.sm-tool {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.sm-presets {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    padding: 32px;
    overflow-y: auto;
}

.sm-presets-header {
    margin-bottom: 28px;
}

.sm-presets-header h2 {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.4px;
    color: var(--text-primary);
    margin: 0 0 8px;
}

.sm-presets-header p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

.sm-presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
}

.sm-preset-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    color: var(--text-primary);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    text-align: left;
}

.sm-preset-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.sm-preset-card:active {
    transform: scale(0.98);
}

.sm-preset-swatch {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    border: 1px solid var(--border);
    box-shadow: inset 0 0 0 1px var(--border);
}

.sm-preset-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.3;
}

.sm-stage {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    /* #000 为屏幕替换定标的功能色，不属于主题令牌 */
    background: #000;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

.sm-stage.is-active {
    display: block;
}

.sm-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.sm-hint {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    border-radius: 999px;
    background: var(--overlay-bg);
    color: var(--text-on-accent);
    font-size: 13px;
    font-weight: 500;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.35s ease;
}

.sm-hint.is-visible {
    opacity: 1;
}

.sm-hint-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sm-menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1001;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--overlay-bg);
    backdrop-filter: blur(4px);
}

.sm-menu-overlay.is-visible {
    display: flex;
}

.sm-menu {
    width: min(420px, 100%);
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    border-radius: 20px;
    background: var(--bg-card);
    backdrop-filter: blur(24px);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 24px;
    color: var(--text-primary);
}

.sm-menu-section + .sm-menu-section {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.sm-menu-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0 0 12px;
    letter-spacing: 0.2px;
}

.sm-menu-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.sm-menu-options-3 {
    grid-template-columns: repeat(3, 1fr);
}

.sm-menu-option {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 10px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.sm-menu-option:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.sm-menu-option.is-active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--text-on-accent);
}

.sm-option-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    flex-shrink: 0;
    border: 1px solid var(--border);
}

.sm-option-dot-white {
    border-color: var(--text-tertiary);
}

.sm-menu-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.sm-menu-btn {
    flex: 1;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.sm-menu-btn:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.sm-menu-btn-danger {
    background: var(--color-danger-light);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.sm-menu-btn-danger:hover {
    background: var(--color-danger);
    color: var(--text-on-accent);
}

@media (max-width: 640px) {
    .sm-presets {
        padding: 20px;
    }

    .sm-presets-header h2 {
        font-size: 20px;
    }

    .sm-presets-grid {
        grid-template-columns: 1fr;
    }

    .sm-menu {
        padding: 20px;
    }
}