/* ===== ImgCompress 样式（色板与顶栏/面板/表格和 GlycoCalc、Grapher 完全一致；
   新增的只有拖放区、进度标签与对比弹层） ===== */
:root {
  --bg: #f5f6f8;
  --bg-card: #ffffff;
  --bg-hover: #f0f2f5;
  --text: #2c3e50;
  --text-sub: #7f8c9b;
  --border: #e8ebef;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, .1);
  --accent-text: #fff;
  --danger: #e2544d;
  --ok: #2f9e5f;
  --shadow: 0 2px 8px rgba(30, 40, 60, .06);
  --bar-bg: #f7f8fa;
  --code-bg: #f4f6f9;
  --tag-bg: #eef2f7;
  --group-line: #dfe5ec;
  --checker: #e9edf2;
}

html[data-theme="dark"] {
  --bg: #060a17;
  --bg-card: #0d1424;
  --bg-hover: #1a2336;
  --text: #dce3ec;
  --text-sub: #8794a8;
  --border: #1e2a44;
  --accent: #4d94ff;
  --accent-soft: rgba(77, 148, 255, .16);
  --danger: #ff6b64;
  --ok: #4ade80;
  --shadow: 0 2px 10px rgba(0, 0, 0, .5);
  --bar-bg: #0a1120;
  --code-bg: #101a30;
  --tag-bg: #16213a;
  --group-line: #24334f;
  --checker: #131d33;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-variant-numeric: tabular-nums;
  transition: background .25s, color .25s;
}

/* ===== 顶栏 ===== */
.topbar {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 18px; background: var(--bar-bg);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.topbar .back { color: var(--accent); text-decoration: none; font-size: 14px; white-space: nowrap; }
.topbar .back:hover { text-decoration: underline; }
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark { width: 34px; height: 34px; border-radius: 8px; background: var(--accent-soft); display: flex; align-items: center; justify-content: center; flex: none; }
.brand-mark img { width: 26px; height: 26px; }
.brand-text h1 { font-size: 17px; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand-text p { font-size: 12px; color: var(--text-sub); line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.spacer { flex: 1; }
.icon-btn {
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text);
  border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 15px; line-height: 1;
}
.icon-btn:hover { background: var(--bg-hover); }
.lang-switch { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.lang-btn {
  border: none; background: var(--bg-card); color: var(--text-sub);
  padding: 6px 10px; font-size: 13px; cursor: pointer; text-decoration: none;
}
.lang-btn + .lang-btn { border-left: 1px solid var(--border); }
.lang-btn.active { background: var(--accent); color: var(--accent-text); }

/* ===== 布局与面板 ===== */
.ic { max-width: 1100px; margin: 0 auto; padding: 14px 16px 4px; }
.panel {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px 16px; box-shadow: var(--shadow); margin-bottom: 14px;
}
.sec-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 10px; }
.sec-head h2 { font-size: 16px; margin-right: auto; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.btn {
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text);
  border-radius: 8px; padding: 6px 13px; cursor: pointer; font-size: 13.5px;
  text-decoration: none; display: inline-block;
}
.btn:hover { background: var(--bg-hover); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn-primary:hover { filter: brightness(1.06); background: var(--accent); }
.btn-sm { padding: 3px 9px; font-size: 12px; border-radius: 6px; }
.btn-danger { color: var(--danger); }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* ===== 拖放区 ===== */
.dropzone {
  border: 2px dashed var(--group-line); border-radius: 12px;
  padding: 34px 16px 26px; text-align: center; cursor: pointer;
  transition: border-color .15s, background .15s;
  outline: none;
}
.dropzone:hover, .dropzone:focus-visible, .dropzone.drag,
body.dragging-file .dropzone {
  border-color: var(--accent); background: var(--accent-soft);
}
/* 整页拖放中：全页蒙层提示「松手即加入」（pointer-events:none 让 drop 事件
   照常落在底层元素上，由 document 级监听统一处理） */
body.dragging-file::after {
  content: ""; position: fixed; inset: 0; z-index: 90;
  background: var(--accent-soft);
  outline: 3px dashed var(--accent); outline-offset: -10px;
  pointer-events: none;
}
.dz-icon { color: var(--accent); opacity: .85; }
.dz-title { font-size: 17px; font-weight: 600; margin-top: 6px; }
.dz-sub { font-size: 13px; color: var(--text-sub); margin: 2px 0 12px; }
.dz-hint { font-size: 12px; color: var(--text-sub); margin-top: 12px; max-width: 560px; margin-left: auto; margin-right: auto; }

/* ===== 设置区 ===== */
.settings { display: flex; flex-wrap: wrap; gap: 12px 28px; }
.fieldset { display: flex; flex-direction: column; gap: 6px; min-width: 150px; }
.fieldset .lb { font-size: 12.5px; color: var(--text-sub); font-weight: 600; }
.fieldset .lb output { color: var(--accent); font-variant-numeric: tabular-nums; }
.fmt-group { flex: 1 1 260px; }
.fmt-group label { display: inline-flex; align-items: center; gap: 5px; margin-right: 14px; font-size: 13.5px; cursor: pointer; }
.fmt-group input[type="radio"] { accent-color: var(--accent); width: 16px; height: 16px; }
.fieldset select {
  font: inherit; font-size: 13.5px; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 7px; padding: 4px 8px; width: 96px;
}
.fieldset input[type="range"] { accent-color: var(--accent); width: 170px; }
.hint { font-size: 12.5px; color: var(--text-sub); margin: 10px 0 0; }

/* ===== 队列表格 ===== */
.stats { font-size: 13px; color: var(--text-sub); margin-bottom: 8px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th, table.data td { padding: 5px 9px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--border); }
table.data th {
  background: var(--bar-bg); color: var(--text-sub); font-weight: 600; font-size: 12px;
  position: sticky; top: 0; z-index: 1;
}
table.data th.left, table.data td.left { text-align: left; }
table.data tbody tr:last-child td { border-bottom: none; }
table.data tbody tr:hover { background: var(--bg-hover); }
table.data td.c-name { max-width: 320px; }
.fname { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 300px; }
.fnote { font-size: 11.5px; color: var(--text-sub); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 300px; }
table.data td.num { font-variant-numeric: tabular-nums; }
table.data td.st, table.data td.ops { text-align: center; }
table.data td.ops { white-space: nowrap; }
table.data td.ops .btn + .btn { margin-left: 6px; }
.c-thumb { width: 64px; }
.thumb {
  width: 52px; height: 52px; object-fit: contain; border-radius: 6px;
  border: 1px solid var(--border); background:
    linear-gradient(45deg, var(--checker) 25%, transparent 25%, transparent 75%, var(--checker) 75%),
    linear-gradient(45deg, var(--checker) 25%, transparent 25%, transparent 75%, var(--checker) 75%);
  background-size: 12px 12px; background-position: 0 0, 6px 6px;
}
.good { color: var(--ok); font-weight: 600; }
.dim { color: var(--text-sub); }
.empty { text-align: center; color: var(--text-sub); font-size: 13.5px; padding: 6px 0 30px; }

/* 状态标签 */
.tag-wait, .tag-work, .tag-ok, .tag-err {
  display: inline-block; padding: 1px 9px; border-radius: 999px; font-size: 11.5px;
}
.tag-wait { background: var(--tag-bg); color: var(--text-sub); }
.tag-work { background: var(--accent-soft); color: var(--accent); }
.tag-ok { background: rgba(47, 158, 95, .12); color: var(--ok); }
.tag-err { background: rgba(226, 84, 77, .12); color: var(--danger); cursor: help; max-width: 220px; overflow: hidden; text-overflow: ellipsis; }

/* ===== 对比弹层 ===== */
.cmp-mask {
  position: fixed; inset: 0; background: rgba(10, 16, 30, .55); z-index: 80;
  display: none; align-items: center; justify-content: center; padding: 18px;
}
.cmp-mask.show { display: flex; }
.cmp-box {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: var(--shadow); max-width: 1100px; width: 100%; max-height: 92vh;
  display: flex; flex-direction: column; overflow: hidden;
}
.cmp-tabs { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.cmp-tabs .btn.active { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.cmp-meta { font-size: 12px; color: var(--text-sub); }
.cmp-stage {
  overflow: auto; padding: 14px; text-align: center; flex: 1;
  background:
    linear-gradient(45deg, var(--checker) 25%, transparent 25%, transparent 75%, var(--checker) 75%),
    linear-gradient(45deg, var(--checker) 25%, transparent 25%, transparent 75%, var(--checker) 75%);
  background-size: 20px 20px; background-position: 0 0, 10px 10px;
}
.cmp-stage img { max-width: 100%; max-height: 70vh; box-shadow: 0 2px 12px rgba(0,0,0,.25); background: #fff; }

/* ===== 说明区（SEO 主体） ===== */
.doc { max-width: 1100px; margin: 10px auto 40px; padding: 18px 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); }
.doc h2 { font-size: 16px; margin: 18px 0 6px; }
.doc h2:first-child { margin-top: 0; }
.doc p { font-size: 14px; margin-bottom: 8px; }
.doc ul, .doc ol { margin: 0 0 8px 20px; font-size: 14px; }
.doc li { margin-bottom: 5px; }
.doc dl.faq dt { font-weight: 600; font-size: 14px; margin-top: 10px; }
.doc dl.faq dd { font-size: 14px; color: var(--text-sub); margin-left: 0; }
.doc .rel-links { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.doc .rel-links a {
  display: inline-block; padding: 4px 12px; background: var(--tag-bg);
  border-radius: 999px; color: var(--accent); text-decoration: none; font-size: 13px;
}
.doc .rel-links a:hover { background: var(--accent-soft); text-decoration: none; }
.doc .ver { font-size: 12px; color: var(--text-sub); border-top: 1px solid var(--border); padding-top: 10px; margin-top: 14px; }

/* ===== Toast ===== */
.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%) translateY(12px);
  background: var(--text); color: var(--bg-card); padding: 8px 18px; border-radius: 999px;
  font-size: 13px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 90;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 720px) {
  .topbar { flex-wrap: wrap; gap: 8px; padding: 8px 12px; }
  .topbar .back { font-size: 13px; }
  .brand { flex: 1 1 auto; }
  .brand-text p { display: none; }
  .spacer { display: none; }
  .ic { padding: 10px 10px 0; }
  .panel { padding: 12px; }
  .sec-head h2 { font-size: 15px; }
  .dropzone { padding: 24px 10px 20px; }
  .settings { gap: 10px 18px; }
  .fieldset input[type="range"] { width: 140px; }
  table.data th, table.data td { padding: 4px 7px; }
  table.data td.c-name { max-width: 150px; }
  .fname, .fnote { max-width: 150px; }
  .c-thumb { width: 48px; }
  .thumb { width: 40px; height: 40px; }
}