:root {
  --bg: #0f1117;
  --bg2: #1a1d26;
  --bg3: #222636;
  --border: #2d3148;
  --accent: #e63946;
  --accent-hover: #c1121f;
  --success: #22c55e;
  --warning: #f59e0b;
  --info: #3b82f6;
  --text: #e2e8f0;
  --text-muted: #8892a4;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ── Cards ── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

/* ── Inputs ── */
input, select, textarea {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--text);
  font-size: 14px;
  padding: 10px 14px;
  width: 100%;
  outline: none;
  transition: border-color .2s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
input::placeholder { color: var(--text-muted); }
label { font-size: 13px; color: var(--text-muted); display: block; margin-bottom: 5px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  border-radius: 7px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  transition: opacity .15s, transform .1s;
}
.btn:active { transform: scale(.98); }
.btn:hover { opacity: .9; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #000; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-sm { font-size: 12px; padding: 6px 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ── Badges ── */
.badge {
  display: inline-block;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  text-transform: uppercase;
  letter-spacing: .4px;
}
.badge-pending  { background: rgba(245,158,11,.15); color: var(--warning); }
.badge-approved { background: rgba(34,197,94,.15); color: var(--success); }
.badge-paid     { background: rgba(59,130,246,.15); color: var(--info); }
.badge-cancelled, .badge-rejected { background: rgba(230,57,70,.15); color: var(--accent); }
.badge-active   { background: rgba(34,197,94,.15); color: var(--success); }
.badge-blocked  { background: rgba(230,57,70,.15); color: var(--accent); }
.badge-reversed { background: rgba(139,92,246,.15); color: #a78bfa; }

/* ── Stat cards ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.stat-card .label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; }
.stat-card .value { font-size: 1.8rem; font-weight: 700; margin-top: 4px; }
.stat-card .sub   { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.stat-card.accent { border-color: var(--accent); }

/* ── Table ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { color: var(--text-muted); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
td { padding: 12px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg3); }

/* ── Nav sidebar ── */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  padding: 0 0 20px;
}
.sidebar-logo {
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-logo span { color: var(--accent); font-size: 1.3rem; }

.nav-section { padding: 16px 12px 4px; font-size: 10px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: .8px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  margin: 2px 8px;
  border-radius: 7px;
  color: var(--text-muted);
  font-size: 14px;
  cursor: pointer;
  transition: background .15s, color .15s;
  text-decoration: none;
}
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: rgba(230,57,70,.12); color: var(--accent); font-weight: 600; }
.nav-item .icon { font-size: 16px; width: 20px; text-align: center; }

.nav-badge { margin-left: auto; background: var(--accent); color: #fff; border-radius: 10px; font-size: 10px; font-weight: 700; padding: 2px 7px; }

.sidebar-footer { margin-top: auto; padding: 12px 8px 0; border-top: 1px solid var(--border); }

/* ── Main content ── */
.main-content { flex: 1; padding: 28px 32px; overflow: auto; }

.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.page-title { font-size: 1.3rem; font-weight: 700; }

/* ── Alert ── */
.alert { border-radius: 7px; padding: 12px 16px; margin-bottom: 16px; font-size: 14px; }
.alert-error   { background: rgba(230,57,70,.1); border: 1px solid rgba(230,57,70,.3); color: #fca5a5; }
.alert-success { background: rgba(34,197,94,.1); border: 1px solid rgba(34,197,94,.3); color: #86efac; }
.alert-info    { background: rgba(59,130,246,.1); border: 1px solid rgba(59,130,246,.3); color: #93c5fd; }

/* ── Modal ── */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.7); z-index: 100; display: flex; align-items: center; justify-content: center; }
.modal { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; width: 100%; max-width: 480px; }
.modal-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; }

/* ── Forms ── */
.form-group { margin-bottom: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ── Utilities ── */
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.flex { display: flex; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.text-muted { color: var(--text-muted); font-size: 13px; }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-accent  { color: var(--accent); }
.fw-bold { font-weight: 700; }
.hidden { display: none !important; }

/* ── Link box ── */
.link-box {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 10px 14px;
  font-family: monospace;
  font-size: 13px;
  word-break: break-all;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

/* ── Login page ── */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); padding: 20px; }
.login-box { background: var(--bg2); border: 1px solid var(--border); border-radius: 14px; padding: 40px 36px; width: 100%; max-width: 400px; }
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo img { height: 50px; }
.login-logo h1 { font-size: 1.2rem; font-weight: 700; margin-top: 10px; }
.login-logo p { color: var(--text-muted); font-size: 13px; }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}