:root {
    --bg: #f6f7f9;
    --card: #ffffff;
    --text: #1a1d24;
    --muted: #6b7280;
    --border: #e5e7eb;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --danger: #dc2626;
    --success: #16a34a;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    font-size: 16px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
}
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 18px; border-radius: 8px; border: 1px solid transparent;
    font-size: 15px; font-weight: 600; cursor: pointer; transition: background .15s;
    background: var(--primary); color: #fff;
}
.btn:hover { background: var(--primary-hover); text-decoration: none; }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: #f3f4f6; }
.btn-danger { background: var(--danger); }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

input, textarea, select {
    width: 100%; padding: 10px 12px; border: 1px solid var(--border);
    border-radius: 8px; font-size: 15px; font-family: inherit;
    background: #fff; color: var(--text);
}
input:focus, textarea:focus, select:focus {
    outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary);
}
label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14px; }
.field { margin-bottom: 16px; }
.help { font-size: 13px; color: var(--muted); margin-top: 4px; }
.error { color: var(--danger); font-size: 14px; }
.success { color: var(--success); font-size: 14px; }

/* Nav */
nav.topnav {
    background: var(--card); border-bottom: 1px solid var(--border);
    padding: 12px 0; position: sticky; top: 0; z-index: 10;
}
nav.topnav .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
nav.topnav .logo { font-weight: 800; font-size: 18px; color: var(--text); }
nav.topnav .links { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
nav.topnav .links a { color: var(--muted); font-weight: 500; font-size: 15px; }
nav.topnav .links a:hover { color: var(--text); }

/* Table */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-weight: 600; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: none; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-active { background: #dcfce7; color: #166534; }
.badge-inactive { background: #fee2e2; color: #991b1b; }
.badge-expired { background: #e5e7eb; color: #374151; }

.grid-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.stat .num { font-size: 28px; font-weight: 800; }
.stat .label { font-size: 13px; color: var(--muted); }

/* Interstitial */
.interstitial { display: flex; flex-direction: column; height: 100vh; }
.interstitial header { padding: 12px 16px; border-bottom: 1px solid var(--border); background: var(--card); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.interstitial .iframe-wrap { flex: 1 1 auto; position: relative; background: #000; min-height: 240px; }
.interstitial iframe { width: 100%; height: 100%; border: 0; display: block; }
.interstitial footer { background: var(--card); border-top: 1px solid var(--border); padding: 16px; text-align: center; }
.countdown-num { font-size: 56px; font-weight: 800; font-variant-numeric: tabular-nums; }
.countdown-label { color: var(--muted); font-size: 15px; }

.spinner {
    display: inline-block; width: 18px; height: 18px; border: 2px solid var(--border);
    border-top-color: var(--primary); border-radius: 50%;
    animation: spin .8s linear infinite; vertical-align: -3px; margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.fallback-msg { padding: 32px 16px; text-align: center; }
.fallback-msg .icon { font-size: 40px; }

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
}