/* 流量联盟 - 前端样式 */
:root {
    --bg: #f5f6f8;
    --card: #ffffff;
    --line: #e6e8ec;
    --text: #14161a;
    --sub: #6b7280;
    --accent: #0f766e;
    --accent-2: #0d9488;
    --accent-soft: #e6f4f2;
    --ok: #15803d;
    --ok-soft: #e8f5ec;
    --warn: #b45309;
    --warn-soft: #fdf3e2;
    --bad: #b91c1c;
    --bad-soft: #fdecec;
    --radius: 12px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    font-size: 14px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -.01em; }
p { margin: 0 0 12px; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.page { padding: 32px 24px 64px; max-width: 1280px; margin: 0 auto; }

/* 顶栏 */
.topbar {
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 30;
}
.bar-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -.02em; }
.brand-mark {
    width: 22px; height: 22px; border-radius: 7px;
    background: linear-gradient(135deg, var(--accent), #14b8a6);
    box-shadow: 0 4px 12px rgba(15, 118, 110, .25);
}
.topnav { display: flex; gap: 22px; color: var(--sub); }
.topnav a:hover { color: var(--text); }
.topact { margin-left: auto; display: flex; gap: 10px; }

/* 按钮 */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    height: 38px; padding: 0 16px; border-radius: 10px;
    border: 1px solid var(--line); background: #fff; color: var(--text);
    font-size: 14px; cursor: pointer; transition: .18s;
    min-width: 76px;
}
.btn:hover { border-color: #cfd4dc; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-2); }
.btn.ghost { background: transparent; }
.btn.sm { height: 32px; padding: 0 12px; font-size: 13px; min-width: 60px; }
.btn.danger { color: var(--bad); border-color: #f0c9c9; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* 卡片 */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.card + .card { margin-top: 18px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.card-head h2 { font-size: 16px; }
.hint { color: var(--sub); font-size: 13px; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* 指标 */
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.stat .k { color: var(--sub); font-size: 13px; }
.stat .v { font-size: 26px; font-weight: 650; letter-spacing: -.02em; margin-top: 4px; }
.stat .v small { font-size: 13px; font-weight: 500; color: var(--sub); margin-left: 4px; }

/* 表格 */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--sub); font-weight: 500; font-size: 13px; background: #fafbfc; }
td { font-size: 13.5px; }
tr:last-child td { border-bottom: 0; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
.empty { color: var(--sub); text-align: center; padding: 40px 0; }

/* 状态 */
.badge { display: inline-flex; align-items: center; height: 24px; padding: 0 9px; border-radius: 7px; font-size: 12px; }
.badge.ok { color: var(--ok); background: var(--ok-soft); }
.badge.warn { color: var(--warn); background: var(--warn-soft); }
.badge.bad { color: var(--bad); background: var(--bad-soft); }
.badge.mute { color: var(--sub); background: #f1f2f4; }
.badge.info { color: #1d4ed8; background: #eef2ff; }

/* 表单 */
.form label { display: block; margin-bottom: 16px; }
.form label span { display: block; color: var(--sub); font-size: 13px; margin-bottom: 6px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=url], select, textarea {
    width: 100%; height: 40px; padding: 0 12px;
    border: 1px solid var(--line); border-radius: 10px; background: #fff;
    font-size: 14px; color: var(--text); font-family: inherit; outline: none;
    transition: .18s;
}
textarea { height: 96px; padding: 10px 12px; resize: vertical; line-height: 1.6; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.inline { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
hr { border: 0; border-top: 1px solid var(--line); margin: 22px 0; }

/* 提示 */
.alert { border-radius: 10px; padding: 12px 16px; margin-bottom: 18px; font-size: 13.5px; }
.alert.ok { background: var(--ok-soft); color: var(--ok); }
.alert.bad { background: var(--bad-soft); color: var(--bad); }

/* 侧栏布局 */
.dash { display: flex; min-height: 100vh; }
.side {
    width: 248px; flex: 0 0 248px; background: #fff; border-right: 1px solid var(--line);
    padding: 20px 16px; display: flex; flex-direction: column; gap: 18px;
    position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.side-user { display: flex; align-items: center; gap: 10px; padding: 10px 8px; border-radius: 10px; background: #fafbfc; }
.avatar { width: 34px; height: 34px; border-radius: 9px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; font-weight: 600; }
.uname { font-weight: 600; font-size: 13.5px; line-height: 1.2; }
.urole { color: var(--sub); font-size: 12px; }
.side-nav { display: flex; flex-direction: column; gap: 4px; }
.side-nav a { padding: 9px 12px; border-radius: 9px; display: flex; flex-direction: column; transition: .15s; }
.side-nav a span { font-size: 14px; }
.side-nav a em { font-style: normal; font-size: 11.5px; color: var(--sub); }
.side-nav a:hover { background: #f5f6f8; }
.side-nav a.on { background: var(--accent-soft); }
.side-nav a.on span { color: var(--accent); font-weight: 600; }
.side-foot { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--line); font-size: 13px; color: var(--sub); }
.main { flex: 1; min-width: 0; padding: 28px 32px 64px; }
.main-head { margin-bottom: 22px; }
.main-head h1 { font-size: 22px; }

/* 落地页 */
.hero { padding: 56px 0 20px; }
.hero h1 { font-size: 38px; line-height: 1.25; letter-spacing: -.03em; }
.hero .lead { color: var(--sub); font-size: 16px; max-width: 720px; margin-top: 14px; }
.hero-acts { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.pill { display: inline-flex; align-items: center; gap: 8px; height: 30px; padding: 0 12px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: 13px; }
.feature { display: flex; flex-direction: column; gap: 8px; }
.feature h3 { font-size: 15px; }
.feature p { color: var(--sub); font-size: 13.5px; margin: 0; }
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.flow .step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.flow .step b { display: block; color: var(--accent); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.flow .step h4 { margin: 6px 0 4px; font-size: 15px; }
.flow .step p { color: var(--sub); font-size: 13px; margin: 0; }

/* 登录页 */
.auth-body { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); padding: 24px; }
.auth-card { width: 100%; max-width: 420px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); padding: 32px; }
.auth-card h1 { font-size: 20px; margin-bottom: 6px; }
.auth-card .sub { color: var(--sub); font-size: 13px; margin-bottom: 22px; }

/* 分页 */
.pager { display: flex; gap: 6px; margin-top: 18px; flex-wrap: wrap; }
.page, .dots { min-width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; border-radius: 9px; border: 1px solid var(--line); color: var(--sub); font-size: 13px; padding: 0 10px; }
.page.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.dots { border: 0; }

/* 页脚 */
.foot { border-top: 1px solid var(--line); margin-top: 48px; padding: 24px 0; color: var(--sub); font-size: 13px; }

/* 代码块 */
.code { background: #0f1419; color: #d6e2ef; border-radius: 10px; padding: 16px 18px; font-family: ui-monospace, Menlo, monospace; font-size: 12.5px; line-height: 1.8; overflow-x: auto; white-space: pre; }

@media (max-width: 900px) {
    .bar-inner { gap: 14px; height: 60px; }
    .topnav { display: none; }
    .dash { flex-direction: column; }
    .side { width: 100%; flex: none; height: auto; position: static; border-right: 0; border-bottom: 1px solid var(--line); }
    .side-nav { flex-direction: row; overflow-x: auto; gap: 6px; }
    .side-nav a { flex: 0 0 auto; padding: 8px 12px; background: #fafbfc; }
    .side-nav a em { display: none; }
    .side-user, .side-foot { display: none; }
    .main { padding: 18px 16px 48px; }
    .container { padding: 0 16px; }
    .grid2, .grid3, .grid4 { grid-template-columns: 1fr; }
    .flow { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 27px; }
}