/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
/* Ensure the HTML `hidden` attribute always wins over display rules in this sheet */
[hidden] { display: none !important; }

:root {
  --bg: #f0f2f5;
  --toolbar-bg: #ffffff;
  --border: #e0e0e0;
  --accent: #c8102e;
  --accent-light: #e63946;
  --text: #2d3436;
  --text-muted: #636e72;
  --shadow: 0 2px 12px rgba(0,0,0,.1);
  --radius: 10px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  height: 100dvh;
  overflow: hidden;
  color: var(--text);
}

#app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
}

/* ── Main area (left-bar + canvas) ── */
#main-area {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* ── Left sidebar ── */
#left-bar {
  width: 160px;
  flex-shrink: 0;
  background: var(--toolbar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 12px 10px;
  gap: 0;
  overflow-y: auto;
  z-index: 10;
}
#left-bar::-webkit-scrollbar { width: 4px; }
#left-bar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.lb-section {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 10px 0;
}

.lb-label {
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
}
.lb-label em { font-style: normal; color: var(--accent); }

.lb-divider {
  height: 1px;
  background: var(--border);
  margin: 0 -10px;
  flex-shrink: 0;
}
.lb-divider-sm {
  margin: 3px 0;
  background: transparent;
  height: 4px;
}

/* Swatches grid in sidebar */
#left-bar .swatches {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
}
#left-bar .swatch {
  width: 100%;
  aspect-ratio: 1;
  height: auto;
}
#left-bar .color-custom {
  width: 100%;
  aspect-ratio: 1;
  height: auto;
}

/* Size slider full width */
#left-bar input[type="range"] {
  width: 100%;
}

/* Brush buttons as 3-column grid in sidebar */
#left-bar .brush-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
}
#left-bar .brush-btn {
  flex-direction: column;
  min-width: 0;
  width: 100%;
  aspect-ratio: 1;
  padding: 0;
  gap: 0;
  justify-content: center;
  align-items: center;
  border-radius: 7px;
}
#left-bar .brush-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
#left-bar .lb-divider-sm {
  grid-column: 1 / -1;
}

/* ── Toolbar ── */
#toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: var(--toolbar-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  flex-shrink: 0;
  z-index: 10;
}

.tool-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  letter-spacing: -.3px;
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tool-label {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  white-space: nowrap;
}
.tool-label em { font-style: normal; color: var(--accent); }

/* ── Color swatches ── */
.swatches {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}

.swatch {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  border: 2px solid transparent;
}
.swatch:hover { transform: scale(1.2); }
.swatch.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--accent);
  transform: scale(1.15);
}

.color-custom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: conic-gradient(red, yellow, lime, cyan, blue, magenta, red);
  cursor: pointer;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--border);
  transition: box-shadow .15s;
}
.color-custom:hover { box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--accent); }
.color-custom input[type="color"] {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}
.color-custom span {
  font-size: 1rem;
  color: #fff;
  pointer-events: none;
  text-shadow: 0 1px 2px rgba(0,0,0,.4);
}

/* ── Brush buttons ── */
.brush-buttons { display: flex; gap: 5px; flex-wrap: wrap; }

.brush-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 5px 8px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font-size: .65rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .15s;
  min-width: 52px;
}
.brush-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  stroke: currentColor;
  stroke-width: 1;
}
.brush-btn:hover {
  border-color: var(--accent-light);
  color: var(--accent);
  background: #fff0f1;
}
.brush-btn.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}
.brush-btn.active svg { fill: #fff; stroke: #fff; }

/* Size slider */
input[type="range"] {
  -webkit-appearance: none;
  width: 110px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(to right, var(--accent) 0%, var(--border) 0%);
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 1px 4px rgba(0,0,0,.25);
}

/* ── Action buttons ── */
.tool-actions { margin-left: auto; gap: 10px; }

.action-btn {
  padding: 8px 18px;
  border: none;
  border-radius: 8px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}

.icon-btn {
  padding: 7px 10px;
  background: #f0f0f0;
  color: var(--text-muted);
}
.icon-btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  display: block;
}
.icon-btn:hover:not(:disabled) { background: #e0e0e0; color: var(--text); }
.icon-btn:disabled { opacity: .35; cursor: not-allowed; }

#clearBtn {
  background: #f0f0f0;
  color: var(--text-muted);
}
#clearBtn:hover { background: #e0e0e0; color: var(--text); }

.magic-btn {
  background: linear-gradient(135deg, #c8102e, #e63946);
  color: #fff;
  box-shadow: 0 2px 8px rgba(200,16,46,.4);
  display: flex;
  align-items: center;
  gap: 6px;
}
.magic-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(200,16,46,.5);
}
.magic-btn:active { transform: none; }
.magic-btn:disabled {
  opacity: .6;
  cursor: not-allowed;
  transform: none;
}
.magic-icon { font-size: 1rem; }

/* ── Recognize button ── */
.recognize-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fff0f1;
  color: #c8102e;
  border: 1.5px solid #f5c0c5;
  font-weight: 600;
}
.recognize-btn svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}
.recognize-btn:hover:not(:disabled) {
  background: #ffe0e2;
  border-color: #c8102e;
}
.recognize-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ── Co-Create panel (inside canvas-wrap, so toolbar stays accessible) ── */
.rp-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: 340px;
  height: 100%;
  background: #fff;
  border-left: 1px solid var(--border);
  box-shadow: -6px 0 28px rgba(0,0,0,.10);
  z-index: 30;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
}
.rp-panel.open { transform: translateX(0); }

.rp-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.rp-title {
  font-size: .88rem;
  font-weight: 700;
  color: var(--text);
  flex: 1;
}
.rp-timestamp {
  font-size: .72rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.rp-close {
  background: none;
  border: none;
  font-size: 1rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 5px;
  line-height: 1;
}
.rp-close:hover { background: #f0f0f0; color: var(--text); }

.rp-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

/* Empty state */
.rp-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 48px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: .88rem;
  line-height: 1.5;
}
.rp-empty svg { width: 56px; height: 56px; opacity: .5; }

/* Loading */
.rp-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 48px 16px;
  color: var(--text-muted);
  font-size: .88rem;
}
.rp-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Error */
.rp-error {
  background: #fff0f0;
  border: 1px solid #fca5a5;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: .83rem;
  color: #b91c1c;
  line-height: 1.5;
}

/* Thumbnail */
.rp-thumbnail {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 16px;
  display: block;
}

/* Scene */
.rp-section { margin-bottom: 16px; }
.rp-section-label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.rp-scene-text {
  font-size: .88rem;
  line-height: 1.55;
  color: var(--text);
}

/* Tags */
.rp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}
.rp-tag {
  padding: 3px 10px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
}
.rp-tag-mood { background: #fef3c7; color: #92400e; }
.rp-tag-style { background: #ede9fe; color: #5b21b6; }

/* Object cards */
.rp-objects { display: flex; flex-direction: column; gap: 8px; }
.rp-object-card {
  background: #f8f9fa;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}
.rp-object-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
}
.rp-object-name {
  font-size: .83rem;
  font-weight: 700;
  color: var(--text);
  text-transform: capitalize;
}
.rp-object-pos {
  font-size: .68rem;
  background: #ffe0e2;
  color: #c1121f;
  padding: 2px 7px;
  border-radius: 10px;
  white-space: nowrap;
  flex-shrink: 0;
}
.rp-object-desc {
  font-size: .80rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0;
}

/* ── Activity log ── */
#rpActivity {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 8px;
}
.rp-activity-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.rp-activity-clear {
  background: none;
  border: none;
  font-size: .72rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
}
.rp-activity-clear:hover { background: #f0f0f0; color: var(--text); }

.rp-activity-entry {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
}
.rp-activity-entry:last-child { border-bottom: none; }
.rp-activity-time {
  font-size: .70rem;
  color: var(--text-muted);
  white-space: nowrap;
  padding-top: 2px;
  min-width: 36px;
}
.rp-activity-info { display: flex; flex-direction: column; gap: 3px; }
.rp-activity-drew {
  font-size: .82rem;
  font-weight: 600;
  color: var(--accent);
}
.rp-activity-reason {
  font-size: .76rem;
  color: var(--text-muted);
  line-height: 1.4;
  font-style: italic;
}
.rp-activity-detect {
  font-size: .82rem;
  font-weight: 600;
  color: #3d5af1;
}
.rp-activity-scene {
  font-size: .76rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.rp-activity-objects {
  font-size: .72rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* ── Sidebar computer draw section ── */
.rp-computer-section {
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  margin-bottom: 14px;
}

.rp-controls-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.rp-controls-row:last-child { margin-bottom: 0; }

.settings-wrap {
  position: relative;
  margin-left: auto;
}

/* Detection button */
.detect-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #f0f4ff;
  color: #3d5af1;
  border: 1.5px solid #c7d2fe;
  font-weight: 600;
  flex: 1;
}
.detect-btn svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}
.detect-btn:hover:not(:disabled) { background: #e0e7ff; border-color: #6c5ce7; }
.detect-btn:disabled { opacity: .5; cursor: not-allowed; }

/* Detect & Draw button */
.detect-draw-btn {
  background: linear-gradient(135deg, #c8102e, #e63946);
  color: #fff;
  flex: 1;
}
.detect-draw-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(200,16,46,.5);
}
.detect-draw-btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }

/* Chevron toggle next to Ask Chalky */
.chalky-toggle { padding: 7px 8px; }
.chalky-toggle svg {
  width: 14px; height: 14px; display: block;
  transition: transform .2s ease;
}
.chalky-toggle.open svg { transform: rotate(180deg); }

/* Sub-buttons dropdown beneath Ask Chalky */
.rp-sub-row {
  display: flex;
  gap: 8px;
  padding-left: 10px;
  border-left: 2px solid var(--border);
}
.rp-sub-row .action-btn {
  font-size: .78rem;
  padding: 6px 12px;
  flex: 1;
}

.settings-gear {
  padding: 7px 8px;
}
.settings-gear svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
  stroke: none;
  display: block;
}
.settings-gear.open {
  border-color: var(--accent);
  background: #fff0f1;
  color: var(--accent);
}

.settings-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 240px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 6px 24px rgba(0,0,0,.12);
  padding: 14px 16px 16px;
  z-index: 50;
}

.sp-title {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.sp-row {
  display: grid;
  grid-template-columns: 62px 1fr 28px;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.sp-row:last-child { margin-bottom: 0; }

.sp-label {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.sp-row input[type="range"] {
  width: 100%;
}

.sp-row em {
  font-style: normal;
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent);
  text-align: right;
}

.sp-row-check {
  grid-template-columns: 62px auto 28px;
  align-items: center;
}
.sp-row-check input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
  justify-self: start;
}

/* ── Modals ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 8px 40px rgba(0,0,0,.22);
  padding: 24px 28px 22px;
  width: 360px;
  max-width: calc(100vw - 32px);
}

.modal-wide {
  width: 640px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 16px;
}

.modal-header {
  display: flex;
  align-items: center;
  margin-bottom: 14px;
}

.modal-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  flex: 1;
}

.modal-wide .modal-title { margin-bottom: 0; }

.modal-msg {
  font-size: .86rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.5;
}

.modal-input {
  width: 100%;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: .88rem;
  color: var(--text);
  outline: none;
  margin-bottom: 16px;
  font-family: inherit;
}
.modal-input:focus { border-color: var(--accent); }

.modal-btns { display: flex; gap: 8px; }

.modal-save-btn { background: var(--accent); color: #fff; flex: 1; }
.modal-save-btn:hover { background: #c1121f; }

.modal-nosave-btn { background: #f0f0f0; color: var(--text-muted); flex: 1; }
.modal-nosave-btn:hover { background: #e0e0e0; color: var(--text); }

.modal-cancel-btn {
  background: none;
  color: var(--text-muted);
  border: 1.5px solid var(--border);
}
.modal-cancel-btn:hover { background: #f0f0f0; color: var(--text); }

/* Projects grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  overflow-y: auto;
  padding: 4px 2px 4px;
  flex: 1;
}

.project-card {
  position: relative;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s;
}
.project-card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 12px rgba(200,16,46,.2);
}

.project-thumb {
  aspect-ratio: 4/3;
  background: #f8f9fa;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.project-thumb img { width: 100%; height: 100%; object-fit: cover; }
.project-thumb-empty { font-size: 2rem; opacity: .3; }

.project-info { padding: 8px 10px; }
.project-name {
  font-size: .80rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.project-date { font-size: .68rem; color: var(--text-muted); margin-top: 2px; }

.project-delete {
  position: absolute;
  top: 5px; right: 5px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: rgba(255,255,255,.85);
  border: none;
  font-size: .65rem;
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: opacity .15s;
}
.project-card:hover .project-delete { opacity: 1; }
.project-delete:hover { background: #ffd0d0; color: #c00; }

.projects-loading, .projects-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: .88rem;
}

/* ── Canvas ── */
#canvas-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#canvas-inner {
  position: absolute;
  inset: 0;
  transform-origin: center center;
  transition: transform .15s ease, right .3s cubic-bezier(.4,0,.2,1);
  background: white;
}

#canvas-wrap.panel-open #canvas-inner {
  right: 340px;
}

.zoom-label {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 38px;
  text-align: center;
  user-select: none;
}

.zoom-btn {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1;
  min-width: 28px;
  padding: 0 4px;
}

#c {
  display: block;
  position: absolute;
  inset: 0;
  cursor: crosshair;
  touch-action: none;
  z-index: 3;   /* above AI canvas so user drawings appear on top */
}

/* Computer drawing layer — sits below user canvas */
#computerCanvas {
  display: block;
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

/* Selection overlay canvas — topmost canvas layer */
#selCanvas {
  display: block;
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 4;
}

/* ── Pen cursor ── */
#penCursor {
  position: absolute;
  width: 28px;
  height: 28px;
  pointer-events: none;
  transform: translate(-4px, -24px);   /* align ink-dot tip (4px from left, 24px from top of 28px icon) */
  display: none;
  z-index: 20;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.35));
  transition: left .02s linear, top .02s linear;
}
#penCursor.active { display: block; }

/* ── Toast ── */
#toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(30,30,30,.88);
  color: #fff;
  padding: 9px 20px;
  border-radius: 20px;
  font-size: .85rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  backdrop-filter: blur(8px);
  transition: opacity .3s, transform .3s;
  z-index: 100;
  white-space: nowrap;
}
#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* User drawing entry in splash activity */
.rp-activity-entry--user .rp-activity-drew { color: var(--text-muted); font-weight: normal; }