:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-2: #243044;
  --text: #e8edf4;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --ok: #22c55e;
  --warn: #f59e0b;
  --critical: #ef4444;
  --border: #2d3a4f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

header h1 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  font-size: 1.35rem;
  font-weight: 600;
}

header h1 .icon {
  color: var(--accent);
  flex-shrink: 0;
}

header nav a {
  margin-left: 1rem;
  color: var(--muted);
}

header nav a.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
}

header nav a.active,
header nav a:hover {
  color: var(--text);
}

header nav a.active .icon {
  color: var(--accent);
}

/* ── Icons ── */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  flex-shrink: 0;
}

.icon-xs {
  width: 0.8em;
  height: 0.8em;
}

.icon-sm {
  width: 0.95em;
  height: 0.95em;
}

.icon-md {
  width: 1.15em;
  height: 1.15em;
}

.icon-lg {
  width: 1.35em;
  height: 1.35em;
}

.btn-icon,
.panel-expand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon .icon,
.panel-expand .icon {
  width: 1rem;
  height: 1rem;
}

.btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  font-size: 0.85rem;
}

.btn-sm .icon {
  width: 0.9rem;
  height: 0.9rem;
}

.sys-label,
.sys-section > .sys-label,
.section h2 {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.sys-label .icon,
.section h2 .icon {
  color: var(--muted);
  flex-shrink: 0;
}

.panel-header h2 {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.panel-header h2 .icon {
  color: var(--muted);
  flex-shrink: 0;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.meta-item .icon {
  color: var(--muted);
}

.sys-badge {
  gap: 0.25rem;
}

.sys-badge .icon-xs {
  margin-right: 0.1rem;
}

.sys-badge-hdd {
  background: rgba(139, 156, 179, 0.15);
  color: #b8c5d9;
}

.sys-badge-ssd {
  background: rgba(34, 197, 94, 0.15);
  color: #86efac;
}

.sys-badge-nvme {
  background: rgba(168, 85, 247, 0.15);
  color: #c4b5fd;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
}

.status-badge .icon {
  flex-shrink: 0;
}

.status-badge.status-ok,
.status-badge.status-online {
  color: var(--ok);
}

.status-badge.status-warning {
  color: var(--warn);
}

.status-badge.status-critical,
.status-badge.status-error,
.status-badge.status-offline {
  color: var(--critical);
}

.status-badge.status-unknown {
  color: var(--muted);
}

.type-cell {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.type-cell .icon {
  color: var(--muted);
  flex-shrink: 0;
}

.th-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.hosts-table .status-badge {
  text-transform: capitalize;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.4rem;
  background: var(--muted);
}

.status-dot.ok { background: var(--ok); }
.status-dot.warning { background: var(--warn); }
.status-dot.critical { background: var(--critical); }
.status-dot.error { background: var(--critical); }

main {
  padding: 1.5rem;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols, 4), minmax(0, 1fr));
  grid-auto-rows: minmax(220px, auto);
  gap: 1rem;
  align-items: stretch;
  margin-bottom: 1rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  min-height: 240px;
  min-width: 0;
  grid-column: span 1;
  transition: box-shadow 0.2s ease;
}

.panel.panel-gauge,
.panel.panel-status,
.panel.panel-bar,
.panel.panel-line {
  min-height: 220px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  flex-shrink: 0;
  min-height: 1.75rem;
}

.panel-header h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.panel-expand {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  padding: 0;
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel-expand:hover {
  color: var(--text);
  border-color: var(--muted);
}

.panel.expanded {
  position: fixed;
  inset: 1rem;
  z-index: 1001;
  min-height: auto;
  height: calc(100vh - 2rem);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

.panel.expanded .panel-chart {
  min-height: 0;
  flex: 1;
}

.panel-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 1000;
  backdrop-filter: blur(2px);
}

.panel-backdrop[hidden] {
  display: none;
}

.panel-chart {
  flex: 1;
  min-height: 160px;
  width: 100%;
}

/* 1 колонка — мобильный (колонки пересчитываются в JS) */
@media (max-width: 767px) {
  .panel.expanded {
    inset: 0.5rem;
    height: calc(100vh - 1rem);
    border-radius: 10px;
  }
}

.period-select {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
  min-width: 7rem;
  width: auto;
}

.period-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.period-control span {
  flex-shrink: 0;
}

.meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.system-info {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
}

.system-info-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
}

.system-info-title .icon {
  color: var(--muted);
}

.system-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.sys-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
}

.sys-label {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 0.35rem;
}

.sys-value {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.sys-value-sm {
  font-size: 0.9rem;
  font-weight: 500;
}

.sys-sub {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.3;
}

.sys-disks {
  margin-top: 0.75rem;
}

.sys-disk {
  margin-top: 0.5rem;
  padding: 0.6rem 0.75rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.sys-disk-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

.sys-disk-name {
  font-weight: 600;
}

.sys-disk-meta {
  color: var(--muted);
  font-size: 0.8rem;
}

.sys-disk-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.sys-disk-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s ease;
}

.sys-disk-stats {
  margin-top: 0.35rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.sys-disk-device {
  font-size: 0.75rem;
  margin-bottom: 0.35rem;
}

.sys-card-wide {
  grid-column: span 2;
}

.sys-section {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.sys-list {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.sys-item {
  padding: 0.65rem 0.75rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.sys-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
}

.sys-item-title {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.sys-item-sub {
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.sys-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  margin-top: 0.45rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.sys-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.sys-badge-sm {
  font-size: 0.7rem;
}

.sys-progress {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 0.4rem;
}

.sys-progress-sm {
  height: 5px;
}

.sys-progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s ease;
}

.sys-progress-fill.warning {
  background: var(--warn);
}

.sys-progress-fill.critical {
  background: var(--critical);
}

.sys-inline-stat {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.sys-cores {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.45rem;
}

.sys-core {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 22px;
}

.sys-core-bar {
  width: 100%;
  height: 42px;
  background: var(--border);
  border-radius: 4px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.sys-core-fill {
  width: 100%;
  background: var(--accent);
  border-radius: 4px 4px 0 0;
  transition: height 0.3s ease;
}

.sys-core-label {
  margin-top: 0.15rem;
  font-size: 0.65rem;
  color: var(--muted);
}

.sys-empty {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.card-value {
  font-size: 2rem;
  font-weight: 700;
  margin: 0.5rem 0;
}

.card-unit {
  color: var(--muted);
  font-size: 1rem;
}

.settings-layout {
  max-width: 1280px;
  margin: 0 auto;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-row label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
  min-width: 180px;
}

.hint {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.muted {
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
}

.actions-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.params-input {
  min-width: 140px;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
  resize: vertical;
}

textarea {
  width: 100%;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.5rem;
}

.sensor-checks {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  max-height: 120px;
  overflow-y: auto;
  min-width: 160px;
}

.sensor-check {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  cursor: pointer;
}

.sensor-check input {
  width: auto;
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

.btn-icon:hover {
  color: var(--text);
  border-color: var(--muted);
}

.btn-danger:hover {
  color: var(--critical);
  border-color: var(--critical);
}

.section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.85rem;
}

input[type="text"],
input[type="password"],
input[type="number"],
select {
  width: 100%;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.5rem;
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1rem;
  font-size: 0.95rem;
  cursor: pointer;
}

.btn:hover {
  filter: brightness(1.08);
}

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}

.message {
  margin-top: 0.75rem;
  color: var(--ok);
  min-height: 1.2rem;
}

.message.error {
  color: var(--critical);
}


.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse at top, rgba(59, 130, 246, 0.14), transparent 55%),
    var(--bg);
}

.login-shell {
  width: min(100%, 26rem);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem 2rem 1.75rem;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.login-brand {
  text-align: center;
  margin-bottom: 1.75rem;
}

.login-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 0.75rem;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: #fff;
}

.login-logo .icon {
  width: 1.6rem;
  height: 1.6rem;
  color: #fff;
}

.login-card h1 {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.login-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.login-subtitle strong {
  color: var(--text);
  font-weight: 600;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.login-form label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.login-form input {
  width: 100%;
  padding: 0.7rem 0.8rem;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
}

.login-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.login-form input[readonly] {
  opacity: 0.85;
  cursor: default;
}

.login-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-weight: 600;
}

.login-submit .icon {
  width: 1.1rem;
  height: 1.1rem;
}

.login-error {
  margin: 0;
  text-align: center;
  min-height: 1.2rem;
}

@media (max-width: 900px) {
  .sys-card-wide {
    grid-column: span 1;
  }

  .period-control {
    margin-left: 0;
    width: 100%;
  }

  .period-control .period-select {
    flex: 1;
  }
}