/* 多语言表单 · 基础样式（前台填写页与后台管理页共用） */
:root {
  --primary: #4f7cff;
  --primary-dark: #3b63d8;
  --danger: #ef4444;
  --ok: #10b981;
  --text: #1f2937;
  --text-2: #6b7280;
  --border: #e5e7eb;
  --bg: #f3f5f9;
  --card: #ffffff;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(31, 41, 55, .08);
}

* { box-sizing: border-box; }

/* hidden 属性必须优先于组件自身的 display（如 .login-wrap 的 flex），
   否则设置了 hidden 的元素仍会显示（曾导致后台登录后登录页不消失） */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-danger { color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; border-color: var(--danger); color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 13px; border-radius: 6px; }

/* ---------- 表单元素 ---------- */
.input, .select, .textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color .15s;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 124, 255, .12);
}
.input.err, .textarea.err, .select.err { border-color: var(--danger); }
.textarea { resize: vertical; min-height: 88px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 28px;
}

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.topbar .brand {
  font-weight: 700;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.topbar .brand .dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--primary);
}
.topbar .brand .brand-logo {
  height: 26px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
  border-radius: 6px;
}

/* ---------- 语言切换（自定义下拉，带国旗） ---------- */
.lang-select { position: relative; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  outline: none;
}
.lang-btn:hover, .lang-btn:focus { border-color: var(--primary); }
.lang-caret { width: 14px; height: 14px; color: var(--muted, #8a93a6); }
.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 150px;
  padding: 5px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, .14);
  z-index: 80;
}
.lang-item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 7px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  text-align: left;
}
.lang-item:hover { background: var(--bg-2, #f1f4f9); }
.lang-item.active { color: var(--primary); font-weight: 600; }
.lang-item.active .lang-flag { box-shadow: 0 0 0 1.5px var(--primary); }
.lang-flag { width: 21px; height: 15px; border-radius: 3px; object-fit: cover; box-shadow: 0 0 0 1px rgba(15, 23, 42, .12); flex: none; }
.lang-cur-flag { display: inline-flex; }
.lang-cur-flag .lang-flag { width: 18px; height: 13px; }

/* ---------- 消息条 ---------- */
.inline-msg {
  display: none;
  margin-top: 12px;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 13.5px;
}
.inline-msg.show { display: block; }
.inline-msg.err { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(17, 24, 39, .45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-mask[hidden] { display: none; }
.modal {
  background: #fff;
  border-radius: var(--radius);
  width: min(560px, 96vw);
  max-height: 92vh;
  overflow: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .2);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-head h3 { margin: 0; font-size: 16px; }
.modal-close {
  border: 0;
  background: transparent;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  color: var(--text-2);
}
.modal-body { padding: 20px; }
.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

/* ---------- Toast ---------- */
.toast-wrap {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  padding: 9px 18px;
  border-radius: 8px;
  background: #111827;
  color: #fff;
  font-size: 13.5px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .25);
  animation: toast-in .18s ease;
}
.toast.err { background: var(--danger); }
.toast.ok { background: var(--ok); }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 开关 ---------- */
.switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.switch input { display: none; }
.switch i {
  width: 40px; height: 22px;
  border-radius: 999px;
  background: #d1d5db;
  position: relative;
  transition: background .15s;
  flex: none;
}
.switch i::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  transition: left .15s;
}
.switch input:checked + i { background: var(--primary); }
.switch input:checked + i::after { left: 21px; }

/* ---------- 字段网格（后台设置区） ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px 18px; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } .grid-3 { grid-template-columns: 1fr; } }
.field label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 4px; }
.field .req { color: var(--danger); margin-left: 2px; }
/* 开关本身就是 label，需抵消上方 .field label 的块级样式 */
.field label.switch { display: inline-flex; margin-bottom: 0; color: var(--text); }

/* ---------- 前台填写页（fm-*） ---------- */
.fm-label { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 500; color: var(--text); }
.fm-req { color: var(--danger); margin-left: 2px; }
.fm-field { margin-bottom: 18px; }
.fm-empty { color: var(--text-2); font-size: 14px; }
.fm-options { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.fm-option { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; cursor: pointer; }
.fm-option input { accent-color: var(--primary); }
.fm-file { display: flex; flex-direction: column; gap: 6px; }
.fm-file-input { font-size: 13.5px; color: var(--text-2); }
.fm-file-input::file-selector-button {
  margin-right: 10px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}
.fm-file-input::file-selector-button:hover { border-color: var(--primary); color: var(--primary); }
.fm-file-name { font-size: 13.5px; color: var(--ok); word-break: break-all; }
.fm-hidden { display: none !important; }
.fm-hint { font-size: 12.5px; color: var(--text-2); margin-top: 6px; line-height: 1.6; }

/* 评分（星级） */
.fm-rating { display: flex; gap: 4px; align-items: center; }
.fm-star {
  border: 0;
  background: none;
  padding: 0 2px;
  font-family: inherit;
  font-size: 26px;
  line-height: 1;
  color: #d7dde5;
  cursor: pointer;
  transition: color .15s, transform .15s;
}
.fm-star:hover { transform: scale(1.12); }
.fm-star.on { color: #f5a524; }

/* 开关 */
.fm-switch { display: flex; align-items: center; }
.fm-sw-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  background: none;
  padding: 0;
  font-family: inherit;
  font-size: 14px;
  color: var(--text-2);
  cursor: pointer;
}
.fm-sw-btn i {
  width: 40px;
  height: 22px;
  border-radius: 999px;
  background: #cbd5e1;
  position: relative;
  transition: background .18s;
  flex: none;
}
.fm-sw-btn i::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, .3);
  transition: transform .18s;
}
.fm-sw-btn.on i { background: var(--primary); }
.fm-sw-btn.on i::after { transform: translateX(18px); }
.fm-sw-btn.on { color: var(--primary); }

/* 滑块 */
.fm-range { display: flex; align-items: center; gap: 12px; }
.fm-range .input[type="range"] {
  flex: 1;
  padding: 0;
  border: 0;
  background: none;
  height: 22px;
  accent-color: var(--primary);
}
.fm-range-val {
  min-width: 48px;
  text-align: right;
  font-size: 13.5px;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
}

/* 颜色 */
.fm-color { display: flex; align-items: center; gap: 10px; }
.fm-color .input[type="color"] {
  width: 52px;
  height: 36px;
  padding: 3px;
  cursor: pointer;
}
.fm-color-val { font-size: 13.5px; color: var(--text-2); font-variant-numeric: tabular-nums; }
.fm-file-hint { font-size: 12.5px; color: var(--text-2); }
/* ---------- 图形验证码 ---------- */
.fm-captcha { margin-bottom: 18px; }
.fm-captcha-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.fm-captcha-input { width: 170px; }
.fm-captcha-img {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #f8fafc;
  cursor: pointer;
}
.fm-captcha-img:hover { border-color: var(--primary); }
.fm-captcha-img svg { display: block; height: 36px; width: auto; }
html.dark .fm-captcha-img { background: #141d2e; }
/* 文件预览缩略图（用类代替内联边框，暗色模式可覆盖） */
.fm-file-thumb { max-width: 180px; max-height: 120px; border-radius: 8px; display: block; margin-top: 8px; border: 1px solid rgba(0, 0, 0, .08); }
html.dark .fm-file-thumb { border-color: rgba(255, 255, 255, .12); }

/* ------------------------------ Cookie 同意弹窗 ------------------------------ */
.fm-cookie { position: fixed; left: 0; right: 0; bottom: 0; z-index: 9998; display: flex; justify-content: center; padding: 14px; box-sizing: border-box; }
.fm-cookie-modal { align-items: center; top: 0; background: rgba(15, 23, 42, .45); }
.fm-cookie-card { align-items: flex-end; justify-content: flex-end; padding: 16px; }
.fm-cookie-box { width: 100%; max-width: 860px; border: 1px solid; border-radius: 12px; padding: 16px 20px; box-shadow: 0 10px 30px rgba(15, 23, 42, .18); box-sizing: border-box; }
.fm-cookie-modal .fm-cookie-box { max-width: 520px; }
.fm-cookie-card .fm-cookie-box { max-width: 400px; }
.fm-cookie-title { font-size: 15.5px; font-weight: 600; margin-bottom: 6px; }
.fm-cookie-desc { font-size: 13px; line-height: 1.7; margin-bottom: 10px; }
.fm-cookie-link { display: inline-block; font-size: 12.5px; margin-bottom: 10px; }
.fm-cookie-cats { display: flex; gap: 16px; margin-bottom: 10px; font-size: 13px; flex-wrap: wrap; }
.fm-cookie-cat { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.fm-cookie-btns { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }
.fm-cookie-btn { padding: 7px 14px; border-radius: 8px; border: 1px solid; background: transparent; font-size: 13px; cursor: pointer; font-family: inherit; }
.fm-cookie-btn:hover { filter: brightness(1.08); }
.fm-cookie-primary { color: #fff; }
@media (max-width: 560px) {
  .fm-cookie-btns { justify-content: stretch; }
  .fm-cookie-btn { flex: 1; }
}
.fm-head { margin-bottom: 20px; }
/* 表单头图：无容器直接铺满页面宽度，表单容器上移遮挡其底部 1/4 */
#fm-banner-img {
  display: block;
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  margin: 0;
  padding: 0;
  border: 0;
  outline: none;
  box-shadow: none;
  border-radius: 0;
  vertical-align: top;
  line-height: 0;
}
main { position: relative; z-index: 1; }
.fm-title { margin: 0 0 6px; font-size: 20px; }
.fm-desc { margin: 0; color: var(--text-2); font-size: 14px; }
.fm-actions { margin-top: 20px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.fm-tip { font-size: 12.5px; color: var(--text-2); }
.fm-state { text-align: center; padding: 36px 10px; }
.fm-state-icon { font-size: 46px; line-height: 1; color: var(--ok); }
.fm-state-title { margin: 14px 0 6px; }
.fm-state-text { margin: 0; color: var(--text-2); font-size: 14px; }

/* ---------- 暗模式（前台跟随站点设置） ---------- */
html.dark {
  --bg: #0f172a;
  --card: #151d2b;
  --text: #e2e8f0;
  --text-2: #8fa0b5;
  --border: #263349;
}
html.dark body { background: var(--bg); }
html.dark .card { box-shadow: 0 6px 24px rgba(0, 0, 0, .35); }
html.dark .btn { background: #1b2536; border-color: var(--border); color: var(--text); }
html.dark .btn:hover { border-color: var(--primary); color: var(--primary); }
html.dark .btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
html.dark .input, html.dark .select, html.dark .textarea { background: #101827; border-color: var(--border); color: var(--text); }
html.dark .topbar { background: rgba(21, 29, 43, .92); }
html.dark .lang-select { color: var(--text); }
html.dark .lang-btn { background: #1b2536; border-color: var(--border); color: var(--text); }
html.dark .lang-menu { background: #1b2536; border-color: var(--border); }
html.dark .lang-item { color: var(--text); }
html.dark .lang-item:hover { background: #24304a; }
html.dark .fm-file-input::file-selector-button { background: #1b2536; border-color: var(--border); color: var(--text); }
html.dark .inline-msg.err { background: rgba(239, 68, 68, .12); color: #fca5a5; border-color: #7f1d1d; }

/* 分步填写导航 */
.fm-steps-bar { display: flex; align-items: center; justify-content: center; gap: 14px; margin: 6px 0 2px; }
.fm-steps-bar .btn { min-width: 44px; padding: 6px 0; font-size: 18px; line-height: 1; }
.fm-step-info { font-size: 13px; color: var(--muted, #8a93a6); font-weight: 600; }

/* PC 端二维码：悬浮于表单卡片右侧（不遮挡卡片、滚动时始终可见），与卡片右缘间距约 10px */
/* 表单卡片居中且宽 640px：卡片右缘 = 50% + 320px，再加 10px 间距 */
.fm-qr { position: fixed; top: 50%; transform: translateY(-50%); left: calc(50% + 330px); z-index: 60; }
.fm-qr-card { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 10px; background: var(--card, #fff); border: 1px solid var(--border, #e5e9f2); border-radius: 12px; box-shadow: 0 6px 22px rgba(15, 23, 42, .10); }
.fm-qr-card img { display: block; border-radius: 6px; background: #fff; }
.fm-qr-text { font-size: 12px; color: var(--muted, #8a93a6); white-space: nowrap; }
/* 屏幕余量不足以放下二维码时隐藏，避免溢出屏幕 */
@media (max-width: 1000px) { .fm-qr { display: none; } }
html.dark .fm-qr-card { background: #1b2536; border-color: var(--border); }