/* ============================================================
   轻论坛 · 科技风主题
   主色: 霓虹青 #00d4ff / 霓虹紫 #a855f7
   底:   深蓝黑渐变
   风格: 玻璃拟态 + 发光边 + 粒子背景
   ============================================================ */

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-0: #060816;
  --bg-1: #0c1128;
  --bg-2: #141a3d;
  --line: rgba(0, 212, 255, 0.15);
  --line-strong: rgba(0, 212, 255, 0.35);
  --glow-cyan: #00d4ff;
  --glow-purple: #a855f7;
  --glow-green: #22d3ee;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  --danger: #f87171;
  --warn: #fbbf24;
  --ok: #34d399;
}

html, body {
  font-family: "JetBrains Mono", ui-monospace, Menlo, Consolas,
               -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  font-size: 14px;
  line-height: 1.65;
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(168, 85, 247, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 30%, rgba(0, 212, 255, 0.14) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 100%, rgba(34, 211, 238, 0.10) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 50%, var(--bg-0) 100%);
  background-attachment: fixed;
  overflow-x: hidden;
}

/* 全局装饰：网格线 + 背景粒子 */
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  animation: gridshift 20s linear infinite;
}
@keyframes gridshift {
  from { background-position: 0 0, 0 0; }
  to   { background-position: 0 48px, 48px 0; }
}

body::after {
  content: "";
  position: fixed;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 40%, rgba(0,212,255,.08), transparent 20%),
              radial-gradient(circle at 70% 60%, rgba(168,85,247,.08), transparent 20%);
  pointer-events: none;
  z-index: 0;
  animation: floatglow 15s ease-in-out infinite alternate;
}
@keyframes floatglow {
  from { transform: translate(0, 0); }
  to   { transform: translate(-3%, 2%); }
}

#bg-particles {
  position: fixed; inset: 0;
  z-index: 0; pointer-events: none;
}

a { color: var(--glow-cyan); text-decoration: none; transition: color .2s, text-shadow .2s; }
a:hover { color: #67e8f9; text-shadow: 0 0 6px rgba(0,212,255,.5); }
img { max-width: 100%; vertical-align: middle; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; position: relative; z-index: 1; }
.main { min-height: 60vh; padding: 24px 20px; }

/* ========== 顶部导航 ========== */
.topbar {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(8, 12, 32, 0.65);
  border-bottom: 1px solid var(--line-strong);
}
.topbar::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glow-cyan), var(--glow-purple), transparent);
  opacity: .7;
  pointer-events: none;
}
.topbar .wrap { display: flex; align-items: center; height: 60px; gap: 28px; }

.logo {
  font-size: 19px; font-weight: 700; letter-spacing: 2px;
  background: linear-gradient(135deg, var(--glow-cyan), var(--glow-purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 20px rgba(0,212,255,.3);
  position: relative;
}
.logo::before {
  content: "> ";
  color: var(--glow-cyan);
  -webkit-text-fill-color: var(--glow-cyan);
  animation: blink 1.2s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.nav { display: flex; gap: 6px; margin-left: 8px; }
.nav a {
  color: var(--text-dim); font-size: 13px;
  padding: 6px 14px; border-radius: 4px;
  border: 1px solid transparent;
  transition: all .2s;
  position: relative;
}
.nav a:hover, .nav a.active {
  color: var(--glow-cyan);
  background: rgba(0, 212, 255, 0.08);
  border-color: var(--line);
  box-shadow: inset 0 0 12px rgba(0,212,255,.08);
}

.user-area { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.mini-avatar {
  width: 28px; height: 28px; border-radius: 50%; margin-right: 6px;
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 8px rgba(0,212,255,.3);
}

.btn-primary {
  background: linear-gradient(135deg, var(--glow-cyan), var(--glow-purple));
  color: #fff !important; padding: 7px 18px;
  border-radius: 4px; font-size: 13px; font-weight: 500;
  border: 1px solid rgba(255,255,255,.1);
  box-shadow: 0 0 12px rgba(0,212,255,.35);
  transition: all .2s;
  letter-spacing: 1px;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 22px rgba(0,212,255,.65);
  color: #fff !important;
}
.btn-link {
  color: var(--text-dim); font-size: 13px;
  border-bottom: 1px dashed transparent;
}
.btn-link:hover { color: var(--glow-cyan); border-bottom-color: var(--glow-cyan); text-shadow: none; }

.bell {
  color: var(--text-dim); position: relative; font-size: 13px;
  padding: 5px 10px; border-radius: 4px; border: 1px solid var(--line);
}
.bell:hover { color: var(--glow-cyan); border-color: var(--glow-cyan); }
.bell .badge {
  position: absolute; top: -6px; right: -6px;
  background: var(--danger); color: #fff; font-size: 10px; font-weight: 700;
  border-radius: 10px; padding: 1px 5px; min-width: 16px; text-align: center;
  box-shadow: 0 0 8px rgba(248,113,113,.6);
}

/* ========== Footer ========== */
.footer {
  text-align: center; padding: 32px 0 22px;
  color: var(--text-muted); font-size: 12px;
  border-top: 1px solid var(--line); margin-top: 40px;
  position: relative; z-index: 1;
}
.footer::before {
  content: "";
  position: absolute; top: 0; left: 20%; right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glow-purple), transparent);
  opacity: .6;
}
.footer a { color: var(--text-dim); }
.footer a:hover { color: var(--glow-cyan); text-shadow: none; }

/* ========== 卡片（玻璃拟态） ========== */
.card {
  background: rgba(14, 20, 48, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 6px;
  margin-bottom: 18px;
  overflow: hidden;
  position: relative;
}
.card::before {
  content: "";
  position: absolute; inset: 0; pointer-events: none;
  border-radius: 6px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
}
.card:hover {
  border-color: var(--line-strong);
  box-shadow: 0 0 22px rgba(0,212,255,.12);
}
.card .card-hd {
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center;
  background: linear-gradient(90deg, rgba(0,212,255,.06), transparent);
}
.card .card-hd h2 {
  font-size: 15px; font-weight: 600; color: var(--glow-cyan);
  letter-spacing: 1px;
  display: flex; align-items: center; gap: 8px;
}
.card .card-hd h2::before {
  content: ""; width: 3px; height: 14px;
  background: linear-gradient(180deg, var(--glow-cyan), var(--glow-purple));
  border-radius: 2px;
  box-shadow: 0 0 8px var(--glow-cyan);
}
.card .card-bd { padding: 14px 20px; }

/* ========== 首页布局 ========== */
.home-grid { display: grid; grid-template-columns: 220px 1fr 280px; gap: 18px; }
@media (max-width: 960px) {
  .home-grid { grid-template-columns: 1fr; }
  .side { display: none; }
}

/* ========== 板块列表 ========== */
.forum-list { padding: 0; }
.forum-row {
  display: flex; align-items: center; padding: 14px 20px;
  border-bottom: 1px solid var(--line); gap: 16px;
  transition: background .2s;
}
.forum-row:last-child { border-bottom: none; }
.forum-row:hover { background: rgba(0,212,255,.04); }

.forum-icon {
  width: 52px; height: 52px; border-radius: 8px;
  background: linear-gradient(135deg, #0ea5e9, var(--glow-purple));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 22px; font-weight: 700;
  box-shadow: 0 0 18px rgba(0,212,255,.35);
  position: relative;
}
.forum-icon::after {
  content: ""; position: absolute; inset: -2px; border-radius: 10px;
  border: 1px solid rgba(0,212,255,.3); pointer-events: none;
}
.forum-info { flex: 1; }
.forum-info h3 { font-size: 15px; margin-bottom: 3px; }
.forum-info h3 a { color: var(--text); font-weight: 500; }
.forum-info h3 a:hover { color: var(--glow-cyan); }
.forum-info p { color: var(--text-muted); font-size: 12px; }
.forum-stats { text-align: right; font-size: 12px; color: var(--text-muted); }
.forum-stats strong { display: block; color: var(--glow-cyan); font-size: 16px; text-shadow: 0 0 8px rgba(0,212,255,.4); }

/* ========== 主题列表 ========== */
.thread-list { padding: 0; }
.thread-item {
  display: flex; padding: 16px 20px; gap: 16px;
  border-bottom: 1px solid var(--line);
  transition: background .2s;
}
.thread-item:last-child { border-bottom: none; }
.thread-item:hover { background: rgba(0,212,255,.03); }
.thread-item .avatar {
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 10px rgba(0,212,255,.25);
}
.thread-item .thread-main { flex: 1; min-width: 0; }
.thread-item .thread-title {
  font-size: 15px; font-weight: 500; margin-bottom: 5px;
}
.thread-item .thread-title a { color: var(--text); }
.thread-item .thread-title a:hover { color: var(--glow-cyan); text-shadow: 0 0 6px rgba(0,212,255,.4); }
.thread-item .thread-title .tag {
  display: inline-block; padding: 1px 8px; margin-right: 6px;
  font-size: 10px; color: #fff; border-radius: 3px; letter-spacing: .5px;
  vertical-align: middle;
}
.tag-top      { background: linear-gradient(135deg, #ef4444, #f97316); box-shadow: 0 0 6px rgba(239,68,68,.5); }
.tag-essence  { background: linear-gradient(135deg, #f59e0b, #fbbf24); color:#1a1a2e; box-shadow: 0 0 6px rgba(251,191,36,.5); font-weight:700; }
.tag-hot      { background: linear-gradient(135deg, #ec4899, #f43f5e); box-shadow: 0 0 6px rgba(244,63,94,.5); }
.tag-close    { background: #475569; }

.thread-item .thread-meta { font-size: 12px; color: var(--text-muted); }
.thread-item .thread-meta a { color: var(--text-muted); margin-right: 8px; }
.thread-item .thread-meta .num { color: var(--glow-cyan); }
.thread-item .thread-stats { text-align: right; font-size: 12px; color: var(--text-muted); min-width: 42px; }
.thread-item .thread-stats strong {
  display: block; color: #f472b6; font-size: 18px;
  text-shadow: 0 0 8px rgba(244,114,182,.4);
}

/* ========== 分页 ========== */
.pagination { padding: 20px; text-align: center; }
.pagination a {
  display: inline-block; padding: 6px 14px; margin: 0 3px;
  border: 1px solid var(--line-strong); border-radius: 4px;
  color: var(--text-dim); font-size: 13px;
  background: rgba(0,212,255,.04);
  transition: all .2s;
}
.pagination a:hover { color: var(--glow-cyan); border-color: var(--glow-cyan); box-shadow: 0 0 10px rgba(0,212,255,.3); }
.pagination a.active {
  background: linear-gradient(135deg, var(--glow-cyan), var(--glow-purple));
  color: #fff; border-color: transparent;
  box-shadow: 0 0 14px rgba(0,212,255,.5);
}

/* ========== 主题详情 ========== */
.thread-detail .thread-title {
  font-size: 22px; margin: 0 0 12px;
  background: linear-gradient(135deg, #fff, var(--glow-cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.thread-detail .thread-meta {
  color: var(--text-muted); margin-bottom: 20px; font-size: 13px;
  padding-bottom: 14px; border-bottom: 1px dashed var(--line);
}
.thread-detail .thread-content {
  font-size: 15px; line-height: 1.85; min-height: 100px;
  color: var(--text);
}
.thread-detail .thread-content img.post-img {
  max-width: 100%; margin: 10px 0; border-radius: 6px;
  border: 1px solid var(--line);
  box-shadow: 0 4px 18px rgba(0,0,0,.4);
}
.thread-detail .thread-content blockquote.post-quote {
  background: rgba(0,212,255,.06); padding: 10px 16px; margin: 14px 0;
  border-left: 3px solid var(--glow-cyan); color: var(--text-dim);
  border-radius: 0 4px 4px 0;
}
.thread-detail .thread-actions {
  margin-top: 24px; padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex; gap: 14px; flex-wrap: wrap;
}
.thread-detail .thread-actions a {
  padding: 6px 18px;
  border: 1px solid var(--line-strong); border-radius: 20px;
  color: var(--text-dim); font-size: 13px;
  background: rgba(0,212,255,.04);
  transition: all .2s;
}
.thread-detail .thread-actions a:hover,
.thread-detail .thread-actions a.active {
  color: var(--glow-cyan); border-color: var(--glow-cyan);
  box-shadow: 0 0 14px rgba(0,212,255,.35);
}

/* ========== 回复列表 ========== */
.reply-item {
  display: flex; padding: 18px 20px; gap: 14px;
  border-bottom: 1px solid var(--line);
  transition: background .2s;
}
.reply-item:last-child { border-bottom: none; }
.reply-item:hover { background: rgba(168,85,247,.03); }
.reply-item .avatar {
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 10px rgba(168,85,247,.3);
}
.reply-item .reply-main { flex: 1; min-width: 0; }
.reply-item .reply-meta { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.reply-item .reply-meta .floor {
  color: var(--glow-purple); margin-right: 10px;
  padding: 1px 8px; border-radius: 3px;
  background: rgba(168,85,247,.1); border: 1px solid rgba(168,85,247,.25);
}
.reply-item .reply-meta .group-tag {
  display: inline-block; padding: 1px 6px; font-size: 10px;
  color: #fff; border-radius: 3px; margin-right: 6px; background: #64748b; letter-spacing: .5px;
}
.reply-item .reply-meta .group-tag.g1 { background: linear-gradient(135deg, #ef4444, #ec4899); box-shadow: 0 0 6px rgba(236,72,153,.5); }
.reply-item .reply-meta .group-tag.g2 { background: linear-gradient(135deg, #f97316, #fbbf24); color:#1a1a2e; }
.reply-item .reply-content { font-size: 14px; line-height: 1.75; color: var(--text); }
.reply-item .reply-content img.post-img {
  max-width: 100%; margin: 8px 0; border-radius: 4px;
  border: 1px solid var(--line);
}

/* ========== 表单 ========== */
.form-box {
  background: rgba(14, 20, 48, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  padding: 30px 36px; border-radius: 8px;
  box-shadow: 0 0 40px rgba(0,212,255,.08);
  max-width: 520px; margin: 20px auto;
}
.form-box h2 {
  margin-bottom: 22px; font-size: 18px;
  background: linear-gradient(135deg, var(--glow-cyan), var(--glow-purple));
  -webkit-background-clip: text; background-clip: text;
  color: transparent; letter-spacing: 2px; text-align: center;
}
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 7px; color: var(--text-dim); font-size: 13px; letter-spacing: .5px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 14px;
  background: rgba(6, 10, 28, 0.6);
  border: 1px solid var(--line-strong); border-radius: 4px;
  font-size: 14px; font-family: inherit; color: var(--text);
  transition: all .2s;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--glow-cyan); outline: none;
  box-shadow: 0 0 14px rgba(0,212,255,.3), inset 0 0 6px rgba(0,212,255,.08);
  background: rgba(6,10,28,.8);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-actions { text-align: center; margin-top: 22px; }
.form-actions button, .form-actions input[type=submit] {
  background: linear-gradient(135deg, var(--glow-cyan), var(--glow-purple));
  color: #fff; padding: 10px 36px; border: none;
  border-radius: 4px; font-size: 14px; cursor: pointer; letter-spacing: 2px;
  box-shadow: 0 0 18px rgba(0,212,255,.4);
  transition: all .2s;
}
.form-actions button:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(0,212,255,.7);
}
.form-tip { color: var(--text-muted); font-size: 12px; margin-top: 8px; text-align: center; }

/* ========== 用户个人页 ========== */
.profile-hd {
  background: linear-gradient(135deg, rgba(0,212,255,.15), rgba(168,85,247,.15));
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 36px 20px; color: #fff; text-align: center;
  position: relative; overflow: hidden;
  margin-bottom: -1px;
}
.profile-hd::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,.1) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: .4; pointer-events: none;
}
.profile-hd img.avatar-lg {
  width: 90px; height: 90px; border-radius: 50%;
  border: 3px solid var(--glow-cyan);
  box-shadow: 0 0 24px rgba(0,212,255,.5);
  position: relative; z-index: 1;
}
.profile-hd h2 { margin: 10px 0 4px; font-size: 22px; position: relative; z-index: 1; text-shadow: 0 0 14px rgba(0,212,255,.4); }
.profile-hd p { color: var(--text-dim); font-size: 13px; position: relative; z-index: 1; }

.profile-tabs {
  display: flex;
  background: rgba(14,20,48,.7);
  border: 1px solid var(--line); border-top: none;
  border-radius: 0 0 8px 8px;
  overflow: hidden;
}
.profile-tabs a {
  padding: 14px 26px; color: var(--text-dim);
  border-bottom: 2px solid transparent;
  transition: all .2s;
  font-size: 13px; letter-spacing: .5px;
}
.profile-tabs a:hover { color: var(--glow-cyan); }
.profile-tabs a.active {
  color: var(--glow-cyan); border-color: var(--glow-cyan);
  background: rgba(0,212,255,.08);
}

/* ========== 提示页 ========== */
.msg-page { padding: 80px 0; text-align: center; position: relative; z-index: 1; }
.msg-box {
  display: inline-block; padding: 36px 60px; border-radius: 8px;
  background: rgba(14,20,48,.75);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 30px rgba(0,212,255,.15);
  position: relative;
}
.msg-box.error   { border-color: #f87171; box-shadow: 0 0 30px rgba(248,113,113,.2); }
.msg-box.success { border-color: #34d399; box-shadow: 0 0 30px rgba(52,211,153,.2); }
.msg-box.info    { border-color: var(--glow-cyan); }
.msg-box p { margin: 10px 0; color: var(--text); }
.msg-box a {
  color: var(--glow-cyan); text-decoration: underline;
}

/* ========== 侧边小部件 ========== */
.widget {
  background: rgba(14,20,48,.55);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px 20px; margin-bottom: 18px;
  transition: all .2s;
}
.widget:hover { border-color: var(--line-strong); box-shadow: 0 0 18px rgba(168,85,247,.12); }
.widget h3 {
  font-size: 13px; margin-bottom: 12px;
  color: var(--glow-purple);
  letter-spacing: 2px; text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
}
.widget h3::before {
  content: "▸"; font-size: 12px; color: var(--glow-cyan);
}
.widget ul { list-style: none; }
.widget li {
  padding: 7px 0; border-bottom: 1px dashed var(--line);
  font-size: 13px; color: var(--text-dim);
  transition: color .15s;
}
.widget li:last-child { border: none; }
.widget li:hover { color: var(--glow-cyan); }
.widget .stats-row { display: flex; justify-content: space-around; text-align: center; padding: 10px 0; }
.widget .stats-row .stat strong {
  display: block; font-size: 22px; color: var(--glow-cyan);
  text-shadow: 0 0 10px rgba(0,212,255,.4);
}
.widget .stat span { font-size: 11px; color: var(--text-muted); letter-spacing: 1px; }

/* ========== 编辑器工具栏 ========== */
.editor-toolbar {
  margin-bottom: 8px; padding: 8px;
  background: rgba(6,10,28,.6);
  border: 1px solid var(--line); border-radius: 4px;
  display: flex; flex-wrap: wrap; gap: 4px;
}
.editor-toolbar button {
  background: rgba(0,212,255,.08);
  border: 1px solid var(--line-strong);
  padding: 4px 12px; border-radius: 3px;
  cursor: pointer; font-size: 12px; color: var(--text-dim);
  font-family: inherit;
  transition: all .15s;
}
.editor-toolbar button:hover {
  background: rgba(0,212,255,.2); color: var(--glow-cyan);
  border-color: var(--glow-cyan);
  box-shadow: 0 0 8px rgba(0,212,255,.3);
}

/* ========== 通知 ========== */
.noti-item {
  padding: 14px 20px; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 12px;
  transition: background .15s;
}
.noti-item:hover { background: rgba(0,212,255,.04); }
.noti-item.unread { background: rgba(0,212,255,.08); }
.noti-item.unread::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--glow-cyan); box-shadow: 0 0 10px var(--glow-cyan);
  margin-left: -4px;
}
.noti-item img {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--line-strong);
}
.noti-item .noti-text { flex: 1; font-size: 13px; color: var(--text); }
.noti-item .noti-time { color: var(--text-muted); font-size: 12px; }

/* ========== 搜索 ========== */
.search-bar {
  display: flex; max-width: 620px; margin: 0 auto 24px;
  border: 1px solid var(--line-strong); border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 0 20px rgba(0,212,255,.1);
  transition: all .2s;
}
.search-bar:focus-within {
  border-color: var(--glow-cyan);
  box-shadow: 0 0 24px rgba(0,212,255,.3);
}
.search-bar input {
  flex: 1; padding: 12px 16px;
  background: rgba(6,10,28,.7); color: var(--text);
  border: none; font-size: 14px; font-family: inherit;
  outline: none;
}
.search-bar button {
  padding: 0 28px;
  background: linear-gradient(135deg, var(--glow-cyan), var(--glow-purple));
  color: #fff; border: none; cursor: pointer;
  font-size: 13px; letter-spacing: 2px;
  font-family: inherit;
}
.search-bar button:hover { filter: brightness(1.15); }

/* ========== 板块内主题 ========== */
.forum-threads-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px;
}
.forum-threads-head h2 {
  font-size: 16px; color: var(--glow-cyan); letter-spacing: 2px;
}
.forum-threads-head .btn-primary {
  padding: 6px 18px; font-size: 12px; letter-spacing: 1px;
}

/* 首页 Hero（可选） */
.hero {
  background: linear-gradient(135deg, rgba(0,212,255,.12), rgba(168,85,247,.12));
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 32px 36px;
  margin-bottom: 18px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 23px, rgba(0,212,255,.06) 23px, rgba(0,212,255,.06) 24px);
  pointer-events: none;
}
.hero h1 {
  font-size: 24px; color: #fff; margin-bottom: 6px; position: relative;
  letter-spacing: 2px;
}
.hero p { color: var(--text-dim); font-size: 13px; position: relative; }