:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --ink: #0a0a0a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #0d9488;
  --accent-ink: #ffffff;
  --danger: #dc2626;
  --success: #059669;
  --warning: #d97706;
  --sidebar-w: 240px;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.04);
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, #0a0a0a 0%, #134e4a 55%, #0d9488 100%);
  padding: 24px;
}
.login-card {
  width: 100%; max-width: 400px; background: var(--surface); border-radius: 16px;
  padding: 32px; box-shadow: var(--shadow);
}
.login-card h1 { margin: 0 0 4px; font-size: 1.5rem; }
.login-card .sub { color: var(--muted); margin-bottom: 24px; font-size: .9rem; }

.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w); background: #0a0a0a; color: #fff; padding: 20px 14px;
  display: flex; flex-direction: column; gap: 4px; position: sticky; top: 0; height: 100vh;
}
.sidebar .brand {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px 20px;
  font-weight: 700; letter-spacing: -.02em;
}
.sidebar .brand .mark {
  width: 28px; height: 28px; border-radius: 8px; background: var(--accent);
  display: grid; place-items: center; font-size: .85rem; color: #fff;
}
.sidebar a.nav {
  color: #d1d5db; padding: 10px 12px; border-radius: 8px; font-size: .92rem;
  display: block;
}
.sidebar a.nav:hover, .sidebar a.nav.active {
  background: rgba(13,148,136,.18); color: #fff; text-decoration: none;
}
.sidebar .foot { margin-top: auto; padding: 12px; font-size: .8rem; color: #9ca3af; }

.main { flex: 1; padding: 28px 32px; max-width: 1200px; }
.page-title { margin: 0 0 4px; font-size: 1.6rem; letter-spacing: -.02em; }
.page-sub { color: var(--muted); margin: 0 0 24px; }

.kpi-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px; margin-bottom: 28px;
}
.kpi {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow);
}
.kpi .label { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.kpi .value { font-size: 1.7rem; font-weight: 700; margin-top: 6px; letter-spacing: -.03em; }
.kpi .value .currency { color: var(--accent); font-size: 1rem; margin-inline-end: 4px; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); margin-bottom: 18px;
}
.card h2 { margin: 0 0 14px; font-size: 1.05rem; }

.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th, .table td { text-align: start; padding: 10px 8px; border-bottom: 1px solid var(--border); }
.table th { color: var(--muted); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
.table tr:hover td { background: #f9fafb; }

.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: .75rem; font-weight: 600;
  background: #f3f4f6; color: #374151;
}
.badge.trial { background: #ecfeff; color: #0e7490; }
.badge.active { background: #ecfdf5; color: #047857; }
.badge.past_due, .badge.danger { background: #fef2f2; color: #b91c1c; }
.badge.canceled { background: #f3f4f6; color: #6b7280; }
.badge.open, .badge.draft { background: #fffbeb; color: #b45309; }
.badge.paid, .badge.success { background: #ecfdf5; color: #047857; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border);
  background: #fff; color: var(--ink); padding: 8px 14px; border-radius: 8px;
  font-size: .9rem; cursor: pointer; font-weight: 500;
}
.btn:hover { background: #f9fafb; text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(.95); background: var(--accent); color: #fff; }
.btn-danger { background: #fff; border-color: #fecaca; color: var(--danger); }
.btn-sm { padding: 5px 10px; font-size: .8rem; }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font: inherit; background: #fff;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: 2px solid rgba(13,148,136,.35); border-color: var(--accent);
}
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: .9rem; }
.flash.success { background: #ecfdf5; color: #047857; }
.flash.danger { background: #fef2f2; color: #b91c1c; }
.flash.warning { background: #fffbeb; color: #b45309; }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.toolbar .spacer { flex: 1; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 800px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: relative; }
  .grid-2 { grid-template-columns: 1fr; }
}
[dir="rtl"] .table th, [dir="rtl"] .table td { text-align: right; }