/* ============================================
   黄海同学圈 · 公共样式
   所有页面共用，改这里所有页面一起变
   ============================================ */

:root {
  --blue: #4a7dff;
  --blue-dark: #3a68e0;
  --blue-light: #eef3ff;
  --bg: #f2f4f7;
  --card: #ffffff;
  --text: #1f2328;
  --muted: #8a919e;
  --line: #e8ebf0;
  --danger: #e5534b;
  --success: #22a06b;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 24px 16px 96px;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 520px;
  margin: 0 auto;
}

/* ---------- 页头 ---------- */

header {
  text-align: center;
  margin-bottom: 20px;
}

header h1 {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: 2px;
}

header p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 卡片 ---------- */

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 14px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.card .text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.card .meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
}

/* 可点击的卡片 */
.card-link {
  display: block;
  transition: 0.15s;
}

.card-link:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.09);
}

/* 列表里的缩略图 */
.card-img {
  display: block;
  width: 100%;
  max-height: 240px;
  object-fit: cover;
  margin: 0 0 12px;
  border-radius: 10px;
}

/* 列表里只显示前 4 行，点进去看全部 */
.text.clamp {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 分类标签 ---------- */

.tag {
  display: inline-block;
  padding: 2px 8px;
  margin-right: 6px;
  font-size: 11px;
  border-radius: 20px;
  background: var(--blue-light);
  color: var(--blue-dark);
  vertical-align: middle;
}

/* ---------- 工具栏（搜索 + 分类） ---------- */

.toolbar {
  margin-bottom: 16px;
}

.search {
  width: 100%;
  padding: 11px 14px;
  margin-bottom: 12px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
}

.search:focus {
  border-color: var(--blue);
}

.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

.chips::-webkit-scrollbar {
  display: none;
}

.chip {
  flex: none;
  padding: 7px 14px;
  font-size: 13px;
  font-family: inherit;
  color: #5b6270;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  cursor: pointer;
  transition: 0.15s;
}

.chip.active {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

/* ---------- 点赞 ---------- */

.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 12px;
  font-family: inherit;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 20px;
  cursor: pointer;
  transition: 0.15s;
}

.like-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.like-btn.liked {
  color: #e5534b;
  border-color: #ffd9d6;
  background: #fff5f4;
}

/* ---------- 按钮 ---------- */

.post-btn {
  display: block;
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: var(--blue);
  color: #ffffff;
  font-size: 16px;
  font-family: inherit;
  text-align: center;
  cursor: pointer;
  transition: 0.15s;
}

.post-btn:hover {
  background: var(--blue-dark);
}

.post-btn:disabled {
  background: #b9c6e8;
  cursor: not-allowed;
}

/* 悬浮投稿按钮 */
.fab {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  padding: 13px 34px;
  font-size: 15px;
  color: #fff;
  background: var(--blue);
  border-radius: 40px;
  box-shadow: 0 6px 18px rgba(74, 125, 255, 0.4);
  transition: 0.15s;
}

.fab:hover {
  background: var(--blue-dark);
}

/* 返回链接 */
.back-link {
  display: block;
  margin: 20px auto 0;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}

.back-link:hover {
  color: var(--blue);
}

/* ---------- 投稿表单 ---------- */

.field {
  margin-bottom: 22px;
}

.label {
  display: block;
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 600;
}

.radio-row {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.radio-row label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.radio-row input {
  accent-color: var(--blue);
}

.textarea,
.input {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  line-height: 1.6;
  color: var(--text);
  background: #fafbfc;
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  resize: vertical;
}

.textarea:focus,
.input:focus {
  border-color: var(--blue);
  background: #fff;
}

.hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.hint.warn {
  color: var(--danger);
}

/* 图片上传 */
.upload {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 26px;
  font-size: 14px;
  color: var(--muted);
  background: #fafbfc;
  border: 2px dashed var(--line);
  border-radius: 10px;
  cursor: pointer;
  transition: 0.15s;
}

.upload:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.preview {
  position: relative;
  display: inline-block;
}

.preview img {
  display: block;
  max-width: 100%;
  border-radius: 10px;
}

.preview .remove {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 26px;
  height: 26px;
  font-size: 14px;
  line-height: 1;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

/* ---------- 空状态 ---------- */

.empty {
  padding: 60px 20px;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}

/* ---------- 提示条 ---------- */

.toast {
  position: fixed;
  left: 50%;
  top: 24px;
  transform: translate(-50%, -20px);
  padding: 11px 20px;
  font-size: 14px;
  color: #fff;
  background: rgba(31, 35, 40, 0.9);
  border-radius: 10px;
  opacity: 0;
  pointer-events: none;
  transition: 0.25s;
  z-index: 99;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--danger);
}

/* ---------- 详情页 ---------- */

.detail-text {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  white-space: pre-wrap;
  word-break: break-word;
}

.detail-img {
  display: block;
  width: 100%;
  margin: 16px 0;
  border-radius: 10px;
}

/* ---------- 审核后台 ---------- */

.admin-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.stats {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.stat {
  flex: 1;
  padding: 14px 10px;
  text-align: center;
  background: var(--card);
  border-radius: 10px;
}

.stat b {
  display: block;
  font-size: 22px;
  color: var(--blue-dark);
}

.stat span {
  font-size: 12px;
  color: var(--muted);
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.tab {
  flex: 1;
  padding: 9px;
  font-size: 13px;
  font-family: inherit;
  color: #5b6270;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
}

.tab.active {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

.actions {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.btn {
  flex: 1;
  padding: 9px;
  font-size: 13px;
  font-family: inherit;
  color: #5b6270;
  background: #f5f7fa;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.btn.ok {
  color: #fff;
  background: var(--success);
}

.btn.no {
  color: #fff;
  background: var(--danger);
}

.btn:hover {
  opacity: 0.88;
}

.login-box {
  max-width: 320px;
  margin: 80px auto 0;
  padding: 24px;
  text-align: center;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.login-box h2 {
  margin: 0 0 6px;
  font-size: 18px;
}

.login-box p {
  margin: 0 0 18px;
  font-size: 12px;
  color: var(--muted);
}

.login-box .input {
  margin-bottom: 12px;
}

/* ---------- 手机适配 ---------- */

@media (max-width: 420px) {
  body {
    padding: 18px 12px 92px;
  }

  header h1 {
    font-size: 24px;
  }
}