:root {
  --canvas:    #0e0e0b;
  --elevated:  #1c1c16;
  --high:      #282820;
  --hairline:  #2e2e24;
  --fire:      #e8631a;
  --ember:     #f4a935;
  --ink:       #ffffff;
  --body:      #8c8c82;
  --body-str:  #d4d4c8;
  --muted:     #5a5a52;
  --success:   #28a745;
  --danger:    #dc3545;
  --sidebar-w: 220px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', system-ui, sans-serif; background: var(--canvas); color: var(--ink); min-height: 100vh; display: flex; -webkit-font-smoothing: antialiased; }

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--elevated);
  border-right: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand {
  padding: 20px 16px;
  border-bottom: 1px solid var(--hairline);
}
.sidebar-brand .logo { font-size: 13px; font-weight: 900; letter-spacing: 2px; text-transform: uppercase; color: var(--fire); }
.sidebar-brand .sub  { font-size: 10px; color: var(--muted); letter-spacing: 1px; text-transform: uppercase; margin-top: 2px; }

.sidebar nav { flex: 1; padding: 12px 0; }
.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--body);
  text-decoration: none;
  letter-spacing: .3px;
  transition: all .15s;
  border-left: 3px solid transparent;
}
.sidebar nav a:hover  { color: var(--ink); background: var(--high); }
.sidebar nav a.active { color: var(--ink); border-left-color: var(--fire); background: var(--high); }
.sidebar nav .nav-icon { width: 16px; text-align: center; }

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--hairline);
  font-size: 12px;
  color: var(--muted);
}
.sidebar-footer a { color: var(--fire); text-decoration: none; font-weight: 600; }

/* ── Main content ── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  background: var(--elevated);
  border-bottom: 1px solid var(--hairline);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar h1 { font-size: 18px; font-weight: 700; letter-spacing: .5px; }
.topbar .user-info { font-size: 13px; color: var(--body); }
.topbar .user-info strong { color: var(--ink); }

.content { padding: 28px; }

/* ── Cards / stat boxes ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 28px; }
.stat-card {
  background: var(--elevated);
  border: 1px solid var(--hairline);
  border-top: 3px solid var(--fire);
  padding: 20px;
}
.stat-card .num  { font-size: 36px; font-weight: 900; color: var(--fire); line-height: 1; }
.stat-card .lbl  { font-size: 11px; font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase; color: var(--muted); margin-top: 4px; }

/* ── Tables ── */
.table-wrap { background: var(--elevated); border: 1px solid var(--hairline); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  background: var(--high);
  padding: 10px 14px;
  text-align: left;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--hairline);
  white-space: nowrap;
}
tbody tr { border-bottom: 1px solid var(--hairline); transition: background .1s; }
tbody tr:hover { background: var(--high); }
tbody td { padding: 10px 14px; color: var(--body-str); vertical-align: middle; }
tbody td:first-child { color: var(--ink); font-weight: 600; }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; font-size: 12px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; text-decoration: none; cursor: pointer; border: none; transition: all .15s; }
.btn-primary  { background: var(--fire); color: #fff; }
.btn-primary:hover { background: #c4521e; }
.btn-ghost    { background: transparent; color: var(--ink); border: 1px solid var(--hairline); }
.btn-ghost:hover { border-color: var(--body); }
.btn-danger   { background: var(--danger); color: #fff; }
.btn-success  { background: var(--success); color: #fff; }
.btn-sm       { padding: 5px 10px; font-size: 11px; }

/* ── Forms ── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--high);
  border: 1px solid var(--hairline);
  color: var(--ink);
  padding: 10px 12px;
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--fire); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select option { background: var(--high); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Alerts ── */
.alert { padding: 12px 16px; font-size: 13px; margin-bottom: 20px; }
.alert-success { background: #0d2b14; border: 1px solid var(--success); color: #6fcf97; }
.alert-danger  { background: #2b0d0d; border: 1px solid var(--danger);  color: #f4a6a6; }
.alert-info    { background: #0d1f2b; border: 1px solid #3498db;         color: #87ceeb; }

/* ── Section header ── */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; flex-wrap: wrap; gap: 12px; }
.section-header h2 { font-size: 16px; font-weight: 700; letter-spacing: .5px; }
.section-header .actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ── Login page ── */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--canvas); }
.login-box { width: 100%; max-width: 400px; padding: 40px; background: var(--elevated); border: 1px solid var(--hairline); }
.login-box .logo { font-size: 12px; font-weight: 900; letter-spacing: 2.5px; text-transform: uppercase; color: var(--fire); margin-bottom: 4px; }
.login-box h1 { font-size: 24px; font-weight: 700; margin-bottom: 28px; }

/* ── Modal ── */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.7); z-index: 200; align-items: center; justify-content: center; }
.modal-overlay.open { display: flex; }
.modal-box { background: var(--elevated); border: 1px solid var(--hairline); padding: 28px; width: 100%; max-width: 540px; max-height: 85vh; overflow-y: auto; }
.modal-box h3 { font-size: 16px; font-weight: 700; margin-bottom: 20px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { width: 100%; height: auto; position: relative; }
  .main { margin-left: 0; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}