/* ============================================================
   Member System — style.css
   Pure CSS, no framework. Dark + gold theme.
   ============================================================ */
:root {
  --bg: #0f1115;
  --bg-soft: #171a21;
  --card: #1d212b;
  --card-2: #232834;
  --border: #2c3340;
  --text: #e8eaed;
  --muted: #9aa3b2;
  --gold: #d4af37;
  --gold-soft: #f0d97a;
  --primary: #4f8cff;
  --primary-d: #3a6fd8;
  --green: #34c759;
  --red: #ff5c5c;
  --orange: #ff9f0a;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(0,0,0,.35);
  --font: -apple-system, "Segoe UI", "Sarabun", Tahoma, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Layout ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand .dot { width: 12px; height: 12px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 12px var(--gold); }
.nav { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--muted); padding: 8px 12px; border-radius: 8px; font-size: 14px; }
.nav a:hover { background: var(--card); color: var(--text); text-decoration: none; }
.nav a.active { background: var(--card-2); color: var(--gold); }

.container { max-width: 1080px; margin: 0 auto; padding: 24px 20px 60px; }
.page-title { margin: 6px 0 4px; font-size: 24px; }
.page-sub { color: var(--muted); margin: 0 0 22px; font-size: 14px; }

/* ---------- Auth pages ---------- */
.auth-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px;
}
.auth-card {
  width: 100%; max-width: 420px; background: var(--card);
  border: 1px solid var(--border); border-radius: 16px; padding: 32px;
  box-shadow: var(--shadow);
}
.auth-card h1 { margin: 0 0 4px; font-size: 22px; }
.auth-card .sub { color: var(--muted); margin: 0 0 22px; font-size: 14px; }
.auth-foot { margin-top: 18px; text-align: center; color: var(--muted); font-size: 14px; }

/* ---------- Forms ---------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input, .field select {
  width: 100%; padding: 11px 13px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg-soft); color: var(--text);
  font-size: 15px; font-family: inherit; outline: none;
}
.field input:focus, .field select:focus { border-color: var(--primary); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border-radius: 9px; border: 1px solid transparent;
  background: var(--primary); color: #fff; font-size: 15px; font-weight: 600;
  cursor: pointer; font-family: inherit; transition: filter .15s;
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-gold { background: var(--gold); color: #1a1400; }
.btn-danger { background: var(--red); }
.btn-sm { padding: 6px 11px; font-size: 13px; }

/* ---------- Plan cards ---------- */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.plan {
  border: 2px solid var(--border); border-radius: 14px; padding: 18px; background: var(--card);
  cursor: pointer; transition: border-color .15s, transform .1s;
}
.plan:hover { transform: translateY(-2px); }
.plan.selected { border-color: var(--gold); box-shadow: 0 0 0 1px var(--gold) inset; }
.plan h3 { margin: 0 0 4px; text-transform: capitalize; }
.plan .price { font-size: 26px; font-weight: 700; color: var(--gold); }
.plan .price small { font-size: 13px; color: var(--muted); font-weight: 400; }
.plan ul { margin: 12px 0 0; padding-left: 18px; color: var(--muted); font-size: 13px; }
.plan ul li { margin-bottom: 4px; }

/* ---------- Stat cards ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card {
  background: linear-gradient(160deg, var(--card), var(--card-2));
  border: 1px solid var(--border); border-radius: 14px; padding: 18px;
}
.stat-card .label { color: var(--muted); font-size: 13px; }
.stat-card .value { font-size: 28px; font-weight: 700; margin-top: 4px; }
.stat-card .value.gold { color: var(--gold); }
.stat-card .value.green { color: var(--green); }

/* ---------- Cards / panels ---------- */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
}
.card + .card { margin-top: 18px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.card-head h2 { margin: 0; font-size: 18px; }

/* ---------- Toolbar ---------- */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.toolbar input[type=search] {
  flex: 1; min-width: 200px; padding: 10px 13px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg-soft); color: var(--text); font-size: 14px;
}

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead th {
  text-align: left; padding: 12px 14px; background: var(--bg-soft);
  color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--border); white-space: nowrap;
}
tbody td { padding: 12px 14px; border-bottom: 1px solid var(--border); }
tbody tr:hover { background: var(--card-2); }
tbody tr:last-child td { border-bottom: none; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; text-transform: capitalize;
}
.badge.active   { background: rgba(52,199,89,.15); color: var(--green); }
.badge.inactive { background: rgba(154,163,178,.15); color: var(--muted); }
.badge.paid     { background: rgba(52,199,89,.15); color: var(--green); }
.badge.unpaid   { background: rgba(255,159,10,.15); color: var(--orange); }
.badge.overdue  { background: rgba(255,92,92,.15); color: var(--red); }
.badge.plan     { background: rgba(212,175,55,.15); color: var(--gold-soft); }
.badge.admin    { background: rgba(79,140,255,.15); color: var(--primary); }
.badge.member   { background: rgba(154,163,178,.15); color: var(--muted); }

/* ---------- Bar chart (pure CSS) ---------- */
.barchart { display: flex; align-items: flex-end; gap: 18px; height: 260px; padding: 14px 8px 0; }
.bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; height: 100%; justify-content: flex-end; }
.bar {
  width: 100%; max-width: 70px; border-radius: 8px 8px 0 0;
  background: linear-gradient(180deg, var(--gold-soft), var(--gold));
  position: relative; transition: height .4s ease;
  min-height: 2px;
}
.bar .bar-val { position: absolute; top: -22px; left: 0; right: 0; text-align: center; font-size: 13px; font-weight: 600; }
.bar-col .bar-label { margin-top: 8px; color: var(--muted); font-size: 13px; text-transform: capitalize; }

/* ---------- Modal ---------- */
.modal-back {
  position: fixed; inset: 0; background: rgba(0,0,0,.6);
  display: none; align-items: center; justify-content: center; z-index: 50; padding: 20px;
}
.modal-back.open { display: flex; }
.modal {
  width: 100%; max-width: 480px; background: var(--card);
  border: 1px solid var(--border); border-radius: 16px; padding: 24px; box-shadow: var(--shadow);
}
.modal h3 { margin: 0 0 18px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }

/* ---------- Toast / alerts ---------- */
.alert { padding: 11px 14px; border-radius: 9px; font-size: 14px; margin-bottom: 16px; display: none; }
.alert.show { display: block; }
.alert.error { background: rgba(255,92,92,.12); color: var(--red); border: 1px solid rgba(255,92,92,.3); }
.alert.ok    { background: rgba(52,199,89,.12); color: var(--green); border: 1px solid rgba(52,199,89,.3); }

.muted { color: var(--muted); }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1; }
.spacer { flex: 1; }
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.hidden { display: none !important; }

@media (max-width: 640px) {
  .nav a { padding: 7px 9px; font-size: 13px; }
  .container { padding: 18px 14px 50px; }
}