:root{ --bg:#0f1424; --card:#ffffff; --muted:#6b7280; --btn:#111827; --btn2:#374151; }

body{
  margin:0; font-family: system-ui, Arial;
  background: linear-gradient(135deg,#0b1020,#1b2a4a);
  min-height:100vh; color:#0b1020;
  padding: 16px;
}

.hidden{ display:none !important; }

.card{
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.18);
}

#loginBox{ max-width:420px; margin: 80px auto; }

label{ display:block; margin-top:10px; font-weight:700; }
input, select{
  width:100%; padding:10px 12px; border-radius:12px;
  border:1px solid rgba(0,0,0,0.15);
  outline:none; margin-top:6px;
  background:#fff;
}

.btn{
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,0.2);
  background: rgba(17,24,39,0.92);
  color:#fff;
  cursor:pointer;
}
.btn.secondary{ background: rgba(55,65,81,0.92); }
.btn.small{ padding: 8px 10px; margin-top: 0; }

.muted{ color: var(--muted); margin-top:6px; }
.small{ font-size: 12px; }

.topbar{
  display:flex; justify-content:space-between; align-items:center;
  gap: 10px;
  max-width: 980px;
  margin: 12px auto;
  color:#fff;
}
.topbar h2{ color:#fff; }
.topbar .muted{ color: rgba(255,255,255,0.75); }

.grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  max-width: 980px;
  margin: 0 auto;
}

@media (max-width: 900px){
  .grid{ grid-template-columns: 1fr; }
}

.row{ display:flex; gap:10px; flex-wrap:wrap; }

.preview{
  height: 320px;
  border-radius: 16px;
  overflow:hidden;
  border:1px solid rgba(0,0,0,0.1);
  background:#0b1020;
  display:flex;
  align-items:center;
  justify-content:center;
}
.preview-inner{
  width:100%; height:100%;
  display:flex; align-items:center; justify-content:center;
  color: rgba(255,255,255,0.85);
}

/* ===== Tabs ===== */
.tabs{ display:flex; gap:10px; flex-wrap:wrap; margin:12px 0; }
.tabbtn{
  padding:10px 12px;
  border-radius:12px;
  border:1px solid #ccc;
  background:#f7f7f7;
  cursor:pointer;
  font-weight:700;
}
.tabbtn.active{
  background:#ffffff;
  border-color:#888;
  box-shadow:0 6px 14px rgba(0,0,0,0.08);
}
.noticeCard{
  border:1px solid #ddd;
  border-radius:14px;
  padding:12px;
  background: linear-gradient(135deg, rgba(255,99,71,0.12), rgba(255,255,255,0.95));
}
.noticePreview{
  margin-top:10px;
  padding:10px;
  border-radius:12px;
  border:2px dashed rgba(255,99,71,0.5);
  background: rgba(255,255,255,0.75);
  white-space: pre-wrap;
  font-weight:800;
}
.noticeMeta{ margin-top:6px; font-size:12px; opacity:.75; }