html, body { height: 100%; overflow: hidden; overscroll-behavior: none; }
body { user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; background: var(--canvas-bg); }

#stage { position: fixed; inset: 0; overflow: hidden; touch-action: none; }
#canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; outline: none; }
#cursors { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 5; }

.rcursor { position: absolute; left: 0; top: 0; will-change: transform; transition: opacity .3s ease; }
.rcursor svg { width: 20px; height: 20px; display: block; filter: drop-shadow(0 2px 3px rgba(0,0,0,.28)); }
.rcursor span {
    position: absolute; left: 14px; top: 17px; padding: 3px 9px; border-radius: 9999px;
    color: #fff; font-size: 12px; font-weight: 600; white-space: nowrap;
    box-shadow: 0 4px 10px -4px rgba(0,0,0,.35);
}
.rcursor.idle span { opacity: .55; }
.rcursor.gone { opacity: 0; }

#toast { top: calc(68px + env(safe-area-inset-top)); }
#editor {
    position: absolute; z-index: 6; display: none; margin: 0; padding: 0;
    border: 0; outline: none; resize: none; overflow: hidden; background: transparent;
    white-space: pre-wrap; overflow-wrap: break-word; word-break: break-word;
    transform-origin: 0 0; user-select: text; -webkit-user-select: text;
    caret-color: rgb(var(--accent-rgb));
}

/* Floating chrome */
.float { position: fixed; z-index: 20; display: flex; align-items: center; gap: 8px; }
.top-left {
    top: calc(12px + env(safe-area-inset-top)); left: 12px;
    padding: 6px 12px 6px 6px; border-radius: 9999px;
    background: var(--dock-bg); border: 1px solid var(--border-strong);
    box-shadow: var(--shadow-float); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    max-width: calc(100vw - 150px);
}
.tl-home .brand-mark { width: 32px; height: 32px; border-radius: 9999px; transition: transform .2s ease; }
.tl-home:hover .brand-mark { transform: rotate(-8deg) scale(1.05); }
.tl-divider { width: 1px; height: 18px; background: var(--border-strong); }
.title-input {
    min-width: 60px; width: 180px; max-width: 34vw; background: transparent; border: 0; outline: none;
    font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 700; font-size: 14.5px; letter-spacing: -.01em;
    padding: 6px 6px; border-radius: 8px; color: var(--text-main); text-overflow: ellipsis;
    user-select: text; -webkit-user-select: text;
}
.title-input:hover { background: var(--input-bg); }
.title-input:focus { background: var(--input-bg); box-shadow: 0 0 0 2px rgb(var(--accent-rgb) / .35); }
.title-input::placeholder { color: var(--text-dim); }
.status { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-dim); white-space: nowrap; }
.status i { width: 7px; height: 7px; border-radius: 9999px; background: rgb(var(--warm-rgb)); flex-shrink: 0; }
.status.ok i { background: rgb(var(--accent-rgb)); }
.status.off i { background: rgb(var(--coral-rgb)); }
.status.busy i { animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; } }
@media (max-width: 720px) { #status-text { display: none; } .title-input { width: 120px; } }

.top-right { top: calc(12px + env(safe-area-inset-top)); right: 12px; }
.people { display: flex; align-items: center; padding-right: 4px; }
.avatar {
    width: 34px; height: 34px; border-radius: 9999px; margin-left: -8px;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 12px; font-weight: 700; font-family: 'Plus Jakarta Sans', sans-serif;
    border: 2.5px solid var(--canvas-bg); position: relative; cursor: default;
    transition: transform .2s cubic-bezier(.2,.8,.2,1.3);
    animation: av-in .35s cubic-bezier(.2,.8,.2,1.3);
}
@keyframes av-in { from { transform: scale(.4); opacity: 0; } }
.avatar:hover { transform: translateY(-2px); z-index: 2; }
.avatar.me { cursor: pointer; }
.avatar.me::after { content: ''; position: absolute; right: -2px; bottom: -2px; width: 11px; height: 11px; border-radius: 9999px; background: var(--bg-surface); border: 2px solid var(--canvas-bg);
    background-image: radial-gradient(circle, rgb(var(--accent-rgb)) 45%, transparent 50%); }
.avatar.more { background: var(--bg-surface); color: var(--text-sub); border-color: var(--canvas-bg); box-shadow: inset 0 0 0 1px var(--border-strong); }
.avatar[data-name]:hover::before {
    content: attr(data-name); position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%);
    background: var(--bg-surface); color: var(--text-main); border: 1px solid var(--border-strong);
    padding: 5px 10px; border-radius: 9999px; font-size: 12px; font-weight: 600; white-space: nowrap;
    box-shadow: var(--shadow-float); pointer-events: none; font-family: 'Instrument Sans', sans-serif;
}
.share-btn { height: 40px; padding: 0 16px 0 14px; border-radius: 9999px; display: inline-flex; align-items: center; gap: 7px; font-weight: 600; font-size: 14px; box-shadow: var(--shadow-float); }
.share-btn .material-symbols-outlined { font-size: 18px; }
@media (max-width: 520px) { .share-label { display: none; } .share-btn { padding: 0 11px; } .people .avatar:not(.me):not(.more) { display: none; } }

.round-btn {
    width: 40px; height: 40px; border-radius: 9999px; display: inline-flex; align-items: center; justify-content: center;
    background: var(--dock-bg); border: 1px solid var(--border-strong); color: var(--dock-btn);
    box-shadow: var(--shadow-float); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    transition: background .15s ease, color .15s ease, transform .15s ease, opacity .2s;
}
.round-btn:hover { color: var(--text-main); background: var(--bg-surface); }
.round-btn:active { transform: scale(.92); }
.round-btn:disabled { opacity: .4; pointer-events: none; }

.menu-wrap { position: relative; }
.popover {
    position: fixed; z-index: 40; background: var(--bg-surface); border: 1px solid var(--border-strong);
    border-radius: 18px; box-shadow: var(--shadow-pop); padding: 6px;
    opacity: 0; pointer-events: none; transform: translateY(-6px) scale(.98); transform-origin: top right;
    transition: opacity .18s ease, transform .22s cubic-bezier(.2,.8,.2,1);
}
.popover.open { opacity: 1; pointer-events: auto; transform: none; }
.menu { position: absolute; top: calc(100% + 8px); right: 0; min-width: 220px; }
.menu button, .menu a {
    width: 100%; display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 12px;
    font-size: 13.5px; font-weight: 500; color: var(--text-main); text-align: left;
}
.menu button:hover, .menu a:hover { background: var(--dock-btn-hover); }
.menu .material-symbols-outlined { font-size: 19px; color: var(--text-sub); }
.menu .danger { color: rgb(var(--coral-rgb)); }
.menu .danger .material-symbols-outlined { color: rgb(var(--coral-rgb)); }
.menu-sep { height: 1px; background: var(--border-subtle); margin: 5px 6px; }

.me-pop { top: calc(62px + env(safe-area-inset-top)); right: 12px; width: 260px; padding: 14px; }
.pop-title { font-size: 11.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--text-dim); margin: 0 2px 10px; }
.field {
    width: 100%; background: var(--input-bg); border: 1px solid var(--border-subtle); color: var(--text-main);
    border-radius: 12px; padding: 10px 12px; font-size: 14px; font-weight: 500; outline: none;
    user-select: text; -webkit-user-select: text;
}
.field:focus { border-color: rgb(var(--accent-rgb) / .6); box-shadow: 0 0 0 3px rgb(var(--accent-rgb) / .15); }
.me-colors { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; margin-top: 12px; }
.me-colors button { aspect-ratio: 1; border-radius: 9999px; transition: transform .15s ease; }
.me-colors button:hover { transform: scale(1.1); }
.me-colors button.on { box-shadow: 0 0 0 2px var(--bg-surface), 0 0 0 4px var(--text-main); }

/* Dock */
.dock-wrap {
    position: fixed; left: 50%; transform: translateX(-50%); z-index: 20;
    bottom: calc(14px + env(safe-area-inset-bottom)); max-width: calc(100vw - 16px);
}
.dock {
    display: flex; align-items: center; gap: 4px; padding: 6px; border-radius: 9999px;
    background: var(--dock-bg); border: 1px solid var(--border-strong);
    box-shadow: var(--shadow-float); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    overflow-x: auto; scrollbar-width: none;
}
.dock::-webkit-scrollbar { display: none; }
.tool {
    position: relative; width: 42px; height: 42px; min-width: 42px; border-radius: 9999px;
    display: flex; align-items: center; justify-content: center; color: var(--dock-btn);
    transition: background .15s ease, color .15s ease, transform .15s ease;
    -webkit-tap-highlight-color: transparent;
}
.tool:hover { background: var(--dock-btn-hover); color: var(--text-main); }
.tool:active { transform: scale(.9); }
.tool.active { color: rgb(var(--accent-rgb)); background: rgb(var(--accent-rgb) / .15); }
.tool .material-symbols-outlined { font-size: 21px; }
.tool.active .material-symbols-outlined { font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 20; }
.dock-sep { width: 1px; height: 20px; background: var(--border-strong); margin: 0 3px; flex-shrink: 0; }
@media (max-width: 560px) {
    .tool { width: 36px; height: 40px; min-width: 36px; }
    .tool .material-symbols-outlined { font-size: 20px; }
    .dock { gap: 0; padding: 4px; }
    .dock-sep { display: none; }
}
@media (max-width: 560px) and (hover: none) {
    .tool[data-tool="hand"] { display: none; }
}

/* Properties */
.props {
    position: fixed; left: 50%; z-index: 21;
    bottom: calc(76px + env(safe-area-inset-bottom));
    transform: translate(-50%, 8px); opacity: 0; pointer-events: none;
    display: flex; align-items: center; gap: 4px; flex-wrap: wrap; justify-content: center;
    padding: 6px 8px; border-radius: 20px; width: max-content; max-width: calc(100vw - 16px);
    background: var(--dock-bg); border: 1px solid var(--border-strong);
    box-shadow: var(--shadow-float); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    transition: opacity .18s ease, transform .22s cubic-bezier(.2,.8,.2,1);
}
.props.open { opacity: 1; pointer-events: auto; transform: translate(-50%, 0); }
.pgroup { display: flex; align-items: center; gap: 3px; }
.psep { width: 1px; height: 20px; background: var(--border-strong); margin: 0 5px; }
.swatch { width: 26px; height: 26px; border-radius: 9999px; display: flex; align-items: center; justify-content: center; transition: transform .15s ease; }
.swatch i { width: 18px; height: 18px; border-radius: 9999px; box-shadow: inset 0 0 0 1px rgba(0,0,0,.12); }
.swatch:hover { transform: scale(1.12); }
.swatch.on { box-shadow: 0 0 0 2px rgb(var(--accent-rgb)); }
.swatch.sq i { border-radius: 5px; }
.pbtn {
    height: 30px; min-width: 30px; padding: 0 7px; border-radius: 10px;
    display: inline-flex; align-items: center; justify-content: center; gap: 4px;
    color: var(--text-sub); font-size: 12px; font-weight: 600;
}
.pbtn:hover { background: var(--dock-btn-hover); color: var(--text-main); }
.pbtn.on { background: rgb(var(--accent-rgb) / .15); color: rgb(var(--accent-rgb)); }
.pbtn .material-symbols-outlined { font-size: 19px; }
.pbtn.danger:hover { background: rgb(var(--coral-rgb) / .14); color: rgb(var(--coral-rgb)); }
.dot-size { border-radius: 9999px; background: currentColor; display: block; }

.bottom-left { left: 12px; bottom: calc(14px + env(safe-area-inset-bottom)); gap: 6px; }
.bottom-right {
    right: 12px; bottom: calc(14px + env(safe-area-inset-bottom)); gap: 2px; padding: 3px; border-radius: 9999px;
    background: var(--dock-bg); border: 1px solid var(--border-strong); box-shadow: var(--shadow-float);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.bottom-right .round-btn { width: 34px; height: 34px; box-shadow: none; border: 0; background: transparent; }
.bottom-right .round-btn:hover { background: var(--dock-btn-hover); }
.zoom-label { min-width: 52px; height: 34px; border-radius: 9999px; font-size: 12.5px; font-weight: 600; color: var(--text-sub); font-variant-numeric: tabular-nums; }
.zoom-label:hover { color: var(--text-main); background: var(--dock-btn-hover); }
@media (max-width: 760px) {
    .bottom-left, .bottom-right { bottom: calc(72px + env(safe-area-inset-bottom)); }
    .props { bottom: calc(124px + env(safe-area-inset-bottom)); }
    .bottom-right .round-btn { display: none; }
}

.empty-hint {
    position: fixed; left: 50%; top: 46%; transform: translate(-50%, -50%); z-index: 2;
    text-align: center; pointer-events: none; opacity: 0; transition: opacity .4s ease; width: min(90vw, 420px);
}
.empty-hint.show { opacity: 1; }
.eh-title { font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 700; font-size: 22px; letter-spacing: -.02em; color: var(--text-sub); margin-bottom: 8px; }
.eh-sub { font-size: 14px; line-height: 1.6; color: var(--text-dim); }
.eh-sub b { color: var(--text-sub); }

/* Loading veil */
#veil { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; background: var(--canvas-bg); transition: opacity .45s ease; }
#veil.hide { opacity: 0; pointer-events: none; }
.veil-card { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.veil-mark { width: 52px; height: 52px; border-radius: 16px; animation: bob 1.4s ease-in-out infinite; }
.veil-mark .material-symbols-outlined { font-size: 28px; }
@keyframes bob { 50% { transform: translateY(-6px) rotate(-6deg); } }
.veil-text { font-size: 14px; color: var(--text-sub); font-weight: 500; }

/* Modals */
.modal { position: fixed; inset: 0; z-index: 60; display: flex; align-items: center; justify-content: center; padding: 16px;
    background: rgba(10, 12, 14, .42); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
    opacity: 0; pointer-events: none; transition: opacity .2s ease; }
.modal.open { opacity: 1; pointer-events: auto; }
.modal-card {
    position: relative; width: 100%; max-width: 440px; padding: 28px; border-radius: 26px;
    background: var(--bg-surface); border: 1px solid var(--border-strong); box-shadow: var(--shadow-pop);
    transform: translateY(10px) scale(.98); transition: transform .25s cubic-bezier(.2,.8,.2,1);
}
.modal.open .modal-card { transform: none; }
.modal-card.wide { max-width: 560px; }
.modal-card h2 { font-family: 'Plus Jakarta Sans', sans-serif; font-size: 21px; letter-spacing: -.02em; margin: 0 0 8px; }
.modal-card p { margin: 0 0 20px; color: var(--text-sub); font-size: 14.5px; line-height: 1.6; }
.modal-x { position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; box-shadow: none; }
.feature-icon { width: 44px; height: 44px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.tone-accent { background: rgb(var(--accent-rgb) / .14); color: rgb(var(--accent-rgb)); }
.link-row { display: flex; gap: 6px; padding: 5px; border-radius: 16px; background: var(--input-bg); border: 1px solid var(--border-subtle); }
.link-row input { flex: 1; min-width: 0; background: transparent; border: 0; outline: 0; padding: 0 8px; font-size: 14px; font-weight: 500; color: var(--text-main); user-select: all; -webkit-user-select: all; }
.link-row button { height: 40px; padding: 0 16px; border-radius: 12px; display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; }
.link-row button .material-symbols-outlined { font-size: 17px; }
.share-more { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.share-more > * { flex: 1; height: 40px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; gap: 7px; font-size: 13.5px; font-weight: 600; white-space: nowrap; padding: 0 12px; }
.share-more .material-symbols-outlined { font-size: 18px; }
.keys-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; margin-top: 18px; font-size: 13.5px; color: var(--text-sub); }
.keys-grid div { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
kbd { display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; padding: 0 6px; margin-right: 4px; border-radius: 7px;
    background: var(--input-bg); border: 1px solid var(--border-strong); border-bottom-width: 2px; font-family: inherit; font-size: 11.5px; font-weight: 600; color: var(--text-main); }

.drop-zone { position: fixed; inset: 10px; z-index: 70; border-radius: 28px; border: 2px dashed rgb(var(--accent-rgb) / .7);
    background: rgb(var(--accent-rgb) / .08); display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none; transition: opacity .15s ease; }
.drop-zone.show { opacity: 1; }
.drop-zone div { display: flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 9999px; background: var(--bg-surface); box-shadow: var(--shadow-pop); font-weight: 600; }
.drop-zone .material-symbols-outlined { color: rgb(var(--accent-rgb)); }

/* Cursor styles per tool */
#stage.t-hand #canvas { cursor: grab; }
#stage.panning #canvas { cursor: grabbing !important; }
#stage.t-pen #canvas, #stage.t-marker #canvas, #stage.t-shape #canvas, #stage.t-arrow #canvas { cursor: crosshair; }
#stage.t-text #canvas { cursor: text; }
#stage.t-sticky #canvas, #stage.t-image #canvas { cursor: copy; }
#stage.t-eraser #canvas { cursor: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='24' height='24'><circle cx='12' cy='12' r='8' fill='rgba(255,255,255,0.6)' stroke='%23555' stroke-width='1.5'/></svg>") 12 12, cell; }

/* Text formatting toolbar */
.textbar {
    position: fixed; left: 0; top: 0; z-index: 22;
    display: flex; align-items: center; gap: 2px; flex-wrap: wrap;
    padding: 5px; border-radius: 14px; max-width: calc(100vw - 16px);
    background: var(--bg-surface); border: 1px solid var(--border-strong); box-shadow: var(--shadow-float);
    opacity: 0; pointer-events: none; transition: opacity .15s ease;
}
.textbar.open { opacity: 1; pointer-events: auto; }
.tb-btn {
    height: 32px; min-width: 32px; padding: 0 6px; border-radius: 9px;
    display: inline-flex; align-items: center; justify-content: center; gap: 2px;
    color: var(--text-sub); font-size: 13px; font-weight: 600;
    transition: background .12s ease, color .12s ease;
}
.tb-btn:hover { background: var(--dock-btn-hover); color: var(--text-main); }
.tb-btn.on { background: rgb(var(--accent-rgb) / .15); color: rgb(var(--accent-rgb)); }
.tb-btn .material-symbols-outlined { font-size: 19px; }
.tb-font { padding: 0 6px 0 10px; min-width: 112px; justify-content: space-between; color: var(--text-main); font-size: 14px; }
.tb-font .material-symbols-outlined { font-size: 17px; color: var(--text-dim); }
.tb-size { min-width: 40px; height: 32px; border-radius: 9px; font-size: 12.5px; font-weight: 600; color: var(--text-main); font-variant-numeric: tabular-nums; }
.tb-size:hover { background: var(--dock-btn-hover); }
.tb-sep { width: 1px; height: 20px; background: var(--border-strong); margin: 0 4px; }
.tb-wrap { position: relative; }
.tb-color { position: relative; display: inline-flex; flex-direction: column; align-items: center; }
.tb-color .material-symbols-outlined { font-size: 18px; margin-top: -3px; }
.tb-color i { width: 16px; height: 3.5px; border-radius: 2px; margin-top: -2px; box-shadow: 0 0 0 1px var(--border-subtle); }
.tb-menu {
    position: absolute; top: calc(100% + 8px); left: 0; z-index: 2; min-width: 170px; padding: 5px;
    background: var(--bg-surface); border: 1px solid var(--border-strong); border-radius: 14px; box-shadow: var(--shadow-pop);
    display: none;
}
.tb-menu.open { display: block; }
.tb-menu button { display: block; width: 100%; text-align: left; padding: 8px 12px; border-radius: 9px; font-size: 17px; color: var(--text-main); }
.tb-menu button:hover { background: var(--dock-btn-hover); }
.tb-menu button.on { background: rgb(var(--accent-rgb) / .14); color: rgb(var(--accent-rgb)); }
.tb-colors.open { display: grid; grid-template-columns: repeat(5, 28px); gap: 6px; min-width: 0; padding: 8px; right: 0; left: auto; }
.tb-menu .tb-swatch { width: 28px; height: 28px; padding: 0; border-radius: 9999px; box-shadow: inset 0 0 0 1px rgba(0,0,0,.15); display: flex; align-items: center; justify-content: center; }
.tb-menu .tb-swatch.auto { background: var(--input-bg); color: var(--text-sub); }
.tb-menu .tb-swatch.auto .material-symbols-outlined { font-size: 16px; }
.tb-menu .tb-swatch.on { box-shadow: 0 0 0 2px var(--bg-surface), 0 0 0 4px rgb(var(--accent-rgb)); }
@media (max-width: 560px) {
    .tb-font { min-width: 96px; }
    .tb-btn { min-width: 30px; height: 30px; padding: 0 4px; }
    .tb-sep { margin: 0 2px; }
}