/*!
 * GTAmap · 反馈页样式 feedback.css
 * 自包含：即使 assets/css/style.css 不存在，本页也能正常显示。
 * 若站点 style.css 定义了 --gtamap-accent / --primary / --brand 等变量，会自动沿用其主色。
 */

/* ===================== 变量 ===================== */
:root {
  --fb-accent: var(--gtamap-accent, var(--primary, var(--brand, #1a56db)));
  --fb-accent-dark: #1746b0;
  --fb-accent-soft: rgba(26, 86, 219, .08);
  --fb-bg: #f5f7fa;
  --fb-card: #ffffff;
  --fb-card-soft: #f9fafc;
  --fb-text: #1b2430;
  --fb-muted: #5b6876;
  --fb-faint: #8a95a3;
  --fb-border: #dfe4ec;
  --fb-border-strong: #c6cedb;
  --fb-ok: #067647;
  --fb-ok-soft: #e9f7f0;
  --fb-warn: #b54708;
  --fb-warn-soft: #fff6e8;
  --fb-bad: #b42318;
  --fb-bad-soft: #fdeceb;
  --fb-radius: 12px;
  --fb-radius-sm: 8px;
  --fb-shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px -12px rgba(16, 24, 40, .18);
  --fb-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
             "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
             "Noto Sans CJK SC", Roboto, Helvetica, Arial, sans-serif;
  --fb-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fb-accent-dark: #86a9ff;
    --fb-accent-soft: rgba(120, 160, 255, .12);
    --fb-bg: #0f1319;
    --fb-card: #171c24;
    --fb-card-soft: #1c222c;
    --fb-text: #e7ecf3;
    --fb-muted: #a6b1c0;
    --fb-faint: #7c8797;
    --fb-border: #2a313c;
    --fb-border-strong: #3a434f;
    --fb-ok: #63d3a0;
    --fb-ok-soft: rgba(60, 190, 130, .12);
    --fb-warn: #f0b26b;
    --fb-warn-soft: rgba(240, 178, 107, .12);
    --fb-bad: #ff8b82;
    --fb-bad-soft: rgba(255, 139, 130, .12);
    --fb-shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 28px -14px rgba(0, 0, 0, .7);
    --fb-accent: var(--gtamap-accent, var(--primary, #6f9bff));
  }
}

/* ===================== 基础 ===================== */
body.fb-page-body {
  margin: 0;
  background: var(--fb-bg);
  color: var(--fb-text);
  font-family: var(--fb-font);
  font-size: 15px;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

.fb-wrap {
  width: 100%;
  max-width: 940px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.fb-main { padding: 32px 0 56px; }

a { color: var(--fb-accent); }

code {
  font-family: var(--fb-mono);
  font-size: .92em;
  background: var(--fb-accent-soft);
  padding: 1px 5px;
  border-radius: 4px;
}

.fb-visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.fb-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--fb-accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 var(--fb-radius-sm) 0;
  text-decoration: none;
}
.fb-skip:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--fb-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===================== 页头 / 页脚 ===================== */
.fb-header {
  background: var(--fb-card);
  border-bottom: 1px solid var(--fb-border);
  position: sticky;
  top: 0;
  z-index: 30;
}
.fb-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 62px;
  flex-wrap: wrap;
}
.fb-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--fb-text);
  font-weight: 700;
}
.fb-brand__mark {
  display: inline-grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--fb-accent);
  color: #fff;
  font-size: 12px;
  letter-spacing: .5px;
}
.fb-brand__text { display: flex; flex-direction: column; line-height: 1.2; font-size: 16px; }
.fb-brand__text small { font-weight: 400; font-size: 11.5px; color: var(--fb-faint); }

.fb-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.fb-nav a {
  display: inline-block;
  padding: 6px 11px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--fb-muted);
  font-size: 14px;
}
.fb-nav a:hover { background: var(--fb-accent-soft); color: var(--fb-accent); }
.fb-nav a.is-current { background: var(--fb-accent-soft); color: var(--fb-accent); font-weight: 600; }

.fb-footer {
  border-top: 1px solid var(--fb-border);
  padding: 22px 0 34px;
  color: var(--fb-faint);
  font-size: 13.5px;
}
.fb-footer__inner { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.fb-footer p { margin: 0; }

/* ===================== 标题区 ===================== */
.fb-intro { margin-bottom: 22px; }
.fb-intro h1 { font-size: 27px; line-height: 1.3; margin: 0 0 10px; letter-spacing: -.2px; }
.fb-intro__lead { margin: 0 0 14px; color: var(--fb-muted); font-size: 15.5px; }
.fb-tips {
  margin: 0;
  padding: 14px 18px 14px 34px;
  background: var(--fb-card);
  border: 1px solid var(--fb-border);
  border-left: 3px solid var(--fb-accent);
  border-radius: var(--fb-radius-sm);
  color: var(--fb-muted);
  font-size: 14px;
}
.fb-tips li + li { margin-top: 5px; }
.fb-tips b { color: var(--fb-text); }

/* ===================== 表单容器 ===================== */
.fb-form {
  background: var(--fb-card);
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius);
  box-shadow: var(--fb-shadow);
  padding: 26px 26px 22px;
}

.fb-fieldset {
  border: 0;
  margin: 0 0 26px;
  padding: 0;
}
.fb-fieldset--anti {
  background: var(--fb-card-soft);
  border: 1px dashed var(--fb-border-strong);
  border-radius: var(--fb-radius-sm);
  padding: 14px 16px 10px;
}

.fb-legend {
  font-weight: 650;
  font-size: 15.5px;
  padding: 0;
  margin-bottom: 4px;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
}
.fb-req { color: var(--fb-bad); font-weight: 700; }
.fb-optional {
  font-weight: 400;
  font-size: 12.5px;
  color: var(--fb-faint);
  background: var(--fb-card-soft);
  border: 1px solid var(--fb-border);
  border-radius: 999px;
  padding: 1px 9px;
}

.fb-field { margin-bottom: 20px; }
.fb-label { display: block; font-weight: 600; margin-bottom: 5px; font-size: 14.5px; }
.fb-hint { margin: 0 0 7px; color: var(--fb-muted); font-size: 13px; line-height: 1.65; }
.fb-hint--submit { margin-top: 10px; color: var(--fb-faint); }
.fb-hint code { font-size: 12px; }

.fb-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; align-items: start; }
.fb-grid__row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; align-items: start; }

/* ===================== 输入控件 ===================== */
.fb-input {
  display: block;
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border: 1px solid var(--fb-border-strong);
  border-radius: var(--fb-radius-sm);
  background: var(--fb-card);
  color: var(--fb-text);
  font-family: inherit;
  font-size: 14.5px;
  line-height: 1.55;
  transition: border-color .15s, box-shadow .15s;
}
.fb-input::placeholder { color: var(--fb-faint); }
.fb-input:hover { border-color: var(--fb-muted); }
.fb-input:focus {
  outline: none;
  border-color: var(--fb-accent);
  box-shadow: 0 0 0 3px var(--fb-accent-soft);
}
.fb-input--short { width: 110px; display: inline-block; }
.fb-textarea { resize: vertical; min-height: 150px; font-size: 14.5px; }
select.fb-input { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--fb-muted) 50%), linear-gradient(135deg, var(--fb-muted) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 34px; }

.fb-input.is-invalid,
.fb-input.is-invalid:hover {
  border-color: var(--fb-bad);
  box-shadow: 0 0 0 3px var(--fb-bad-soft);
}

/* 计数器 / 错误 / 匹配提示 */
.fb-counter { margin: 6px 0 0; font-size: 12.5px; color: var(--fb-faint); }
.fb-counter.is-short { color: var(--fb-warn); }
.fb-counter.is-ok { color: var(--fb-ok); }
.fb-error {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--fb-bad);
  font-weight: 500;
}
.fb-match { margin: 6px 0 0; font-size: 12.5px; color: var(--fb-faint); min-height: 1em; }
.fb-match--ok { color: var(--fb-ok); }
.fb-match--warn { color: var(--fb-warn); }

/* ===================== 单选卡片 ===================== */
.fb-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.fb-choice { position: relative; }
.fb-choice input {
  position: absolute;
  top: 15px; left: 14px;
  width: 15px; height: 15px;
  margin: 0;
  accent-color: var(--fb-accent);
}
.fb-choice label {
  display: block;
  padding: 11px 14px 11px 38px;
  border: 1px solid var(--fb-border-strong);
  border-radius: var(--fb-radius-sm);
  cursor: pointer;
  background: var(--fb-card);
  transition: border-color .15s, background .15s, box-shadow .15s;
}
.fb-choice label:hover { border-color: var(--fb-accent); background: var(--fb-accent-soft); }
.fb-choice label > b { display: block; font-size: 14.5px; font-weight: 600; }
.fb-choice label > span { display: block; font-size: 12.5px; color: var(--fb-muted); margin-top: 1px; }
.fb-choice input:checked + label {
  border-color: var(--fb-accent);
  background: var(--fb-accent-soft);
  box-shadow: inset 0 0 0 1px var(--fb-accent);
}
.fb-choice input:focus-visible + label { outline: 2px solid var(--fb-accent); outline-offset: 2px; }

/* ===================== 国家搜索下拉 ===================== */
.fb-combobox { position: relative; }
.fb-combobox__menu {
  position: absolute;
  z-index: 25;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  margin: 0;
  padding: 4px;
  list-style: none;
  max-height: 272px;
  overflow-y: auto;
  background: var(--fb-card);
  border: 1px solid var(--fb-border-strong);
  border-radius: var(--fb-radius-sm);
  box-shadow: var(--fb-shadow);
}
.fb-combobox__opt {
  display: grid;
  grid-template-columns: 54px 1fr auto;
  gap: 8px;
  align-items: baseline;
  padding: 7px 9px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13.5px;
}
.fb-combobox__opt:hover,
.fb-combobox__opt.is-active { background: var(--fb-accent-soft); }
.fb-combobox__iso {
  font-family: var(--fb-mono);
  font-size: 12px;
  color: var(--fb-accent);
  font-weight: 600;
}
.fb-combobox__zh { font-weight: 500; }
.fb-combobox__en { color: var(--fb-faint); font-size: 12px; text-align: right; }

/* ===================== 反垃圾 ===================== */
.fb-captcha { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.fb-captcha .fb-label { margin: 0; font-size: 15px; font-family: var(--fb-mono); }
.fb-captcha .fb-hint { flex-basis: 100%; margin: 2px 0 0; }

.fb-honeypot {
  position: absolute !important;
  left: -9999px !important;
  top: auto;
  width: 1px; height: 1px;
  overflow: hidden;
  opacity: 0;
}

/* ===================== 复选框 / 同意 ===================== */
.fb-consent { margin-top: 4px; }
.fb-check { display: flex; gap: 10px; align-items: flex-start; }
.fb-check input { margin: 4px 0 0; width: 16px; height: 16px; flex: 0 0 auto; accent-color: var(--fb-accent); }
.fb-check label { font-size: 13.5px; color: var(--fb-muted); line-height: 1.65; }

/* ===================== 按钮 ===================== */
.fb-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.fb-actions__mode { font-size: 12.5px; color: var(--fb-faint); }

.fb-btn {
  display: inline-block;
  padding: 9px 16px;
  border: 1px solid var(--fb-border-strong);
  border-radius: var(--fb-radius-sm);
  background: var(--fb-card);
  color: var(--fb-text);
  font: inherit;
  font-size: 14px;
  font-weight: 550;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, transform .06s;
}
.fb-btn:hover { border-color: var(--fb-accent); color: var(--fb-accent); background: var(--fb-accent-soft); }
.fb-btn:active { transform: translateY(1px); }
.fb-btn[disabled] { opacity: .6; cursor: progress; }

.fb-btn--primary {
  background: var(--fb-accent);
  border-color: var(--fb-accent);
  color: #fff;
}
.fb-btn--primary:hover { background: var(--fb-accent-dark); border-color: var(--fb-accent-dark); color: #fff; }
.fb-btn--lg { padding: 12px 26px; font-size: 15.5px; }
.fb-btn--sm { padding: 5px 11px; font-size: 12.5px; border-radius: 6px; font-weight: 500; }
.fb-btn--danger { color: var(--fb-bad); border-color: var(--fb-border-strong); }
.fb-btn--danger:hover { border-color: var(--fb-bad); color: var(--fb-bad); background: var(--fb-bad-soft); }
.fb-btn--link {
  border: 0;
  background: none;
  padding: 4px 2px;
  color: var(--fb-accent);
  text-decoration: underline;
  font-size: 13px;
}
.fb-btn--link:hover { background: none; }

/* ===================== 错误汇总 / 草稿提示 ===================== */
.fb-error-summary {
  border: 1px solid var(--fb-bad);
  background: var(--fb-bad-soft);
  border-radius: var(--fb-radius-sm);
  padding: 12px 16px;
  margin-bottom: 22px;
}
.fb-error-summary__title { margin: 0 0 6px; font-size: 14.5px; color: var(--fb-bad); }
.fb-error-summary__list { margin: 0; padding-left: 20px; font-size: 13.5px; }
.fb-error-summary__list a { color: var(--fb-bad); }

.fb-draft-note {
  margin: 0 0 20px;
  padding: 10px 14px;
  background: var(--fb-accent-soft);
  border-radius: var(--fb-radius-sm);
  font-size: 13.5px;
  color: var(--fb-muted);
}

/* ===================== 结果面板 ===================== */
.fb-result {
  border: 1px solid var(--fb-border);
  border-left: 4px solid var(--fb-accent);
  border-radius: var(--fb-radius);
  background: var(--fb-card);
  box-shadow: var(--fb-shadow);
  padding: 18px 20px;
  margin-bottom: 22px;
}
.fb-result--success { border-left-color: var(--fb-ok); background: linear-gradient(0deg, var(--fb-ok-soft), var(--fb-ok-soft)), var(--fb-card); }
.fb-result--warn { border-left-color: var(--fb-warn); background: linear-gradient(0deg, var(--fb-warn-soft), var(--fb-warn-soft)), var(--fb-card); }
.fb-result--error { border-left-color: var(--fb-bad); background: linear-gradient(0deg, var(--fb-bad-soft), var(--fb-bad-soft)), var(--fb-card); }

.fb-result__title { margin: 0 0 8px; font-size: 18px; }
.fb-result--success .fb-result__title { color: var(--fb-ok); }
.fb-result--warn .fb-result__title { color: var(--fb-warn); }
.fb-result--error .fb-result__title { color: var(--fb-bad); }
.fb-result__text { margin: 0 0 14px; font-size: 14px; color: var(--fb-text); }
.fb-result__actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.fb-result__details { margin-top: 12px; font-size: 13.5px; }
.fb-result__details summary { cursor: pointer; color: var(--fb-muted); }
.fb-result__details summary:hover { color: var(--fb-accent); }

.fb-clipboard {
  display: block;
  width: 100%;
  box-sizing: border-box;
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid var(--fb-border-strong);
  border-radius: var(--fb-radius-sm);
  background: var(--fb-card-soft);
  color: var(--fb-text);
  font-family: var(--fb-mono);
  font-size: 12.5px;
  line-height: 1.6;
  resize: vertical;
}

/* ===================== 历史记录 ===================== */
.fb-history {
  margin-top: 26px;
  background: var(--fb-card);
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius);
  box-shadow: var(--fb-shadow);
  overflow: hidden;
}
.fb-history > summary {
  cursor: pointer;
  padding: 15px 20px;
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 9px;
  list-style: none;
}
.fb-history > summary::-webkit-details-marker { display: none; }
.fb-history > summary::before {
  content: "▸";
  color: var(--fb-accent);
  transition: transform .15s;
  display: inline-block;
}
.fb-history[open] > summary::before { transform: rotate(90deg); }
.fb-history > summary:hover { background: var(--fb-accent-soft); }

.fb-badge {
  display: inline-block;
  min-width: 20px;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--fb-accent-soft);
  color: var(--fb-accent);
  font-size: 12px;
  font-weight: 600;
  text-align: center;
}

.fb-history__body { padding: 0 20px 20px; border-top: 1px solid var(--fb-border); }
.fb-history__toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0 16px; }
.fb-history__list { list-style: none; margin: 0; padding: 0; }

.fb-hist {
  border: 1px solid var(--fb-border);
  border-radius: var(--fb-radius-sm);
  padding: 12px 14px;
  margin-bottom: 10px;
  background: var(--fb-card-soft);
}
.fb-hist__head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 5px; }
.fb-hist__time { font-size: 12.5px; color: var(--fb-faint); font-family: var(--fb-mono); }
.fb-hist__title { font-weight: 600; font-size: 14px; }
.fb-hist__desc { margin: 4px 0 0; font-size: 13.5px; color: var(--fb-muted); }
.fb-hist__err { margin: 5px 0 0; font-size: 12.5px; color: var(--fb-bad); }
.fb-hist__acts { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

.fb-chip {
  display: inline-block;
  padding: 1px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--fb-accent-soft);
  color: var(--fb-accent);
  white-space: nowrap;
}
.fb-chip--ok { background: var(--fb-ok-soft); color: var(--fb-ok); }
.fb-chip--bad { background: var(--fb-bad-soft); color: var(--fb-bad); }
.fb-chip--busy { background: var(--fb-warn-soft); color: var(--fb-warn); }

.fb-empty { color: var(--fb-faint); font-size: 13.5px; text-align: center; padding: 10px 0 4px; }

/* ===================== 提示条 / Toast ===================== */
.fb-alert {
  border-radius: var(--fb-radius-sm);
  padding: 12px 16px;
  font-size: 13.5px;
  border: 1px solid var(--fb-border-strong);
  background: var(--fb-card-soft);
}
.fb-alert--warn { border-color: var(--fb-warn); background: var(--fb-warn-soft); }
.fb-alert p { margin: 0 0 6px; }
.fb-alert ul { margin: 0; padding-left: 20px; }

.fb-toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 14px);
  z-index: 90;
  max-width: min(92vw, 460px);
  padding: 10px 18px;
  border-radius: 999px;
  background: #1b2430;
  color: #fff;
  font-size: 13.5px;
  box-shadow: 0 8px 26px -8px rgba(0, 0, 0, .5);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
}
.fb-toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ===================== 响应式 ===================== */
@media (max-width: 760px) {
  .fb-form { padding: 20px 16px 18px; }
  .fb-grid, .fb-grid__row, .fb-choices { grid-template-columns: 1fr; }
  .fb-intro h1 { font-size: 22px; }
  .fb-header__inner { min-height: 0; padding-top: 10px; padding-bottom: 10px; }
  .fb-nav { width: 100%; }
  .fb-nav a { padding: 5px 9px; font-size: 13.5px; }
  .fb-actions { align-items: stretch; }
  .fb-actions .fb-btn--lg { width: 100%; }
  .fb-combobox__opt { grid-template-columns: 46px 1fr; }
  .fb-combobox__en { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}

@media print {
  .fb-header, .fb-footer, .fb-history, .fb-actions, .fb-result__actions, .fb-toast { display: none !important; }
  body.fb-page-body { background: #fff; }
  .fb-form { box-shadow: none; }
}