/* ============================================================
   Trille Canvas v2 CSS — Miro-style board, mobile-first
   ============================================================ */

#view-canvas {
  position: relative;
  overflow: hidden;
  background: var(--canvas-bg, #f0eff4);
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

[data-dark] #view-canvas { --canvas-bg: #0a0a0c; }

#view-canvas::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, var(--canvas-dot, rgba(0,0,0,.12)) 1px, transparent 1px);
  background-size: 28px 28px;
  z-index: 0;
}

[data-dark] #view-canvas::before { --canvas-dot: rgba(255,255,255,.08); }

.canvas-vp {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: visible;
}

.canvas-world {
  position: absolute;
  top: 0; left: 0;
  transform-origin: 0 0;
  will-change: transform;
}

/* SVG lines */
.canvas-svg {
  position: absolute;
  top: 0; left: 0;
  overflow: visible;
  pointer-events: none;
  z-index: 0;
}
.canvas-line { fill: none; stroke: var(--line); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; opacity: .7; }
.canvas-line-arrow { fill: var(--line); opacity: .7; }
.canvas-line-del { pointer-events: all; }

/* Card nodes */
.cn {
  position: absolute;
  width: 200px;
  min-height: 110px;
  background: var(--surface);
  border-radius: 18px;
  box-shadow: 0 2px 12px rgba(0,0,0,.10), 0 0 0 .5px rgba(0,0,0,.07);
  padding: 14px 14px 12px;
  cursor: grab;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  transition: box-shadow .15s, transform .1s;
  box-sizing: border-box;
}
.cn:active { cursor: grabbing; box-shadow: 0 8px 28px rgba(0,0,0,.18); }
.cn.cn-dragging { box-shadow: 0 12px 36px rgba(0,0,0,.22), 0 0 0 2px var(--accent); transform: scale(1.03) rotate(.5deg); z-index: 200 !important; opacity: .94; }

.cn[data-color="yellow"]  { background: #fffbe6; }
.cn[data-color="pink"]    { background: #fff0f5; }
.cn[data-color="green"]   { background: #f0faf2; }
.cn[data-color="blue"]    { background: #edf4ff; }
.cn[data-color="purple"]  { background: #f5f0ff; }
.cn[data-color="orange"]  { background: #fff7ed; }
[data-dark] .cn[data-color="yellow"]  { background: #2a2510; }
[data-dark] .cn[data-color="pink"]    { background: #28101a; }
[data-dark] .cn[data-color="green"]   { background: #0f2015; }
[data-dark] .cn[data-color="blue"]    { background: #0f1c2e; }
[data-dark] .cn[data-color="purple"]  { background: #1a1028; }
[data-dark] .cn[data-color="orange"]  { background: #251a08; }

.cn-tag { font-size: 10px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--ink3); margin-bottom: 5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cn-title { font-size: 15px; font-weight: 700; line-height: 1.25; letter-spacing: -.2px; color: var(--ink); word-break: break-word; margin-bottom: 4px; }
.cn-desc { font-size: 12px; line-height: 1.4; color: var(--ink2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 6px; }
.cn-prog { display: flex; align-items: center; gap: 6px; margin-top: 8px; }
.cn-prog-bar { flex: 1; height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.cn-prog-fill { height: 100%; background: var(--accent); border-radius: 2px; }
.cn-prog-pct { font-size: 11px; color: var(--ink3); font-weight: 600; min-width: 28px; text-align: right; }
.cn-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; padding-top: 8px; border-top: .5px solid var(--line); }
.cn-cards-count, .cn-done-count { font-size: 11px; color: var(--ink3); font-weight: 500; }
.cn-board { border-left: 4px solid var(--accent); }

.cn-menu {
  position: absolute; top: 9px; right: 9px;
  width: 28px; height: 28px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink3); opacity: 0; transition: opacity .15s, background .12s; z-index: 2;
}
.cn:hover .cn-menu, .cn-menu:focus { opacity: 1; }
.cn-menu:hover { background: var(--hover); color: var(--ink); }
.cn-menu svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; }

/* Link target button */
.cn-link-target {
  margin-top: 8px; width: 100%; padding: 6px;
  border-radius: 8px; border: 1.5px dashed #4a90d9;
  background: rgba(74,144,217,.08); color: #4a90d9;
  font-size: 12px; font-weight: 600; cursor: pointer;
  transition: background .12s;
}
.cn-link-target:hover { background: rgba(74,144,217,.18); }

/* ---- Sticky notes ---- */
.cn-sticky {
  position: absolute;
  border-radius: 4px;
  box-shadow: 3px 3px 12px rgba(0,0,0,.12), 0 1px 4px rgba(0,0,0,.08);
  padding: 12px 12px 24px;
  cursor: grab;
  touch-action: none;
  min-width: 120px;
  min-height: 80px;
  box-sizing: border-box;
  z-index: 5;
}
.cn-sticky::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 28px;
  background: rgba(0,0,0,.06);
  border-radius: 4px 4px 0 0;
  pointer-events: none;
}
.cn-sticky-text {
  font-size: 14px; line-height: 1.5; color: #333;
  min-height: 40px; outline: none;
  word-break: break-word;
  -webkit-user-select: text; user-select: text;
}
.cn-sticky-text:focus { outline: none; }

/* ---- Text blocks ---- */
.cn-textblock {
  position: absolute;
  cursor: text;
  z-index: 6;
  padding: 4px;
  border-radius: 4px;
  border: 1.5px solid transparent;
  transition: border-color .12s;
  min-width: 60px;
}
.cn-textblock:hover { border-color: var(--line); }
.cn-textblock-inner {
  outline: none; color: var(--ink);
  word-break: break-word; min-width: 60px; min-height: 1em;
  -webkit-user-select: text; user-select: text;
}

/* ---- Shapes ---- */
.cn-shape {
  position: absolute;
  cursor: grab;
  touch-action: none;
  z-index: 4;
  display: flex; align-items: center; justify-content: center;
  box-sizing: border-box;
}
.cn-shape:hover { filter: brightness(.96); }

/* ---- Frames ---- */
.cn-frame {
  position: absolute;
  border: 2px dashed var(--ink3);
  border-radius: 12px;
  background: rgba(0,0,0,.02);
  z-index: 1;
  cursor: grab;
  touch-action: none;
  box-sizing: border-box;
}
[data-dark] .cn-frame { background: rgba(255,255,255,.02); }
.cn-frame-label {
  position: absolute;
  top: -20px; left: 8px;
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; color: var(--ink3);
}

/* ---- Uploads ---- */
.cn-upload {
  position: absolute;
  cursor: grab;
  touch-action: none;
  z-index: 5;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,.12);
  box-sizing: border-box;
}

/* ---- Delete button on objects ---- */
.cn-obj-del {
  position: absolute;
  top: 4px; right: 4px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(0,0,0,.2);
  color: white;
  font-size: 13px; line-height: 20px;
  text-align: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity .12s, background .12s;
  z-index: 10;
  display: flex; align-items: center; justify-content: center;
  pointer-events: all;
}
.cn-sticky:hover .cn-obj-del,
.cn-textblock:hover .cn-obj-del,
.cn-shape:hover .cn-obj-del,
.cn-frame:hover .cn-obj-del,
.cn-upload:hover .cn-obj-del { opacity: 1; }
.cn-obj-del:hover { background: rgba(220,50,50,.8); }

/* ---- Direct canvas header controls ---- */
#view-canvas.Trille-canvas-direct .canvas-back { display: none; }

.Trille-canvas-back-btn,
.Trille-canvas-cards-btn {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  z-index: 70;
  min-height: 38px;
  border-radius: 14px;
  background: var(--surface);
  border: .5px solid var(--line);
  box-shadow: 0 2px 10px rgba(0,0,0,.10);
  color: var(--ink2);
  font-size: 14px;
  font-weight: 600;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px 12px;
}
#view-canvas.Trille-canvas-direct .Trille-canvas-back-btn,
#view-canvas.Trille-canvas-direct .Trille-canvas-cards-btn { display: flex; }
.Trille-canvas-back-btn { left: 12px; }
.Trille-canvas-cards-btn { right: 12px; }
.Trille-canvas-back-btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ---- Miro-style Toolbar ---- */
.canvas-toolbar {
  position: absolute;
  left: 50%;
  bottom: max(88px, calc(env(safe-area-inset-bottom) + 78px));
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--surface);
  border-radius: 999px;
  padding: 5px 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,.14);
  border: .5px solid var(--line);
  white-space: nowrap;
  max-width: calc(100vw - 32px);
  overflow-x: auto;
}
.canvas-toolbar::-webkit-scrollbar { display: none; }
[data-dark] .canvas-toolbar { box-shadow: 0 6px 24px rgba(0,0,0,.5); }

.canvas-tb-btn {
  width: 36px; height: 36px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; color: var(--ink2);
  transition: background .12s, color .12s; flex-shrink: 0;
}
.canvas-tb-btn svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.canvas-tb-btn:hover, .canvas-tb-btn:active { background: var(--hover); color: var(--ink); }
.canvas-tb-btn.active { background: var(--ink); color: var(--bg); border-radius: 10px; }

.canvas-tool-btn { /* alias */ }

.canvas-tb-sep { width: 1px; height: 22px; background: var(--line); flex-shrink: 0; margin: 0 2px; }
.canvas-tb-zoom { font-size: 12px; font-weight: 600; color: var(--ink3); min-width: 36px; text-align: center; letter-spacing: .02em; flex-shrink: 0; }

/* zoom controls row */
.canvas-zoom-row {
  position: absolute;
  bottom: max(88px, calc(env(safe-area-inset-bottom) + 78px));
  right: 14px;
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.canvas-zoom-btn {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--surface); box-shadow: 0 2px 8px rgba(0,0,0,.1);
  border: .5px solid var(--line); display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: var(--ink2); cursor: pointer; transition: background .12s;
}
.canvas-zoom-btn:hover { background: var(--hover); color: var(--ink); }
.canvas-zoom-btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ---- Back button ---- */
.canvas-back {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  left: 12px;
  z-index: 50;
  display: flex; align-items: center; gap: 5px;
  background: var(--surface); border-radius: 12px;
  padding: 8px 12px; font-size: 14px; font-weight: 500; color: var(--ink2);
  box-shadow: 0 2px 10px rgba(0,0,0,.10); border: .5px solid var(--line); cursor: pointer;
}
.canvas-back svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.canvas-board-title {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  left: 50%; transform: translateX(-50%);
  z-index: 40; font-size: 14px; font-weight: 600; color: var(--ink2);
  pointer-events: none; white-space: nowrap;
  max-width: calc(100vw - 160px); overflow: hidden; text-overflow: ellipsis;
}

/* Link mode overlay hint */
.canvas-link-banner {
  position: absolute;
  top: max(52px, calc(env(safe-area-inset-top) + 44px));
  left: 50%; transform: translateX(-50%);
  z-index: 60;
  background: #4a90d9; color: white;
  border-radius: 999px; padding: 8px 16px;
  font-size: 13px; font-weight: 600;
  display: none; align-items: center; gap: 10px;
  box-shadow: 0 4px 16px rgba(74,144,217,.35);
  white-space: nowrap;
}
.canvas-link-banner.visible { display: flex; }
.canvas-link-cancel {
  background: rgba(255,255,255,.25); border-radius: 100px;
  padding: 2px 8px; font-size: 12px; cursor: pointer;
}
.canvas-link-cancel:hover { background: rgba(255,255,255,.4); }

/* Shape picker popup */
.canvas-shape-popup {
  position: fixed; z-index: 500;
  background: var(--surface); border: .5px solid var(--line);
  border-radius: 14px; box-shadow: 0 8px 24px rgba(0,0,0,.15);
  padding: 8px; display: none; gap: 6px; flex-direction: column;
  min-width: 140px;
}
.canvas-shape-popup.open { display: flex; }
.canvas-shape-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 9px;
  cursor: pointer; font-size: 15px; color: var(--ink2); transition: background .12s;
}
.canvas-shape-item:hover { background: var(--hover); color: var(--ink); }
.canvas-shape-icon { font-size: 18px; width: 24px; text-align: center; }

/* Canvas color swatches */
.canvas-color-popup {
  position: fixed; z-index: 410;
  background: var(--surface); border: .5px solid var(--line);
  border-radius: 14px; box-shadow: 0 8px 24px rgba(0,0,0,.15);
  padding: 10px; display: flex; gap: 7px; align-items: center; flex-wrap: wrap;
  max-width: 180px;
  opacity: 0; pointer-events: none; transform: scale(.9); transform-origin: bottom center;
  transition: all .15s cubic-bezier(.32,1,.23,1);
}
.canvas-color-popup.open { opacity: 1; pointer-events: all; transform: scale(1); }
.canvas-swatch {
  width: 18px; height: 18px; border-radius: 50%;
  border: 1.5px solid transparent; cursor: pointer;
  transition: transform .12s, border-color .12s; flex-shrink: 0;
}
.canvas-swatch:hover { transform: scale(1.2); border-color: var(--ink2); }

/* Canvas context menu */
.canvas-ctx {
  position: fixed; z-index: 400;
  background: var(--surface); border: .5px solid var(--line);
  border-radius: 16px; box-shadow: 0 8px 32px rgba(0,0,0,.15);
  padding: 6px; min-width: 180px;
  opacity: 0; pointer-events: none; transform: scale(.93);
  transform-origin: top right; transition: all .15s cubic-bezier(.32,1,.23,1);
}
.canvas-ctx.open { opacity: 1; pointer-events: all; transform: scale(1); }
.canvas-ctx-i {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 11px 13px; border-radius: 10px;
  font-size: 16px; font-weight: 400; color: var(--ink2); transition: background .12s;
}
.canvas-ctx-i svg { width: 17px; height: 17px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.canvas-ctx-i:hover { background: var(--hover); color: var(--ink); }
.canvas-ctx-div { height: .5px; background: var(--line); margin: 4px 0; }

/* Empty state */
.canvas-empty {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; pointer-events: none; z-index: 2;
}
.canvas-empty h3 { font-size: 20px; font-weight: 700; color: var(--ink2); }
.canvas-empty p { font-size: 14px; color: var(--ink3); }

/* Touch hint */
.canvas-hint {
  position: absolute;
  bottom: max(148px, calc(env(safe-area-inset-bottom) + 138px));
  left: 50%; transform: translateX(-50%);
  z-index: 40; font-size: 12px; color: var(--ink3); font-weight: 500;
  pointer-events: none; opacity: 1; transition: opacity .6s; white-space: nowrap;
}
.canvas-hint.hidden { opacity: 0; }