/* TDSI 论坛 · 共享样式 */

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:radial-gradient(ellipse at 20% 0%,#1a1014 0%,#0a0a0f 50%),#0a0a0f;
  color:#e0e0e8;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  font-size:14px;
  line-height:1.6;
}
a{color:#f6821f;text-decoration:none;transition:color .2s}
a:hover{color:#ffa44d}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}

/* ── 顶栏 ──────────────────────────────────── */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(10,10,15,.85);
  backdrop-filter:blur(16px) saturate(180%);
  -webkit-backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.topbar-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:20px;
  padding:12px 24px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:#fff}
.brand-mark{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,#f6821f,#d16b12);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;color:#fff}
.brand-sub{color:rgba(255,255,255,.4);font-size:12px;font-weight:500;margin-left:6px}
.nav{display:flex;gap:4px;flex:1;margin-left:16px}
.nav a{color:rgba(255,255,255,.65);padding:6px 12px;border-radius:8px;font-size:13px;font-weight:500}
.nav a:hover{background:rgba(255,255,255,.05);color:#fff}
.nav a.active{color:#f6821f;background:rgba(246,130,31,.08)}
.topbar-actions{display:flex;align-items:center;gap:8px}

/* ── 通用容器 ──────────────────────────────────── */
.container{max-width:1200px;margin:0 auto;padding:24px}
.layout{display:grid;grid-template-columns:1fr 280px;gap:24px}
@media(max-width:900px){.layout{grid-template-columns:1fr}}

/* ── 按钮 ──────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:8px 16px;border-radius:8px;
  background:rgba(255,255,255,.06);color:#e0e0e8;
  font-size:13px;font-weight:600;
  transition:all .2s;
  border:1px solid rgba(255,255,255,.06);
}
.btn:hover{background:rgba(255,255,255,.1)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:linear-gradient(135deg,#f6821f,#d16b12);color:#fff;border-color:transparent}
.btn-primary:hover{background:linear-gradient(135deg,#ff8a2a,#e07518);color:#fff}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.12)}
.btn-ghost:hover{background:rgba(255,255,255,.05)}
.btn-danger{background:rgba(231,76,60,.15);color:#e57366;border-color:rgba(231,76,60,.25)}
.btn-danger:hover{background:rgba(231,76,60,.25);color:#fff}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-lg{padding:12px 24px;font-size:15px}

/* ── 输入 ──────────────────────────────────── */
.input,.textarea,.select{
  width:100%;padding:10px 12px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:8px;
  color:#fff;
  transition:all .2s;
}
.input:focus,.textarea:focus,.select:focus{outline:none;border-color:#f6821f;background:rgba(255,255,255,.06)}
.textarea{resize:vertical;min-height:120px;font-family:inherit;line-height:1.6}
.field{margin-bottom:14px}
.field-label{display:block;font-size:12px;font-weight:600;color:rgba(255,255,255,.6);margin-bottom:6px}

/* ── 卡片 ──────────────────────────────────── */
.card{
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.06);
  border-radius:14px;
  padding:18px;
}

/* ── 帖子列表项 ──────────────────────────────────── */
.post-list{display:flex;flex-direction:column;gap:10px}
.post-item{
  display:flex;gap:14px;
  padding:16px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.05);
  border-radius:12px;
  transition:all .2s;
}
.post-item:hover{background:rgba(255,255,255,.05);border-color:rgba(246,130,31,.2)}
.post-item-body{flex:1;min-width:0}
.post-item-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:4px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.post-item-title a{color:#fff}
.post-item-title a:hover{color:#f6821f}
.post-item-preview{color:rgba(255,255,255,.5);font-size:13px;margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-item-meta{display:flex;gap:14px;font-size:12px;color:rgba(255,255,255,.4);flex-wrap:wrap;align-items:center}
.post-item-meta .author{color:rgba(255,255,255,.7);font-weight:500}
.post-item-stats{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:60px;padding:0 8px;border-left:1px solid rgba(255,255,255,.05);border-right:1px solid rgba(255,255,255,.05)}
.post-item-stats .num{font-size:18px;font-weight:700;color:#fff}
.post-item-stats .lbl{font-size:11px;color:rgba(255,255,255,.4)}

.tag{display:inline-block;padding:2px 8px;border-radius:4px;background:rgba(246,130,31,.12);color:#f6821f;font-size:11px;font-weight:600}
.pin{color:#f6821f;font-size:11px;font-weight:700;letter-spacing:.5px}
.flag{color:#e74c3c;font-size:11px;font-weight:600;display:inline-flex;align-items:center;gap:3px}

/* ── 头像 ──────────────────────────────────── */
.avatar{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,#444,#222);
  color:#fff;font-weight:700;font-size:14px;
  overflow:hidden;flex-shrink:0;
  user-select:none;
}
.avatar img{width:100%;height:100%;object-fit:cover}
.avatar-sm{width:28px;height:28px;font-size:12px}
.avatar-lg{width:64px;height:64px;font-size:22px}
.avatar-xl{width:96px;height:96px;font-size:32px}

/* ── 论坛首页头部 ──────────────────────────────────── */
.forum-header{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-bottom:18px;flex-wrap:wrap;
}
.forum-header h1{font-size:22px;font-weight:700;color:#fff}
.forum-tabs{display:flex;gap:4px;background:rgba(255,255,255,.04);padding:4px;border-radius:10px;border:1px solid rgba(255,255,255,.05)}
.forum-tabs a{padding:6px 14px;border-radius:6px;font-size:13px;font-weight:500;color:rgba(255,255,255,.6)}
.forum-tabs a:hover{color:#fff}
.forum-tabs a.active{background:rgba(246,130,31,.15);color:#f6821f}

.search-box{position:relative;width:280px}
.search-box input{padding-left:36px}
.search-box::before{content:"";position:absolute;left:12px;top:50%;transform:translateY(-50%);width:14px;height:14px;border:2px solid rgba(255,255,255,.3);border-radius:50%;pointer-events:none}

/* ── 侧栏 ──────────────────────────────────── */
.side-card{margin-bottom:14px}
.side-card h3{font-size:13px;font-weight:700;color:rgba(255,255,255,.5);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}
.side-stat{display:flex;justify-content:space-between;padding:6px 0;font-size:13px}
.side-stat .label{color:rgba(255,255,255,.5)}
.side-stat .value{color:#fff;font-weight:600}

/* ── 帖子详情 ──────────────────────────────────── */
.thread{padding:24px}
.thread h1{font-size:22px;font-weight:700;color:#fff;margin-bottom:12px;line-height:1.4}
.thread-meta{display:flex;align-items:center;gap:12px;color:rgba(255,255,255,.5);font-size:12px;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.05);flex-wrap:wrap}
.thread-meta .author{display:flex;align-items:center;gap:8px;color:#fff;font-weight:500;font-size:13px}
.thread-content{color:rgba(255,255,255,.85);line-height:1.8;white-space:pre-wrap;word-break:break-word;font-size:14px}
.thread-actions{display:flex;gap:8px;margin-top:18px;padding-top:14px;border-top:1px solid rgba(255,255,255,.05);align-items:center;flex-wrap:wrap}

.reply-list{margin-top:24px;display:flex;flex-direction:column;gap:10px}
.reply{
  display:flex;gap:12px;padding:14px;
  background:rgba(255,255,255,.02);
  border:1px solid rgba(255,255,255,.05);
  border-radius:10px;
}
.reply-body{flex:1;min-width:0}
.reply-head{display:flex;align-items:center;gap:8px;margin-bottom:6px;flex-wrap:wrap}
.reply-head .author{color:#fff;font-weight:600;font-size:13px}
.reply-head .time{color:rgba(255,255,255,.4);font-size:11px}
.reply-content{color:rgba(255,255,255,.8);line-height:1.7;white-space:pre-wrap;word-break:break-word;font-size:13px}

/* ── 表单页 ──────────────────────────────────── */
.form-page{max-width:480px;margin:60px auto;padding:0 20px}
.form-card{padding:32px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);border-radius:16px}
.form-card h1{font-size:22px;font-weight:700;color:#fff;margin-bottom:6px}
.form-card .sub{color:rgba(255,255,255,.5);font-size:13px;margin-bottom:24px}
.form-footer{text-align:center;margin-top:18px;font-size:13px;color:rgba(255,255,255,.5)}

/* ── 设置页 ──────────────────────────────────── */
.settings-layout{display:grid;grid-template-columns:200px 1fr;gap:24px}
@media(max-width:768px){.settings-layout{grid-template-columns:1fr}}
.settings-nav{display:flex;flex-direction:column;gap:2px;position:sticky;top:80px;height:fit-content}
.settings-nav button{text-align:left;padding:10px 14px;border-radius:8px;background:transparent;color:rgba(255,255,255,.65);font-size:13px;font-weight:500}
.settings-nav button:hover{background:rgba(255,255,255,.05);color:#fff}
.settings-nav button.active{background:rgba(246,130,31,.12);color:#f6821f}
.settings-section{display:none}
.settings-section.active{display:block}
.settings-section h2{font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}

.avatar-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-bottom:16px}
@media(max-width:480px){.avatar-grid{grid-template-columns:repeat(4,1fr)}}
.avatar-pick{
  width:100%;aspect-ratio:1;
  border-radius:12px;
  border:2px solid transparent;
  cursor:pointer;
  transition:all .2s;
  position:relative;
}
.avatar-pick:hover{transform:scale(1.05);border-color:rgba(255,255,255,.2)}
.avatar-pick.selected{border-color:#f6821f;box-shadow:0 0 0 3px rgba(246,130,31,.2)}

/* ── Toast ──────────────────────────────────── */
.toast{
  position:fixed;top:80px;left:50%;transform:translateX(-50%) translateY(-20px);
  padding:10px 20px;border-radius:8px;
  background:rgba(20,20,30,.95);border:1px solid rgba(255,255,255,.1);
  color:#fff;font-size:13px;font-weight:500;
  z-index:100;opacity:0;transition:all .3s;
  pointer-events:none;
  backdrop-filter:blur(10px);
  max-width:90vw;text-align:center;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.success{border-color:rgba(39,174,96,.4);background:rgba(39,174,96,.2)}
.toast.error{border-color:rgba(231,76,60,.4);background:rgba(231,76,60,.2)}

/* ── 模态框 ──────────────────────────────────── */
.modal-bg{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:90;
  display:none;align-items:center;justify-content:center;padding:20px;
  backdrop-filter:blur(4px);
}
.modal-bg.show{display:flex}
.modal{
  background:#15151f;border:1px solid rgba(255,255,255,.08);
  border-radius:16px;padding:24px;
  max-width:480px;width:100%;
}
.modal h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}

/* ── 举报按钮 ──────────────────────────────────── */
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:4px;
  padding:5px 10px;border-radius:6px;background:transparent;color:rgba(255,255,255,.5);
  font-size:12px;font-weight:500;transition:all .2s;
}
.icon-btn:hover{background:rgba(255,255,255,.06);color:#fff}

/* ── 加载/空状态 ──────────────────────────────────── */
.empty{
  padding:60px 20px;text-align:center;color:rgba(255,255,255,.4);font-size:14px;
}
.loading{padding:40px;text-align:center;color:rgba(255,255,255,.4);font-size:13px}

/* ── 警告框 ──────────────────────────────────── */
.notice{
  padding:12px 16px;border-radius:8px;margin-bottom:14px;
  background:rgba(246,130,31,.08);border:1px solid rgba(246,130,31,.2);
  color:#f4a55a;font-size:13px;line-height:1.5;
}
.notice-danger{background:rgba(231,76,60,.08);border-color:rgba(231,76,60,.2);color:#e57366}
.notice-info{background:rgba(52,152,219,.08);border-color:rgba(52,152,219,.2);color:#5dade2}

/* ── 分页 ──────────────────────────────────── */
.pager{display:flex;gap:6px;justify-content:center;margin-top:18px;flex-wrap:wrap}
.pager button{padding:6px 12px;border-radius:6px;background:rgba(255,255,255,.04);color:rgba(255,255,255,.6);font-size:13px;font-weight:500}
.pager button:hover{background:rgba(255,255,255,.08);color:#fff}
.pager button.active{background:rgba(246,130,31,.15);color:#f6821f}
.pager button:disabled{opacity:.4;cursor:not-allowed}

/* ── 管理员表格 ──────────────────────────────────── */
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th,.table td{padding:10px 12px;text-align:left;border-bottom:1px solid rgba(255,255,255,.05)}
.table th{color:rgba(255,255,255,.5);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.table tr:hover td{background:rgba(255,255,255,.02)}
.badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600}
.badge-admin{background:rgba(246,130,31,.15);color:#f6821f}
.badge-user{background:rgba(255,255,255,.06);color:rgba(255,255,255,.6)}
.badge-banned{background:rgba(231,76,60,.15);color:#e57366}
.badge-pending{background:rgba(241,196,15,.12);color:#f1c40f}
.badge-resolved{background:rgba(39,174,96,.12);color:#27ae60}
.badge-flagged{background:rgba(231,76,60,.12);color:#e57366}