/* 汕头奶龙中学 —— 简洁版样式
   配色取聿怀校徽的红与金，底色米白，尽量少装饰。 */

:root {
  --bg: #fbf8f2;
  --panel: #ffffff;
  --ink: #221f1a;
  --muted: #7b7368;
  --red: #b5232a;
  --red-dark: #8e1820;
  --gold: #d9a53a;
  --line: #ece4d6;
  --radius: 16px;
  --maxw: 1060px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --serif: "Songti SC", "STSong", "SimSun", Georgia, serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--red); text-decoration: none; }
a:hover { text-decoration: underline; }

img { display: block; max-width: 100%; }

.wrap { width: min(100% - 40px, var(--maxw)); margin-inline: auto; }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(251, 248, 242, 0.86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 62px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 50%; }
.brand span { font-weight: 700; letter-spacing: 0.06em; }

.nav { margin-left: auto; display: flex; gap: 4px; }
.nav a {
  color: var(--muted);
  font-size: 0.94rem;
  padding: 7px 12px;
  border-radius: 999px;
  text-decoration: none;
  transition: color .15s, background .15s;
}
.nav a:hover { color: var(--ink); background: rgba(0, 0, 0, 0.04); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--red); background: rgba(181, 35, 42, 0.08); font-weight: 600; }

/* ---------- 首页主视觉 ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 36px;
  padding: clamp(28px, 6vw, 64px) 0 clamp(24px, 4vw, 48px);
}
.hero-copy { min-width: 0; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2.1rem, 5.4vw, 3.6rem);
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: 0.01em;
}
.hero .sub {
  font-family: var(--serif);
  font-size: clamp(1rem, 2.2vw, 1.22rem);
  color: var(--muted);
  margin: 0 0 10px;
}
.hero .tagline { color: var(--muted); margin: 0 0 28px; max-width: 34ch; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform .12s ease, background .15s, color .15s, border-color .15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: #d8cdb8; background: #fff; }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-figure { position: relative; display: flex; justify-content: center; }
.hero-figure img {
  width: min(100%, 460px);
  filter: drop-shadow(0 26px 34px rgba(80, 52, 10, 0.18));
  animation: float 5.5s ease-in-out infinite;
}
.hero-figure::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 46%;
  height: 18px;
  background: radial-gradient(closest-side, rgba(90, 60, 10, 0.16), transparent);
  transform: translateX(-50%);
  border-radius: 50%;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---------- 卡片入口 ---------- */
.section-title {
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 16px;
  font-weight: 600;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  padding-bottom: clamp(36px, 6vw, 72px);
}
.card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  color: var(--ink);
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s;
}
.card:hover {
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(60, 42, 12, 0.08);
  border-color: #e2d6c2;
}
.card .k { font-size: 1.06rem; font-weight: 650; }
.card .d { font-size: 0.9rem; color: var(--muted); }
.card .go { margin-top: 8px; font-size: 0.85rem; color: var(--red); font-weight: 600; }

/* ---------- 通用页 ---------- */
.page { padding: clamp(32px, 5vw, 56px) 0 clamp(48px, 8vw, 88px); }
.page h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); margin: 0 0 10px; }
.lede { color: var(--muted); margin: 0 0 28px; max-width: 62ch; }

.prose { max-width: 68ch; }
.prose h2 { font-size: 1.12rem; margin: 32px 0 10px; }
.prose p { margin: 0 0 12px; }
.prose ul { margin: 0 0 12px; padding-left: 20px; }
.prose li { margin: 4px 0; }
.prose .note { color: var(--muted); font-size: 0.9rem; }

/* ---------- 广场 ---------- */
.square { max-width: 620px; }
.composer {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px 10px;
}
.composer textarea {
  width: 100%;
  border: 0;
  outline: 0;
  resize: vertical;
  font: inherit;
  color: var(--ink);
  background: transparent;
  min-height: 66px;
}
.composer textarea::placeholder { color: #b3aa9c; }
.composer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
  margin-top: 6px;
}
.composer-bar .muted { font-size: 0.82rem; }
.composer-bar .btn { padding: 8px 18px; font-size: 0.92rem; }

.feed { list-style: none; margin: 18px 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.post {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.post-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.post-head b { font-size: 0.95rem; }
.post-head time { font-size: 0.78rem; color: var(--muted); }
.post p { margin: 0; }

/* 帖子正文：链接与图床图片 */
.post-body { margin: 0; }
.post-body a {
  color: var(--red);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
}
.post-body img {
  display: block;
  max-width: 100%;
  max-height: 420px;
  width: auto;
  height: auto;
  margin: 10px 0 4px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #faf6ee;
}

.note-line { font-size: 0.82rem; margin-top: 16px; }

/* 登录卡 */
.login-panel h2 {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 8px;
}
.login-panel form { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.login-panel input {
  font: inherit;
  color: var(--ink);
  background: #fdfbf7;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
}
.login-panel input:focus { border-color: #d9b7a0; background: #fff; }
.login-panel .btn { align-self: flex-start; }

/* 提示条 */
.msg {
  margin: 12px 0 0;
  font-size: 0.9rem;
  padding: 9px 12px;
  border-radius: 10px;
  background: rgba(181, 35, 42, 0.08);
  color: var(--red);
}
.msg-ok { background: rgba(46, 125, 80, 0.10); color: #2c7a52; }
.msg-warn { background: rgba(181, 35, 42, 0.08); color: var(--red); }

/* 帖子操作 */
.post-actions { display: flex; gap: 6px; margin-top: 10px; }
.act {
  font: inherit;
  font-size: 0.82rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 11px;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.act:hover { color: var(--ink); border-color: #ddd2be; background: #fff; }
.act.on { color: var(--red); border-color: rgba(181, 35, 42, 0.35); background: rgba(181, 35, 42, 0.06); }
.act[disabled] { opacity: .55; cursor: default; }

.btn-sm { padding: 8px 16px; font-size: 0.9rem; }
.feed-empty { margin: 22px 0 8px; }
#more { margin-top: 14px; }
.tabs { display: flex; gap: 8px; margin: 18px 0 6px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 0 40px;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer p { margin: 0 0 6px; }
.site-footer .fine { opacity: .85; }

/* ---------- 移动端 ---------- */
@media (max-width: 780px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-top: 20px;
    text-align: center;
  }
  .hero-copy { order: 2; }
  .hero-figure { order: 1; }
  .hero-figure img { width: min(78vw, 340px); }
  .hero .tagline { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .eyebrow { justify-content: center; }
  .cards { grid-template-columns: 1fr; }
  .nav a { padding: 7px 9px; font-size: 0.88rem; }
  .brand span { font-size: 0.92rem; }
}

@media (max-width: 560px) {
  .brand span { display: none; }
  .nav { gap: 0; }
  .nav a { padding: 6px 8px; font-size: 0.84rem; }
}

/* ---------- 站长分享 ---------- */
.share-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; max-width: 680px; }
.share-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.share-card.pinned { border-color: rgba(181, 35, 42, 0.28); box-shadow: 0 10px 24px rgba(60, 42, 12, 0.06); }
.share-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.share-head h2 { font-size: 1.12rem; margin: 0; }
.share-head time { margin-left: auto; font-size: 0.78rem; color: var(--muted); }
.share-tag { font-size: 0.72rem; color: #fff; background: var(--red); border-radius: 999px; padding: 2px 8px; }
.share-body { color: var(--ink); }
.share-img { display: block; max-width: 100%; max-height: 460px; margin: 8px 0 4px; border-radius: 12px; border: 1px solid var(--line); }
.share-link { margin-top: 12px; }

/* 后台编辑表单 */
.field {
  display: block;
  width: 100%;
  box-sizing: border-box;
  font: inherit;
  color: var(--ink);
  background: #fdfbf7;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
  margin-top: 10px;
}
.field:focus { border-color: #d9b7a0; background: #fff; }
textarea.field { resize: vertical; min-height: 96px; line-height: 1.6; }
.check { display: flex; align-items: center; gap: 8px; margin-top: 12px; font-size: 0.9rem; }
.form-actions { display: flex; gap: 10px; margin-top: 14px; }
.admin-share-item { display: flex; align-items: center; gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.admin-share-item:last-child { border-bottom: 0; }
.admin-share-item .t { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-share-item time { font-size: 0.78rem; color: var(--muted); }

@media (max-width: 560px) {
  .nav a[href="/"] { display: none; }
}

/* ---------- Markdown 渲染 ---------- */
.markdown > :first-child { margin-top: 0; }
.markdown > :last-child { margin-bottom: 0; }
.markdown p { margin: 0 0 10px; }
.markdown h3 { font-size: 1.06rem; margin: 16px 0 8px; }
.markdown h4 { font-size: 1rem; margin: 14px 0 6px; }
.markdown h5 { font-size: 0.94rem; margin: 12px 0 6px; }
.markdown ul, .markdown ol { margin: 0 0 10px; padding-left: 22px; }
.markdown li { margin: 3px 0; }
.markdown blockquote { margin: 0 0 10px; padding: 6px 12px; border-left: 3px solid var(--line); color: var(--muted); }
.markdown pre { background: #f6efe2; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; overflow: auto; margin: 0 0 10px; }
.markdown code { background: #f6efe2; border-radius: 5px; padding: 1px 5px; font-size: 0.92em; }
.markdown pre code { background: transparent; padding: 0; }
.markdown img { display: block; max-width: 100%; max-height: 460px; margin: 10px 0; border-radius: 12px; border: 1px solid var(--line); }
.markdown hr { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }
.markdown a { color: var(--red); text-decoration: underline; text-underline-offset: 2px; word-break: break-all; }

.md-preview { margin-top: 10px; padding: 12px 14px; border: 1px dashed var(--line); border-radius: 10px; background: #fdfbf7; }
.md-preview.is-empty { color: var(--muted); font-size: 0.9rem; }