:root {
  --bg: #f4efe4;
  --panel: rgba(255, 251, 244, 0.92);
  --panel-strong: #fffdfa;
  --panel-deep: rgba(255, 247, 234, 0.98);
  --border: #d8c7ad;
  --text: #1f2a2e;
  --muted: #6d7272;
  --accent: #0f7b6c;
  --accent-strong: #0b5f54;
  --danger: #b84c4c;
  --danger-soft: #f6dfdf;
  --success: #1d8d57;
  --success-soft: #daf1e4;
  --shadow: 0 18px 44px rgba(109, 83, 40, 0.14);
  --grid: rgba(125, 109, 79, 0.14);
  --wire: #6f6a5c;
  --wire-powered: #f0a128;
  --glow: rgba(240, 161, 40, 0.28);
  --terminal: #8d7a58;
}

body[data-theme="dark"] {
  --bg: #171b20;
  --panel: rgba(31, 36, 42, 0.9);
  --panel-strong: #232931;
  --panel-deep: rgba(35, 41, 49, 0.98);
  --border: #39424d;
  --text: #edf2f4;
  --muted: #9ba7b0;
  --accent: #52c8b4;
  --accent-strong: #72e4d1;
  --danger: #ef7a7a;
  --danger-soft: rgba(116, 47, 47, 0.28);
  --success: #7de1a7;
  --success-soft: rgba(35, 92, 60, 0.32);
  --shadow: 0 22px 52px rgba(0, 0, 0, 0.28);
  --grid: rgba(155, 167, 176, 0.12);
  --wire: #c5ced6;
  --wire-powered: #ffbf5a;
  --glow: rgba(255, 191, 90, 0.22);
  --terminal: #d7c08f;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", "Aptos", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.14), transparent 28%),
    linear-gradient(180deg, var(--bg) 0%, color-mix(in srgb, var(--bg), #000 4%) 100%);
}

button {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px 1fr;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
  gap: 16px;
  padding: 16px;
}

.topbar,
.sidebar,
.workspace-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.topbar {
  grid-column: 1 / -1;
  display: flex;
  position: sticky;
  top: 12px;
  z-index: 30;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  gap: 16px;
}

.topbar-left,
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand h1,
.sidebar h2,
.sidebar h3 {
  margin: 0;
}

.brand p,
.sidebar-hint,
.selection-info {
  margin: 0;
  color: var(--muted);
}

.sidebar {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.catalog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.catalog-button,
.toolbar-button {
  border: 1px solid var(--border);
  background: var(--panel-strong);
  color: var(--text);
  border-radius: 16px;
  padding: 10px 12px;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}

.toolbar-readout {
  min-width: 68px;
  text-align: center;
  cursor: default;
}

.catalog-button {
  min-height: 82px;
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel-strong), white 10%), var(--panel-deep));
}

.catalog-button strong {
  font-size: 0.95rem;
}

.catalog-button span {
  color: var(--muted);
  font-size: 0.8rem;
}

.catalog-button:hover,
.toolbar-button:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent), var(--border) 30%);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

.toolbar-readout:hover {
  transform: none;
  box-shadow: none;
}

.toolbar-button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.toolbar-button.danger {
  background: var(--danger-soft);
  color: var(--danger);
}

.toolbar-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.status-pill {
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 700;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-strong), white 15%);
}

.status-pill.success {
  background: var(--success-soft);
  color: var(--success);
  border-color: color-mix(in srgb, var(--success), var(--border) 60%);
}

.status-pill.error {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger), var(--border) 60%);
}

.workspace-panel {
  position: relative;
  overflow: hidden;
}

.test-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent), transparent 84%), transparent);
}

.test-banner strong,
.test-banner span {
  display: block;
}

.test-banner span {
  color: var(--muted);
  font-size: 0.92rem;
}

.test-banner-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--wire-powered);
  box-shadow: 0 0 16px var(--glow);
  flex: 0 0 auto;
}

.workspace {
  position: relative;
  min-height: calc(100vh - 132px);
  overflow: auto;
  touch-action: none;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(180deg, color-mix(in srgb, var(--panel-strong), transparent 12%) 0%, color-mix(in srgb, var(--panel-deep), transparent 16%) 100%);
  background-size: 24px 24px, 24px 24px, auto;
}

.workspace-canvas {
  position: relative;
  width: 2200px;
  height: 1600px;
  transform-origin: top left;
}

.info-popover {
  position: absolute;
  max-width: 280px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
  z-index: 20;
}

.workspace-intro {
  position: absolute;
  top: 28px;
  left: 28px;
  right: auto;
  bottom: auto;
  display: block;
  max-width: min(520px, calc(100% - 56px));
  font-size: clamp(1.15rem, 1.6vw, 1.65rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--text), transparent 18%);
  pointer-events: none;
  z-index: 2;
  line-height: 1.15;
}

.info-popover strong,
.info-popover span {
  display: block;
}

.info-popover span {
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.4;
  font-size: 0.92rem;
}

.workspace::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(255, 255, 255, 0.08), transparent 22%),
    radial-gradient(circle at 90% 20%, rgba(255, 255, 255, 0.05), transparent 18%);
  pointer-events: none;
}

.workspace svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.workspace svg[data-role="wires"] {
  z-index: 1;
}

.workspace svg[data-role="anchors"] {
  z-index: 15;
  pointer-events: none;
}

.component {
  position: absolute;
  z-index: 8;
  width: 160px;
  min-height: 118px;
  touch-action: none;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel-strong), white 8%), var(--panel-deep));
  box-shadow: 0 12px 26px rgba(60, 48, 27, 0.12);
  padding: 12px 12px 10px;
  user-select: none;
  cursor: grab;
}

.component.type-phase,
.catalog-button.type-phase {
  background: linear-gradient(180deg, #fff5e5, #f7e2be);
}

.component.type-neutral,
.catalog-button.type-neutral {
  background: linear-gradient(180deg, #edf4ff, #d8e8ff);
}

.component.type-ground,
.catalog-button.type-ground {
  background: linear-gradient(180deg, #f1f8ec, #d9edd0);
}

.component.type-battery,
.catalog-button.type-battery {
  background: linear-gradient(180deg, #fff3ea, #ffd8bf);
}

.component.type-switch,
.catalog-button.type-switch,
.component.type-breaker,
.catalog-button.type-breaker,
.component.type-fuse,
.catalog-button.type-fuse,
.component.type-pushbutton,
.catalog-button.type-pushbutton,
.component.type-pushbutton-nc,
.catalog-button.type-pushbutton-nc,
.component.type-selector,
.catalog-button.type-selector,
.component.type-two-way-switch,
.catalog-button.type-two-way-switch,
.component.type-cross-switch,
.catalog-button.type-cross-switch,
.component.type-emergency-stop,
.catalog-button.type-emergency-stop,
.component.type-thermal-relay,
.catalog-button.type-thermal-relay,
.component.type-motor-protection,
.catalog-button.type-motor-protection,
.component.type-relay-contact,
.catalog-button.type-relay-contact {
  background: linear-gradient(180deg, #eef3ff, #dfe8ff);
}

.component.type-relay,
.catalog-button.type-relay,
.component.type-contactor,
.catalog-button.type-contactor,
.component.type-timer,
.catalog-button.type-timer {
  background: linear-gradient(180deg, #f8eefb, #ead9f5);
}

.component.type-junction,
.catalog-button.type-junction {
  background: linear-gradient(180deg, #f6f1ea, #e7ddd0);
}

.component.type-outlet,
.catalog-button.type-outlet,
.component.type-lamp,
.catalog-button.type-lamp,
.component.type-indicator-lamp,
.catalog-button.type-indicator-lamp,
.component.type-buzzer,
.catalog-button.type-buzzer,
.component.type-dc-motor,
.catalog-button.type-dc-motor,
.component.type-solenoid,
.catalog-button.type-solenoid {
  background: linear-gradient(180deg, #eef9f1, #d7eddc);
}

body[data-theme="dark"] .component.type-phase,
body[data-theme="dark"] .catalog-button.type-phase {
  background: linear-gradient(180deg, #4c3922, #352618);
}

body[data-theme="dark"] .component.type-neutral,
body[data-theme="dark"] .catalog-button.type-neutral {
  background: linear-gradient(180deg, #25374e, #1a2636);
}

body[data-theme="dark"] .component.type-ground,
body[data-theme="dark"] .catalog-button.type-ground {
  background: linear-gradient(180deg, #28402b, #1b2b1e);
}

body[data-theme="dark"] .component.type-battery,
body[data-theme="dark"] .catalog-button.type-battery {
  background: linear-gradient(180deg, #4d3126, #341f18);
}

body[data-theme="dark"] .component.type-switch,
body[data-theme="dark"] .catalog-button.type-switch,
body[data-theme="dark"] .component.type-breaker,
body[data-theme="dark"] .catalog-button.type-breaker,
body[data-theme="dark"] .component.type-fuse,
body[data-theme="dark"] .catalog-button.type-fuse,
body[data-theme="dark"] .component.type-pushbutton,
body[data-theme="dark"] .catalog-button.type-pushbutton,
body[data-theme="dark"] .component.type-pushbutton-nc,
body[data-theme="dark"] .catalog-button.type-pushbutton-nc,
body[data-theme="dark"] .component.type-selector,
body[data-theme="dark"] .catalog-button.type-selector,
body[data-theme="dark"] .component.type-two-way-switch,
body[data-theme="dark"] .catalog-button.type-two-way-switch,
body[data-theme="dark"] .component.type-cross-switch,
body[data-theme="dark"] .catalog-button.type-cross-switch,
body[data-theme="dark"] .component.type-emergency-stop,
body[data-theme="dark"] .catalog-button.type-emergency-stop,
body[data-theme="dark"] .component.type-thermal-relay,
body[data-theme="dark"] .catalog-button.type-thermal-relay,
body[data-theme="dark"] .component.type-motor-protection,
body[data-theme="dark"] .catalog-button.type-motor-protection,
body[data-theme="dark"] .component.type-relay-contact,
body[data-theme="dark"] .catalog-button.type-relay-contact {
  background: linear-gradient(180deg, #26324a, #1a2233);
}

body[data-theme="dark"] .component.type-relay,
body[data-theme="dark"] .catalog-button.type-relay,
body[data-theme="dark"] .component.type-contactor,
body[data-theme="dark"] .catalog-button.type-contactor,
body[data-theme="dark"] .component.type-timer,
body[data-theme="dark"] .catalog-button.type-timer {
  background: linear-gradient(180deg, #3d2b49, #291d31);
}

body[data-theme="dark"] .component.type-junction,
body[data-theme="dark"] .catalog-button.type-junction {
  background: linear-gradient(180deg, #40362c, #2b241e);
}

body[data-theme="dark"] .component.type-outlet,
body[data-theme="dark"] .catalog-button.type-outlet,
body[data-theme="dark"] .component.type-lamp,
body[data-theme="dark"] .catalog-button.type-lamp,
body[data-theme="dark"] .component.type-indicator-lamp,
body[data-theme="dark"] .catalog-button.type-indicator-lamp,
body[data-theme="dark"] .component.type-buzzer,
body[data-theme="dark"] .catalog-button.type-buzzer,
body[data-theme="dark"] .component.type-dc-motor,
body[data-theme="dark"] .catalog-button.type-dc-motor,
body[data-theme="dark"] .component.type-solenoid,
body[data-theme="dark"] .catalog-button.type-solenoid {
  background: linear-gradient(180deg, #24382c, #17241c);
}

.component.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent), transparent 80%), 0 12px 26px rgba(60, 48, 27, 0.12);
}

.component.powered {
  border-color: color-mix(in srgb, var(--wire-powered), var(--accent) 30%);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--wire-powered), transparent 80%), 0 0 30px var(--glow), 0 12px 26px rgba(60, 48, 27, 0.14);
}

.component-header {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: flex-start;
}

.component-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.component-title {
  font-size: 0.95rem;
  font-weight: 700;
}

.component-subtitle {
  font-size: 0.75rem;
  color: var(--muted);
}

.state-tag {
  font-size: 0.72rem;
  padding: 4px 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel-strong), var(--border) 20%);
  color: var(--muted);
}

.rotation-tag {
  font-size: 0.72rem;
  padding: 4px 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
  color: var(--muted);
}

.component-symbol {
  margin-top: 10px;
  height: 62px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.component-symbol svg {
  position: static;
  width: 100%;
  height: 100%;
}

.symbol-line,
.symbol-node,
.symbol-helper,
.symbol-text {
  stroke: var(--text);
}

.symbol-line,
.symbol-helper {
  fill: none;
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.symbol-helper {
  opacity: 0.45;
  stroke-dasharray: 4 4;
}

.symbol-node {
  fill: var(--text);
  stroke-width: 1.5;
}

.symbol-fill-none {
  fill: none;
}

.symbol-text {
  fill: var(--text);
  stroke: none;
  font-size: 14px;
  font-weight: 700;
}

.symbol-text.small {
  font-size: 11px;
}

.symbol-text.tiny {
  font-size: 8px;
  letter-spacing: 0.4px;
}

.component.powered .symbol-line,
.component.powered .symbol-node,
.component.powered .symbol-text {
  stroke: var(--wire-powered);
  fill: var(--wire-powered);
  filter: drop-shadow(0 0 6px var(--glow));
}

.component.powered .symbol-fill-none {
  fill: none;
}

.wire,
.wire-hitbox,
.wire-anchor {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.wire-hitbox {
  pointer-events: stroke;
  stroke: transparent;
  stroke-width: 18;
  cursor: pointer;
}

.wire {
  stroke: var(--wire);
  stroke-width: 4;
}

.wire.selected {
  stroke: var(--accent);
  stroke-width: 5;
}

.wire.preview {
  stroke: color-mix(in srgb, var(--accent), white 15%);
  stroke-width: 4;
  stroke-dasharray: 8 7;
}

.wire.powered {
  stroke: var(--wire-powered);
  filter: drop-shadow(0 0 6px var(--glow));
}

.wire-anchor {
  stroke: var(--accent);
  stroke-width: 3;
  stroke-dasharray: 4 4;
  pointer-events: none;
}

.svg-terminal {
  cursor: pointer;
  pointer-events: all;
}

.svg-terminal-circle {
  fill: var(--panel-strong);
  stroke: var(--terminal);
  stroke-width: 3;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.18));
}

.svg-terminal-label {
  font-size: 8px;
  font-weight: 700;
  fill: var(--text);
  pointer-events: none;
}

.svg-terminal:hover .svg-terminal-circle,
.svg-terminal.selected .svg-terminal-circle {
  stroke: var(--accent);
  transform: scale(1.08);
  transform-box: fill-box;
  transform-origin: center;
}

.svg-terminal.powered .svg-terminal-circle {
  stroke: var(--wire-powered);
  filter: drop-shadow(0 0 6px var(--glow));
}

.selection-rect {
  position: absolute;
  border: 1px dashed var(--accent);
  background: color-mix(in srgb, var(--accent), transparent 86%);
  pointer-events: none;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (max-width: 1040px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .workspace {
    min-height: 68vh;
  }
}