/* 图片分割 /tools/image-splitter —— class 前缀 isp-，沿用站点主题变量自动适配深/浅色
   复刻 tools.ai225.com/tools/image-splitter：上传区 / 分割设置 / 原图叠加分割框 / 单块下载 / ZIP 打包 */
.isp {
    width: 100%;
    box-sizing: border-box;
    padding: 22px 24px 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ===== 头部 ===== */
.isp-hero { display: flex; align-items: center; gap: 14px; }
.isp-hero-ico {
    width: 46px; height: 46px; flex: 0 0 46px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
    font-size: 24px; line-height: 1; background: color-mix(in srgb, var(--accent) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
}
.isp-hero-txt { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.isp-title { margin: 0; font-size: 22px; font-weight: 800; color: var(--text-primary); }
.isp-sub { margin: 0; font-size: 13.5px; line-height: 1.7; color: var(--text-secondary); }

/* ===== 主体：左设置 / 右预览 ===== */
.isp-main {
    display: grid; gap: 16px; align-items: start;
    grid-template-columns: 320px minmax(0, 1fr);
}
.isp-col { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

/* ===== 卡片 ===== */
.isp-card {
    background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 14px;
    padding: 14px 15px; display: flex; flex-direction: column; gap: 12px; min-width: 0;
}
.isp-card-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.isp-card-title { margin: 0; font-size: 14.5px; font-weight: 800; color: var(--text-primary); flex: 1 1 auto; }
.isp-card-sub { font-size: 12.5px; color: var(--text-secondary); font-weight: 500; }

/* ===== 通用控件 ===== */
.isp-btn {
    padding: 8px 14px; font-size: 13.5px; font-weight: 600; font-family: inherit; border-radius: 10px;
    border: 1px solid var(--border-color); background: var(--bg-primary); color: var(--text-primary);
    cursor: pointer; transition: all .15s;
}
.isp-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.isp-btn:disabled { opacity: .45; cursor: not-allowed; }
.isp-btn-sm { padding: 5px 10px; font-size: 12.5px; border-radius: 8px; }
.isp-btn-go { background: var(--accent); border-color: var(--accent); color: #fff; width: 100%; }
.isp-btn-go:hover:not(:disabled) { color: #fff; filter: brightness(1.08); }
.isp-btn-danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, transparent); }
.isp-btn-danger:hover:not(:disabled) { border-color: var(--danger); color: var(--danger); }

.isp-input, .isp-select {
    padding: 7px 10px; font-size: 13.5px; font-family: inherit; border-radius: 9px;
    border: 1px solid var(--border-color); background: var(--bg-secondary); color: var(--text-primary);
    min-width: 0; box-sizing: border-box;
}
.isp-input:focus, .isp-select:focus { outline: none; border-color: var(--accent); }
.isp-input:disabled, .isp-select:disabled { opacity: .5; cursor: not-allowed; }
.isp-input-sm { width: 88px; }
.isp-select { flex: 1 1 auto; }

/* 分段按钮（分割模式 / 参考站同款二选一） */
.isp-seg {
    display: flex; gap: 4px; padding: 3px; border-radius: 10px;
    background: var(--bg-secondary); border: 1px solid var(--border-color);
}
.isp-seg-btn {
    flex: 1 1 0; min-width: 0; padding: 6px 4px; font-size: 12.5px; font-weight: 600; font-family: inherit;
    border: 0; border-radius: 7px; background: transparent; color: var(--text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: 4px; transition: all .15s;
}
.isp-seg-btn.is-on {
    background: var(--bg-primary); color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}

/* ===== 设置行 ===== */
.isp-row { display: flex; flex-direction: column; gap: 6px; }
.isp-row.is-inline { flex-direction: row; align-items: center; justify-content: space-between; gap: 10px; }
.isp-label { font-size: 12.5px; font-weight: 600; color: var(--text-secondary); }
.isp-hint { font-size: 11.5px; color: var(--text-secondary); line-height: 1.5; margin: 0; }
.isp-check { display: flex; align-items: center; gap: 7px; cursor: pointer; font-size: 13px; color: var(--text-primary); }
.isp-check input { width: 16px; height: 16px; accent-color: var(--accent); flex: 0 0 auto; }
.isp-check.is-disabled { opacity: .55; cursor: not-allowed; }

/* 快捷预设 */
.isp-presets { display: flex; gap: 6px; flex-wrap: wrap; }
.isp-preset {
    padding: 4px 10px; font-size: 12px; font-family: inherit; border-radius: 20px; cursor: pointer;
    border: 1px solid var(--border-color); background: var(--bg-secondary); color: var(--text-secondary);
    transition: all .15s;
}
.isp-preset:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.isp-preset:disabled { opacity: .45; cursor: not-allowed; }

.isp-range { display: flex; align-items: center; gap: 10px; }
.isp-range input[type="range"] { flex: 1 1 auto; min-width: 0; accent-color: var(--accent); }
.isp-range-val { font-size: 12.5px; font-weight: 700; color: var(--text-primary); min-width: 42px; text-align: right; }

/* ===== 上传区（空态，参考站 2px dashed 大区） ===== */
.isp-drop {
    border: 2px dashed color-mix(in srgb, var(--text-primary) 22%, transparent); border-radius: 14px;
    background: var(--bg-secondary); padding: 44px 20px; text-align: center; cursor: pointer;
    display: flex; flex-direction: column; align-items: center; gap: 8px; transition: border-color .15s;
}
.isp-drop:hover, .isp-drop.is-over { border-color: var(--accent); }
.isp-drop-ico { font-size: 40px; line-height: 1; opacity: .5; }
.isp-drop-tx { margin: 0; font-size: 15px; font-weight: 600; color: var(--text-primary); }
.isp-drop-sub { margin: 0; font-size: 12.5px; color: var(--text-secondary); }
.isp-drop[hidden] { display: none !important; }

/* ===== 预览：原图 + 叠加分割框 ===== */
.isp-prev {
    position: relative; border: 1px solid var(--border-color); border-radius: 12px; background: var(--bg-secondary);
    padding: 12px; overflow: auto; min-height: 220px; display: flex; align-items: center; justify-content: center;
}
.isp-prev[hidden] { display: none !important; }
.isp-stage { position: relative; max-width: 100%; }
.isp-stage img { display: block; max-width: 100%; height: auto; border-radius: 4px; }
.isp-overlay { position: absolute; inset: 0; }
.isp-cell-box {
    position: absolute; border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
    transition: background-color .15s; cursor: pointer;
}
.isp-cell-box:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.isp-cell-btn {
    position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
    display: none; align-items: center; gap: 4px; padding: 5px 12px; border-radius: 20px;
    background: var(--accent); color: #fff; border: 0; font-size: 12px; font-weight: 600;
    font-family: inherit; cursor: pointer; box-shadow: 0 3px 10px rgba(0, 0, 0, .25); white-space: nowrap;
}
.isp-cell-box:hover .isp-cell-btn, .isp-cell-box:focus-within .isp-cell-btn { display: flex; }
.isp-cell-idx {
    position: absolute; left: 2px; top: 2px; padding: 0 4px; border-radius: 4px; font-size: 10px; line-height: 15px;
    background: rgba(0, 0, 0, .55); color: #fff; pointer-events: none;
}

/* ===== 统计 ===== */
.isp-meta { display: flex; flex-wrap: wrap; gap: 8px 14px; font-size: 12.5px; color: var(--text-secondary); }
.isp-meta b { color: var(--text-primary); font-variant-numeric: tabular-nums; }

/* ===== 切块列表 ===== */
.isp-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(118px, 1fr)); gap: 10px;
}
.isp-grid[hidden] { display: none !important; }
.isp-item {
    border: 1px solid var(--border-color); border-radius: 11px; background: var(--bg-secondary);
    padding: 7px; display: flex; flex-direction: column; gap: 6px; position: relative; min-width: 0;
    content-visibility: auto; contain-intrinsic-size: auto 140px;
}
.isp-thumb {
    width: 100%; height: 74px; border-radius: 8px; overflow: hidden; background: var(--bg-primary);
    display: flex; align-items: center; justify-content: center;
}
.isp-thumb canvas { max-width: 100%; max-height: 100%; display: block; }
.isp-item-meta { font-size: 11px; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.isp-item-idx {
    position: absolute; top: 5px; left: 5px; min-width: 18px; height: 18px; padding: 0 4px; border-radius: 5px;
    background: rgba(0, 0, 0, .6); color: #fff; font-size: 10px; font-weight: 700; line-height: 18px; text-align: center;
}
.isp-item-btn {
    padding: 4px 0; font-size: 12px; font-family: inherit; cursor: pointer; border-radius: 7px;
    border: 1px solid var(--border-color); background: var(--bg-primary); color: var(--text-secondary);
}
.isp-item-btn:hover:not(:disabled) { color: var(--accent); border-color: var(--accent); }
.isp-item-btn:disabled { opacity: .45; cursor: not-allowed; }

/* ===== 提示条 ===== */
.isp-note {
    margin: 0; padding: 9px 13px; border-radius: 11px; font-size: 13px; line-height: 1.6;
    border: 1px solid var(--border-color); background: var(--bg-secondary); color: var(--text-secondary);
}
.isp-note[hidden] { display: none !important; }
.isp-note.is-err { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, transparent); }
.isp-note.is-ok { color: #15803d; border-color: #86efac; }

/* ===== 说明区 ===== */
.isp-info {
    background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 14px; padding: 16px 18px;
}
.isp-info h2 { margin: 0 0 8px; font-size: 15px; font-weight: 800; color: var(--text-primary); }
.isp-info p { margin: 0 0 12px; font-size: 13.5px; line-height: 1.8; color: var(--text-secondary); }
.isp-info h3 { margin: 0 0 8px; font-size: 13.5px; font-weight: 800; color: var(--text-primary); }
.isp-info ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.isp-info li { font-size: 13px; line-height: 1.7; color: var(--text-secondary); }

/* [hidden] 兜底：站点里部分元素声明了 display，会覆盖原生 hidden */
.isp [hidden] { display: none !important; }

/* ===== 响应式 ===== */
@media (max-width: 1099px) {
    .isp-main { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 767px) {
    .isp { padding: 16px 14px 34px; }
    .isp-hero-ico { width: 40px; height: 40px; flex-basis: 40px; font-size: 21px; }
    .isp-title { font-size: 19px; }
    .isp-card { padding: 12px; }
    .isp-drop { padding: 30px 16px; }
    .isp-prev { padding: 8px; min-height: 180px; }
    .isp-grid { grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 8px; }
    /* iOS 聚焦缩放防护 */
    .isp-input, .isp-select { font-size: 16px; }
    .isp-seg-btn { font-size: 13px; padding: 8px 4px; }
    /* 手机端 hover 不可靠，下载按钮常显 */
    .isp-cell-btn { display: flex; font-size: 11px; padding: 4px 9px; }
}
@media (max-width: 420px) {
    .isp-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .isp-hero { gap: 10px; }
}