/**
 * 工具站公共样式 —— 设计令牌 + 通用组件
 *
 * 各工具页面只写自己独有的部分，其余全部复用这里。
 * 改配色只改 :root，所有工具同步生效。
 */

:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --line: #e3e6ec;
  --text: #1d2129;
  --sub: #6b7280;
  --main: #2e7cf6;
  --main-dark: #1f63d0;
  --ok: #12a150;
  --radius: 14px;
}

* { box-sizing: border-box; }
/* hidden 属性要能压过 .field / .result 这类自带 display 的类 */
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background:
    radial-gradient(1200px 500px at 50% -220px, #e8f0ff 0%, rgba(232,240,255,0) 70%),
    var(--bg);
  color: var(--text);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 48px 20px 80px; }

/* ── 页头 ───────────────────────────────────────────────────────────────── */

header { text-align: center; margin-bottom: 32px; }
header h1 {
  margin: 0 0 10px;
  font-size: 30px;
  letter-spacing: -.4px;
  font-weight: 700;
}
header .lead { margin: 0 0 14px; color: var(--sub); font-size: 15px; }
.privacy {
  display: inline-flex; align-items: center; gap: 6px;
  margin: 0; padding: 6px 14px;
  font-size: 13px; color: #1f7a4d;
  background: #eaf7f0; border: 1px solid #c9ebda; border-radius: 999px;
}
.privacy svg { flex: 0 0 auto; width: 13px; height: 13px; }

/* ── 返回条（工具页顶部） ───────────────────────────────────────────────── */

.crumb {
  display: inline-flex; align-items: center; gap: 6px;
  margin-bottom: 18px; padding: 0;
  font-size: 13px; color: var(--sub); text-decoration: none;
}
.crumb:hover { color: var(--main); }

/* ── 卡片 ───────────────────────────────────────────────────────────────── */

.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px 24px;
  margin-bottom: 16px;
}
.card h2 {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 600;
  display: flex; align-items: center; gap: 10px;
}
.step {
  position: absolute; top: 20px; right: 22px;
  width: 22px; height: 22px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600;
  color: var(--main); background: #eaf2ff;
}

/* ── 上传区 ─────────────────────────────────────────────────────────────── */

.dropzone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; padding: 34px 20px;
  border: 2px dashed #d5dae3; border-radius: 12px;
  background: #fbfcfe; cursor: pointer;
  transition: border-color .18s, background .18s;
  text-align: center;
}
.dropzone:hover, .dropzone.drag { border-color: var(--main); background: #f2f7ff; }
.dz-icon { font-size: 26px; line-height: 1; color: var(--main); }
.dz-icon svg { width: 26px; height: 26px; display: block; }
.dz-main { font-weight: 500; }
.dz-sub { font-size: 13px; color: var(--sub); }

.fileinfo {
  margin-top: 14px; padding: 12px 14px;
  background: #f7f9fc; border: 1px solid var(--line); border-radius: 10px;
  font-size: 14px;
}
.fileinfo b { font-weight: 600; }
.fileinfo .warn { color: #b45309; }

/* ── 单选组 ─────────────────────────────────────────────────────────────── */

.radios { display: grid; gap: 10px; }
.radios label {
  display: flex; align-items: baseline; gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--line); border-radius: 10px;
  cursor: pointer; transition: border-color .15s, background .15s;
}
.radios label:hover { border-color: #c3cddd; background: #fafbfd; }
.radios input { margin: 0; accent-color: var(--main); }
.radios em { font-style: normal; color: var(--sub); font-size: 13px; }
.radios label:has(input:checked) { border-color: var(--main); background: #f4f8ff; }

textarea {
  width: 100%; margin-top: 12px; min-height: 110px; resize: vertical;
  padding: 12px 14px; font: inherit; font-size: 14px;
  border: 1px solid var(--line); border-radius: 10px; outline: none;
}
textarea:focus { border-color: var(--main); }

/* 一行设置：左标签 + 右控件（控件统一占同一列，右边缘才能对齐） */
.field {
  display: grid; grid-template-columns: 84px 1fr;
  align-items: center; gap: 12px;
  margin-top: 14px;
}
.field > span { font-size: 14px; color: var(--sub); }
.field .ctl { display: flex; align-items: center; gap: 12px; min-width: 0; }
.field .ctl input[type="range"] { flex: 1; min-width: 0; }
.field output {
  flex: 0 0 auto;
  font-size: 14px; font-weight: 600;
  font-variant-numeric: tabular-nums;
  min-width: 44px; text-align: right;
}

input[type="range"] {
  width: 100%; margin: 0; accent-color: var(--main); cursor: pointer;
}

select {
  width: 100%; padding: 9px 12px; font: inherit; font-size: 14px;
  color: var(--text); background: #fff;
  border: 1px solid var(--line); border-radius: 10px; outline: none;
}
select:focus { border-color: var(--main); }

/* 分段选择：一排按钮，一眼看全所有选项，也不用点开下拉 */
.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg-i {
  padding: 6px 11px; font: inherit; font-size: 13px; line-height: 1.25;
  color: var(--sub); background: #fff;
  border: 1px solid var(--line); border-radius: 8px;
  cursor: pointer;
  transition: border-color .15s, color .15s, background .15s;
}
.seg-i:hover { border-color: #c3cddd; color: var(--text); }
.seg-i.on {
  color: var(--main); border-color: var(--main); background: #f4f8ff;
  font-weight: 600;
}

input[type="color"] {
  width: 44px; height: 30px; padding: 2px; margin: 0;
  background: #fff; border: 1px solid #c6cdda; border-radius: 8px;
  cursor: pointer;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 5px; }

.hex {
  font-size: 13px; color: var(--sub);
  font-variant-numeric: tabular-nums; text-transform: uppercase;
}

/* 紧凑的文件选择按钮 */
.pick {
  display: inline-flex; align-items: center; gap: 8px;
  max-width: 100%; padding: 8px 14px;
  font-size: 13px; color: var(--text);
  background: #fff; border: 1px dashed var(--line); border-radius: 10px;
  cursor: pointer; transition: border-color .15s, background .15s;
}
.pick:hover { border-color: var(--main); background: #f7faff; }
.pick.on { border-style: solid; border-color: var(--main); background: #f4f8ff; }
.pick span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.linkish {
  padding: 0; background: none; border: none; cursor: pointer;
  font: inherit; font-size: 13px; color: var(--sub);
}
.linkish:hover { color: #c62828; }

.hint { margin: 10px 0 0; font-size: 12px; color: var(--sub); }

/* 代码片段 */
.code {
  margin: 0 0 12px; padding: 13px 15px;
  background: #f7f9fc; border: 1px solid var(--line); border-radius: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px; line-height: 1.75; color: #33415c;
  white-space: pre-wrap; word-break: break-all;
}

/* ── 按钮 ───────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 100%; padding: 13px 18px;
  font: inherit; font-weight: 600; color: #fff;
  background: var(--main); border: none; border-radius: 11px;
  cursor: pointer; text-decoration: none;
  transition: background .15s, transform .05s;
}
.btn:hover:not(:disabled) { background: var(--main-dark); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { background: #b9c4d4; cursor: not-allowed; }
.btn.ghost {
  background: #fff; color: var(--text); border: 1px solid var(--line);
}
.btn.ghost:hover { background: #f6f8fb; }
.btn.sm { width: auto; padding: 8px 14px; font-size: 13px; }

/* ── 结果区 ─────────────────────────────────────────────────────────────── */

/* 靠 hidden 属性控制显隐，不要在这里写 display —— 会覆盖 [hidden] 的默认值 */
.result[hidden] { display: none; }
.stats {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding: 18px 16px; margin-bottom: 18px;
  background: #f7f9fc; border-radius: 12px; text-align: center;
}
.stats > div { flex: 1; }
.stats span { display: block; font-size: 19px; font-weight: 700; letter-spacing: -.3px; }
.stats small { display: block; font-size: 12px; color: var(--sub); margin-top: 2px; }
.stats .arrow { flex: 0 0 auto; color: #b6bfcd; font-size: 18px; }
.stats .save span { color: var(--ok); }

.preview {
  padding: 16px 18px; margin-bottom: 18px;
  border: 1px solid var(--line); border-radius: 12px;
  font-size: 22px; line-height: 1.75; word-break: break-word;
}
.preview small {
  display: block; margin-bottom: 6px;
  font-size: 12px; font-weight: 400; color: var(--sub);
}

.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.status {
  min-height: 22px; margin: 4px 0 0; text-align: center;
  font-size: 13px; color: var(--sub);
}
.status.err { color: #c62828; }

/* ── 工具目录页 ─────────────────────────────────────────────────────────── */

/* 分类分组 */
.cat { margin-bottom: 30px; }
.cat:last-child { margin-bottom: 0; }
.cat-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 12px; }
.cat-head h2 {
  margin: 0; font-size: 13px; font-weight: 600; letter-spacing: .3px;
  color: var(--text);
}
.cat-head h2::before {
  content: ""; display: inline-block;
  width: 3px; height: 12px; margin-right: 8px;
  border-radius: 2px; background: var(--main); vertical-align: -1px;
}
.cat-head p { margin: 0; font-size: 12px; color: var(--sub); }

/* 一格一个功能：网格卡片 */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.tool-card {
  position: relative;
  display: flex; flex-direction: column; gap: 12px;
  min-height: 152px; padding: 18px 18px 20px;
  background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; color: inherit;
  transition: border-color .16s, transform .16s, box-shadow .16s;
}
.tool-card:hover {
  border-color: var(--main);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px -8px rgba(46, 124, 246, .35);
}
.tool-card .ico {
  flex: 0 0 auto;
  width: 40px; height: 40px; border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  background: #eaf2ff; color: var(--main);
}
.tool-card .ico svg { width: 21px; height: 21px; display: block; }
.tool-card .body { flex: 1; min-width: 0; }
.tool-card h3 { margin: 0 0 5px; font-size: 15px; font-weight: 600; }
.tool-card p { margin: 0; font-size: 13px; color: var(--sub); line-height: 1.55; }
.tool-card .go {
  position: absolute; right: 16px; top: 20px;
  color: #b6bfcd; font-size: 16px; line-height: 1;
  opacity: 0; transition: opacity .16s, color .16s;
}
.tool-card:hover .go { opacity: 1; color: var(--main); }

.tool-card .soon {
  position: absolute; right: 14px; top: 16px;
  padding: 2px 9px; border-radius: 999px;
  font-size: 11px; color: #8d97a6; background: #f1f3f6;
}

.tool-card[aria-disabled="true"] .ico { background: #f1f3f6; color: #9aa4b2; }
.tool-card[aria-disabled="true"] {
  opacity: .6; pointer-events: none; filter: grayscale(1);
}

footer.site {
  margin-top: 36px; text-align: center;
  font-size: 12px; color: #9aa4b2;
}
footer.site a { color: inherit; }

/* ── 响应式 ─────────────────────────────────────────────────────────────── */

@media (max-width: 560px) {
  .wrap { padding: 32px 14px 60px; }
  header h1 { font-size: 24px; }
  .card { padding: 18px 16px 20px; }
  .actions { grid-template-columns: 1fr; }
  .stats { flex-wrap: wrap; }
  .field { grid-template-columns: 72px 1fr; gap: 10px; }
  .tool-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
  .tool-card { min-height: 132px; padding: 14px 14px 16px; }
  /* 竖屏两列时卡片窄，描述最多三行，多了省略，保证同行等高 */
  .tool-card p {
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .tool-card .soon { right: 10px; top: 12px; }
  .cat-head p { display: none; }
}