.pricing-card .price { font-size: 34px; font-weight: 800; color: var(--lingdu-primary); }
.pricing-card.featured::before {
    content: '推荐'; position: absolute; top: -12px; right: 20px;
    background: var(--lingdu-primary); color: #fff; font-size: 12px;
    padding: 4px 12px; border-radius: 999px;
}

/* ---------- 代码块 ---------- */
pre.code-block {
    background: #1e1e2e; color: #d4d4dc; border-radius: 10px; padding: 16px 18px;
    font-size: 13px; overflow-x: auto; font-family: 'SF Mono', Consolas, Monaco, monospace;
    line-height: 1.6;
}
pre.code-block .k { color: #c586c0; }
pre.code-block .s { color: #ce9178; }
pre.code-block .c { color: #6a9955; }
pre.code-block .f { color: #dcdcaa; }

/* ---------- 登录/注册 ---------- */
.auth-card {
    border: none; border-radius: 18px; overflow: hidden;
    box-shadow: 0 20px 60px rgba(91,91,214,.16);
}
.auth-side {
    background: linear-gradient(135deg, #4f46e5, #9333ea); color: #fff; padding: 40px 36px;
}
.auth-side h3 { font-weight: 700; }
.auth-side ul { padding-left: 18px; margin-top: 22px; }
.auth-side li { margin-bottom: 10px; opacity: .93; font-size: 15px; }

/* ---------- 聊天测试区 ---------- */
.chat-window {
    background: #fff; border: 1px solid var(--lingdu-border); border-radius: var(--lingdu-radius);
    height: 440px; overflow-y: auto; padding: 18px;
}
.chat-msg { margin-bottom: 16px; display: flex; gap: 10px; }
.chat-msg .avatar {
    width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center; color: #fff; font-size: 15px;
}
.chat-msg.user .avatar { background: #6c757d; }
.chat-msg.assistant .avatar { background: linear-gradient(135deg, var(--lingdu-primary), var(--lingdu-accent)); }
.chat-msg .bubble {
    background: #f6f7fb; border-radius: 10px; padding: 10px 14px; font-size: 14.5px;
    white-space: pre-wrap; word-break: break-word; max-width: 82%; line-height: 1.65;
}
.chat-msg.user .bubble { background: #eef0ff; }
.chat-msg.error .bubble { background: #fdecec; color: #c0392b; }

/* ---------- 进度条与杂项 ---------- */
.progress { height: 6px; border-radius: 999px; }
.cursor-pointer { cursor: pointer; }
.mono { font-family: 'SF Mono', Consolas, Monaco, monospace; }
.text-tiny { font-size: 12px; }
.divider { height: 1px; background: var(--lingdu-border); margin: 20px 0; }
.empty-state { text-align: center; padding: 50px 20px; color: var(--lingdu-muted); }
.empty-state i { font-size: 46px; opacity: .35; display: block; margin-bottom: 12px; }
footer.site-footer { background: #fff; border-top: 1px solid var(--lingdu-border); padding: 26px 0; }