/* 3omar.hs Smart Whiteboard — site-shell tokens (dark + light). */
.wb-restore { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 16px; margin: 6px 0 16px; border-color: color-mix(in srgb, var(--brand) 50%, transparent); }
.wb-restore[hidden] { display: none; }

.wb-app { display: grid; grid-template-columns: 250px minmax(0, 1fr); padding: 0; overflow: hidden; min-height: 560px; }
.wb-toolbar { display: flex; flex-direction: column; gap: 16px; padding: 16px; border-inline-end: 1px solid var(--glass-border); background: var(--glass-bg-subtle); overflow-y: auto; max-height: min(82vh, 900px); }
.wb-group__title { font-size: .78rem; font-weight: 800; color: var(--glass-text-muted); margin-bottom: 8px; letter-spacing: .04em; }
html[lang="en"] .wb-group__title { text-transform: uppercase; }
.wb-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.wb-btn { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; min-height: 58px; padding: 8px 6px; border-radius: 10px; border: 1px solid var(--glass-border); background: var(--control-bg); color: var(--glass-text-main); font: inherit; font-size: .78rem; font-weight: 600; cursor: pointer; text-align: center; line-height: 1.25; }
.wb-btn:hover { background: var(--glass-bg-hover); }
.wb-btn.is-active { border-color: var(--accent-strong); background: color-mix(in srgb, var(--brand) 16%, transparent); }
.wb-btn__icon { font-size: 1.15rem; line-height: 1; }
.wb-btn--primary { background: var(--btn-gradient-primary); color: #fff; border-color: transparent; }
.wb-btn--primary:hover { background: var(--btn-gradient-hover); }
.wb-btn--danger { color: #b91c1c; border-color: rgba(239,68,68,.4); background: rgba(239,68,68,.08); }
html:not(.light-mode) .wb-btn--danger { color: #fca5a5; }
.wb-props { display: grid; gap: 10px; }
.wb-prop { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 8px; font-size: .85rem; }
.wb-prop input[type="color"] { width: 46px; height: 34px; padding: 0; border: 1px solid var(--control-border); border-radius: 8px; background: none; cursor: pointer; }
.wb-prop--range { grid-template-columns: 1fr; }
.wb-prop--range input { width: 100%; accent-color: var(--accent-strong); }
.wb-save { margin: 10px 0 0; font-size: .78rem; color: var(--glass-text-muted); min-height: 1.2em; }

.wb-stage { position: relative; min-width: 0; overflow: auto; max-height: min(82vh, 900px); padding: 16px; display: flex; align-items: flex-start;
  background-color: #e5e7eb; background-image: radial-gradient(rgba(15,23,42,.18) 1px, transparent 1px); background-size: 18px 18px; }
html:not(.light-mode) .wb-stage { background-color: #1f2937; background-image: radial-gradient(rgba(255,255,255,.08) 1px, transparent 1px); }
.wb-paper { box-shadow: 0 10px 30px rgba(0,0,0,.35); border-radius: 4px; background: #fff; flex: 0 0 auto; margin-inline: auto; } /* auto margins: centred when smaller, scrollable (no negative overflow) when wider */
[dir="rtl"] .wb-stage { direction: ltr; } /* keep the canvas coordinate system left-to-right */

@media (max-width: 900px) {
  .wb-app { grid-template-columns: 1fr; min-height: 0; }
  .wb-toolbar { flex-direction: row; flex-wrap: nowrap; overflow-x: auto; overscroll-behavior-x: contain; gap: 14px; padding: 10px; border-inline-end: 0; border-bottom: 1px solid var(--glass-border); max-height: none; }
  .wb-group { flex: 0 0 auto; }
  .wb-group__title { display: none; }
  .wb-grid { display: flex; gap: 6px; }
  .wb-btn { min-width: 66px; min-height: 54px; font-size: .72rem; }
  .wb-props { display: flex; align-items: center; gap: 12px; height: 100%; }
  .wb-prop { grid-template-columns: auto auto; font-size: .78rem; }
  .wb-prop--range { grid-template-columns: 1fr; width: 150px; }
  .wb-save { display: none; }
  .wb-stage { padding: 8px; max-height: none; }
}