/* 证件水印卫士 —— 工具页样式（单文件、无依赖、移动优先） */

:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --ink: #1f2937;
  --ink-2: #6b7280;
  --line: #e5e7eb;
  --brand: #d97706;
  --brand-dark: #b45309;
  --danger: #dc2626;
  --warn-bg: #fef3c7;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 4px 14px rgba(0, 0, 0, .05);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

.container { max-width: 860px; margin: 0 auto; padding: 0 16px; }

/* ---------- Header ---------- */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 6px; }
.brand-mark { font-size: 20px; }
.nav { display: flex; align-items: center; gap: 14px; }
.nav a { color: var(--ink-2); text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--brand); }
.nav select {
  border: 1px solid var(--line); border-radius: 8px; padding: 4px 8px;
  background: #fff; font-size: 13px; color: var(--ink-2); cursor: pointer;
}

/* ---------- Hero ---------- */
.hero { text-align: center; padding: 36px 0 20px; }
.hero h1 { font-size: 26px; margin: 0 0 8px; }
.hero p { color: var(--ink-2); margin: 0 0 14px; }
.badges { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; padding: 0; margin: 0; }
.badges li {
  background: #fef3c7; color: #92400e; font-size: 13px;
  padding: 4px 12px; border-radius: 999px;
}

/* ---------- Card ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}

/* ---------- 上传区 ---------- */
.dropzone {
  border: 2px dashed #fcd34d;
  border-radius: var(--radius);
  background: #f8fbff;
  text-align: center;
  padding: 28px 16px;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.dropzone.drag-over { border-color: var(--brand); background: #fef3c7; }
.dropzone.warn { border-color: var(--danger); background: var(--warn-bg); animation: shake .3s; }
@keyframes shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }
.dz-icon { font-size: 34px; }
.dz-title { font-weight: 600; margin: 6px 0 2px; }
.dz-hint { color: var(--ink-2); font-size: 13px; margin: 0; }

/* ---------- 缩略图 ---------- */
.thumbs { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.thumb { position: relative; width: 72px; height: 72px; }
.thumb img {
  width: 72px; height: 72px; object-fit: cover;
  border-radius: 8px; border: 1px solid var(--line); display: block;
}
.thumb-del {
  position: absolute; top: -7px; right: -7px;
  width: 20px; height: 20px; border-radius: 50%;
  border: none; background: var(--danger); color: #fff;
  font-size: 13px; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.thumb-rot {
  position: absolute; bottom: -7px; left: -7px;
  width: 20px; height: 20px; border-radius: 50%;
  border: none; background: var(--brand); color: #fff;
  font-size: 12px; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.thumb-rot:hover { background: var(--brand-dark); }
.thumb img { transition: transform .15s; }

/* ---------- 表单 ---------- */
.form { margin-top: 18px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 640px) { .row2 { grid-template-columns: 1fr; } }
.field { margin-bottom: 14px; min-width: 0; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field input[type="text"], .field input[type="date"], .field input[type="number"],
.field select, .field textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}
.field textarea { resize: vertical; min-height: 64px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid #fde68a; border-color: var(--brand);
}
.field-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 4px; }
.hint { font-size: 12px; color: var(--ink-2); }
.link-btn {
  border: none; background: none; color: var(--brand);
  font-size: 12px; cursor: pointer; padding: 0;
}
.link-btn:hover { text-decoration: underline; }
.mt-4 { margin-top: 8px; }

/* ---------- 高级设置 ---------- */
.adv { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin-bottom: 16px; }
.adv summary { cursor: pointer; font-weight: 600; font-size: 14px; color: var(--ink-2); }
.adv[open] summary { margin-bottom: 10px; }

.swatches { display: flex; align-items: center; gap: 8px; }
.swatch {
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid var(--line); cursor: pointer; padding: 0;
  transition: transform .12s;
}
.swatch.active { border-color: var(--brand); transform: scale(1.12); box-shadow: 0 0 0 2px #fde68a; }
#colorPicker { width: 34px; height: 30px; border: 1px solid var(--line); border-radius: 8px; background: #fff; cursor: pointer; padding: 2px; }

input[type="range"] { width: 100%; accent-color: var(--brand); }

/* ---------- 按钮 ---------- */
.actions { display: flex; gap: 12px; }
.btn {
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s, opacity .15s;
}
.btn.primary { background: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-dark); }
.btn.ghost { background: #fff; color: var(--ink-2); border-color: var(--line); }
.btn.ghost:hover { color: var(--brand); border-color: var(--brand); }
.btn.lg { padding: 12px 26px; font-size: 15px; flex: 1; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ---------- 结果 ---------- */
.results-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.results-head h2 { margin: 0; font-size: 18px; }
.result-list { display: grid; gap: 16px; }
.result-card { border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.result-card img { width: 100%; height: auto; max-height: 460px; object-fit: contain; border-radius: 6px; background: #fafafa; }
.result-actions { display: flex; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.name-input {
  flex: 1; min-width: 160px;
  padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 13px;
}

/* ---------- 步骤 / FAQ ---------- */
.prose h2 { font-size: 20px; margin: 4px 0 14px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 640px) { .steps { grid-template-columns: 1fr; } }
.step { background: #fafbfc; border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.step h3 { font-size: 15px; margin: 0 0 6px; }
.step p { font-size: 13px; color: var(--ink-2); margin: 0; }
.faq-item { border-bottom: 1px solid var(--line); padding: 10px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-item summary { font-weight: 600; cursor: pointer; font-size: 15px; }
.faq-item p { color: var(--ink-2); font-size: 14px; margin: 8px 0 2px; }

/* ---------- Footer ---------- */
/* 广告位预埋：空容器不占版面；接入广告后（:not(:empty)）再显示 */
.ad-slot { margin: 14px auto; text-align: center; max-width: 728px; }
.ad-slot:empty { display: none; margin: 0; }
.ad-slot:not(:empty) { min-height: 90px; }
.site-footer { border-top: 1px solid var(--line); background: var(--card); margin-top: 28px; padding: 18px 0 26px; }
.site-footer p { margin: 4px 0; font-size: 13px; color: var(--ink-2); text-align: center; }
.site-footer a { color: var(--ink-2); }

/* ---------- Toast ---------- */
.toast-root {
  position: fixed; top: 68px; left: 50%; transform: translateX(-50%);
  z-index: 100; display: flex; flex-direction: column; gap: 8px; align-items: center;
  pointer-events: none;
}
.toast {
  background: #111827; color: #fff; font-size: 14px;
  padding: 9px 18px; border-radius: 8px;
  opacity: 0; transform: translateY(-6px); transition: all .25s;
  max-width: 86vw;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.warn { background: #b45309; }
.toast.error { background: var(--danger); }

/* ---------- 项目 4 专属：步骤标题 / 预设行 / Logo / 复选行 / 进度条 / 结果元信息 ---------- */
.step-title { font-size: 16px; margin: 0 0 12px; color: #92400e; }
.preset-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.preset-row select { flex: 1; min-width: 160px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; background: #fff; }
.preset-row input[type="text"] { width: 110px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; }
.logo-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.logo-preview { height: 44px; width: auto; max-width: 130px; object-fit: contain; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.check-row { display: flex; align-items: center; gap: 8px; font-weight: 400; cursor: pointer; margin-bottom: 8px; }
.check-row input[type="checkbox"] { accent-color: var(--brand); width: 16px; height: 16px; flex-shrink: 0; }
.progress-wrap { margin-top: 14px; display: flex; align-items: center; gap: 10px; }
.progress-bar { flex: 1; height: 8px; border-radius: 4px; background: #fef3c7; overflow: hidden; }
.progress-bar > div { height: 100%; width: 0; background: var(--brand); transition: width .2s; }
.result-meta { display: flex; align-items: center; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.result-name { font-size: 13px; font-weight: 600; color: var(--ink); max-width: 60%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.thumbs { max-height: 260px; overflow-y: auto; }
.preset-summary {
  font-size: 12px; color: #92400e; background: #fef3c7;
  border: 1px solid #fde68a; border-radius: 8px;
  padding: 6px 10px; margin: -8px 0 14px; line-height: 1.5;
}