:root {
  --bg-body: #0d0d0f;
  --bg-panel: #161619;
  --bg-card: #1f1f23;
  --bg-card-hover: #2a2a2f;

  --accent: #ff7b00;
  --accent-hover: #e66e00;
  --accent-soft: rgba(255, 123, 0, 0.14);

  --water: #00a8ff;
  --ok: #39d98a;
  --warning: #ffb020;
  --alarm: #ff5c5c;
  --critical: #ff2d2d;
  --offline: #6b7280;

  --text-main: #ffffff;
  --text-soft: #c9c9d1;
  --text-sec: #8e8e93;
  --text-muted: #666672;

  --border-color: rgba(255, 255, 255, 0.065);
  --border-strong: rgba(255, 255, 255, 0.11);

  --shadow: 0 20px 60px rgba(0, 0, 0, 0.34);
  --shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.24);

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 11px;
}

html[data-theme="light"] {
  --bg-body: #f3f4f6;
  --bg-panel: #ffffff;
  --bg-card: #f7f7f8;
  --bg-card-hover: #eeeeef;

  --accent: #f97316;
  --accent-hover: #ea580c;
  --accent-soft: rgba(249, 115, 22, 0.12);

  --water: #0284c7;
  --ok: #16a34a;
  --warning: #d97706;
  --alarm: #dc2626;
  --critical: #b91c1c;
  --offline: #6b7280;

  --text-main: #111827;
  --text-soft: #374151;
  --text-sec: #6b7280;
  --text-muted: #9ca3af;

  --border-color: rgba(17, 24, 39, 0.08);
  --border-strong: rgba(17, 24, 39, 0.14);

  --shadow: 0 20px 60px rgba(31, 41, 55, 0.12);
  --shadow-soft: 0 12px 34px rgba(31, 41, 55, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg-body);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 123, 0, 0.08), transparent 35%),
    radial-gradient(circle at 85% 10%, rgba(0, 168, 255, 0.08), transparent 34%),
    var(--bg-body);
  color: var(--text-main);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  user-select: none;
}

a {
  color: inherit;
  text-decoration: none;
}

.hidden {
  display: none !important;
}

.mono {
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}

.demo-shell {
  width: min(100%, 1500px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px;
}

.demo-header {
  min-height: 78px;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto minmax(160px, 1fr);
  gap: 18px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--bg-panel) 92%, transparent);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 12px;
}

.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--border-strong);
  border-radius: 15px;
  background: linear-gradient(145deg, var(--bg-card-hover), var(--bg-card));
  color: var(--accent);
  font-size: 22px;
  font-weight: 900;
}

.brand-title {
  color: var(--text-main);
  font-size: 15px;
  font-weight: 850;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.brand-subtitle {
  margin-top: 3px;
  color: var(--text-sec);
  font-size: 12px;
  font-weight: 560;
}

.status-strip {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.top-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.chip {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-panel) 84%, transparent);
  color: var(--text-sec);
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 760;
  white-space: nowrap;
}

.chip.ok {
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 46%, var(--border-color));
  background: color-mix(in srgb, var(--ok) 10%, var(--bg-panel));
}

.chip.warn {
  color: var(--warning);
  border-color: color-mix(in srgb, var(--warning) 46%, var(--border-color));
  background: color-mix(in srgb, var(--warning) 10%, var(--bg-panel));
}

.chip.alarm {
  color: var(--alarm);
  border-color: color-mix(in srgb, var(--alarm) 46%, var(--border-color));
  background: color-mix(in srgb, var(--alarm) 10%, var(--bg-panel));
}

.chip.critical {
  color: var(--critical);
  border-color: color-mix(in srgb, var(--critical) 52%, var(--border-color));
  background: color-mix(in srgb, var(--critical) 12%, var(--bg-panel));
}

.chip.offline {
  color: var(--offline);
}

.demo-main {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.panel {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--bg-panel) 95%, transparent);
  box-shadow: var(--shadow-soft);
}

.panel.wide {
  grid-column: span 4;
}

.overview-panel {
  grid-column: span 2;
}

.ai-panel {
  grid-column: span 2;
}

.log-panel {
  grid-column: span 4;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.panel-head h1,
.panel-head h2 {
  margin: 0;
  font-weight: 850;
  letter-spacing: -0.03em;
}

.panel-head h1 {
  font-size: 25px;
}

.panel-head h2 {
  font-size: 18px;
}

.panel-head p {
  margin: 5px 0 0;
  color: var(--text-sec);
  font-size: 13px;
  line-height: 1.4;
}

.btn {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--bg-card);
  color: var(--text-soft);
  cursor: pointer;
  padding: 8px 13px;
  font-size: 13px;
  font-weight: 760;
  transition: 0.16s ease;
}

.btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
}

.btn.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #090909;
}

.btn.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn.accent {
  border-color: color-mix(in srgb, var(--accent) 65%, var(--border-strong));
  background: var(--accent-soft);
  color: var(--accent);
}

.btn.warn {
  border-color: color-mix(in srgb, var(--warning) 55%, var(--border-strong));
  background: color-mix(in srgb, var(--warning) 12%, var(--bg-card));
  color: var(--warning);
}

.btn.danger {
  border-color: color-mix(in srgb, var(--alarm) 55%, var(--border-strong));
  background: color-mix(in srgb, var(--alarm) 12%, var(--bg-card));
  color: var(--alarm);
}

.btn.ghost {
  background: transparent;
  color: var(--text-sec);
}

.btn.full {
  width: 100%;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.button-row .btn {
  flex: 1;
}

.button-row.spaced {
  margin: 14px 0;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.summary-card {
  min-height: 96px;
  padding: 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
}

.summary-card span {
  display: block;
  color: var(--text-sec);
  font-size: 11px;
  font-weight: 780;
}

.summary-card strong {
  display: block;
  margin-top: 9px;
  color: var(--text-main);
  font-size: 22px;
  font-weight: 880;
  letter-spacing: -0.04em;
}

.summary-card em {
  display: block;
  margin-top: 6px;
  color: var(--text-sec);
  font-size: 11px;
  font-style: normal;
}

.mode-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.target-grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  margin: 14px 0;
}

.field-grid {
  display: grid;
  gap: 11px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--text-sec);
  font-size: 11px;
  font-weight: 800;
}

input,
select {
  width: 100%;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  outline: none;
  background: var(--bg-card);
  color: var(--text-main);
}

input:focus,
select:focus {
  border-color: color-mix(in srgb, var(--accent) 60%, var(--border-strong));
}

.ai-summary {
  min-height: 66px;
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-sec);
  font-size: 13px;
  line-height: 1.45;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.scenario-card {
  min-height: 132px;
  padding: 15px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-soft);
  cursor: pointer;
  text-align: left;
  transition: 0.16s ease;
}

.scenario-card:hover {
  transform: translateY(-2px);
  background: var(--bg-card-hover);
}

.scenario-card strong {
  display: block;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 850;
}

.scenario-card span {
  display: block;
  margin-top: 8px;
  color: var(--text-sec);
  font-size: 12px;
  line-height: 1.4;
}

.scenario-card.warn {
  border-color: color-mix(in srgb, var(--warning) 38%, var(--border-color));
}

.scenario-card.alarm {
  border-color: color-mix(in srgb, var(--alarm) 44%, var(--border-color));
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
}

.speed-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
}

.demo-log {
  display: grid;
  gap: 9px;
  max-height: 410px;
  overflow: auto;
}

.log-item {
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
}

.log-item strong {
  display: block;
  font-size: 13px;
}

.log-item span {
  display: block;
  margin-top: 4px;
  color: var(--text-sec);
  font-size: 11px;
}

.log-item pre {
  max-height: 150px;
  overflow: auto;
  margin: 9px 0 0;
  padding: 9px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  color: var(--text-sec);
  font-size: 10px;
  line-height: 1.45;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 300;
  max-width: 420px;
  padding: 13px 15px;
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  background: var(--bg-panel);
  color: var(--text-main);
  box-shadow: var(--shadow);
  font-size: 13px;
  font-weight: 680;
}

.toast.ok {
  border-color: color-mix(in srgb, var(--ok) 45%, var(--border-strong));
}

.toast.warn {
  border-color: color-mix(in srgb, var(--warning) 45%, var(--border-strong));
}

.toast.alarm,
.toast.critical {
  border-color: color-mix(in srgb, var(--critical) 55%, var(--border-strong));
}

.modal-root {
  position: fixed;
  inset: 0;
  z-index: 250;
  display: grid;
  place-items: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.58);
  backdrop-filter: blur(6px);
}

.modal-window {
  position: relative;
  z-index: 1;
  width: min(92vw, 430px);
  padding: 18px;
  border: 1px solid var(--border-strong);
  border-radius: 22px;
  background: var(--bg-panel);
  box-shadow: var(--shadow);
}

.modal-title {
  font-size: 18px;
  font-weight: 860;
}

.modal-text {
  margin-top: 10px;
  color: var(--text-sec);
  font-size: 13px;
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 9px;
  margin-top: 18px;
}

@media (max-width: 1300px) {
  .demo-header {
    grid-template-columns: 1fr;
  }

  .status-strip,
  .top-actions {
    justify-content: flex-start;
  }

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

  .panel.wide,
  .overview-panel,
  .ai-panel,
  .log-panel {
    grid-column: span 2;
  }

  .scenario-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 760px) {
  .demo-shell {
    padding: 10px;
  }

  .demo-main {
    grid-template-columns: 1fr;
  }

  .panel.wide,
  .overview-panel,
  .ai-panel,
  .log-panel {
    grid-column: span 1;
  }

  .scenario-grid,
  .summary-grid,
  .target-grid,
  .mode-row,
  .speed-grid,
  .quick-grid {
    grid-template-columns: 1fr;
  }
}