/* ============================================================
   Whiteboard — collaborative boards (Miro-style)
   Scoped under #whiteboard-view so it can't leak into the app.
   Uses the app's theme variables (--bg, --surface, --text, …).
   ============================================================ */

#whiteboard-view { flex: 1; min-height: 0; background: var(--bg); flex-direction: column; }
#whiteboard-view * { box-sizing: border-box; }

.wb-root {
  display: flex; flex-direction: column; flex: 1; min-height: 0;
  font-family: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
}

/* ── Board list ─────────────────────────────────── */
.wb-list { flex: 1; overflow-y: auto; padding: 28px 32px 80px; }
.wb-list-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.wb-list-head h2 { font-size: 22px; font-weight: 650; margin: 0; letter-spacing: -0.01em; }
.wb-list-sub { font-size: 13px; color: var(--text-3); margin-top: 3px; }

.wb-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }

.wb-card {
  border: 1px solid var(--border); border-radius: 14px; background: var(--surface);
  overflow: hidden; cursor: pointer; transition: border-color .15s, transform .12s, box-shadow .15s;
  display: flex; flex-direction: column;
}
.wb-card:hover { border-color: var(--border2); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.07); }
.wb-card-thumb {
  height: 122px; background: var(--surface2);
  background-image:
    radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 18px 18px; display: flex; align-items: center; justify-content: center;
  color: var(--text-4); font-size: 12px;
}
.wb-card-body { padding: 12px 14px; }
.wb-card-name { font-size: 14px; font-weight: 550; margin: 0 0 3px; }
.wb-card-meta { font-size: 11.5px; color: var(--text-3); }
.wb-card-del {
  position: absolute; top: 8px; right: 8px; width: 26px; height: 26px; border-radius: 7px;
  border: none; background: rgba(0,0,0,.45); color: #fff; cursor: pointer; display: none;
  align-items: center; justify-content: center;
}
.wb-card { position: relative; }
.wb-card:hover .wb-card-del { display: flex; }

.wb-new-card {
  border: 1.5px dashed var(--border2); border-radius: 14px; background: transparent;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  min-height: 168px; cursor: pointer; color: var(--text-2); font-size: 14px; font-weight: 500;
  transition: border-color .15s, color .15s, background .15s;
}
.wb-new-card:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.wb-new-card svg { width: 26px; height: 26px; }

.wb-empty { text-align: center; color: var(--text-3); padding: 60px 0; font-size: 14px; }

/* ── Editor ─────────────────────────────────────── */
.wb-editor { display: flex; flex-direction: column; flex: 1; min-height: 0; }

.wb-toolbar {
  display: flex; align-items: center; gap: 8px; padding: 9px 14px;
  border-bottom: 1px solid var(--border); background: var(--surface); flex-shrink: 0;
}
.wb-tb-name {
  font-size: 14px; font-weight: 600; border: 1px solid transparent; border-radius: 7px;
  padding: 4px 8px; background: transparent; color: var(--text); min-width: 120px; max-width: 320px;
}
.wb-tb-name:hover { border-color: var(--border); }
.wb-tb-name:focus { border-color: var(--accent); outline: none; background: var(--bg); }
.wb-tb-spacer { flex: 1; }
.wb-presence { font-size: 11.5px; color: var(--text-3); display: flex; align-items: center; gap: 6px; margin-right: 4px; }
.wb-presence .dot { width: 7px; height: 7px; border-radius: 50%; background: #22c55e; }
.wb-save-state { font-size: 11.5px; color: var(--text-3); min-width: 64px; }

.wb-btn {
  display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 11px;
  border: 1px solid var(--border); border-radius: 8px; background: var(--surface);
  color: var(--text); font-size: 13px; font-weight: 500; cursor: pointer; white-space: nowrap;
  font-family: inherit; transition: border-color .12s, background .12s;
}
.wb-btn:hover { border-color: var(--border2); background: var(--surface2); }
.wb-btn.is-active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.wb-btn svg { width: 16px; height: 16px; }
.wb-btn-icon { padding: 0; width: 32px; justify-content: center; }
.wb-btn-ghost { border-color: transparent; background: transparent; }
.wb-btn-ghost:hover { background: var(--surface2); }

.wb-zoom { display: flex; align-items: center; gap: 2px; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.wb-zoom button { width: 30px; height: 30px; border: none; background: var(--surface); color: var(--text); cursor: pointer; font-size: 16px; }
.wb-zoom button:hover { background: var(--surface2); }
.wb-zoom .lvl { min-width: 46px; text-align: center; font-size: 12px; color: var(--text-2); }

/* ── Canvas ─────────────────────────────────────── */
.wb-viewport {
  position: relative; flex: 1; min-height: 0; overflow: hidden;
  background-color: var(--bg);
  background-image: radial-gradient(var(--border) 1.1px, transparent 1.1px);
  background-size: 24px 24px; cursor: grab; touch-action: none; user-select: none;
}
.wb-viewport.is-panning { cursor: grabbing; }
.wb-viewport.tool-text { cursor: crosshair; }

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

.wb-el { position: absolute; top: 0; left: 0; }
.wb-el.is-selected .wb-el-frame { border-color: var(--accent); }
/* Selection chrome counter-scales by 1/zoom (--wb-inv, set in JS) so handles,
   outlines and toolbars stay a constant ON-SCREEN size at any zoom — Figma/Miro. */
.wb-el-frame {
  position: absolute; inset: 0; border-style: solid; border-color: transparent;
  border-width: calc(1.5px * var(--wb-inv, 1)); border-radius: 4px;
  pointer-events: none; box-sizing: border-box;
}
.wb-el img { width: 100%; height: 100%; display: block; pointer-events: none; -webkit-user-drag: none; border-radius: 3px; }

.wb-text {
  width: 100%; height: 100%; padding: 6px 8px; outline: none; overflow: hidden;
  font-family: 'Geist', sans-serif; line-height: 1.35; white-space: pre-wrap; word-break: break-word;
  background: transparent; border-radius: 4px;
}
.wb-text:focus { background: var(--accent-soft); }
.wb-text:empty:before { content: 'Type…'; color: var(--text-4); }

/* resize handles — size & offsets scale by 1/zoom so they're always ~11px on screen */
.wb-handle {
  position: absolute; width: calc(11px * var(--wb-inv, 1)); height: calc(11px * var(--wb-inv, 1));
  background: var(--surface); border-style: solid; border-color: var(--accent);
  border-width: calc(1.5px * var(--wb-inv, 1)); border-radius: 50%; display: none; z-index: 3;
}
.wb-el.is-selected .wb-handle { display: block; }
.wb-handle.nw { left: calc(-6px * var(--wb-inv, 1)); top: calc(-6px * var(--wb-inv, 1));    cursor: nwse-resize; }
.wb-handle.ne { right: calc(-6px * var(--wb-inv, 1)); top: calc(-6px * var(--wb-inv, 1));    cursor: nesw-resize; }
.wb-handle.sw { left: calc(-6px * var(--wb-inv, 1)); bottom: calc(-6px * var(--wb-inv, 1)); cursor: nesw-resize; }
.wb-handle.se { right: calc(-6px * var(--wb-inv, 1)); bottom: calc(-6px * var(--wb-inv, 1)); cursor: nwse-resize; }

.wb-el-del {
  position: absolute; top: calc(-34px * var(--wb-inv, 1)); right: 0; height: 26px; padding: 0 9px; display: none;
  align-items: center; gap: 5px; border: 1px solid var(--border); border-radius: 7px;
  background: var(--surface); color: #d44a3d; font-size: 12px; cursor: pointer; z-index: 4;
  transform: scale(var(--wb-inv, 1)); transform-origin: top right;
}
.wb-el.is-selected .wb-el-del { display: inline-flex; }

/* text formatting mini-bar — constant on-screen size */
.wb-textbar {
  position: absolute; top: calc(-42px * var(--wb-inv, 1)); left: 0; display: none; align-items: center; gap: 4px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 4px;
  z-index: 5; box-shadow: 0 4px 14px rgba(0,0,0,.1);
  transform: scale(var(--wb-inv, 1)); transform-origin: top left;
}
.wb-el.type-text.is-selected .wb-textbar { display: flex; }
.wb-textbar button { width: 26px; height: 26px; border: none; border-radius: 5px; background: transparent; color: var(--text); cursor: pointer; }
.wb-textbar button:hover { background: var(--surface2); }
.wb-textbar input[type=color] { width: 26px; height: 26px; border: none; background: none; padding: 0; cursor: pointer; }

.wb-hint {
  position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%);
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px;
  padding: 7px 15px; font-size: 12px; color: var(--text-3); box-shadow: 0 3px 12px rgba(0,0,0,.07);
  pointer-events: none; opacity: .92;
}

.wb-loading { display: flex; align-items: center; justify-content: center; flex: 1; color: var(--text-3); font-size: 14px; }