:root {
  color-scheme: dark;
  --bg: #06080d;
  --panel: rgba(14, 20, 31, 0.88);
  --panel-2: #101824;
  --line: rgba(226, 190, 104, 0.18);
  --text: #f6f3eb;
  --muted: #9aa5b4;
  --gold: #d8b66b;
  --gold-2: #f0d58b;
  --green: #27c08a;
  --red: #ff6868;
  --blue: #54a8ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(216, 182, 107, 0.12), transparent 32rem),
    radial-gradient(circle at top right, rgba(39, 192, 138, 0.12), transparent 28rem),
    var(--bg);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
}
.auth-hero {
  padding: 56px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(216, 182, 107, .13), rgba(39, 192, 138, .07));
  border-right: 1px solid var(--line);
}
.brand { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; font-weight: 800; letter-spacing: .02em; }
.brand-logo { width: min(330px, 100%); height: auto; display: block; }
.mark {
  width: 44px; height: 44px; border: 1px solid rgba(216, 182, 107, .55); border-radius: 14px;
  display: grid; place-items: center; color: var(--gold); background: rgba(216, 182, 107, .08);
}
.hero-copy h1 { font-size: clamp(36px, 6vw, 72px); line-height: .95; margin: 0 0 24px; }
.hero-copy p { max-width: 720px; color: var(--muted); font-size: 18px; line-height: 1.7; margin: 0 0 14px; }
.auth-card {
  width: min(520px, calc(100% - 32px));
  margin: auto;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(9, 13, 21, .78);
  box-shadow: var(--shadow);
}
.tabs { display: flex; gap: 8px; padding: 5px; border: 1px solid rgba(255,255,255,.08); border-radius: 14px; background: rgba(255,255,255,.04); }
.tab { flex: 1; border: 0; color: var(--muted); background: transparent; border-radius: 10px; padding: 11px; }
.tab.active { color: #111; background: linear-gradient(135deg, var(--gold), var(--gold-2)); font-weight: 800; }
.form { display: grid; gap: 14px; margin-top: 20px; }
.field { display: grid; gap: 8px; }
.field label { color: var(--muted); font-size: 13px; }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 13px;
  background: rgba(255,255,255,.045);
  color: var(--text);
  padding: 13px 14px;
  outline: none;
}
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: rgba(216, 182, 107, .75); }
.check { display: flex; align-items: flex-start; gap: 10px; color: var(--muted); font-size: 13px; line-height: 1.4; }
.check input { margin-top: 3px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid rgba(216, 182, 107, .3);
  border-radius: 13px;
  padding: 12px 16px;
  color: var(--text);
  background: rgba(255,255,255,.055);
  transition: .2s ease;
}
.btn:hover { transform: translateY(-1px); border-color: rgba(216, 182, 107, .7); }
.btn.primary { color: #101010; border: 0; font-weight: 800; background: linear-gradient(135deg, var(--gold), var(--gold-2)); }
.btn.danger { border-color: rgba(255,104,104,.35); color: #ffdada; }
.btn.green { border-color: rgba(39,192,138,.45); color: #bfffe7; }
.btn.small { padding: 8px 10px; border-radius: 10px; font-size: 12px; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 280px 1fr; }
.sidebar {
  position: sticky; top: 0; height: 100vh; padding: 24px 18px;
  background: rgba(8, 11, 18, .9); border-right: 1px solid var(--line);
}
.nav { display: grid; gap: 8px; margin-top: 28px; }
.nav button {
  text-align: left; border: 0; border-radius: 13px; padding: 12px 14px;
  color: var(--muted); background: transparent;
}
.nav button.active, .nav button:hover { color: var(--text); background: rgba(216, 182, 107, .1); }
.main { padding: 28px; min-width: 0; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.topbar h1 { margin: 0; font-size: clamp(24px, 3vw, 36px); }
.muted { color: var(--muted); }
.grid { display: grid; gap: 16px; }
.grid.cards { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
  border: 1px solid var(--line); border-radius: 20px; background: var(--panel); box-shadow: 0 16px 50px rgba(0,0,0,.18);
  padding: 20px;
}
.card h3 { margin: 0 0 8px; font-size: 14px; color: var(--muted); font-weight: 600; }
.metric { font-size: 28px; font-weight: 800; letter-spacing: -.03em; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 0 0 14px; }
.search { min-width: 260px; flex: 1; }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 18px; }
table { width: 100%; border-collapse: collapse; min-width: 820px; background: rgba(255,255,255,.02); }
th, td { padding: 13px 14px; text-align: left; border-bottom: 1px solid rgba(255,255,255,.07); vertical-align: top; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
td { font-size: 14px; }
.badge { display: inline-flex; border-radius: 999px; padding: 5px 9px; font-size: 12px; font-weight: 700; background: rgba(255,255,255,.08); color: var(--muted); }
.badge.active, .badge.paid, .badge.paid_with_balance { color: #c9ffe9; background: rgba(39,192,138,.18); }
.badge.pending, .badge.partially_paid_with_balance { color: #ffe9bd; background: rgba(216,182,107,.18); }
.badge.overdue, .badge.cancelled, .badge.refunded, .badge.inactive { color: #ffd0d0; background: rgba(255,104,104,.16); }
.actions { display: flex; flex-wrap: wrap; gap: 7px; }
.notice { border: 1px solid rgba(216,182,107,.24); border-radius: 16px; padding: 14px; background: rgba(216,182,107,.08); color: #f9e9bf; }
.toast {
  position: fixed; right: 18px; bottom: 18px; z-index: 50;
  max-width: 420px; padding: 14px 16px; border-radius: 14px; background: #142033; border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.62); display: grid; place-items: center; padding: 20px; z-index: 40; }
.modal { width: min(680px, 100%); max-height: 90vh; overflow: auto; border-radius: 22px; background: #0d1420; border: 1px solid var(--line); padding: 22px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.risk { color: #dfd3b4; font-size: 12px; line-height: 1.55; }
.hide { display: none !important; }

@media (max-width: 980px) {
  .auth-shell, .app-shell { grid-template-columns: 1fr; }
  .auth-hero { min-height: 40vh; padding: 28px; }
  .sidebar { position: static; height: auto; }
  .nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.cards, .grid.two { grid-template-columns: 1fr; }
  .main { padding: 18px; }
  .split { grid-template-columns: 1fr; }
}