:root {
  --bg: #0e0b1a;
  --panel: #17132b;
  --panel-2: #1f1a3a;
  --ink: #ece8ff;
  --muted: #9a92c4;
  --accent: #b98cff;
  --accent-2: #6ee7ff;
  --gold: #ffd479;
  --ok: #4ade80;
  --bad: #ff7a90;
  --border: #2c2550;
  --shadow: 0 10px 40px rgba(0,0,0,.45);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 70% -10%, #2a1f52 0%, var(--bg) 60%);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
a { color: var(--accent-2); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 24px 20px 60px; }
header.top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; margin-bottom: 20px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .sigil { font-size: 30px; filter: drop-shadow(0 0 12px var(--accent)); }
.brand h1 { font-size: 20px; margin: 0; letter-spacing: .3px; }
.brand p { margin: 0; color: var(--muted); font-size: 12.5px; }
.pill { font-size: 12px; color: var(--muted); border: 1px solid var(--border); padding: 4px 10px; border-radius: 999px; }
.pill.mock { color: var(--gold); border-color: #4a3d1a; background: #241d0e; }

.layout { display: grid; grid-template-columns: 260px 1fr; gap: 20px; }
@media (max-width: 820px) { .layout { grid-template-columns: 1fr; } }

.panel { background: linear-gradient(180deg, var(--panel), var(--panel-2)); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow); }
.panel .hd { padding: 12px 14px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .6px; }
.panel .bd { padding: 14px; }

/* level list */
.levels { display: flex; flex-direction: column; gap: 8px; }
.lvl { text-align: left; width: 100%; cursor: pointer; background: var(--panel-2); border: 1px solid var(--border); color: var(--ink); border-radius: 10px; padding: 10px 12px; display: flex; align-items: center; gap: 10px; transition: .15s; }
.lvl:hover:not(:disabled) { border-color: var(--accent); transform: translateX(2px); }
.lvl.active { border-color: var(--accent); background: #241c47; }
.lvl:disabled { opacity: .45; cursor: not-allowed; }
.lvl .ic { width: 20px; text-align: center; }
.lvl .nm { flex: 1; font-size: 13.5px; }
.lvl .badge { font-size: 11px; color: var(--ok); }

/* chat */
.chat { display: flex; flex-direction: column; height: 560px; }
.msgs { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 78%; padding: 10px 13px; border-radius: 14px; white-space: pre-wrap; word-wrap: break-word; }
.msg.user { align-self: flex-end; background: linear-gradient(135deg, #3a2b6e, #2b2356); border: 1px solid var(--border); }
.msg.bot { align-self: flex-start; background: #120f24; border: 1px solid var(--border); }
.msg.system { align-self: center; color: var(--muted); font-size: 12.5px; font-style: italic; background: none; }
.msg.blocked { border-color: #5a2740; background: #2a1420; }
.composer { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); }
.composer input { flex: 1; }

.guessbar { display: flex; gap: 8px; align-items: center; padding: 12px; border-top: 1px solid var(--border); background: #120f24; border-radius: 0 0 14px 14px; }
.guessbar .lbl { font-size: 12px; color: var(--gold); white-space: nowrap; }
.guessbar input { flex: 1; }

input, textarea, select { background: #0f0c20; color: var(--ink); border: 1px solid var(--border); border-radius: 9px; padding: 9px 11px; font: inherit; outline: none; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
button.btn { cursor: pointer; border: none; border-radius: 9px; padding: 9px 15px; font: inherit; font-weight: 600; background: linear-gradient(135deg, var(--accent), #8a5cff); color: #120a24; transition: .15s; }
button.btn:hover { filter: brightness(1.08); }
button.btn.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
button.btn.ghost:hover { color: var(--ink); border-color: var(--accent); }
button.btn.gold { background: linear-gradient(135deg, var(--gold), #ffb347); }
button:disabled { opacity: .5; cursor: not-allowed; }

.hint { color: var(--muted); font-size: 12.5px; margin: 8px 2px 0; }
.toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); padding: 12px 20px; border-radius: 12px; box-shadow: var(--shadow); font-weight: 600; z-index: 50; opacity: 0; transition: opacity .25s, transform .25s; pointer-events: none; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }
.toast.ok { background: #14351f; color: var(--ok); border: 1px solid #235a35; }
.toast.bad { background: #34141d; color: var(--bad); border: 1px solid #5a2333; }
.solved-banner { text-align: center; padding: 10px; color: var(--ok); font-weight: 600; }
.dots::after { content: '…'; animation: dots 1.2s steps(4, end) infinite; }
@keyframes dots { 0% { content: ''; } 25% { content: '.'; } 50% { content: '..'; } 75% { content: '...'; } }
.footer-note { text-align: center; color: var(--muted); font-size: 12px; margin-top: 22px; }
.cursor { animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }