/* ============================================================
 * style.css — 890一生一世PDF工具箱
 * 纯色背景、无渐变、无外部图片
 * ============================================================ */

:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --border: #e4e7ec;
  --border-strong: #d3d8e0;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #e5484d;
  --accent-dark: #c93a3f;
  --accent-soft: #fdecec;
  --green: #1a9e6c;
  --green-soft: #e8f7f0;
  --danger: #d92d20;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

/* ---------- 顶部栏 ---------- */
.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 1px;
  flex: 0 0 auto;
  overflow: hidden;
}
.brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.brand-text h1 { font-size: 17px; font-weight: 700; line-height: 1.3; }
.brand-text p { font-size: 12px; color: var(--muted); }

.doc-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 10px;
  max-width: 100%;
}
.doc-bar.empty { opacity: 0.75; }
.doc-info { font-size: 13px; color: var(--muted); max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-name { color: var(--text); font-weight: 600; margin-right: 8px; }
.doc-meta { color: var(--muted); }
.txt-accent { color: var(--accent); }

/* ---------- 语言切换 ---------- */
.topbar-right { display: flex; align-items: center; gap: 10px; }
.lang-switch {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
  flex: 0 0 auto;
}
.lang-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 700;
  padding: 5px 12px;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 0.12s, color 0.12s;
}
.lang-btn:hover { background: #f1f3f6; }
.lang-btn.active { background: var(--accent); color: #fff; }

/* ---------- 布局 ---------- */
.layout {
  flex: 1 1 auto;
  min-height: calc(100vh - 120px);
  display: flex;
  min-width: 0;
}

.sidebar {
  width: 232px;
  flex: 0 0 232px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 12px 10px 16px;
  display: flex;
  flex-direction: column;
}

.nav-group {
  font-size: 12px;
  color: var(--muted);
  font-weight: 700;
  padding: 14px 10px 6px;
  letter-spacing: 1px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  margin-bottom: 2px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font-size: 13.5px;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background-color 0.12s;
}
.nav-item:hover { background: #f1f3f6; }
.nav-item.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.nav-ic { display: inline-flex; width: 20px; height: 20px; flex: 0 0 auto; }
.nav-ic svg { width: 20px; height: 20px; }

.sidebar-foot {
  margin-top: auto;
  padding: 12px 10px 0;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px dashed var(--border);
}
.sidebar-foot p { white-space: pre-line; }

.main {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px 60px;
  min-width: 0;
}

.tool-panel { max-width: 860px; margin: 0 auto; }

.tool-head { margin-bottom: 18px; }
.tool-head h2 { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.tool-desc { color: var(--muted); font-size: 13px; }

/* ---------- 通用控件 ---------- */
.form-field { margin-bottom: 14px; }
.form-field.wide { max-width: none; }
.field-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
}
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row > .form-field { flex: 1; min-width: 140px; }

.input, .select, textarea.input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font-size: 13.5px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.12s, box-shadow 0.12s;
}
.input:focus, .select:focus, textarea.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(229, 72, 77, 0.12);
}
.input-sm { width: 72px !important; padding: 5px 8px; }
textarea.input { resize: vertical; min-height: 34px; }

.check { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13.5px; }
.check input { accent-color: var(--accent); width: 15px; height: 15px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 0.12s, border-color 0.12s;
}
.btn:hover { background: #f1f3f6; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

.btn-danger { color: var(--danger); border-color: #f3c1bd; }
.btn-danger:hover { background: #fdf0ef; }

.btn-sm { padding: 4px 10px; font-size: 12.5px; border-radius: 6px; }

.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.action-row { margin-top: 18px; }

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 14px;
}

.range-wrap { display: flex; align-items: center; gap: 12px; }
.range { flex: 1; accent-color: var(--accent); }
.range-val { font-size: 13px; color: var(--muted); min-width: 44px; text-align: right; }

.color-input {
  width: 44px;
  height: 34px;
  padding: 2px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--panel);
  cursor: pointer;
}

.crop-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.crop-input { display: flex; flex-direction: column; gap: 6px; }

/* ---------- 文件选择 ---------- */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 26px 18px;
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--panel);
  cursor: pointer;
  margin-bottom: 16px;
  text-align: center;
  transition: border-color 0.12s, background-color 0.12s;
}
.drop-zone:hover, .drop-zone.over { border-color: var(--accent); background: var(--accent-soft); }
.dz-icon { width: 34px; height: 34px; color: var(--muted); }
.dz-icon svg { width: 34px; height: 34px; }
.dz-text { font-size: 13.5px; color: var(--muted); }

.file-list { display: flex; flex-direction: column; gap: 6px; }
.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
}
.fi-order {
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg); border-radius: 6px;
  font-size: 12px; color: var(--muted);
  flex: 0 0 auto;
}
.fi-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.fi-size { color: var(--muted); font-size: 12px; flex: 0 0 auto; }

/* ---------- 结果区 ---------- */
.tool-output { margin-top: 18px; }
.result {
  background: var(--green-soft);
  border: 1px solid #bce5d4;
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.muted { color: var(--muted); font-size: 12.5px; }

/* ---------- 缩略图 ---------- */
.thumb-grid { display: flex; flex-wrap: wrap; gap: 12px; margin: 12px 0; }
.thumb {
  border: 2px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
  position: relative;
  transition: border-color 0.12s;
}
.thumb:hover { border-color: var(--border-strong); }
.thumb.selected { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(229, 72, 77, 0.2); }
.thumb canvas { display: block; }
.thumb-num {
  position: absolute;
  left: 4px; bottom: 4px;
  background: rgba(31, 41, 55, 0.75);
  color: #fff;
  font-size: 10.5px;
  padding: 1px 6px;
  border-radius: 5px;
}

/* ---------- 预览交互 ---------- */
.preview-host { margin: 12px 0; display: flex; justify-content: center; }
.interactive-page { position: relative; display: inline-block; box-shadow: var(--shadow); border-radius: 4px; overflow: hidden; }
.interactive-page canvas { display: block; max-width: 100%; }
.ovl {
  position: absolute;
  border: 2px solid var(--accent);
  background: rgba(229, 72, 77, 0.18);
  pointer-events: none;
}
.ovl-drag { border-color: #1e5eff; background: rgba(30, 94, 255, 0.15); }
.ovl-picked { border-color: var(--green); background: rgba(26, 158, 108, 0.18); }
.ovl-label {
  position: absolute;
  top: -22px; left: 0;
  background: var(--green);
  color: #fff;
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 5px;
  white-space: nowrap;
}

/* ---------- 表单字段列表 ---------- */
.form-list { display: flex; flex-direction: column; gap: 10px; margin: 12px 0; }
.form-item { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); padding: 12px 14px; }
.fi-label { font-size: 13px; font-weight: 600; margin-bottom: 8px; }
.radio-row { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- 标注列表 ---------- */
.annot-list { display: flex; flex-direction: column; gap: 6px; margin: 12px 0; }
.annot-item {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  font-size: 13px;
  cursor: pointer;
}
.annot-item input { margin-top: 4px; accent-color: var(--accent); }
.annot-txt { word-break: break-all; }

/* ---------- 目录 ---------- */
.outline-tree { margin-top: 8px; }
.outline-item {
  padding: 5px 8px;
  font-size: 13px;
  cursor: pointer;
  border-radius: 6px;
  color: var(--text);
}
.outline-item:hover { background: #f1f3f6; }
.outline-title { color: var(--text); }
.outline-title:hover { color: var(--accent); }

/* ---------- 阅读器 ---------- */
.reader { display: flex; flex-direction: column; gap: 12px; }
.reader-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 8px 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
}
.reader-bar .sep { width: 1px; height: 20px; background: var(--border); margin: 0 4px; }
.reader-layout { display: flex; gap: 14px; align-items: flex-start; }
.reader-side { width: 170px; flex: 0 0 170px; max-height: 72vh; overflow-y: auto; }
.reader-sec-title { font-size: 12px; font-weight: 700; color: var(--muted); margin: 8px 0 6px; }
.reader-thumbs { margin-bottom: 16px; }
.reader-thumb {
  margin-bottom: 8px;
  border: 2px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  background: var(--panel);
}
.reader-thumb:hover { border-color: var(--accent); }
.reader-thumb canvas { display: block; max-width: 100%; }
.reader-outline .outline-item { padding-left: 4px; }
.reader-pages { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 18px; padding-bottom: 40px; }
.reader-page { position: relative; box-shadow: var(--shadow); border-radius: 4px; overflow: hidden; background: #fff; }
.reader-page canvas { display: block; }
.text-layer { position: absolute; left: 0; top: 0; overflow: hidden; opacity: 0.2; pointer-events: none; }
.text-layer span {
  position: absolute;
  white-space: pre;
  transform-origin: 0 100%;
  color: transparent;
  background: rgba(0, 0, 0, 0.9);
}

/* ---------- 提示 ---------- */
#toast-box { position: fixed; top: 70px; right: 20px; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-left: 4px solid #1e5eff;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13px;
  box-shadow: 0 4px 14px rgba(16, 24, 40, 0.12);
  opacity: 0;
  transform: translateX(12px);
  transition: opacity 0.25s, transform 0.25s;
  max-width: 360px;
}
.toast.show { opacity: 1; transform: none; }
.toast-success { border-left-color: var(--green); }
.toast-error { border-left-color: var(--danger); }

.alert {
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 12px;
}
.alert-error { background: #fdf0ef; border: 1px solid #f3c1bd; color: var(--danger); }

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--panel);
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
}

.footer-sep { margin: 0 8px; color: var(--border-strong); }
.legal-link { color: var(--muted); text-decoration: none; }
.legal-link:hover { color: var(--accent); text-decoration: underline; }

/* ---------- 隐私政策 / 服务条款页 ---------- */
.legal-body { background: var(--bg); }
.legal-topbar { position: static; }
.legal-wrap {
  flex: 1;
  padding: 28px 20px 60px;
  display: flex;
  justify-content: center;
  min-width: 0;
}
.legal-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 34px 40px 40px;
  max-width: 780px;
  width: 100%;
  line-height: 1.9;
}
.legal-title { font-size: 26px; font-weight: 700; margin-bottom: 6px; }
.legal-update { font-size: 12.5px; color: var(--muted); margin-bottom: 16px; }
.legal-lead { font-size: 14.5px; margin-bottom: 22px; }
.legal-card section { margin-bottom: 24px; }
.legal-card h2 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.legal-card p { font-size: 14px; margin-bottom: 8px; }
.legal-card ul { padding-left: 22px; margin-bottom: 8px; }
.legal-card li { font-size: 14px; margin-bottom: 6px; }
@media (max-width: 640px) {
  .legal-card { padding: 22px 18px 30px; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; flex: none; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 4px; padding: 8px; border-right: none; border-bottom: 1px solid var(--border); max-height: 34vh; overflow-y: auto; }
  .nav-group { display: none; }
  .nav-item { width: auto; padding: 6px 10px; font-size: 13px; }
  .nav-ic { display: none; }
  .sidebar-foot { display: none; }
  .main { padding: 16px 14px 40px; }
  .reader-side { display: none; }
}