.shape-handle {
    position: absolute;
    width: 12px;
    height: 12px;
    border: 2px solid #2563eb;
    border-radius: 9999px;
    background: #ffffff;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.18);
    transform: translate(-50%, -50%);
    pointer-events: auto;
    cursor: pointer;
}

.shape-handle.shape-handle-edge {
    border-radius: 4px;
}

.shape-rotate-handle {
    width: 14px;
    height: 14px;
    border-radius: 9999px;
    background: #eff6ff;
    border-color: #1d4ed8;
}

.shape-selection-label {
    position: absolute;
    left: 50%;
    top: -30px;
    transform: translateX(-50%);
    background: rgba(37, 99, 235, 0.95);
    color: #ffffff;
    font-size: 12px;
    line-height: 1;
    padding: 6px 8px;
    border-radius: 9999px;
    white-space: nowrap;
    pointer-events: none;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.25);
}

.quadrilateral-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    width: 100%;
}

.quadrilateral-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 14px;
    background: #ffffff;
    color: #111827;
    font-size: 12px;
    font-weight: 600;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.quadrilateral-option:hover {
    transform: translateY(-1px);
    border-color: #93c5fd;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.1);
}

.quadrilateral-option.active {
    border-color: #2563eb;
    background: #eff6ff;
    color: #1d4ed8;
}

.quadrilateral-option svg {
    width: 28px;
    height: 28px;
}

.shape-property-row {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
}

.shape-property-row input[type="range"] {
    flex: 1 1 auto;
}

.shape-property-value {
    min-width: 48px;
    text-align: right;
    font-size: 12px;
    font-weight: 600;
    color: #4b5563;
}

.tool-btn.assigned-pen::after,
.tool-btn.assigned-touch::before {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    border: 1px solid #ffffff;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.35);
    pointer-events: none;
}

.tool-btn.assigned-pen::after {
    right: 4px;
    bottom: 4px;
    background: #ef4444;
}

.tool-btn.assigned-touch::before {
    left: 4px;
    bottom: 4px;
    background: #2563eb;
}

.selection-context-menu {
    position: fixed;
    z-index: 5000;
    display: none;
    gap: 6px;
    padding: 6px;
    border: 1px solid rgba(148, 163, 184, 0.28);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 18px 35px rgba(15, 23, 42, 0.2);
}

.selection-context-menu.active {
    display: flex;
}

.selection-context-menu button {
    padding: 6px 10px;
    border: 0;
    border-radius: 999px;
    background: #eef2ff;
    color: #1e3a8a;
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
}

.shape-type-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    width: 100%;
}

.shape-type-option {
    border: 1px solid #d1d5db;
    border-radius: 8px;
    background: #ffffff;
    color: #334155;
    cursor: pointer;
    font-size: 12px;
    padding: 8px 6px;
}

.shape-type-option.active {
    background: #dbeafe;
    border-color: #2563eb;
    color: #1d4ed8;
}

body.dark-mode .selection-context-menu,
body.dark-mode .shape-type-option {
    background: rgba(15, 23, 42, 0.94);
    color: #e2e8f0;
    border-color: rgba(148, 163, 184, 0.28);
}

body.dark-mode .selection-context-menu button,
body.dark-mode .shape-type-option.active {
    background: rgba(37, 99, 235, 0.28);
    color: #bfdbfe;
    border-color: rgba(96, 165, 250, 0.55);
}
.tool-btn { position: relative; }