:root {
  --bg: #f8fafc;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-input: #ffffff;
  --border: #e2e8f0;
  --border-light: #cbd5e1;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --accent: #0284c7;
  --accent-hover: #0369a1;
  --accent-soft: rgba(2, 132, 199, 0.1);
  --success: #16a34a;
  --success-soft: rgba(22, 163, 74, 0.1);
  --warning: #d97706;
  --warning-soft: rgba(217, 119, 6, 0.1);
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-soft: rgba(220, 38, 38, 0.1);
  --purple: #7c3aed;
  --purple-soft: rgba(124, 58, 237, 0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.05);
  --sidebar-width: 260px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ---------- Layout shell ---------- */

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 24px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: #04121f; font-size: 16px; flex-shrink: 0;
}
.brand-name { font-weight: 700; font-size: 14px; color: var(--text-primary); }
.brand-sub { font-size: 11px; color: var(--text-muted); }

.nav-section-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--text-muted); padding: 16px 12px 6px;
}

.nav-links { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.nav-link {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px;
  border-radius: var(--radius-sm); color: var(--text-secondary);
  text-decoration: none; font-size: 13.5px; font-weight: 500;
  transition: background .12s, color .12s;
}
.nav-link svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-link:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.nav-link.active { background: var(--accent-soft); color: var(--accent); }

.sidebar-footer { border-top: 1px solid var(--border); padding-top: 14px; margin-top: 14px; }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 6px 8px; margin-bottom: 6px; }
.avatar {
  width: 32px; height: 32px; border-radius: 50%; background: var(--bg-card-hover);
  color: var(--text-primary); display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 13px; flex-shrink: 0; border: 1px solid var(--border-light);
}
.user-meta { min-width: 0; }
.user-name {
  font-size: 13px; font-weight: 600; color: var(--text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 150px;
}
.role-badge {
  display: inline-block; font-size: 10.5px; padding: 1px 7px; border-radius: 20px;
  margin-top: 2px; text-transform: capitalize;
}
.role-badge.superadmin { background: var(--purple-soft); color: var(--purple); }
.role-badge.user { background: var(--bg-card-hover); color: var(--text-secondary); }

.logout-link {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px;
  border-radius: var(--radius-sm); color: var(--text-secondary);
  text-decoration: none; font-size: 13.5px; font-weight: 500;
}
.logout-link svg { width: 18px; height: 18px; }
.logout-link:hover { background: var(--danger-soft); color: var(--danger); }

.sidebar-toggle { display: none; }
.sidebar-backdrop { display: none; }

.main-content { flex: 1; min-width: 0; padding: 28px 36px; max-width: 1180px; }

.page-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 16px; margin-bottom: 24px; flex-wrap: wrap;
}
.page-header h1 { font-size: 22px; margin: 0 0 4px; font-weight: 700; letter-spacing: -.01em; }
.page-subtitle { color: var(--text-secondary); font-size: 13.5px; margin: 0; }

/* ---------- Cards ---------- */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; margin-bottom: 24px; }
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow-card);
}
.card .label { font-size: 11.5px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .06em; font-weight: 600; }
.card .value { font-size: 30px; font-weight: 700; margin-top: 6px; letter-spacing: -.02em; }
.card .sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.card.warn .value { color: var(--warning); }
.card.crit .value { color: var(--danger); }

.chart-wrap {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow-card); height: 340px;
}
.chart-wrap canvas { max-height: 100%; }

/* ---------- Focus / fullscreen mode (dashboard) ---------- */

body.focus-mode .sidebar,
body.focus-mode .sidebar-toggle,
body.focus-mode .sidebar-backdrop {
  display: none !important;
}
body.focus-mode .main-content {
  max-width: 100%;
  padding: 28px 40px;
}
body.focus-mode .cards {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}
body.focus-mode .card { padding: 24px; }
body.focus-mode .card .value { font-size: 42px; }
body.focus-mode .card .label { font-size: 12.5px; }
body.focus-mode .chart-wrap { height: calc(100vh - 260px); min-height: 320px; padding: 28px; }

section {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; margin-bottom: 20px; box-shadow: var(--shadow-card);
}
section h2 { font-size: 13px; margin: 0 0 4px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-secondary); font-weight: 700; }
.hint { color: var(--text-muted); font-size: 12.5px; margin: 0 0 16px; line-height: 1.5; }

/* ---------- Forms ---------- */

label { display: block; font-size: 12.5px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
input[type=text], input[type=email], input[type=password], input[type=number], textarea, select {
  width: 100%; box-sizing: border-box; padding: 9px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-light); background: var(--bg-input); color: var(--text-primary);
  font-size: 13.5px; font-family: inherit; transition: border-color .12s;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); }
textarea { font-family: ui-monospace, "SF Mono", monospace; font-size: 12px; min-height: 90px; resize: vertical; }

.row { display: flex; gap: 14px; margin-bottom: 10px; flex-wrap: wrap; }
.field { flex: 1; min-width: 160px; }
.field.small { flex: 0 0 90px; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex; align-items: center; gap: 6px; border: none; border-radius: var(--radius-sm);
  padding: 9px 16px; font-weight: 600; font-size: 13px; cursor: pointer;
  transition: background .12s, opacity .12s; font-family: inherit;
}
.btn-primary { background: var(--accent); color: #ffffff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger-soft); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-ghost { background: var(--bg-card-hover); color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); }
.btn-sm { padding: 6px 11px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Tags / chips ---------- */

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.tag {
  background: var(--bg-input); border: 1px solid var(--border-light); border-radius: 20px;
  padding: 5px 12px; font-size: 12.5px; display: flex; align-items: center; gap: 8px;
}
.tag button { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 15px; padding: 0; line-height: 1; }
.add-row { display: flex; gap: 8px; }
.add-row input { flex: 1; }

/* ---------- Tables ---------- */

.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 480px; }
thead th {
  text-align: left; padding: 11px 14px; background: var(--bg-sidebar); color: var(--text-secondary);
  font-size: 11.5px; text-transform: uppercase; letter-spacing: .05em; font-weight: 600;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
tbody td { padding: 11px 14px; border-bottom: 1px solid var(--border); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-card-hover); }

.empty { color: var(--text-muted); font-size: 13px; padding: 24px; text-align: center; }

.status-msg {
  font-size: 13px; margin-top: 12px; padding: 10px 14px; border-radius: var(--radius-sm);
  display: none; word-break: break-word;
}
.status-msg.show { display: block; }
.status-msg.success { background: var(--success-soft); color: var(--success); }
.status-msg.error { background: var(--danger-soft); color: var(--danger); }
.status-msg.loading { background: var(--bg-card-hover); color: var(--text-secondary); }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .sidebar {
    position: fixed; left: 0; top: 0; height: 100vh; z-index: 40;
    transform: translateX(-100%); transition: transform .2s ease;
    box-shadow: 4px 0 24px rgba(0, 0, 0, .4);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle {
    display: flex; align-items: center; justify-content: center;
    position: fixed; top: 14px; left: 14px; z-index: 50;
    width: 38px; height: 38px; border-radius: 10px;
    background: var(--bg-card); border: 1px solid var(--border);
    color: var(--text-primary); cursor: pointer;
  }
  .sidebar-toggle svg { width: 20px; height: 20px; }
  .sidebar-backdrop {
    display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, .5); z-index: 30;
  }
  .sidebar-backdrop.show { display: block; }
  .main-content { padding: 72px 16px 28px; max-width: 100%; }
  .page-header { flex-direction: column; }
  .row { flex-direction: column; }
  .field.small { flex: 1 1 auto; }
}