/* 搞定PDF · 共享样式(办公风浅色主题:清爽、大字号、低装饰) */

/* 全站统一字体 MiSans(小米开源·免费商用),Mac/Windows 完全一致。
   font-display:swap:字体加载期间先用系统字显示,不阻塞;加载完自动换成 MiSans。 */
@font-face {
  font-family: "MiSans";
  src: url("vendor/fonts/MiSans-Regular.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "MiSans";
  src: url("vendor/fonts/MiSans-Bold.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap;
}

:root {
  --primary: #6B8CAE;        /* 莫兰迪雾霾蓝 */
  --primary-dark: #5D7D9C;
  --primary-light: #EAF0F5;
  --bg: #EFEDE9;             /* 燕麦灰 */
  --paper: #FBFAF8;          /* 暖白 */
  --card: #ffffff;
  --deep: #5E6B75;           /* 深灰蓝(替代纯黑卡) */
  --text: #3B3F45;
  --text2: #5C6066;
  --text3: #8C8880;
  --border: #DAD6CF;
  --danger: #B96A6A;
  --success: #7E9E87;
  --radius: 14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "MiSans", -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", "微软雅黑", "Hiragino Sans GB", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}
.container { max-width: 1000px; margin: 0 auto; padding: 28px 16px 60px; }

/* ===== 顶栏 ===== */
.topbar {
  background: rgba(251, 251, 253, .85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, .07);
  position: sticky; top: 0; z-index: 90;
}
.topbar-inner {
  max-width: 1000px; margin: 0 auto;
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px 10px;
}
.topbar .brand {
  font-size: 19px; font-weight: 700; color: var(--text);
  text-decoration: none; display: flex; align-items: center; gap: 8px;
}
.topbar .brand svg { width: 24px; height: 24px; }
.topbar .toolname { color: var(--text3); font-size: 15px; }
.topbar .spacer { flex: 1; }
.topbar .nav-link {
  color: var(--text2); text-decoration: none; font-size: 15px;
  padding: 6px 14px; border-radius: 8px;
}
.topbar .nav-link:hover { background: var(--primary-light); color: var(--primary); }

/* 工具导航条(顶栏第二行) */
.tool-strip {
  max-width: 1000px; margin: 0 auto;
  display: flex; gap: 2px; padding: 0 12px 8px;
  overflow-x: auto; scrollbar-width: none;
}
.tool-strip::-webkit-scrollbar { display: none; }
.tool-strip a {
  color: var(--text2); text-decoration: none;
  font-size: 14px; padding: 4px 12px; border-radius: 6px;
  white-space: nowrap;
}
.tool-strip a:hover { color: var(--primary); background: var(--primary-light); }
.tool-strip a.current { color: var(--primary); background: var(--primary-light); font-weight: 600; }

/* ===== 通用组件 ===== */
h1.page-title { font-size: 28px; text-align: center; margin-bottom: 8px; letter-spacing: .5px; }
p.page-subtitle { text-align: center; color: var(--text3); font-size: 15px; margin-bottom: 26px; }

.drop-zone {
  border: 1.5px dashed #c4ccda;
  border-radius: var(--radius);
  background: var(--card);
  padding: 44px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.drop-zone:hover, .drop-zone.dragover { border-color: var(--primary); background: #fbfdff; }
.drop-zone .up-icon { width: 44px; height: 44px; color: var(--primary); margin-bottom: 10px; }
.drop-zone p { color: var(--text); font-size: 17px; }
.drop-zone p strong { color: var(--primary); }
.drop-zone small { color: var(--text3); font-size: 14px; display: block; margin-top: 8px; }

.card {
  background: var(--card);
  border: none;
  border-radius: 18px;
  padding: 24px 28px;
  margin-top: 16px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .04);
}

.error-box {
  display: none;
  background: #fdf2f2; border: 1px solid #f3c1c1;
  border-radius: var(--radius); padding: 14px 18px; margin-top: 16px;
  color: #b32424; font-size: 15px;
}

.progress-wrap { display: none; }
.progress-text { font-size: 15px; color: var(--text2); margin-bottom: 10px; }
.progress-bar-bg { height: 6px; background: #edf0f5; border-radius: 3px; overflow: hidden; }
.progress-bar {
  height: 100%; width: 0%;
  background: var(--primary); border-radius: 3px;
  transition: width .2s;
}

.btn {
  border: none; border-radius: 980px;
  padding: 11px 24px;
  font-size: 15px; font-weight: 500;
  cursor: pointer;
  transition: background .15s, opacity .15s;
  white-space: nowrap;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }
.btn-ghost { background: #f2f3f7; color: var(--text2); }
.btn-ghost:hover:not(:disabled) { background: #e8eaf0; }
.btn-big { font-size: 16px; padding: 12px 34px; }

.text-input {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  transition: border-color .15s;
  background: #fff;
  color: var(--text);
}
.text-input:focus { border-color: var(--primary); }
.text-input::placeholder { color: #a9b0bc; }

/* 缩略图网格(选页) */
.thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
  max-height: 480px;
  overflow-y: auto;
  padding: 4px;
}
.thumb {
  position: relative;
  border: 2px solid #e7eaf1;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color .12s;
  background: #fafafa;
}
.thumb img, .thumb canvas { width: 100%; display: block; }
.thumb .pnum {
  position: absolute; left: 6px; bottom: 6px;
  background: rgba(29,33,41,.6); color: #fff;
  font-size: 12px; font-weight: 600;
  padding: 1px 8px; border-radius: 9px;
}
.thumb .check {
  position: absolute; right: 6px; top: 6px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: #fff; border: 1.5px solid #cbd2e0;
  color: transparent;
  font-size: 13px; line-height: 18px; text-align: center;
}
.thumb.selected { border-color: var(--primary); }
.thumb.selected .check { background: var(--primary); border-color: var(--primary); color: #fff; }

/* 遮罩 */
.overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(29,33,41,.45); z-index: 200;
  align-items: center; justify-content: center;
}
.overlay.show { display: flex; }
.overlay .box {
  background: #fff; border-radius: 12px; padding: 32px 48px;
  text-align: center; font-size: 16px;
}
.spinner {
  width: 34px; height: 34px; margin: 0 auto 14px;
  border: 3px solid var(--primary-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Toast */
#toast-wrap {
  position: fixed; top: 64px; left: 50%;
  transform: translateX(-50%); z-index: 300;
  display: flex; flex-direction: column; gap: 8px; align-items: center;
}
.toast {
  background: #323639; color: #fff;
  padding: 10px 22px; border-radius: 8px;
  font-size: 15px; max-width: 80vw;
  box-shadow: 0 4px 12px rgba(0,0,0,.18);
  animation: fadein .2s;
}
.toast.err { background: var(--danger); }
.toast.ok { background: var(--success); }
@keyframes fadein { from { opacity: 0; transform: translateY(-8px); } }

footer.site-footer {
  text-align: center; color: var(--text3); font-size: 13px;
  margin-top: 36px; line-height: 2;
}
footer.site-footer a { color: var(--text3); }