/* ==========================================================================
   Design tokens
   ========================================================================== */
:root {
  --pc-bg: #1F2329;
  --pc-bg-elevated: #2C323B;
  --pc-amber: #D97706;
  --pc-amber-light: #FCD34D;
  --pc-amber-mid: #F59E0B;
  --pc-selected: #2563EB; /* selected element in 3D: blue stands out against wood */

  /* Semantic aliases */
  --color-bg: var(--pc-bg);
  --color-bg-elevated: var(--pc-bg-elevated);
  --color-accent: var(--pc-amber);
  --color-accent-light: var(--pc-amber-light);
  --color-text: #e6edf0;
  --color-text-muted: #9caeb8;
  --color-border: var(--pc-bg-elevated);
  --color-input-bg: rgba(255, 255, 255, 0.08);
  --color-input-border: var(--pc-bg-elevated);
  --color-danger: #dc3545;
  --color-danger-hover: #c82333;
}

/* ==========================================================================
   Base & layout
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  height: 100vh;
  overflow: hidden;
}

.container {
  display: flex;
  height: 100vh;
}

.canvas-container {
  flex: 0 0 70%;
  position: relative;
  background: var(--color-bg);
  border-right: 2px solid var(--color-border);
}

#canvas3d {
  width: 100%;
  height: 100%;
  display: block;
}

.configurator {
  flex: 0 0 30%;
  background: var(--color-bg);
  padding: 20px;
  overflow-y: auto;
  box-shadow: -2px 0 10px rgba(0, 0, 0, 0.2);
}

.configurator h2 {
  color: var(--color-text);
  margin-bottom: 20px;
  text-align: center;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 10px;
}

.control-group {
  margin-bottom: 25px;
  padding: 15px;
  background: var(--color-bg-elevated);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.control-group h3 {
  color: var(--color-text);
  margin-bottom: 15px;
  font-size: 16px;
}

.control-group-sub {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.control-group-sub h4 {
  color: var(--color-text-muted);
  margin-bottom: 8px;
  font-size: 14px;
}

.control-row {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  gap: 10px;
}
.control-row-value {
  justify-content: space-between;
}
.control-row > .value-display,
.control-row-value .value-display {
  margin-left: auto;
}

.control-row label {
  min-width: 120px;
  font-weight: 500;
  color: var(--color-text-muted);
}

.control-row input,
.control-row select {
  flex: 1;
  padding: 8px;
  border: 1px solid var(--color-input-border);
  border-radius: 4px;
  font-size: 14px;
  background: var(--color-input-bg);
  color: var(--color-text);
}

.control-row input[type="range"] {
  flex: 1;
}

.control-row input[type="checkbox"] {
  width: 20px;
  height: 20px;
  flex: 0;
}
.control-row .control-row-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.value-display {
  min-width: 50px;
  text-align: right;
  background: var(--color-bg-elevated);
  padding: 4px 8px;
  border-radius: 4px;
  font-weight: bold;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.control-row .value-and-unit,
.control-row-value .value-and-unit {
  margin-left: auto;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.control-row-value .value-and-unit .value-display,
.control-row .value-and-unit .value-display {
  margin-left: 0;
}
.value-unit {
  font-weight: normal;
  color: var(--color-text-muted);
  font-size: 13px;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-text {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 5px;
  font-style: italic;
}

.reset-btn {
  width: 100%;
  padding: 12px;
  background: var(--color-danger);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  margin-top: 20px;
  transition: background 0.3s;
}

.reset-btn:hover {
  background: var(--color-danger-hover);
}

.reset-btn.btn-accent {
  background: var(--color-accent);
}
.reset-btn.btn-accent:hover {
  background: var(--pc-amber-mid);
}
.reset-btn.btn-success {
  background: var(--pc-amber-light);
  color: var(--color-bg);
}
.reset-btn.btn-success:hover {
  filter: brightness(1.1);
}

.info-box {
  text-align: center;
  margin-bottom: 15px;
  padding: 8px;
  background: var(--color-bg-elevated);
  border-radius: 4px;
  color: var(--color-accent-light);
  border: 1px solid var(--color-border);
}

.loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-text);
  font-size: 18px;
}

.tooltip {
  position: absolute;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12px;
  pointer-events: none;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s;
}

/* Viewer toolbar (top over canvas: left, center, right) */
.viewer-toolbar {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  pointer-events: none;
}
.viewer-toolbar > * {
  pointer-events: auto;
}
.viewer-toolbar-left,
.viewer-toolbar-center,
.viewer-toolbar-right {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.viewer-toolbar-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.viewer-toolbar-right {
  margin-left: auto;
}

.viewer-toolbar .ghost-btn {
  padding: 8px 14px;
  background: rgba(31, 35, 41, 0.6);
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.viewer-toolbar .ghost-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

.viewer-toolbar .ghost-btn:active {
  background: rgba(217, 119, 6, 0.25);
  border-color: var(--color-accent);
  color: var(--color-accent-light);
}

.viewer-toolbar .ghost-btn.ghost-btn-active {
  background: rgba(217, 119, 6, 0.2);
  border-color: var(--color-accent);
  color: var(--color-accent-light);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.modal-dialog {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}
.modal-title {
  margin: 0;
  font-size: 18px;
  color: var(--color-text);
}
.modal-close-x {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}
.modal-close-x:hover {
  color: var(--color-text);
}
.modal-body {
  padding: 16px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}
.modal-actions {
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
}
.modal-close-btn {
  padding: 8px 16px;
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
}
.modal-close-btn:hover {
  filter: brightness(1.1);
}

.modal-trigger-btn {
  padding: 8px 14px;
  background: var(--color-input-bg);
  color: var(--color-text);
  border: 1px solid var(--color-input-border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}
.modal-trigger-btn:hover {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

/* ==========================================================================
   Touch & phones
   ========================================================================== */
#canvas3d {
  touch-action: none; /* dragging rotates the pallet instead of scrolling */
}

@media (max-width: 768px) {
  body {
    height: auto;
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .container {
    flex-direction: column;
    height: auto;
  }

  /* 3D view on top and stays in view while scrolling through the controls */
  .canvas-container {
    flex: none;
    position: sticky;
    top: 0;
    z-index: 10;
    height: 50vh;
    height: 50svh;
    border-right: none;
    border-bottom: 2px solid var(--color-border);
  }

  .configurator {
    flex: none;
    width: 100%;
    overflow: visible;
    padding: 16px 16px calc(24px + env(safe-area-inset-bottom, 0px));
    box-shadow: none;
  }

  /* Toolbar: one row that scrolls sideways instead of covering the view */
  .viewer-toolbar {
    top: 8px;
    left: 0;
    right: 0;
    padding: 0 8px;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .viewer-toolbar::-webkit-scrollbar {
    display: none;
  }
  .viewer-toolbar-left,
  .viewer-toolbar-center,
  .viewer-toolbar-right {
    flex-wrap: nowrap;
    flex: none;
    gap: 6px;
  }
  .viewer-toolbar-center {
    position: static;
    transform: none;
  }
  .viewer-toolbar-right {
    margin-left: 0;
  }
  .viewer-toolbar .ghost-btn {
    min-height: 36px;
    padding: 6px 10px;
    white-space: nowrap;
  }

  .control-group {
    padding: 12px;
    margin-bottom: 16px;
  }

  .control-row {
    flex-wrap: wrap;
    gap: 6px 10px;
  }
  .control-row label {
    min-width: 0;
    flex: 1 1 100%;
  }

  /* 16px keeps iOS from zooming in on focus; taller controls are easier to tap */
  .control-row input,
  .control-row select,
  .modal-trigger-btn {
    font-size: 16px;
    min-height: 40px;
  }
  .control-row input[type="range"] {
    min-height: 32px;
  }
  .control-row input[type="checkbox"] {
    width: 24px;
    height: 24px;
    min-height: 0;
  }
  .control-row:has(.control-row-right) label {
    flex: 1 1 auto;
  }

  .modal-dialog {
    max-width: calc(100vw - 24px);
    max-height: 85svh;
  }
}

input[type="range"],
input[type="checkbox"] {
  accent-color: var(--color-accent);
}