:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1c2230;
  --muted: #6b7385;
  --border: #e3e6ec;
  --primary: #3b5bdb;
  --primary-hover: #2f4ac0;
  --primary-soft: #e7ecfd;
  --danger: #c92a2a;
  --danger-soft: #fdecec;
  --success: #2b8a3e;
  --success-soft: #e6f6ea;
  --warn: #b26a00;
  --warn-soft: #fff4e0;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c;
    --surface: #1b2029;
    --text: #e6e9ef;
    --muted: #9aa3b5;
    --border: #2b313d;
    --primary: #6f8cff;
    --primary-hover: #8aa1ff;
    --primary-soft: #232c4a;
    --danger: #ff6b6b;
    --danger-soft: #3a2024;
    --success: #69db7c;
    --success-soft: #1e3324;
    --warn: #ffc078;
    --warn-soft: #3a2f1c;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--primary); }
h1 { font-size: 1.6rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.05rem; margin: 0 0 1rem; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
main.container { padding-top: 24px; padding-bottom: 48px; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Topbar */
.topbar { background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); text-decoration: none; font-size: 1.05rem; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px; background: var(--primary); color: #fff; font-weight: 700; }
.topbar-nav { display: flex; align-items: center; gap: 12px; }
.topbar-nav form { margin: 0; }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 20px; }
.auth-card { max-width: 420px; margin: 40px auto; }
.form-card { max-width: 640px; margin: 0 auto; }

.page-head, .section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.section-head h2 { margin: 0; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid transparent; border-radius: 8px; padding: 9px 16px; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; background: var(--surface); color: var(--text); border-color: var(--border); }
.btn:hover { border-color: var(--muted); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); border-color: var(--danger); }
.btn-small { padding: 5px 10px; font-size: 0.85rem; font-weight: 500; }

/* Forms */
.stack { display: grid; gap: 14px; margin: 16px 0; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 16px; }
.span-2 { grid-column: span 2; }
label { display: grid; gap: 6px; font-weight: 600; font-size: 0.9rem; }
input, select, textarea { font: inherit; font-weight: 400; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 9px 12px; width: 100%; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* Alerts */
.alert { border-radius: 8px; padding: 10px 14px; margin-bottom: 16px; border: 1px solid transparent; }
.alert ul { margin: 0; padding-left: 18px; }
.alert-error { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.alert-success { background: var(--success-soft); color: var(--success); border-color: var(--success); }

/* Stats */
.stats { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 20px; }
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-label { color: var(--muted); font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
.stat-value { font-size: 1.8rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-hero { background: var(--primary); border-color: var(--primary); color: #fff; }
.stat-hero .stat-label, .stat-hero .muted { color: rgba(255, 255, 255, 0.8); }
.stat-hero .stat-value { font-size: 2.3rem; }
.stat-of { font-size: 1.1rem; font-weight: 500; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* Category bars */
.bars { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.bar-head { display: flex; justify-content: space-between; gap: 8px; font-size: 0.9rem; margin-bottom: 4px; }
.bar-track { height: 8px; border-radius: 4px; background: var(--primary-soft); overflow: hidden; }
.bar-fill { height: 100%; background: var(--primary); border-radius: 4px; }

/* Upcoming */
.upcoming { list-style: none; margin: 0; padding: 0; }
.upcoming li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.upcoming li:last-child { border-bottom: 0; }
.upcoming li > div { display: flex; flex-direction: column; }

/* Filters */
.filters { display: flex; gap: 4px; flex-wrap: wrap; }
.filters a { padding: 5px 12px; border-radius: 999px; text-decoration: none; color: var(--muted); font-size: 0.85rem; font-weight: 600; }
.filters a.active { background: var(--primary-soft); color: var(--primary); }

/* Table */
.table-wrap { overflow-x: auto; }
table.subs { width: 100%; border-collapse: collapse; }
.subs th, .subs td { padding: 10px 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
.subs th { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; }
.subs th.num, .subs td.num { text-align: right; }
.subs tr.inactive td { color: var(--muted); }
.actions { display: flex; gap: 6px; justify-content: flex-end; }
.actions form { margin: 0; }

.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; }
.badge-active { background: var(--success-soft); color: var(--success); }
.badge-paused { background: var(--warn-soft); color: var(--warn); }
.badge-cancelled { background: var(--danger-soft); color: var(--danger); }

@media (max-width: 800px) {
  .stats, .grid-2 { grid-template-columns: 1fr; }
  .user-email { display: none; }
}

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .subs thead { display: none; }
  .subs, .subs tbody, .subs tr, .subs td { display: block; width: 100%; }
  .subs tr { border-bottom: 1px solid var(--border); padding: 8px 0; }
  .subs td { border: 0; padding: 4px 0; display: flex; justify-content: space-between; gap: 12px; text-align: right; }
  .subs td[data-label]::before { content: attr(data-label); color: var(--muted); font-size: 0.85rem; text-align: left; }
  .subs td[data-label="Name"] { display: block; text-align: left; }
  .subs td[data-label="Name"]::before { content: none; }
  .actions { justify-content: flex-start; padding-top: 8px; }
}