/* 匿名提问箱 · 样式表
   移动端优先，无外部字体 / 无 CDN 依赖 */

:root {
  --bg: #f4f5fb;
  --surface: #ffffff;
  --surface-2: #fafbff;
  --text: #171a24;
  --text-soft: #4a5065;
  --muted: #838aa3;
  --line: #e6e8f2;
  --line-strong: #d7dae8;
  --primary: #5a5cf0;
  --primary-soft: #eeeffe;
  --primary-ink: #4348d8;
  --success: #12a06a;
  --success-soft: #e6f7f0;
  --warn: #c2790a;
  --warn-soft: #fdf3e2;
  --danger: #dc3b45;
  --danger-soft: #fdecec;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(23, 26, 36, .04), 0 8px 24px -12px rgba(23, 26, 36, .16);
  --shadow-lg: 0 2px 4px rgba(23, 26, 36, .05), 0 24px 48px -20px rgba(23, 26, 36, .28);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1017;
    --surface: #171a24;
    --surface-2: #1c202c;
    --text: #eceefa;
    --text-soft: #b3b9d0;
    --muted: #7d84a0;
    --line: #262b3a;
    --line-strong: #333A4D;
    --primary: #7b7dff;
    --primary-soft: #21243a;
    --primary-ink: #a3a5ff;
    --success: #35c98d;
    --success-soft: #12291f;
    --warn: #e0a33f;
    --warn-soft: #2b2418;
    --danger: #ff6b73;
    --danger-soft: #2e1a1d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -12px rgba(0, 0, 0, .6);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, .4), 0 24px 48px -20px rgba(0, 0, 0, .8);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  background-image:
    radial-gradient(60rem 30rem at 12% -8%, color-mix(in srgb, var(--primary) 14%, transparent), transparent 60%),
    radial-gradient(48rem 26rem at 92% 4%, color-mix(in srgb, var(--success) 12%, transparent), transparent 62%);
  background-repeat: no-repeat;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary-ink); }

.page {
  width: min(720px, 100% - 2rem);
  margin: 0 auto;
  padding: 2.5rem 0 5rem;
}

.page--wide { width: min(940px, 100% - 2rem); }

/* ---------- 页头 ---------- */

.hero { text-align: center; margin-bottom: 1.75rem; }

.hero__eyebrow {
  display: inline-block;
  padding: .25rem .7rem;
  margin-bottom: .9rem;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-ink);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .02em;
}

.hero__title {
  margin: 0 0 .5rem;
  font-size: clamp(1.65rem, 5vw, 2.25rem);
  line-height: 1.25;
  letter-spacing: -.02em;
}

.hero__desc {
  margin: 0 auto;
  max-width: 34rem;
  color: var(--text-soft);
}

/* ---------- 卡片 ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card + .card { margin-top: 1rem; }

.card__body { padding: 1.15rem 1.25rem; }

.section-title {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 2rem 0 .9rem;
  font-size: .95rem;
  font-weight: 700;
  color: var(--text-soft);
}

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

/* ---------- 表单 ---------- */

.field { margin-bottom: .9rem; }

.field:last-child { margin-bottom: 0; }

.label {
  display: block;
  margin-bottom: .4rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-soft);
}

.input,
.textarea {
  width: 100%;
  padding: .7rem .85rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
  line-height: 1.6;
  transition: border-color .15s, box-shadow .15s, background .15s;
}

.textarea { resize: vertical; min-height: 7.5rem; }

.input:focus,
.textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--surface);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
}

.input::placeholder,
.textarea::placeholder { color: var(--muted); }

.row {
  display: flex;
  gap: .7rem;
  flex-wrap: wrap;
}

.row > .field { flex: 1 1 10rem; margin-bottom: 0; }

.counter {
  margin-top: .35rem;
  font-size: .76rem;
  color: var(--muted);
  text-align: right;
}

.counter--over { color: var(--danger); font-weight: 600; }

/* 蜜罐字段：真人看不见，爬虫会填 */
.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .62rem 1.1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  font-size: .9rem;
  cursor: pointer;
  transition: transform .1s, background .15s, border-color .15s, opacity .15s;
  white-space: nowrap;
}

.btn:hover:not(:disabled) { border-color: var(--muted); }
.btn:active:not(:disabled) { transform: translateY(1px); }

.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

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

.btn--primary:hover:not(:disabled) {
  background: var(--primary-ink);
  border-color: var(--primary-ink);
}

.btn--block { width: 100%; }

.btn--sm { padding: .38rem .7rem; font-size: .82rem; }

.btn--ghost { background: transparent; }

.btn--danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, var(--line-strong)); }
.btn--danger:hover:not(:disabled) { background: var(--danger-soft); border-color: var(--danger); }

.btn--ok { color: var(--success); border-color: color-mix(in srgb, var(--success) 35%, var(--line-strong)); }
.btn--ok:hover:not(:disabled) { background: var(--success-soft); border-color: var(--success); }

.btn-row {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: .8rem;
}

.spacer { flex: 1; }

/* ---------- 标签 / 徽章 ---------- */

.tag {
  display: inline-block;
  padding: .1rem .55rem;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-ink);
  font-size: .74rem;
  font-weight: 600;
}

.badge {
  display: inline-block;
  padding: .1rem .55rem;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 700;
  border: 1px solid transparent;
}

.badge--new { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }
.badge--public { background: var(--success-soft); color: var(--success); border-color: color-mix(in srgb, var(--success) 30%, transparent); }
.badge--private { background: var(--primary-soft); color: var(--primary-ink); border-color: color-mix(in srgb, var(--primary) 30%, transparent); }
.badge--hidden { background: var(--danger-soft); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }

/* ---------- 提问墙 ---------- */

.wall { display: grid; gap: 1rem; }

.qa { padding: 1.15rem 1.25rem; }

.qa__meta {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: .6rem;
  font-size: .78rem;
  color: var(--muted);
}

.qa__author { font-weight: 600; color: var(--text-soft); }

.qa__content {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.qa__answer {
  position: relative;
  margin-top: .9rem;
  padding: .85rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--line);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.qa__answer::before {
  content: "站长回答";
  display: block;
  margin-bottom: .35rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--primary-ink);
}

.qa--pinned { border-color: color-mix(in srgb, var(--primary) 40%, var(--line)); }

/* ---------- 提示 / 空状态 ---------- */

.empty {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--muted);
}

.alert {
  padding: .7rem .9rem;
  border-radius: var(--radius-sm);
  font-size: .87rem;
  margin-bottom: .9rem;
  border: 1px solid transparent;
}

.alert--error { background: var(--danger-soft); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
.alert--ok { background: var(--success-soft); color: var(--success); border-color: color-mix(in srgb, var(--success) 30%, transparent); }
.alert--info { background: var(--primary-soft); color: var(--primary-ink); border-color: color-mix(in srgb, var(--primary) 30%, transparent); }
.alert[hidden] { display: none; }

/* ---------- 回执面板 ---------- */

.receipt {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--success-soft);
  border: 1px solid color-mix(in srgb, var(--success) 35%, transparent);
}

.receipt__title { margin: 0 0 .35rem; font-weight: 700; color: var(--success); }

.receipt__hint { margin: 0 0 .7rem; font-size: .85rem; color: var(--text-soft); }

.copybox {
  display: flex;
  gap: .5rem;
  align-items: stretch;
}

.copybox .input {
  font-size: .82rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- 管理员卡片 ---------- */

.toolbar {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 1rem;
}

.chips { display: flex; gap: .4rem; flex-wrap: wrap; }

.chip {
  padding: .32rem .75rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text-soft);
  font: inherit;
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
}

.chip:hover { border-color: var(--muted); }

.chip[aria-pressed="true"] {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.stats {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.stat {
  flex: 1 1 5.5rem;
  padding: .6rem .75rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--line);
  text-align: center;
}

.stat__n { display: block; font-size: 1.25rem; font-weight: 700; line-height: 1.3; }
.stat__k { font-size: .72rem; color: var(--muted); }

.qcard { padding: 1.05rem 1.15rem; }

.qcard--hidden { opacity: .62; }

.qcard__head {
  display: flex;
  gap: .45rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: .6rem;
  font-size: .76rem;
  color: var(--muted);
}

.qcard__content {
  margin: 0 0 .2rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-weight: 500;
}

.followups {
  margin-top: .7rem;
  padding: .6rem .8rem;
  border-left: 3px solid var(--line-strong);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--surface-2);
  font-size: .87rem;
  color: var(--text-soft);
}

.followups__item { white-space: pre-wrap; overflow-wrap: anywhere; }
.followups__item + .followups__item { margin-top: .45rem; }
.followups__label { font-size: .72rem; font-weight: 700; color: var(--muted); display: block; }

.qcard__tools { margin-top: .8rem; }

.seg {
  display: inline-flex;
  padding: 2px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--line);
}

.seg button {
  padding: .3rem .8rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--text-soft);
  font: inherit;
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
}

.seg button[aria-pressed="true"] { background: var(--surface); color: var(--primary-ink); box-shadow: var(--shadow); }

.hint { font-size: .78rem; color: var(--muted); margin: .7rem 0 0; }

/* ---------- 登录 ---------- */

.login-wrap {
  max-width: 24rem;
  margin: 12vh auto 0;
}

/* ---------- 历史列表 ---------- */

.history { display: grid; gap: .6rem; }

.history__item {
  display: block;
  width: 100%;
  text-align: left;
  padding: .8rem .95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.history__item:hover { border-color: var(--primary); }

.history__snippet {
  display: block;
  margin-top: .2rem;
  color: var(--muted);
  font-size: .84rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.footer {
  margin-top: 3rem;
  text-align: center;
  font-size: .8rem;
  color: var(--muted);
}

.footer a { color: var(--muted); }

/* ---------- 提示条 ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translate(-50%, 1rem);
  padding: .6rem 1.1rem;
  border-radius: 999px;
  background: var(--text);
  color: var(--surface);
  font-size: .87rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 50;
}

.toast--show { opacity: 1; transform: translate(-50%, 0); }
.toast--error { background: var(--danger); color: #fff; }

@media (max-width: 480px) {
  .page { width: calc(100% - 1.4rem); padding-top: 1.6rem; }
  .card__body, .qa, .qcard { padding: .95rem 1rem; }
}