/* ===== Canvas Styles (FrostBloom theme) ===== */

/* Body override for canvas page */
.canvas-body {
    background: var(--bg-deep);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

/* ===== Toolbar ===== */
#canvas-toolbar {
    height: 48px;
    min-height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    gap: 8px;
    overflow-x: auto;
    overflow-y: hidden;
}

.canvas-toolbar-left {
    display: flex;
    align-items: center;
    gap: 3px;
    flex-shrink: 0;
}

.canvas-toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.canvas-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-right: 8px;
}

.canvas-logo {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid rgba(99,179,237,.3);
}

.canvas-brand-text {
    font-weight: 700;
    font-size: .85rem;
    background: linear-gradient(135deg, #fff, var(--frost-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.c-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all .15s ease;
    font-size: 16px;
    font-weight: 600;
    flex-shrink: 0;
}

.c-btn:hover {
    background: rgba(99,179,237,.08);
    color: var(--frost-2);
}

.c-btn.active {
    background: rgba(99,179,237,.15);
    color: var(--frost-2);
    border: 1px solid rgba(99,179,237,.3);
}

.c-btn.danger:hover {
    background: rgba(252,129,129,.1);
    color: var(--danger);
}

.sep {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 4px;
    flex-shrink: 0;
}

.c-color-wrap {
    display: flex;
    align-items: center;
}

.color-palette {
    display: flex;
    gap: 3px;
    flex-wrap: nowrap;
    align-items: center;
}

.color-swatch {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all .15s ease;
    flex-shrink: 0;
    outline: 1px solid rgba(255,255,255,.12);
    outline-offset: 0;
}

.color-swatch:hover {
    transform: scale(1.2);
    outline-color: rgba(255,255,255,.35);
}

.color-swatch.active {
    outline: 2px solid var(--frost-2);
    outline-offset: 2px;
    transform: scale(1.1);
}

.c-stroke-wrap {
    display: flex;
    align-items: center;
    gap: 4px;
}

.stroke-label {
    font-size: 11px;
    color: var(--text-dim);
    font-weight: 700;
}

.stroke-slider {
    width: 50px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.stroke-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--frost-1);
    cursor: pointer;
}

#c-zoom-label {
    font-size: 11px;
    color: var(--text-muted);
    min-width: 32px;
    text-align: center;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.c-back-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: .78rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: all .15s;
    border: 1px solid var(--border);
    white-space: nowrap;
}

.c-back-btn:hover {
    color: var(--frost-2);
    border-color: var(--border-glow);
}

/* ===== Main body row (canvas + sidebar) ===== */
#canvas-body {
    flex: 1;
    display: flex;
    flex-direction: row;
    min-height: 0; /* critical — prevents flex children from overflowing */
    overflow: hidden;
}

/* ===== Canvas Container ===== */
#canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    min-width: 0;
}

/* ===== Canvas Stage (zoom target) ===== */
#canvas-stage {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-origin: 0 0;
    /* pointer-events: none here so container catches drawing events */
    pointer-events: none;
}

/* ===== Map Layer ===== */
#map-layer {
    position: absolute;
    inset: 0;
    background-image: url('/static/jeswfcl6y34h1.jpeg');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    opacity: 0.55;
    filter: brightness(0.9) contrast(0.95);
    pointer-events: none;
    z-index: 0;
}

/* ===== Drawing Layer (SVG) ===== */
#drawing-layer {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    overflow: visible;
}

/* ===== Arrow styles - brighter, high contrast ===== */
.arrow-line {
    stroke-width: 2.5; /* Slightly thicker for better visibility */
    vector-effect: non-scaling-stroke; /* Maintains thickness at different zooms */
}

/* ===== Drawing elements (inside SVG) ===== */
.drawing-element {
    pointer-events: all;
    cursor: grab;
    transition: opacity 0.15s;
}

body.is-panning .drawing-element {
    cursor: grabbing !important;
}

.drawing-element:hover {
    filter: brightness(1.2);
}

.drawing-element.locked-self {
    cursor: grabbing;
    filter: brightness(1.25) drop-shadow(0 0 8px #fbbf24);
}

.drawing-element.locked-other {
    cursor: not-allowed;
    opacity: 0.6;
}

.drawing-element.selected {
    filter: drop-shadow(0 0 6px var(--frost-1));
}

/* ===== Session Link Panel (top-left HUD, outside stage) ===== */
#c-link-panel {
    position: absolute;
    top: 68px; /* Below toolbar (48px) + margin */
    left: 12px;
    z-index: 150; /* Above toolbar (100) and canvas elements */
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
    display: none;
    gap: 0;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0,0,0,.55);
    min-width: 300px;
    backdrop-filter: blur(8px);
}

#c-link-panel.visible { display: flex; }

.link-panel-title {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.link-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
}

.link-row:last-child { margin-bottom: 0; }

.link-label {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 4px;
    min-width: 40px;
    text-align: center;
    letter-spacing: .05em;
    text-transform: uppercase;
    flex-shrink: 0;
}

.editor-badge { background: rgba(99,179,237,.2); color: var(--frost-2); border: 1px solid rgba(99,179,237,.3); }
.viewer-badge { background: rgba(72,187,120,.15); color: #68d391; border: 1px solid rgba(72,187,120,.3); }

#c-link-panel input {
    flex: 1;
    background: var(--bg-mid, rgba(255,255,255,.04));
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 5px 8px;
    font-size: 11px;
    color: var(--text-muted);
    font-family: 'SF Mono', 'Fira Code', monospace;
    min-width: 0;
    outline: none;
}

.copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    border: 1px solid var(--border);
    border-radius: 5px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all .15s;
}

.copy-btn:hover { background: rgba(99,179,237,.1); color: var(--frost-2); border-color: rgba(99,179,237,.3); }
.copy-btn.copied { color: var(--success); border-color: var(--success); }

/* ===== Create Session Overlay ===== */
#c-create-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(5,8,16,.9);
    z-index: 50;
    backdrop-filter: blur(4px);
}

#c-create-overlay.hidden { display: none; }

/* ===== Status Bar ===== */
#c-status-bar {
    height: 28px;
    min-height: 28px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    padding: 0 12px;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    font-size: 11px;
    color: var(--text-muted);
    gap: 12px;
}

.c-status-left { display: flex; align-items: center; gap: 6px; }

.c-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

.c-dot.connected    { background: var(--success); box-shadow: 0 0 4px var(--success); }
.c-dot.disconnected { background: var(--danger); }
.c-dot.reconnecting { background: var(--warning); animation: c-pulse 1s infinite; }

@keyframes c-pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: .4; }
}

.c-status-spacer { flex: 1; }

/* ===== Presence Panel (right sidebar) ===== */
.pres-panel {
    width: 196px;
    flex-shrink: 0;
    border-left: 1px solid var(--border);
    background: var(--bg-card);
    padding: 12px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    gap: 0;
}

.pres-section {
    margin-bottom: 16px;
}

.pres-section-bottom {
    margin-top: auto;
    margin-bottom: 0;
}

.pres-section-title {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.pres-user-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-height: 20px;
}

.pres-user {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 6px;
    border-radius: 6px;
    transition: background .12s;
}

.pres-user:hover {
    background: rgba(99,179,237,.05);
}

.pres-av {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    flex-shrink: 0;
}

.pres-av.editor { background: rgba(99,179,237,.2); color: var(--frost-2); }
.pres-av.viewer { background: rgba(72,187,120,.15); color: #68d391; }

.pres-name {
    font-size: 12px;
    color: var(--text);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pres-role {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500;
    flex-shrink: 0;
}

.pres-role.editor { background: rgba(99,179,237,.15); color: var(--frost-2); }
.pres-role.viewer { background: rgba(72,187,120,.1);  color: #68d391; }

.pres-session-id {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 11px;
    color: var(--text-muted);
    word-break: break-all;
}

.pres-connected {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 3px;
}

.pres-ws-status {
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 2px;
}

/* ===== Viewer Mode ===== */
body.viewer .drawing-element {
    pointer-events: none !important;
    cursor: default !important;
}

body.viewer #btn-delete-element { opacity: .4; pointer-events: none; }
body.viewer #btn-undo           { opacity: .4; pointer-events: none; }
body.viewer #btn-tree-red       { opacity: .4; pointer-events: none; }
body.viewer #btn-tree-blue      { opacity: .4; pointer-events: none; }
body.viewer .c-color-wrap       { opacity: .4; pointer-events: none; }
body.viewer .c-stroke-wrap      { opacity: .4; pointer-events: none; }
body.viewer .drawing-layer      { pointer-events: none; }

/* ===== Remote Cursors ===== */
#remote-cursors {
    position: absolute;
    inset: 0;
    z-index: 10;
    pointer-events: none;
    overflow: hidden;
}

.remote-cursor {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,.7);
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 10;
    transition: opacity .15s;
    box-shadow: 0 0 6px rgba(0,0,0,.3);
}

.remote-cursor-label {
    position: absolute;
    left: 14px;
    top: -3px;
    font-size: 9px;
    font-weight: 700;
    white-space: nowrap;
    padding: 1px 5px;
    border-radius: 3px;
    color: #fff;
    letter-spacing: .03em;
    box-shadow: 0 1px 4px rgba(0,0,0,.3);
}

/* ===== Lock Denied Flash ===== */
@keyframes c-flash-denied {
    0%   { filter: drop-shadow(0 0 8px var(--danger)); }
    100% { filter: none; }
}

.drawing-element.flash-denied {
    animation: c-flash-denied .4s ease;
}