:root {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --surface2: #f8fafc;
  --border: #e2e8f0;
  --border-dark: #cbd5e1;
  --text: #0f172a;
  --text-sm: #475569;
  --text-muted: #94a3b8;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --success: #10b981;
  --success-light: #ecfdf5;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow: 0 4px 16px rgba(0,0,0,.08);
  --radius: 10px;
  --radius-sm: 6px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
}

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

.sidebar {
  width: 220px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: 50;
}

.sidebar-logo {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo .brand {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-logo .version { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.sidebar-nav { flex: 1; padding: 12px 10px; }

.nav-section-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  padding: 12px 10px 6px;
  font-weight: 600;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-sm);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: all 0.15s;
  margin-bottom: 2px;
}
.nav-link:hover { background: var(--bg); color: var(--text); }
.nav-link.active { background: var(--primary-light); color: var(--primary); }
.nav-link .icon { font-size: 16px; width: 20px; text-align: center; }

.sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid var(--border);
}
.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg);
}
.user-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}
.user-name { font-size: 13px; font-weight: 600; }
.logout-link { font-size: 11px; color: var(--text-muted); text-decoration: none; }
.logout-link:hover { color: var(--danger); }

/* ── Main content ── */
.main { margin-left: 220px; flex: 1; }

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.page-title { font-size: 18px; font-weight: 700; color: var(--text); }
.page-subtitle { font-size: 12px; color: var(--text-muted); margin-top: 1px; }

.content { padding: 24px 28px; }

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title { font-size: 14px; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 8px; }
.card-body { padding: 20px; }

/* ── Stats ── */
.stats-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow-sm);
}
.stat-value { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px; margin-top: 4px; }

/* ── Forms ── */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 12px; font-weight: 600; color: var(--text-sm); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.6px; }
.field input[type="text"],
.field input[type="password"],
.field input[type="number"],
.field select,
input[type="text"],
input[type="password"],
input[type="number"],
select {
  background: var(--surface);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--text);
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
input:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.1);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(0.9); }
.btn-danger { background: transparent; border: 1px solid #fca5a5; color: var(--danger); }
.btn-danger:hover { background: var(--danger-light); }
.btn-outline { background: transparent; border: 1px solid var(--border-dark); color: var(--text-sm); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text); background: var(--bg); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11px; }

/* ── Table ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
}
tbody td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg); }

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge-active { background: var(--success-light); color: var(--success); }
.badge-inactive { background: #f1f5f9; color: var(--text-muted); }
.badge-primary { background: var(--primary-light); color: var(--primary); }

/* ── Toggle switch ── */
.switch { position: relative; display: inline-block; width: 40px; height: 22px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; cursor: pointer; inset: 0;
  background: #cbd5e1; border-radius: 22px; transition: 0.2s;
}
.slider::before {
  content: ''; position: absolute;
  height: 16px; width: 16px; left: 3px; bottom: 3px;
  background: white; border-radius: 50%; transition: 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
input:checked + .slider { background: var(--success); }
input:checked + .slider::before { transform: translateX(18px); }

/* ── Days/Hours picker ── */
.picker-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.pick-btn { display: none; }
.pick-btn + label {
  display: flex; align-items: center; justify-content: center;
  padding: 6px 10px;
  background: var(--surface2);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-sm);
  transition: all 0.15s;
  min-width: 40px;
  user-select: none;
}
.pick-btn:checked + label {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 700;
}

/* ── Toast ── */
.toast {
  position: fixed; bottom: 20px; right: 20px;
  background: var(--text); color: #fff;
  padding: 12px 18px; border-radius: var(--radius);
  font-size: 13px; display: none; z-index: 999;
  box-shadow: var(--shadow);
}

/* ── Empty state ── */
.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.empty-state .empty-icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ── Inline form row ── */
.form-row { display: grid; gap: 12px; align-items: end; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-row-4 { grid-template-columns: 1fr 1fr 1fr auto; }

/* ── Divider ── */
.divider { height: 1px; background: var(--border); margin: 20px 0; }

/* ── Hint text ── */
.hint { font-size: 11px; color: var(--text-muted); margin-top: 5px; }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row-4, .form-row-3, .form-row-2 { grid-template-columns: 1fr; }
}

/* ── Dark mode ───────────────────────────────────────────────────────────── */
[data-theme="dark"] {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface2: #162032;
  --border: #2d3f55;
  --border-dark: #3d5068;
  --text: #e2e8f0;
  --text-sm: #94a3b8;
  --text-muted: #64748b;
  --primary-light: #1e1b4b;
  --success-light: #064e3b;
  --danger-light: #450a0a;
  --warning-light: #451a03;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.4);
  --shadow: 0 4px 16px rgba(0,0,0,.4);
}
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
  background: var(--bg);
  color: var(--text);
  border-color: var(--border-dark);
}
[data-theme="dark"] .badge-inactive { background: #253047; }
[data-theme="dark"] tbody tr:hover td { background: #162032; }
[data-theme="dark"] .pick-btn + label { background: #1e293b; }
[data-theme="dark"] .user-info { background: #0f172a; }

/* ── RTL layout (applied when dir="rtl" on <html>) ───────────────────────── */
[dir="rtl"] .sidebar {
  left: auto; right: 0;
  border-right: none;
  border-left: 1px solid var(--border);
}
[dir="rtl"] .main { margin-left: 0; margin-right: 220px; }
[dir="rtl"] .toast { right: auto; left: 20px; }
@media (max-width: 768px) {
  [dir="rtl"] .main { margin-right: 0; }
}