:root {
  --bg: #0e1318;
  --panel: rgba(18, 28, 36, 0.9);
  --panel-strong: #111b23;
  --panel-soft: #17242d;
  --line: rgba(150, 196, 219, 0.18);
  --line-strong: rgba(150, 196, 219, 0.34);
  --text: #eef6fa;
  --muted: #8ea2ae;
  --accent: #7df0c4;
  --accent-deep: #183930;
  --warn: #ffcb78;
  --danger: #ff8075;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.36);
  --radius: 24px;
  --radius-sm: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(125, 240, 196, 0.09), transparent 28%),
    radial-gradient(circle at bottom right, rgba(115, 176, 255, 0.11), transparent 32%),
    linear-gradient(135deg, #0b1116, #111920 44%, #0a1117 100%);
  color: var(--text);
  font-family: "Bahnschrift", "Segoe UI Variable Text", "Microsoft YaHei UI", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: radial-gradient(circle at center, black 48%, transparent 100%);
}

.shell {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  min-height: 100vh;
}

.hero {
  padding: 36px 28px;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 18, 24, 0.92), rgba(14, 19, 24, 0.82));
  backdrop-filter: blur(20px);
}

.hero__eyebrow {
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: "Palatino Linotype", "Book Antiqua", serif;
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.hero__lead {
  margin: 14px 0 28px;
  max-width: 34ch;
  color: var(--muted);
  line-height: 1.7;
}

.hero__status-grid {
  display: grid;
  gap: 14px;
  margin-bottom: 18px;
}

.metric-card,
.panel,
.subpanel,
.license-item,
.mini-stat {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.metric-card {
  padding: 18px;
  border-radius: var(--radius-sm);
}

.metric-card strong {
  display: block;
  margin-top: 8px;
  font-size: 22px;
}

.metric-card__label,
.metric-card__meta,
.panel__hint,
.field span,
.chip,
.license-item__meta,
.license-item__stats,
.subpanel__header h3,
.empty-state,
.log-item__meta {
  color: var(--muted);
}

.metric-card__meta {
  display: block;
  margin-top: 8px;
  font-size: 13px;
}

.panel {
  border-radius: var(--radius);
  padding: 22px;
}

.panel--auth {
  margin-top: 24px;
}

.panel__header,
.subpanel__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.panel__header h2,
.subpanel__header h3 {
  margin: 0;
  font-size: 18px;
}

.panel__header p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.workspace {
  padding: 32px;
  display: grid;
  gap: 22px;
}

.workspace__split {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(420px, 1.08fr);
  gap: 22px;
}

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

.field {
  display: grid;
  gap: 8px;
}

.field--full {
  grid-column: 1 / -1;
}

.field input,
.field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(11, 18, 23, 0.8);
  color: var(--text);
  padding: 13px 14px;
  font-size: 14px;
  outline: none;
}

.field input:focus,
.field select:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 4px rgba(125, 240, 196, 0.08);
}

.form-grid__actions,
.panel__actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.form-grid__actions {
  grid-column: 1 / -1;
  margin-top: 4px;
}

.button {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  background: linear-gradient(135deg, var(--accent), #a7f7dc);
  color: #0b1614;
}

.button--ghost {
  border-color: var(--line);
  background: rgba(10, 16, 21, 0.45);
  color: var(--text);
}

.button--danger {
  background: rgba(255, 128, 117, 0.12);
  border-color: rgba(255, 128, 117, 0.3);
  color: #ffd8d4;
}

.message-bar {
  min-height: 24px;
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--warn);
}

.license-list,
.device-list,
.log-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.license-item {
  width: 100%;
  padding: 16px;
  border-radius: 18px;
  text-align: left;
  cursor: pointer;
}

.license-item.is-active {
  border-color: rgba(125, 240, 196, 0.48);
  box-shadow: 0 0 0 1px rgba(125, 240, 196, 0.24), var(--shadow);
}

.license-item__top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.license-item__key {
  font-size: 15px;
  letter-spacing: 0.05em;
}

.license-item__badge,
.chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  font-size: 12px;
}

.license-item__badge.is-permanent {
  color: var(--accent);
  border-color: rgba(125, 240, 196, 0.24);
}

.license-item__badge.is-expiring {
  color: var(--warn);
}

.license-item__meta,
.license-item__stats {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
}

.detail-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.mini-stat {
  border-radius: 18px;
  padding: 16px;
}

.mini-stat span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mini-stat strong {
  display: block;
  margin-top: 12px;
  font-size: 20px;
}

.subpanel {
  border-radius: 20px;
  padding: 18px;
  margin-top: 18px;
  background: var(--panel-soft);
}

.device-card,
.log-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
  background: rgba(10, 16, 21, 0.5);
}

.device-card__top,
.log-item__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.device-card__title,
.log-item__title {
  font-weight: 700;
}

.device-card__meta,
.log-item__meta {
  margin-top: 8px;
  line-height: 1.6;
  font-size: 13px;
}

.device-card__badge.is-active,
.status-pill.is-ok {
  color: var(--accent);
}

.device-card__badge.is-disabled,
.status-pill.is-fail {
  color: var(--danger);
}

.empty-state {
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: 16px;
  text-align: center;
}

@media (max-width: 1180px) {
  .shell,
  .workspace__split,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .detail-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .workspace,
  .hero {
    padding: 20px;
  }

  .detail-metrics {
    grid-template-columns: 1fr;
  }
}