/* ============================================================
   CSS 渐变生成器 —— 页面私有样式（/devtools/css-gradient）
   通用结构复用 devtools.css，颜色只用 --c-* 变量或 rgba，自动适配黑夜模式
   ============================================================ */

[hidden] { display: none; }

/* 实时预览 */
.cg-preview {
    height: 220px;
    border-radius: 14px;
    border: 1px solid var(--c-border);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: background .15s ease;
    margin-bottom: 6px;
}

/* 类型选择行 */
.cg-type-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin: 16px 0 14px;
}

.cg-type-btns {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.cg-type-btn {
    padding: 7px 14px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 10px;
    border: 1px solid var(--c-border);
    background: var(--c-bg-soft);
    color: var(--c-text-muted);
    cursor: pointer;
    transition: all .15s ease;
}

.cg-type-btn:hover {
    border-color: var(--c-primary);
    color: var(--c-text);
}

.cg-type-btn.active {
    border-color: var(--c-primary);
    background: var(--c-primary-soft);
    color: var(--c-primary);
}

.cg-repeat { padding-bottom: 8px; }

/* 类型专属参数栅格（默认全部隐藏，JS 按类型点亮） */
.cg-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 14px;
}

.cg-only { display: none; }
.cg-only.on { display: flex; }

/* 滑杆铺满所在列 */
.cg-range {
    width: 100%;
    accent-color: var(--c-primary);
}

/* 色标列表 */
.cg-stops {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
}

.cg-stop {
    display: grid;
    grid-template-columns: 34px 44px minmax(0, 1fr) 64px 32px;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border: 1px solid var(--c-border);
    border-radius: 10px;
    background: var(--c-bg-soft);
}

.cg-stop .idx {
    font-size: 12px;
    font-weight: 700;
    color: var(--c-text-muted);
    text-align: center;
}

.cg-stop-color {
    width: 40px;
    height: 30px;
    padding: 2px;
    border: 1px solid var(--c-border);
    border-radius: 8px;
    background: var(--c-surface);
    cursor: pointer;
}

.cg-stop-pos {
    width: 100%;
    accent-color: var(--c-primary);
}

.cg-stop-pos-val {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--c-text-sub);
    text-align: right;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.cg-stop-del {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    border: 1px solid var(--c-border);
    background: var(--c-surface);
    color: var(--c-text-muted);
    cursor: pointer;
    font-size: 13px;
    line-height: 1;
    transition: all .15s ease;
}

.cg-stop-del:hover {
    color: #ff4d79;
    border-color: rgba(255, 77, 121, .6);
    background: rgba(255, 77, 121, .08);
}

.cg-stop-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

/* 精选模板 */
.cg-presets {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.cg-preset {
    height: 56px;
    border-radius: 10px;
    border: 1px solid var(--c-border);
    cursor: pointer;
    padding: 0;
    transition: transform .15s ease, box-shadow .15s ease;
}

.cg-preset:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, .14);
}

@media (max-width: 640px) {
    .cg-grid { grid-template-columns: 1fr; }

    .cg-stop {
        grid-template-columns: 34px 44px minmax(0, 1fr);
        row-gap: 6px;
    }

    .cg-stop-pos-val { text-align: left; }

    .cg-presets { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}