/* ================= 全局基础 ================= */
:root {
    --bg: #f4f6f9;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --line: #e5e7eb;
    --accent: #2563eb;
    --accent-soft: #eff6ff;
    --green: #16a34a;
    --red: #dc2626;
    --radius: 16px;
    --shadow: 0 1px 3px rgba(17, 24, 39, .06), 0 6px 18px rgba(17, 24, 39, .05);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111318;
        --card: #1c1f26;
        --text: #e5e7eb;
        --muted: #9ca3af;
        --line: #2b2f38;
        --accent: #60a5fa;
        --accent-soft: #1e2a44;
        --shadow: none;
    }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI",
        "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
}

a { color: var(--accent); text-decoration: none; }

.wrap {
    max-width: 480px;
    margin: 0 auto;
    padding: 24px 16px 40px;
}

/* ================= 卡片 ================= */
.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px 20px;
    margin-bottom: 16px;
}

h1.brand {
    margin: 0 0 4px;
    font-size: 22px;
    font-weight: 700;
}

p.sub {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 14px;
}

/* ================= 联系方式条目 ================= */
.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
}
.contact-item:last-child { border-bottom: none; }

.contact-icon {
    width: 40px; height: 40px;
    flex: 0 0 40px;
    border-radius: 12px;
    background: var(--accent-soft);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
}

.contact-main { flex: 1; min-width: 0; }
.contact-label { font-size: 12px; color: var(--muted); }
.contact-value { font-size: 17px; font-weight: 600; word-break: break-all; }
.contact-value a { color: inherit; }

.copy-btn {
    border: 1px solid var(--line);
    background: transparent;
    color: var(--muted);
    font-size: 12px;
    padding: 6px 10px;
    border-radius: 10px;
    cursor: pointer;
    white-space: nowrap;
}
.copy-btn:active { background: var(--accent-soft); color: var(--accent); }

/* ================= 表单 ================= */
.form label,
fieldset legend { display: block; font-size: 14px; color: var(--muted); }

.form label { margin-bottom: 14px; }

.form input, .form textarea, .form select {
    width: 100%;
    margin-top: 4px;
    padding: 12px 14px;
    font-size: 16px;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: 12px;
    outline: none;
    font-family: inherit;
}
.form input:focus, .form textarea:focus { border-color: var(--accent); }

fieldset {
    border: 1px solid var(--line);
    border-radius: 12px;
    margin: 0 0 16px;
    padding: 12px 14px 2px;
}
legend { padding: 0 6px; }

.btn {
    display: block;
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    background: var(--accent);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    text-align: center;
}
.btn:active { opacity: .85; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.alert {
    background: #fef2f2;
    color: var(--red);
    border: 1px solid #fecaca;
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 14px;
    margin-bottom: 14px;
}
@media (prefers-color-scheme: dark) {
    .alert { background: #3a1d1d; border-color: #7f1d1d; }
}

.hint { font-size: 12px; color: var(--muted); margin-top: 6px; }

/* ================= 页脚广告入口 ================= */
.footer-ad {
    text-align: center;
    padding: 10px 0 0;
}
.footer-ad a {
    display: inline-block;
    font-size: 13px;
    color: var(--muted);
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--card);
    box-shadow: var(--shadow);
}
.footer-ad a b { color: var(--accent); }

/* ================= Toast ================= */
#toast {
    position: fixed;
    left: 50%;
    bottom: 48px;
    transform: translateX(-50%) translateY(20px);
    background: rgba(17, 24, 39, .92);
    color: #fff;
    font-size: 14px;
    padding: 10px 18px;
    border-radius: 999px;
    opacity: 0;
    pointer-events: none;
    transition: all .25s ease;
    max-width: 86vw;
    text-align: center;
    z-index: 99;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ================= 广告页 ================= */
.ad-hero { text-align: center; padding: 6px 0 14px; }
.ad-hero .emoji { font-size: 40px; display: block; color: var(--accent); }
.contact-icon .bi, .fi .bi, .si .bi { line-height: 1; }
.ad-hero h1 { font-size: 24px; margin: 8px 0 4px; }
.ad-hero p { color: var(--muted); font-size: 14px; margin: 0; }

.section-title {
    font-size: 16px;
    font-weight: 700;
    margin: 0 0 12px;
    display: flex; align-items: center; gap: 8px;
}
.section-title::before {
    content: "";
    width: 4px; height: 16px;
    background: var(--accent);
    border-radius: 2px;
}

.feat { display: flex; gap: 12px; margin-bottom: 14px; }
.feat:last-child { margin-bottom: 0; }
.feat .fi {
    width: 36px; height: 36px; flex: 0 0 36px;
    border-radius: 10px;
    background: var(--accent-soft);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
}
.feat h3 { margin: 0; font-size: 15px; }
.feat p { margin: 2px 0 0; font-size: 13px; color: var(--muted); }

.scene-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}
.scene {
    background: var(--bg);
    border-radius: 12px;
    padding: 12px;
    text-align: center;
    font-size: 14px;
}
.scene .si { display: block; font-size: 24px; margin-bottom: 4px; }

.price-badge {
    display: inline-block;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    padding: 8px 22px;
    border-radius: 999px;
    margin-top: 14px;
}

.qr-box { text-align: center; }
.qr-box img {
    width: 220px; max-width: 70vw;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    padding: 6px;
}

/* ================= 后台 ================= */
body.admin { font-size: 15px; }

.topbar {
    background: var(--card);
    border-bottom: 1px solid var(--line);
    padding: 14px 16px;
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 10;
}
.topbar .t { font-weight: 700; font-size: 17px; }
.topbar .ops a, .topbar .ops span { font-size: 13px; margin-left: 12px; color: var(--muted); }

.tabs {
    display: flex;
    gap: 8px;
    padding: 12px 16px 0;
    max-width: 860px;
    margin: 0 auto;
    overflow-x: auto;
}
.tab {
    flex: 0 0 auto;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--card);
    border: 1px solid var(--line);
    color: var(--text);
    font-size: 14px;
}
.tab.on { background: var(--accent); border-color: var(--accent); color: #fff; }

.admin-main { max-width: 860px; margin: 0 auto; padding: 14px 16px 48px; }

.rec {
    background: var(--card);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 14px 16px;
    margin-bottom: 12px;
}
.rec.new { border-left: 3px solid var(--accent); }
.rec-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.rec-name { font-weight: 700; }
.rec-time { font-size: 12px; color: var(--muted); white-space: nowrap; }
.rec-body { margin: 6px 0; font-size: 15px; word-break: break-all; }
.rec-meta { font-size: 12px; color: var(--muted); word-break: break-all; }
.rec-meta div { margin-top: 2px; }

.badge {
    display: inline-block;
    font-size: 12px;
    padding: 1px 8px;
    border-radius: 999px;
}
.badge.pending { background: #fef3c7; color: #b45309; }
.badge.done { background: #dcfce7; color: #15803d; }
@media (prefers-color-scheme: dark) {
    .badge.pending { background: #453113; color: #fbbf24; }
    .badge.done { background: #14351f; color: #4ade80; }
}

.rec-ops { margin-top: 8px; display: flex; gap: 8px; }
.mini {
    font-size: 12px;
    padding: 5px 12px;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: transparent;
    color: var(--text);
    cursor: pointer;
}
.mini.danger { color: var(--red); border-color: #fecaca; }

.pager { display: flex; justify-content: center; gap: 10px; padding: 14px 0; font-size: 14px; }
.pager .cur { color: var(--muted); padding: 6px 10px; }

.stat-row { display: flex; gap: 10px; margin-bottom: 14px; }
.stat {
    flex: 1;
    background: var(--card);
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    padding: 12px 4px;
}
.stat b { display: block; font-size: 20px; color: var(--accent); }
.stat span { font-size: 12px; color: var(--muted); }

.empty {
    text-align: center;
    color: var(--muted);
    font-size: 14px;
    padding: 40px 0;
}

.login-box {
    max-width: 360px;
    margin: 18vh auto 0;
    padding: 0 16px;
}