:root {
  --brand: #112335;
  --brand-light: #1F4062;
  --accent: #AD863B;
  --accent-hover: #88692E;
  --info: #009BD1;
  --ok: #2A7D5B;
  --ok-bg: #e8f5ee;
  --warn: #C98A2E;
  --warn-bg: #fdf3e3;
  --critical: #B83A30;
  --critical-bg: #fbe9e7;
  --surface: #F0EDE6;
  --surface-raised: #FFFFFF;
  --surface-inset: #E8E4DB;
  --text: #1E2328;
  --text-secondary: #5A6069;
  --text-muted: #8A8F96;
  --border: #DDD8CC;
  --radius: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
}
@media (prefers-color-scheme: dark) {
  :root {
    --surface: #141618; --surface-raised: #1E2126; --surface-inset: #0D0E10;
    --text: #E4E5E7; --text-secondary: #A0A4AB; --text-muted: #6B7079;
    --border: #2E3238; --ok-bg: #152E22; --warn-bg: #2E2517; --critical-bg: #2E1714;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--surface); color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
}
a { color: var(--brand-light); }
h1, h2, h3, h4 { font-weight: 700; margin: 0 0 4px; text-wrap: balance; }
.muted { color: var(--text-secondary); }

/* Layout */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 272px; flex-shrink: 0; background: var(--brand); color: #EDEAE2;
  display: flex; flex-direction: column; padding: 20px 0;
}
.sidebar-brand {
  padding: 12px 20px 20px; display: flex; align-items: center;
}
.sidebar-brand-icon {
  background: #fff; border-radius: 10px; padding: 8px 12px;
  display: flex; align-items: center; width: 140px;
}
.sidebar-brand-icon img { width: 100%; height: auto; display: block; }
.nav-link {
  display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 20px; color: #D7DED9;
  text-decoration: none; font-size: 0.92rem; border-left: 3px solid transparent;
}
.nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav-link.active { background: rgba(255,255,255,0.1); border-left-color: var(--accent); color: #fff; font-weight: 600; }
.nav-section-label { padding: 16px 20px 6px; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: #8FA097; }
.nav-badge { background: var(--critical); color: #fff; font-size: 0.7rem; font-weight: 700; border-radius: 20px; padding: 1px 8px; }
.nav-link-main { display: flex; align-items: center; gap: 10px; min-width: 0; }
.nav-icon { width: 16px; height: 16px; flex-shrink: 0; display: flex; }
.nav-icon svg { width: 100%; height: 100%; }

.sidebar-footer { margin-top: auto; padding-top: 12px; border-top: 1px solid rgba(255,255,255,0.12); }
.footer-user { display: flex; align-items: center; gap: 10px; padding: 10px 16px; }
.footer-avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--brand-light); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.8rem;
  flex-shrink: 0; text-transform: uppercase;
}
.footer-avatar svg { width: 20px; height: 20px; }
.footer-user-info { flex: 1; min-width: 0; }
.footer-name { color: #fff; font-weight: 700; font-size: 0.86rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.footer-role { color: #9BB0A5; font-size: 0.68rem; letter-spacing: 0.05em; }
.footer-logout {
  background: none; border: none; color: #9BB0A5; cursor: pointer; padding: 6px;
  display: flex; align-items: center; justify-content: center; border-radius: 6px; flex-shrink: 0;
}
.footer-logout:hover { color: #fff; background: rgba(255,255,255,0.08); }

.main { flex: 1; min-width: 0; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px; background: var(--surface-raised); border-bottom: 1px solid var(--border);
}
.topbar h3 { margin: 0 0 2px; }
.topbar-subtitle { margin: 0; font-size: 0.85rem; color: var(--text-secondary); font-weight: 400; }
.content { padding: 28px; max-width: 1400px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface-raised); color: var(--text);
  font-size: 0.88rem; font-weight: 600; cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--text-muted); }
.btn-primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.btn-primary:hover { background: var(--brand-light); }
.btn-accent { background: var(--accent); color: #22190a; border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-hover); }
.btn-danger { background: var(--critical); color: #fff; border-color: var(--critical); }
.btn-sm { padding: 5px 10px; font-size: 0.78rem; }
.btn-icon { padding: 7px; }
.btn-icon svg { width: 15px; height: 15px; display: block; }

/* Cards */
.card { background: var(--surface-raised); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.card-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-body { padding: 20px; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 24px; }
.stat-tile { background: var(--surface-raised); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 16px 18px; }
.stat-tile .stat-value { font-size: 1.8rem; font-weight: 800; }
.stat-tile .stat-label { font-size: 0.8rem; color: var(--text-secondary); }
.stat-tile.ok .stat-value { color: var(--ok); }
.stat-tile.critical .stat-value { color: var(--critical); }
.stat-tile.warn .stat-value { color: var(--warn); }

.stations-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.station-card-header { padding: 14px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.station-type { font-size: 0.68rem; text-transform: uppercase; padding: 2px 8px; border-radius: 20px; background: var(--surface-inset); color: var(--text-secondary); }
.lane-row { display: flex; align-items: center; gap: 10px; padding: 8px 20px; border-bottom: 1px solid var(--border); }
.lane-row:last-child { border-bottom: none; }
.lane-label { font-weight: 700; font-size: 0.78rem; min-width: 40px; color: var(--text-secondary); }
.equip-dots { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.equip-dot {
  width: 26px; height: 26px; border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-size: 0.58rem; font-weight: 700; position: relative;
}
.equip-dot.operational { background: var(--ok); color: #fff; }
.equip-dot.defective { background: var(--critical); color: #fff; box-shadow: 0 0 0 3px var(--critical-bg); }
.equip-dot.maintenance { background: var(--warn); color: #fff; }
.equip-dot.not-checked { background: var(--surface-inset); color: var(--text-muted); border: 1px solid var(--border); }
.station-card-footer { padding: 10px 20px; border-top: 1px solid var(--border); font-size: 0.8rem; color: var(--text-secondary); display: flex; justify-content: space-between; }
.station-card-footer a { color: var(--info); font-weight: 600; }

/* Badges */
.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 0.72rem; font-weight: 700; }
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-critical { background: var(--critical-bg); color: var(--critical); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-muted { background: var(--surface-inset); color: var(--text-muted); }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--text-secondary); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:last-child td { border-bottom: none; }

/* Forms */
.form-group { margin-bottom: 16px; }
label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; }
input, select, textarea {
  width: 100%; padding: 9px 12px; border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--surface-raised); color: var(--text); font-size: 0.92rem;
}
textarea { resize: vertical; min-height: 70px; }
input[type="checkbox"] { width: auto; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 16px; }
.errorlist { color: var(--critical); font-size: 0.8rem; list-style: none; padding: 0; margin: 4px 0 0; }

.approval-row {
  display: flex; align-items: flex-end; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.approval-row:last-child { border-bottom: none; }
.approval-who { min-width: 200px; flex: 1; }
.approval-form { display: flex; align-items: flex-end; gap: 10px; }
.approval-form > div { min-width: 150px; }
.approval-form label, .approval-row label { font-size: 0.72rem; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 4px; }

.status-picker { display: flex; gap: 6px; flex-wrap: wrap; }
.status-pill {
  padding: 7px 14px; border-radius: 20px; border: 1px solid var(--border);
  background: var(--surface-inset); color: var(--text-muted); font-size: 0.8rem; font-weight: 600;
  cursor: pointer; transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.status-pill:hover { border-color: var(--text-muted); }
.status-pill.active.operational { background: var(--ok); border-color: var(--ok); color: #fff; }
.status-pill.active.maintenance { background: var(--warn); border-color: var(--warn); color: #fff; }
.status-pill.active.defective { background: var(--critical); border-color: var(--critical); color: #fff; }

.legend-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding: 14px 20px; margin-bottom: 20px; font-size: 0.82rem; color: var(--text-secondary); }
.legend-dot { width: 12px; height: 12px; border-radius: 3px; display: inline-block; margin-right: 6px; vertical-align: middle; }
.legend-dot.operational { background: var(--ok); }
.legend-dot.defective { background: var(--critical); }
.legend-dot.maintenance { background: var(--warn); }
.legend-dot.not-checked { background: var(--surface-inset); border: 1px solid var(--border); }
.legend-sep { width: 1px; height: 16px; background: var(--border); }

/* Modal */
dialog.modal {
  border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
  padding: 0; width: 100%; max-width: 480px; background: var(--surface-raised); color: var(--text);
}
dialog.modal::backdrop { background: rgba(0,0,0,0.45); }
dialog.modal .card-header h3 { margin: 0; font-size: 1.05rem; }
dialog.modal .card-body { padding: 20px; }
dialog.modal .modal-actions { display: flex; gap: 10px; margin-top: 4px; }
dialog.modal.modal-lg { max-width: 640px; }
dialog.modal.modal-xl { max-width: 760px; }
dialog.modal .modal-section { margin-bottom: 16px; }
dialog.modal .modal-section:last-child { margin-bottom: 0; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; flex-wrap: wrap; }
.tab-btn {
  padding: 9px 16px; border: none; background: none; font-weight: 600; font-size: 0.85rem;
  color: var(--text-secondary); border-bottom: 2px solid transparent; cursor: pointer;
}
.tab-btn.active { color: var(--brand-light); border-bottom-color: var(--accent); }
.tab-panel[hidden] { display: none; }

.messages { list-style: none; padding: 0; margin: 0 0 16px; }
.messages li { padding: 10px 16px; border-radius: var(--radius); margin-bottom: 8px; font-size: 0.88rem; }
.messages .success { background: var(--ok-bg); color: var(--ok); }
.messages .error { background: var(--critical-bg); color: var(--critical); }
.messages .info, .messages .warning { background: var(--warn-bg); color: var(--warn); }

.impersonation-banner {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 24px; background: var(--warn-bg); color: var(--warn); font-size: 0.85rem; font-weight: 600;
}

.login-screen { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; }
.login-card {
  background: var(--surface-raised); border: 1px solid var(--border); border-radius: 20px;
  box-shadow: var(--shadow-md); width: 100%; max-width: 440px; padding: 40px 36px;
}
.login-brand { display: flex; align-items: center; gap: 14px; margin-bottom: 32px; }
.login-brand-icon {
  width: 52px; height: 52px; background: #fff; border-radius: 14px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; padding: 4px;
}
.login-brand-icon img { width: 100%; height: 100%; object-fit: contain; display: block; }
.login-brand h2 { font-size: 1.3rem; }
.login-subtitle { color: var(--text-secondary); font-size: 0.85rem; margin-top: 2px; }
.login-card label {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-secondary);
}
.login-card input { background: var(--surface-inset); border-color: var(--surface-inset); padding: 12px 14px; }
.login-card input:focus { outline: none; border-color: var(--accent); background: var(--surface-raised); }
.login-card .btn-primary { padding: 12px 16px; border-radius: 10px; font-size: 0.95rem; margin-top: 6px; }
.login-footer { margin-top: 24px; font-size: 0.85rem; color: var(--text-secondary); text-align: center; }
.login-footer a { color: var(--accent); font-weight: 700; text-decoration: underline; }

.pagination { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 14px 20px; }
.page-link {
  padding: 6px 14px; border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--surface-raised); color: var(--text); font-size: 0.82rem; font-weight: 600;
  text-decoration: none;
}
.page-link:hover { border-color: var(--accent); color: var(--accent); }
.page-link.disabled { color: var(--text-muted); pointer-events: none; opacity: 0.5; }
.page-info { font-size: 0.8rem; color: var(--text-secondary); }

@media print {
  .sidebar, .topbar, .no-print { display: none !important; }
  .main, .content { padding: 0; margin: 0; }
  body { background: #fff; }
}