/* =============================================================
   Summerpulse · 北欧极简风格
   白底 / 留白 / 细边框 / teal 强调色
   ============================================================= */
:root {
  --bg: #FCFCFB;
  --surface: #FFFFFF;
  --border: #E7E8E4;
  --text: #1F2933;
  --muted: #8A9199;
  --accent: #0E9594;
  --accent-dark: #0B7A79;
  --accent-soft: #E6F4F4;
  --danger: #C4453C;
  --danger-soft: #FBEDEB;
  --ok: #2F855A;
  --ok-soft: #E8F5EE;
  --pending: #B7791F;
  --pending-soft: #FCF3E3;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(31, 41, 51, 0.04);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); }
h1, h2, h3 { line-height: 1.3; margin: 0 0 .5em; font-weight: 600; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.08rem; }
p { margin: .4em 0; }
code { background: #F1F2EF; padding: .1em .4em; border-radius: 4px; font-size: .88em; }

.container { max-width: 1060px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace; font-size: .92em; }
.accent { color: var(--accent); }
.pull-right { margin-left: auto; text-align: right; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.text-in { color: var(--ok); }
.text-out { color: var(--danger); }

/* ---------- 顶栏 ---------- */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 62px; }
.logo { font-weight: 700; font-size: 1.12rem; color: var(--text); letter-spacing: .02em; display: inline-flex; align-items: center; }
.logo:hover { color: var(--text); }
.logo-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); margin-left: 6px; }
.main-nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.main-nav a { color: var(--muted); padding: 6px 11px; border-radius: 8px; font-size: .93rem; }
.main-nav a:hover { color: var(--text); background: #F3F4F2; }
.header-right { display: flex; align-items: center; gap: 8px; }
.user-menu { display: flex; gap: 8px; }
.balance-chip {
  background: var(--accent-soft); color: var(--accent-dark);
  padding: 5px 13px; border-radius: 999px; font-weight: 600; font-size: .88rem; white-space: nowrap;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid transparent; border-radius: 8px; cursor: pointer;
  padding: 8px 18px; font-size: .93rem; font-family: var(--font); font-weight: 500;
  background: transparent; color: var(--text); transition: all .15s; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-ghost { border-color: var(--border); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(.92); color: #fff; }
.btn-lg { padding: 12px 30px; font-size: 1rem; border-radius: 10px; }
.btn-sm { padding: 4px 12px; font-size: .84rem; }
.btn-block { width: 100%; }

/* ---------- 布局区块 ---------- */
.site-main { min-height: calc(100vh - 62px - 90px); padding: 34px 20px 60px; }
.page-head { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 22px; }
.page-head h2 { margin: 0; }
.section-head { display: flex; align-items: center; justify-content: space-between; margin: 26px 0 12px; }
.section-head h3 { margin: 0; }
.dash-board-section { margin-top: 30px; }
.section-head + .card, .dash-board-section .card { margin-top: 0; }
h3 + .card, h3 + .table-card { margin-top: 12px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 24px; box-shadow: var(--shadow);
  margin: 10px 0;
}
.card-danger { border-color: #F0C8C4; background: #FFFDFC; }
.empty-state { text-align: center; color: var(--muted); padding: 34px 10px !important; }

/* ---------- 提示 ---------- */
.flash { padding: 11px 16px; border-radius: 8px; margin: 0 0 16px; font-size: .92rem; }
.flash-success { background: var(--ok-soft); color: var(--ok); }
.flash-error { background: var(--danger-soft); color: var(--danger); }
.flash-info { background: #EEF2F7; color: #4A6B8A; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 500; font-size: .9rem; margin-bottom: 6px; }
input[type="text"], input[type="password"], input[type="email"], input[type="number"],
input[type="datetime-local"], select, textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: .95rem; font-family: var(--font); background: var(--surface); color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
textarea { resize: vertical; }
.field-error { display: block; color: var(--danger); font-size: .84rem; margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.inline-form { display: inline-flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.input-sm { padding: 5px 9px; font-size: .85rem; width: 150px; }

/* ---------- 表格 ---------- */
.table-card { padding: 6px 0; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: 11px 18px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 500; font-size: .83rem; white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #FAFBFA; }

/* ---------- 徽章 / 筛选 ---------- */
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 500; white-space: nowrap; }
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-fail { background: var(--danger-soft); color: var(--danger); }
.badge-pending { background: var(--pending-soft); color: var(--pending); }
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; }
.chip { border: 1px solid var(--border); background: var(--surface); border-radius: 999px; padding: 5px 15px; font-size: .86rem; color: var(--muted); }
.chip:hover { color: var(--accent); border-color: var(--accent); }
.chip-active { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip-active:hover { color: #fff; }
.pager { display: flex; align-items: center; gap: 14px; justify-content: center; margin: 18px 0; }

/* ---------- 认证页 ---------- */
.auth-card { max-width: 430px; margin: 5vh auto 0; }
.auth-alt { text-align: center; margin-top: 16px; color: var(--muted); }

/* ---------- 落地页 ---------- */
.hero { text-align: center; padding: 70px 0 46px; }
.hero h1 { font-size: 2.5rem; font-weight: 700; letter-spacing: -.02em; }
.hero-sub { color: var(--muted); font-size: 1.1rem; margin: 14px 0 30px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; }
.landing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0; }
.card-icon {
  width: 40px; height: 40px; border-radius: 50%; background: var(--accent-soft);
  color: var(--accent-dark); display: flex; align-items: center; justify-content: center;
  font-weight: 700; margin-bottom: 14px;
}
.landing-features { margin-top: 50px; text-align: center; }
.landing-features h2, .landing-leaderboard h2 { text-align: left; }
.landing-features .landing-grid { text-align: left; }
.landing-leaderboard { margin-top: 50px; }
.mini-list { list-style: none; margin: 0; padding: 0; }
.mini-list li { display: flex; align-items: center; gap: 12px; padding: 9px 4px; border-bottom: 1px solid var(--border); }
.mini-list li:last-child { border-bottom: none; }
.rank-1, .medal-1 { color: #C79A2E; font-weight: 700; }
.rank-2, .medal-2 { color: #8E9BAA; font-weight: 700; }
.rank-3, .medal-3 { color: #B0764A; font-weight: 700; }
.medal { width: 28px; height: 28px; border-radius: 50%; background: #F1F2EF; display: inline-flex; align-items: center; justify-content: center; font-size: .85rem; }
.medal-1 { background: #F7EEDA; } .medal-2 { background: #EDF0F3; } .medal-3 { background: #F3E8E0; }
.rank-col { width: 70px; }

/* ---------- 仪表盘 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 8px 0 22px; }
.stat-grid-4 { grid-template-columns: repeat(4, 1fr); }
.stat-card { text-align: center; padding: 20px 14px; }
.stat-label { color: var(--muted); font-size: .86rem; }
.stat-value { font-size: 1.75rem; font-weight: 700; margin: 4px 0 0; font-variant-numeric: tabular-nums; }
.stat-unit { color: var(--muted); font-size: .82rem; }
.dashboard-actions { display: flex; gap: 12px; margin: 6px 0 10px; flex-wrap: wrap; }

/* ---------- 任务中心 ---------- */
.offer-walls, .offer-section { margin-bottom: 28px; }
.wall-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.wall-card { display: flex; align-items: center; gap: 16px; color: var(--text); transition: border-color .15s; }
.wall-card:hover { border-color: var(--accent); color: var(--text); }
.wall-card .btn { margin-left: auto; }
.wall-icon { font-size: 1.7rem; }
.wall-name { font-weight: 600; }
.offer-list { display: flex; flex-direction: column; gap: 12px; }
.offer-card { display: flex; align-items: center; gap: 16px; padding: 16px 20px; color: var(--text); transition: border-color .15s; }
.offer-card:hover { border-color: var(--accent); color: var(--text); }
.offer-icon { font-size: 1.5rem; }
.offer-body { flex: 1; min-width: 0; }
.offer-title { font-weight: 600; }
.offer-side { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }
.wall-head { justify-content: space-between; align-items: center; }
.wall-frame { padding: 0; overflow: hidden; }
.wall-frame iframe { width: 100%; height: 78vh; min-height: 600px; display: block; border: none; }
.wall-tip { text-align: center; margin-top: 12px; }

/* ---------- 提现 ---------- */
.withdraw-layout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; align-items: start; }
.wd-history { margin-top: 30px; }
.search-bar { display: flex; gap: 10px; margin-bottom: 16px; }
.search-bar input { max-width: 340px; }

/* ---------- 邀请 ---------- */
.invite-card { margin-top: 6px; }
.copy-row { display: flex; gap: 10px; margin: 12px 0 6px; }
.copy-row input { flex: 1; }
.invitees { margin-top: 28px; }

/* ---------- 排行榜 ---------- */
.tabs { display: flex; gap: 8px; }
.tab { border: 1px solid var(--border); border-radius: 8px; padding: 5px 18px; color: var(--muted); font-size: .9rem; background: var(--surface); }
.tab-active, .tab:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---------- 兑换码 ---------- */
.redeem-form { display: flex; gap: 10px; }
.redeem-form input { flex: 1; max-width: 320px; }
.redeem-history { margin-top: 26px; }

/* ---------- 抽奖 ---------- */
.lottery-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
.lottery-play-card { text-align: center; padding: 34px 24px; }
.lottery-wheel { font-size: 3.4rem; margin-bottom: 18px; }
.prize-row { display: flex; padding: 8px 2px; border-bottom: 1px solid var(--border); }
.prize-row:last-child { border-bottom: none; }
.lottery-recent { margin-top: 28px; }

/* ---------- 静态页 / 错误页 ---------- */
.prose { max-width: 760px; margin: 0 auto; }
.error-page { text-align: center; padding: 90px 0; }
.error-code { font-size: 5rem; font-weight: 700; color: var(--accent); letter-spacing: -.04em; }

/* ---------- 实时动态 ---------- */
.live-feed { padding: 14px 24px; }

/* ---------- 管理后台 ---------- */
.admin-body { background: #F5F6F4; }
.admin-shell { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 216px; background: #22303C; color: #C6CFD8; flex-shrink: 0;
  display: flex; flex-direction: column; padding: 18px 12px; position: sticky; top: 0; height: 100vh;
}
.admin-sidebar .logo { color: #fff; padding: 4px 10px 16px; }
.admin-nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.admin-nav a { color: #AEB9C4; padding: 8px 12px; border-radius: 7px; font-size: .92rem; }
.admin-nav a:hover { color: #fff; background: rgba(255, 255, 255, .06); }
.admin-nav a.active { color: #fff; background: var(--accent); }
.admin-sidebar-footer { display: flex; flex-direction: column; gap: 2px; border-top: 1px solid rgba(255,255,255,.1); padding-top: 10px; }
.admin-sidebar-footer a { color: #8B97A3; padding: 6px 12px; font-size: .86rem; border-radius: 7px; }
.admin-sidebar-footer a:hover { color: #fff; }
.admin-main { flex: 1; min-width: 0; }
.admin-topbar {
  background: var(--surface); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
}
.admin-topbar h1 { font-size: 1.2rem; margin: 0; }
.admin-content { padding: 24px 28px 50px; max-width: 1160px; }
.admin-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
.prize-edit-form { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0; align-items: center; }
.prize-edit-form input, .prize-edit-form select { width: auto; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); }
.footer-inner { display: flex; justify-content: space-between; padding: 18px 20px; flex-wrap: wrap; gap: 10px; }
.footer-left { display: flex; gap: 18px; align-items: center; color: var(--muted); font-size: .88rem; }
.footer-right { display: flex; gap: 18px; color: var(--muted); font-size: .88rem; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .header-inner { gap: 12px; height: auto; flex-wrap: wrap; padding: 10px 0; }
  .main-nav { order: 3; width: 100%; }
  .landing-grid, .stat-grid, .stat-grid-4 { grid-template-columns: 1fr 1fr; }
  .withdraw-layout, .lottery-layout, .admin-two-col { grid-template-columns: 1fr; }
  .wall-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .admin-shell { flex-direction: column; }
  .admin-sidebar { width: 100%; height: auto; position: static; }
  .admin-nav { flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 560px) {
  .landing-grid, .stat-grid, .stat-grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .user-menu { display: none; }
  .redeem-form { flex-direction: column; }
  .redeem-form input { max-width: none; }
}