.properties-panel {
    position: fixed;
    top: 64px;
    right: 0;
    bottom: 0;
    width: var(--properties-width);
    background: #ffffff;
    border-left: 1px solid #e2e8f0;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 30;
}

.properties-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding-bottom: 8px;
    border-bottom: 1px solid #e2e8f0;
}

.properties-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: #0f172a;
}

.properties-subtitle {
    font-size: 11px;
    color: #64748b;
}

.properties-empty {
    background: #f8fafc;
    border-radius: 12px;
    padding: 12px;
    text-align: center;
}

.properties-fields {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.properties-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #64748b;
}

.properties-input,
.properties-textarea {
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 8px 10px;
    font-size: 12px;
    font-weight: 600;
    color: #0f172a;
}

.properties-textarea {
    resize: vertical;
    min-height: 120px;
}

.properties-actions {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.properties-links {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.properties-link-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 8px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    font-size: 11px;
    font-weight: 600;
}

.properties-link-item button {
    font-size: 10px;
    color: #ef4444;
    font-weight: 700;
}

.properties-btn {
    flex: 1;
    padding: 8px 10px;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    background: #ffffff;
    color: #0f172a;
}

.properties-btn:hover {
    border-color: #38bdf8;
    color: #0284c7;
}

.properties-danger {
    color: #ef4444;
    border-color: #fecaca;
}

.properties-danger:hover {
    border-color: #ef4444;
}

.properties-collapse {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    color: #64748b;
}

.properties-collapse:hover {
    background: #f1f5f9;
    color: #0f172a;
}

.properties-resizer {
    position: fixed;
    top: 64px;
    right: calc(var(--properties-width) - 3px);
    width: 6px;
    bottom: 0;
    cursor: ew-resize;
    z-index: 45;
}

.properties-resizer::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 2px;
    width: 2px;
    background: transparent;
    transition: background 0.2s ease;
}

.properties-resizer:hover::before {
    background: rgba(14, 165, 233, 0.4);
}

.properties-toggle {
    position: fixed;
    right: 8px;
    top: 72px;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: #0f172a;
    color: #ffffff;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 40;
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.2);
}

body.properties-collapsed .properties-panel {
    transform: translateX(100%);
}

body.properties-collapsed .properties-resizer {
    display: none;
}

body.properties-collapsed .properties-toggle {
    display: inline-flex;
}

@media (max-width: 1023px) {
    .properties-panel {
        display: none;
    }
    .properties-resizer,
    .properties-toggle {
        display: none;
    }
}