:root{
  --bg: #060b14;
  --bg-2: #0a1220;
  --panel: rgba(14, 24, 39, 0.72);
  --panel-solid: #101c2e;
  --border: #223349;
  --border-bright: #3a5670;
  --ice: #7fe0f0;
  --ice-dim: #3f7d8c;
  --frost: #eef6fa;
  --muted: #7d93aa;
  --danger: #e2685a;
  --success: #6fcf97;
  --font-display: 'Cinzel', serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

*{ box-sizing: border-box; }
html,body{ margin:0; padding:0; height:100%; }

body{
  background: radial-gradient(ellipse at 50% -10%, #0f2036 0%, var(--bg) 55%);
  color: var(--frost);
  font-family: var(--font-body);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── 배경 오로라: 한 번의 느린 움직임만 ───────────────────────── */
.aurora{
  position: fixed;
  inset: -20% -10% auto -10%;
  height: 70vh;
  background:
    radial-gradient(40% 60% at 20% 10%, rgba(127,224,240,0.14), transparent 60%),
    radial-gradient(35% 50% at 75% 5%, rgba(120,150,230,0.10), transparent 60%);
  filter: blur(40px);
  animation: drift 22s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}
@keyframes drift{
  from{ transform: translateX(-2%) translateY(0); }
  to{ transform: translateX(3%) translateY(2%); }
}

.frost-grain{
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 3px 3px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* ── 상단바 ─────────────────────────────────────────────────── */
.topbar{
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 56px 0;
}
.brand{ display: flex; align-items: center; gap: 10px; color: var(--ice); }
.brand-mark{ width: 26px; height: 26px; }
.brand-name{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--frost);
}
.realm-status{
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; color: var(--muted);
  border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 999px;
  background: rgba(10,18,30,0.5);
}
.dot{
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 0 rgba(111,207,151,0.5);
}
.dot.online{ background: var(--success); box-shadow: 0 0 8px 1px rgba(111,207,151,0.6); }
.dot.offline{ background: var(--danger); box-shadow: 0 0 8px 1px rgba(226,104,90,0.5); }

/* ── 히어로 ─────────────────────────────────────────────────── */
.hero{
  position: relative;
  z-index: 2;
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 32px 60px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.eyebrow{
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--ice);
  margin: 0 0 18px;
}
.hero-copy h1{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2.5rem;
  line-height: 1.32;
  margin: 0 0 20px;
  color: var(--frost);
}
.hero-copy .sub{
  color: var(--muted);
  font-size: 1rem;
  max-width: 420px;
  margin: 0;
}

/* ── 패널 ──────────────────────────────────────────────────── */
.panel{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px;
  backdrop-filter: blur(14px);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6);
}

.tabs{
  display: flex;
  gap: 4px;
  margin-bottom: 4px;
}
.tab{
  flex: 1;
  background: transparent;
  border: none;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 12px 10px;
  border-radius: 10px;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.tab:hover{ color: var(--frost); }
.tab.active{
  background: rgba(127,224,240,0.10);
  color: var(--ice);
}

.tab-pane{ display: none; padding: 22px 18px 20px; }
.tab-pane.active{ display: block; }

.field{
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 0.82rem;
  color: var(--muted);
}
.field input{
  background: rgba(6,11,20,0.6);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 12px;
  color: var(--frost);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.field input:focus{
  border-color: var(--ice-dim);
  box-shadow: 0 0 0 3px rgba(127,224,240,0.12);
}

.submit-btn{
  width: 100%;
  margin-top: 6px;
  padding: 13px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-bright);
  background: linear-gradient(180deg, rgba(127,224,240,0.16), rgba(127,224,240,0.06));
  color: var(--frost);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.94rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform .1s, background .15s;
}
.submit-btn:hover{ background: linear-gradient(180deg, rgba(127,224,240,0.24), rgba(127,224,240,0.08)); }
.submit-btn:active{ transform: translateY(1px); }
.submit-btn:disabled{ opacity: 0.6; cursor: default; }

.msg{
  min-height: 20px;
  font-size: 0.85rem;
  margin: 12px 2px 0;
  color: var(--muted);
}
.msg.success{ color: var(--success); }
.msg.error{ color: var(--danger); }

.howto-list{
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 0.92rem;
}
.howto-list li{ margin-bottom: 12px; }
.howto-list code{
  background: rgba(127,224,240,0.10);
  color: var(--ice);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}

.footnote{
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  padding: 20px 20px 40px;
}

@media (max-width: 860px){
  .topbar{ padding: 22px 22px 0; }
  .hero{ grid-template-columns: 1fr; padding: 48px 22px 40px; gap: 36px; }
  .hero-copy h1{ font-size: 2rem; }
}

/* ── 접속 정보 (접속 방법 탭) ─────────────────────────────── */
.connect-box{
  background: rgba(127,224,240,0.06);
  border: 1px solid var(--ice-dim);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 18px;
}
.connect-label{
  display:block; font-size: 11.5px; color: var(--ice);
  letter-spacing: .06em; margin-bottom: 8px;
}
.connect-row{ display:flex; align-items:center; gap:8px; }
.connect-row code{
  flex:1; min-width:0;
  background: rgba(0,0,0,.42); border:1px solid var(--border);
  border-radius: 7px; padding: 9px 11px;
  font-family: ui-monospace, Consolas, monospace; font-size: 13px;
  color: var(--frost); overflow-x:auto; white-space: nowrap;
}
.copy-btn{
  flex:none; background: transparent; border:1px solid var(--border-bright);
  color: var(--ice); border-radius:7px; padding: 9px 14px;
  font: inherit; font-size: 12.5px; cursor:pointer;
}
.copy-btn:hover{ background: rgba(127,224,240,.12); }
.connect-hint{ margin: 10px 0 0; font-size: 12px; color: var(--muted); }
.howto-note{
  margin: 14px 0 0; font-size: 12.5px; color: var(--muted); line-height:1.7;
}
.howto-note a{ color: var(--ice); }