:root {
  color-scheme: light;
  --app-bg: #eef2f6;
  --surface: #ffffff;
  --surface-soft: #f7f9fc;
  --surface-muted: #f1f5f9;
  --ink: #1f2937;
  --ink-strong: #0f172a;
  --muted: #64748b;
  --border: #dbe3ec;
  --border-strong: #c7d2df;
  --primary: #1f6feb;
  --primary-600: #185abc;
  --primary-soft: #e8f1ff;
  --nav: #111827;
  --nav-2: #172033;
  --nav-line: rgba(255, 255, 255, .08);
  --success: #16803c;
  --success-soft: #e8f7ee;
  --warning: #b76b00;
  --warning-soft: #fff4dc;
  --danger: #c6262e;
  --danger-soft: #fdebed;
  --info: #155eef;
  --info-soft: #e8f1ff;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .08);
  --shadow: 0 12px 30px rgba(15, 23, 42, .10);
  --sidebar-width: 286px;
  font-family: "Segoe UI", Inter, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --app-bg: #0b1020;
    --surface: #111827;
    --surface-soft: #172033;
    --surface-muted: #1e293b;
    --ink: #e5e7eb;
    --ink-strong: #ffffff;
    --muted: #a6b3c4;
    --border: #263244;
    --border-strong: #354258;
    --primary-soft: rgba(31, 111, 235, .18);
    --success-soft: rgba(22, 128, 60, .16);
    --warning-soft: rgba(183, 107, 0, .18);
    --danger-soft: rgba(198, 38, 46, .18);
    --info-soft: rgba(21, 94, 239, .16);
    --shadow: 0 16px 38px rgba(0, 0, 0, .38);
  }
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 20% -10%, rgba(31, 111, 235, .12), transparent 30%),
    linear-gradient(180deg, #f7f9fc 0, var(--app-bg) 260px, var(--app-bg) 100%);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-600); text-decoration: underline; }
img, svg { max-width: 100%; }

.app-shell { min-height: 100vh; display: flex; }
.sidebar {
  width: var(--sidebar-width);
  flex: 0 0 var(--sidebar-width);
  min-height: 100vh;
  padding: 18px 14px;
  background: linear-gradient(180deg, var(--nav) 0%, var(--nav-2) 100%);
  color: #d7dee9;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  box-shadow: 8px 0 24px rgba(15, 23, 42, .16);
}
.brand {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  align-items: center;
  padding: 8px 8px 18px;
  border-bottom: 1px solid var(--nav-line);
  margin-bottom: 14px;
}
.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #2f80ed, #00a3ff);
  font-weight: 900;
  letter-spacing: -.04em;
  box-shadow: 0 12px 24px rgba(31, 111, 235, .30);
}
.brand strong { display: block; color: #fff; font-size: 17px; letter-spacing: -.02em; }
.brand span { display: block; color: #9caac0; font-size: 12px; margin-top: 2px; }

.nav-section {
  margin: 18px 8px 8px;
  color: #7e8da4;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.nav { display: grid; gap: 3px; }
.nav a {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 38px;
  padding: 9px 11px;
  border-radius: 9px;
  color: #d7dee9;
  font-weight: 650;
  border: 1px solid transparent;
}
.nav a .nav-icon {
  width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  border-radius: 7px;
  background: rgba(255, 255, 255, .07);
  font-size: 13px;
}
.nav a:hover {
  background: rgba(255, 255, 255, .08);
  text-decoration: none;
  color: #fff;
}
.nav a.active {
  background: #fff;
  color: #111827;
  box-shadow: var(--shadow-sm);
}
.nav a.active .nav-icon {
  background: var(--primary-soft);
  color: var(--primary);
}
.sidebar-footer {
  margin: 18px 8px 0;
  padding-top: 14px;
  border-top: 1px solid var(--nav-line);
  display: grid;
  gap: 10px;
}
.sidebar-health {
  padding: 10px 11px;
  border-radius: 11px;
  background: rgba(255,255,255,.06);
  color: #c9d3e2;
  font-size: 12px;
}
.sidebar-health strong { display: block; color: #fff; margin-bottom: 2px; }
.logout-form { margin: 0; }
.logout-form button {
  width: 100%;
  justify-content: center;
  background: rgba(255,255,255,.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,.10);
}

.main { flex: 1; min-width: 0; }
.topbar {
  min-height: 84px;
  padding: 18px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
@media (prefers-color-scheme: dark) {
  .topbar { background: rgba(17, 24, 39, .82); }
}
.page-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 5px;
  color: var(--primary);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.topbar h1 {
  margin: 0;
  color: var(--ink-strong);
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -.03em;
}
.topbar p { margin: 5px 0 0; color: var(--muted); }
.topbar-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.user-pill {
  display: grid;
  gap: 2px;
  padding: 9px 12px;
  min-width: 220px;
  text-align: right;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.user-pill span { color: var(--ink-strong); font-weight: 800; }
.user-pill small { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mobile-nav-toggle { display: none; }

.content { padding: 26px 30px 34px; }
.notice {
  margin: 16px 30px 0;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(31,111,235,.28);
  background: var(--primary-soft);
  color: var(--ink-strong);
  font-weight: 650;
}

.card, .auth-card, .empty-state, .panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card, .auth-card, .empty-state { padding: 18px; }
.auth-card, .narrow { max-width: 680px; margin: 28px auto; }
.auth-card {
  box-shadow: var(--shadow);
  border-radius: 22px;
  overflow: hidden;
}
.auth-card::before {
  content: "";
  display: block;
  height: 5px;
  margin: -18px -18px 18px;
  background: linear-gradient(90deg, var(--primary), #00a3ff, #16a34a);
}
.empty-state { max-width: 760px; margin: 40px auto; text-align: center; }
.card + .card, .panel + .panel { margin-top: 16px; }

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}
.section-header h2, .section-header h3 { margin: 0; color: var(--ink-strong); letter-spacing: -.02em; }
.section-header p { margin: 4px 0 0; color: var(--muted); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.kpi-card {
  position: relative;
  overflow: hidden;
  min-height: 120px;
  padding: 17px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.kpi-card::after {
  content: "";
  position: absolute;
  inset: auto 16px 0 16px;
  height: 3px;
  border-radius: 999px 999px 0 0;
  background: var(--primary);
  opacity: .72;
}
.kpi-card.danger::after { background: var(--danger); }
.kpi-card.warning::after { background: var(--warning); }
.kpi-card.success::after { background: var(--success); }
.kpi-card span {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.kpi-card strong {
  display: block;
  margin-top: 10px;
  color: var(--ink-strong);
  font-size: 32px;
  line-height: 1;
  letter-spacing: -.04em;
}
.kpi-card small { display: block; margin-top: 9px; color: var(--muted); }
.kpi-card.danger strong { color: var(--danger); }
.kpi-card.warning strong { color: var(--warning); }
.kpi-card.success strong { color: var(--success); }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 12px;
  margin-bottom: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.quick-filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--ink);
  font-weight: 700;
  font-size: 12px;
}
.filter-chip strong { color: var(--ink-strong); }
.table-search {
  width: min(360px, 100%);
  position: relative;
}
.table-search input {
  padding-left: 36px;
  background: var(--surface);
}
.table-search::before {
  content: "⌕";
  position: absolute;
  left: 12px;
  top: 8px;
  color: var(--muted);
  font-weight: 800;
  z-index: 1;
}

.table-card { padding: 0; overflow: hidden; }
.table-card .table-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface), var(--surface-soft));
}
.table-title h3 { margin: 0; color: var(--ink-strong); }
.table-wrap { width: 100%; overflow-x: auto; }
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--surface);
}
th, td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}
th {
  position: sticky;
  top: 0;
  z-index: 1;
  color: var(--muted);
  background: var(--surface-soft);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: .045em;
}
tbody tr:hover { background: var(--primary-soft); }
tbody tr:last-child td { border-bottom: 0; }
td.row-title strong { color: var(--ink-strong); display: block; }
td.row-title small { color: var(--muted); display: block; margin-top: 2px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }
.muted { color: var(--muted); }
.text-danger { color: var(--danger) !important; font-weight: 800; }
.nowrap { white-space: nowrap; }

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 24px;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}
.badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--muted);
}
.badge.primary { color: var(--primary); background: var(--primary-soft); border-color: rgba(31,111,235,.25); }
.badge.success { color: var(--success); background: var(--success-soft); border-color: rgba(22,128,60,.25); }
.badge.warning { color: var(--warning); background: var(--warning-soft); border-color: rgba(183,107,0,.25); }
.badge.danger { color: var(--danger); background: var(--danger-soft); border-color: rgba(198,38,46,.25); }
.badge.info { color: var(--info); background: var(--info-soft); border-color: rgba(21,94,239,.25); }
.badge.primary::before { background: var(--primary); }
.badge.success::before { background: var(--success); }
.badge.warning::before { background: var(--warning); }
.badge.danger::before { background: var(--danger); }
.badge.info::before { background: var(--info); }

.progress {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
}
.progress > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), #00a3ff);
}

button, .button {
  border: 0;
  border-radius: 9px;
  min-height: 36px;
  padding: 9px 12px;
  background: var(--surface-muted);
  color: var(--ink);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  white-space: nowrap;
}
button:hover, .button:hover { text-decoration: none; filter: brightness(.98); }
.button.primary, button.primary {
  background: linear-gradient(180deg, var(--primary), var(--primary-600));
  color: #fff;
  box-shadow: 0 8px 18px rgba(31,111,235,.20);
}
.button.secondary, button.secondary {
  background: var(--surface);
  border: 1px solid var(--border-strong);
}
.button.ghost, button.ghost { background: transparent; border: 1px solid transparent; }
.button.danger, button.danger { background: var(--danger); color: white; }
.button.small, button.small { min-height: 30px; padding: 6px 9px; font-size: 12px; border-radius: 8px; }

.form-grid { display: grid; gap: 10px; }
.form-inline { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 12px; }
label { font-weight: 800; color: var(--ink-strong); }
input, select, textarea {
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  border-radius: 9px;
  font: inherit;
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31,111,235,.14);
}
textarea { resize: vertical; }
.inline-check { display: flex; align-items: center; gap: 8px; font-weight: 650; }
.inline-check input { width: auto; }

.validation, span.field-validation-error { color: var(--danger); font-weight: 700; }
.link-row { margin-top: 16px; display: flex; gap: 14px; flex-wrap: wrap; }
.code-box {
  margin-top: 14px;
  padding: 14px;
  border-radius: 12px;
  background: var(--surface-soft);
  border: 1px dashed var(--border-strong);
  overflow-wrap: anywhere;
}
.details-list {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 10px 14px;
  margin: 18px 0;
}
.details-list dt { color: var(--muted); font-weight: 800; }
.details-list dd { margin: 0; color: var(--ink-strong); }
.ticket-detail-header {
  display: grid;
  gap: 12px;
  padding: 18px;
  margin-bottom: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(135deg, var(--surface), var(--surface-soft));
}
.ticket-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.comment-list { display: grid; gap: 12px; margin-bottom: 16px; }
.comment {
  padding: 13px;
  border-radius: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
}
.comment strong { color: var(--ink-strong); }
.comment small { color: var(--muted); display: block; margin-top: 2px; }
.process-block {
  margin-bottom: 18px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.process-block h3 { margin: 0 0 12px; color: var(--ink-strong); }
.process-block h3 small { color: var(--muted); font-weight: 600; }

.status-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}
.status-strip .item {
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.status-strip .item span { display: block; color: var(--muted); font-size: 12px; font-weight: 750; text-transform: uppercase; }
.status-strip .item strong { display: block; margin-top: 4px; color: var(--ink-strong); font-size: 22px; }

@media (max-width: 1180px) {
  .kpi-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 1000px) {
  body.sidebar-open { overflow: hidden; }
  .app-shell { display: block; }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    transform: translateX(-102%);
    transition: transform .18s ease;
    z-index: 40;
  }
  body.sidebar-open .sidebar { transform: translateX(0); }
  .mobile-nav-toggle { display: inline-flex; }
  .topbar { align-items: flex-start; }
  .content { padding: 18px; }
  .grid-2, .status-strip { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .topbar { padding: 15px 18px; flex-direction: column; }
  .topbar-actions { width: 100%; justify-content: space-between; }
  .user-pill { min-width: 0; width: 100%; text-align: left; }
  .kpi-grid { grid-template-columns: 1fr; }
  .section-header { align-items: stretch; flex-direction: column; }
  .toolbar { align-items: stretch; }
  .table-search { width: 100%; }
  .details-list { grid-template-columns: 1fr; }
}