:root {
  --bg: #0f1115;
  --panel: #171a21;
  --line: #262b36;
  --text: #e6e9ef;
  --muted: #98a2b3;
  --accent: #4f8cff;
  --accent-2: #22c55e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 'Microsoft YaHei', 'PingFang SC', -apple-system, 'Segoe UI', sans-serif;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

header h1 {
  margin: 0 0 4px;
  font-size: 26px;
  letter-spacing: .5px;
}

header .sub {
  margin: 0 0 24px;
  color: var(--muted);
}

main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 860px) {
  main { grid-template-columns: 1fr; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}

.field { margin-bottom: 16px; }

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--muted);
}

textarea, select {
  width: 100%;
  padding: 10px 12px;
  background: #0d1017;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
}

textarea { resize: vertical; }

textarea:focus, select:focus { border-color: var(--accent); }

.hidden { display: none; }

.tabs { display: flex; gap: 8px; }

.tab {
  flex: 1;
  padding: 9px 12px;
  background: #0d1017;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
}

.tab.active {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(79, 140, 255, .12);
}

.hint {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.actions { display: flex; gap: 10px; margin-top: 20px; }

button {
  flex: 1;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  border: 1px solid transparent;
}

.primary { background: var(--accent); color: #fff; }
.primary:hover { filter: brightness(1.08); }
.ghost { background: transparent; border-color: var(--line); color: var(--muted); }
.ghost:hover { color: var(--text); border-color: var(--accent); }

.preview-box {
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: repeating-conic-gradient(#fff 0% 25%, #f2f4f8 0% 50%) 50% / 20px 20px;
  border-radius: 12px;
  padding: 24px;
}

.preview-box img {
  max-width: 100%;
  max-height: 420px;
}

.message {
  min-height: 20px;
  margin: 12px 2px 0;
  font-size: 13px;
  color: var(--muted);
}

.message.error { color: #f87171; }
.message.ok { color: var(--accent-2); }

footer {
  margin-top: 24px;
  display: flex;
  gap: 10px;
  color: #6b7280;
  font-size: 12px;
}

/* ---------------- 批量生成：卡片网格与分页 ---------------- */
.sep { margin-top: 8px; }

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--muted);
}

.pager { display: flex; align-items: center; gap: 8px; }

.pg {
  flex: none;
  padding: 5px 12px;
  background: #0d1017;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  font-size: 13px;
}

.pg:hover:not(:disabled) { color: var(--text); border-color: var(--accent); }
.pg:disabled { opacity: .4; cursor: not-allowed; }

#pageNum { min-width: 46px; text-align: center; color: var(--text); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
  min-height: 260px;
}

.card {
  background: #0d1017;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.thumb {
  height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: repeating-conic-gradient(#fff 0% 25%, #f2f4f8 0% 50%) 50% / 18px 18px;
  border-radius: 8px;
  padding: 10px;
  overflow: hidden;
}

.thumb img { max-width: 100%; max-height: 148px; }

.thumb-error {
  color: #f87171;
  font-size: 12px;
  text-align: center;
}

.meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  min-height: 18px;
}

.meta .idx { color: var(--accent); flex: none; }

.meta .txt {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dl {
  flex: none;
  padding: 7px 10px;
  background: rgba(79, 140, 255, .12);
  border: 1px solid var(--accent);
  color: var(--text);
  border-radius: 6px;
  font-size: 13px;
}

.dl:hover { background: rgba(79, 140, 255, .25); }

/* ---------------- v3：铺满布局 + 大尺寸条码 ---------------- */
.wrap {
  max-width: 1680px;
  padding: 24px 28px 48px;
}

main {
  grid-template-columns: 420px minmax(0, 1fr);
  gap: 24px;
}

.grid {
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.thumb {
  height: 250px;
  padding: 14px;
}

.thumb img {
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  cursor: zoom-in;
}

.thumb img:hover { filter: contrast(1.05); }

textarea { font-size: 15px; line-height: 1.7; }

.meta { font-size: 13px; }

@media (max-width: 1100px) {
  main { grid-template-columns: 1fr; }
}

/* ---------------- v4：条形码不压字 + 按类型自适应高度 ---------------- */
.grid-qr .thumb { height: 230px; }
.grid-bc .thumb { height: 170px; }

.grid-bc .thumb img { max-height: 140px; }

.grid-bc .card { gap: 8px; }

.grid-bc .meta { min-height: 16px; }

/* ---------------- v5：登录 / 注册 / 用户区 ---------------- */
.wrap.auth {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-panel {
  width: 360px;
  max-width: 92vw;
  margin: 0 auto;
}

.auth-panel h1 { font-size: 22px; }
.auth-panel .sub { margin-bottom: 18px; }
.auth-panel form { margin-top: 8px; }
.auth-panel .field input {
  width: 100%;
  padding: 10px 12px;
  background: #0d1017;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}
.auth-panel .field input:focus { border-color: var(--accent); outline: none; }
.auth-panel .primary { width: 100%; margin-top: 14px; }
.auth-panel .alt { margin-top: 16px; text-align: center; font-size: 13px; color: var(--muted); }
.auth-panel .alt a { color: var(--accent); }
.form-error {
  background: rgba(248, 113, 113, .12);
  border: 1px solid #f87171;
  color: #fca5a5;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 12px;
}

.hd {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.hd-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
  font-size: 14px;
}

.hd-right .uname { color: var(--accent); }
.hd-right .logout {
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 12px;
  text-decoration: none;
}
.hd-right .logout:hover { color: var(--text); border-color: var(--accent); }

/* ---------------- v5b：游客态（可选登录） ---------------- */
.hd-right .guest {
  color: var(--muted);
  font-size: 14px;
}
.hd-right .login-link {
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 12px;
  text-decoration: none;
  font-size: 13px;
}
.hd-right .login-link:hover { border-color: var(--accent); color: var(--text); }

/* ---------------- v7：首页紧凑布局（结果紧跟输入框，选项折叠） ---------------- */
.home-main { grid-template-columns: 1fr; gap: 16px; }
.home-main > .panel:first-child { padding: 18px; }

.page-head { flex-wrap: wrap; }
.auto-hint { color: var(--accent-2); font-size: 12px; }
.meta .txt { flex: 1; min-width: 0; }
.kind-tag {
  flex: none; font-size: 11px; color: var(--muted);
  border: 1px solid var(--line); border-radius: 4px; padding: 0 6px;
}
.home-main .grid { margin-top: 4px; }

/* 高级设置：默认收起，展开后紧凑多列，不占主界面 */
.compact-panel { padding: 0; overflow: hidden; }
.more-toggle {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  background: transparent; border: 0; color: var(--muted);
  padding: 12px 18px; font-size: 13px; cursor: pointer; text-align: left;
}
.more-toggle:hover { color: var(--text); background: rgba(255, 255, 255, .02); }
#moreBox { padding: 0 18px 16px; border-top: 1px solid var(--line); }
.opt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0 16px; margin-top: 14px;
}
.opt-grid .field { margin-bottom: 12px; }
.opt-grid .field label { font-size: 12px; margin-bottom: 4px; }
.opt-grid select, .opt-grid input { font-size: 14px; padding: 8px 10px; }

/* ---------------- v6：手机端适配（<= 640px） ---------------- */
@media (max-width: 640px) {
  .wrap { padding: 14px 12px 28px; }
  header h1 { font-size: 20px; letter-spacing: 0; }
  header .sub { margin-bottom: 14px; font-size: 13px; line-height: 1.5; }

  /* 头部链接多，允许换行而不是挤成一行 */
  .hd { flex-wrap: wrap; gap: 10px; }
  .hd-right { flex-wrap: wrap; gap: 8px; }
  header.hd > a.login-link { margin-left: 0 !important; }

  main { grid-template-columns: 1fr; gap: 14px; }
  .panel { padding: 14px; border-radius: 10px; }

  /* iOS Safari 对 <16px 的输入控件会自动缩放整个页面，统一提到 16px */
  textarea, select, input { font-size: 16px; }
  /* 页面内联 <style> 里写死了 14px，用更高特异性覆盖，否则手机点输入框会放大 */
  body .auth-panel .field input,
  body .modal .field input,
  body .modal .field textarea,
  body .modal .field select { font-size: 16px; }
  button { font-size: 15px; }
  textarea { min-height: 110px; }

  /* 触摸目标放大到 40px 以上 */
  button, .tab, .pg, .dl, .login-link { min-height: 40px; }
  .pg { padding: 8px 12px; }
  .dl { width: 100%; padding: 10px; }

  /* 容易横向溢出的行统一改为换行 */
  .actions { flex-wrap: wrap; }
  .actions button { flex: 1 1 100%; }
  .page-head { flex-wrap: wrap; gap: 8px; }
  .pager { flex-wrap: wrap; }
  #mainBox .row, .modal .row { flex-wrap: wrap; }

  /* 二维码两列、条形码单列（条码列太窄会扫不出） */
  .grid { gap: 12px; }
  .grid.grid-qr { grid-template-columns: repeat(2, 1fr); }
  .grid.grid-bc { grid-template-columns: 1fr; }
  .grid-qr .thumb, .grid-bc .thumb { height: 150px; padding: 8px; }
  .grid-bc .thumb img, .grid-qr .thumb img { max-height: 128px; }
  .card { padding: 10px; gap: 8px; }
  .meta { font-size: 12px; }

  /* 弹窗贴边、登录表单占满 */
  .overlay { padding: 12px 8px; }
  .modal { padding: 14px; border-radius: 10px; }
  .auth-panel { width: 100%; max-width: 100%; }
  .auth-panel h1 { font-size: 20px; }
  #captchaImg { height: 48px; max-width: 60%; }

  footer { flex-wrap: wrap; gap: 6px; }
  .preview-box { min-height: 200px; padding: 12px; }

  /* 首页紧凑布局在手机上的细化 */
  .home-main > .panel:first-child { padding: 14px; }
  .more-toggle { padding: 12px 14px; }
  #moreBox { padding: 0 14px 14px; }
  .opt-grid { grid-template-columns: 1fr; gap: 0; }
  /* 折叠区的基础样式写了 14px，这里必须用同等特异性覆盖，否则 iOS 会缩放 */
  .opt-grid select, .opt-grid input { font-size: 16px; }
  .auto-hint { width: 100%; }
  .kind-tag { display: none; }
}