:root{
  --bg1:#f6f8fd; --bg2:#eef2fb; --card:#ffffff; --ink:#1e2537; --muted:#7c88a1;
  --line:#e9edf6; --accent:#6366f1; --accent2:#8b5cf6;
  --up:#10b981; --down:#f43f5e; --now:#f59e0b; --futUp:#7c6ff0; --futDn:#b9aef6;
  --shadow:0 10px 34px rgba(26,38,72,.07); --shadow-sm:0 3px 12px rgba(26,38,72,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:'Inter',system-ui,sans-serif;color:var(--ink);
  background:radial-gradient(1200px 600px at 15% -10%,#eaf0ff 0%,transparent 60%),
             radial-gradient(1000px 500px at 100% 0%,#f3ecff 0%,transparent 55%),
             linear-gradient(180deg,var(--bg1),var(--bg2));
  min-height:100vh;-webkit-font-smoothing:antialiased;
}
.app{max-width:1360px;margin:0 auto;padding:22px 26px 40px}

/* top bar */
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.brand{display:flex;align-items:center;gap:14px}
.logo{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:22px;color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 8px 20px rgba(99,102,241,.35)}
.brand-txt h1{font-family:'Space Grotesk',sans-serif;font-size:23px;letter-spacing:.5px;font-weight:700}
.brand-txt span{font-size:12.5px;color:var(--muted);font-weight:500}
.top-right{display:flex;align-items:center;gap:14px;margin-left:auto}
.stamp{font-size:12.5px;color:var(--muted);background:#fff;border:1px solid var(--line);
  padding:8px 13px;border-radius:11px;box-shadow:var(--shadow-sm)}
.demo-bar{margin:0 0 14px;background:linear-gradient(90deg,#eef2ff,#faf5ff);border:1px solid #e0e7ff;
  border-radius:12px;padding:10px 14px;font-size:13px}
.demo-bar a{color:var(--accent);font-weight:700;text-decoration:none}
.refresh{display:flex;align-items:center;gap:8px;border:none;cursor:pointer;font-family:inherit;font-weight:600;
  font-size:13px;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2));
  padding:10px 16px;border-radius:11px;box-shadow:0 8px 20px rgba(99,102,241,.3);transition:transform .15s,filter .15s}
.refresh:hover{transform:translateY(-1px);filter:brightness(1.05)}
.refresh:active{transform:translateY(0)}
.spin{width:13px;height:13px;border-radius:50%;border:2px solid rgba(255,255,255,.5);border-top-color:#fff;display:none}
.refresh.loading .spin{display:inline-block;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* symbol tabs */
.tabs{display:flex;gap:9px;overflow-x:auto;padding:4px 2px 12px;margin-bottom:6px;scrollbar-width:thin}
.tabs::-webkit-scrollbar{height:6px}.tabs::-webkit-scrollbar-thumb{background:#dbe2f0;border-radius:6px}
.tab{white-space:nowrap;cursor:pointer;font-weight:600;font-size:13px;color:var(--muted);
  background:#fff;border:1px solid var(--line);padding:9px 16px;border-radius:11px;transition:all .16s;box-shadow:var(--shadow-sm)}
.tab:hover{color:var(--ink);border-color:#d6deee}
.tab.active{color:#fff;border-color:transparent;background:linear-gradient(135deg,var(--accent),var(--accent2));
  box-shadow:0 8px 18px rgba(99,102,241,.28)}

/* board */
.board{display:grid;grid-template-columns:1fr 320px;gap:20px}
@media(max-width:1040px){.board{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.chart-card{padding:20px 20px 16px;overflow:hidden}
.chart-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;flex-wrap:wrap;gap:12px}
.sym-block h2{font-family:'Space Grotesk',sans-serif;font-size:22px;font-weight:700;letter-spacing:.3px}
.sym-sub{font-size:12.5px;color:var(--muted);font-weight:500}
#chart{height:440px;width:100%;border-radius:14px;overflow:hidden}

.head-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.view-seg button.active{color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2))}

/* timeframe segmented */
.tf-seg{display:flex;background:#f1f4fb;border:1px solid var(--line);border-radius:12px;padding:4px}
.tf-seg button{border:none;background:transparent;cursor:pointer;font-family:inherit;font-weight:600;font-size:12.5px;
  color:var(--muted);padding:8px 15px;border-radius:9px;transition:all .15s}
.tf-seg button.active{color:var(--ink);background:#fff;box-shadow:var(--shadow-sm)}

/* legend */
.legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:12.5px;color:var(--muted);font-weight:500}
.legend .dot{display:inline-block;width:11px;height:11px;border-radius:4px;margin-right:6px;vertical-align:-1px}
.dot.hist{background:var(--up)} .dot.now{background:var(--now)} .dot.fut{background:var(--futUp)}
.dot.band{background:rgba(124,111,240,.28)}

/* side panel */
.side{padding:22px}
.side h3{font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.2px}
.stat{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line)}
.stat label{font-size:12.5px;color:var(--muted);font-weight:500}
.stat b{font-size:14.5px;font-weight:700;font-variant-numeric:tabular-nums}
.stat.dir b{padding:4px 11px;border-radius:9px;font-size:12.5px}
.bias-up{background:rgba(16,185,129,.12);color:#059669} .bias-dn{background:rgba(244,63,94,.12);color:#e11d48}
.disclaimer{margin-top:16px;font-size:11.5px;color:#aab3c6;line-height:1.5}
.foot{margin-top:22px;text-align:center;font-size:11.5px;color:#aab3c6}

/* live price pulse */
.live-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#cbd5e1;margin-left:6px;vertical-align:1px;transition:background .3s}
.live-dot.on{background:#10b981;box-shadow:0 0 0 4px rgba(16,185,129,.15)}

/* community chat */
.chat-card{margin-top:20px;padding:20px 22px}
.chat-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.chat-head h3{font-size:14px;font-weight:700}
.chat-note{font-size:11.5px;color:var(--muted)}
.chat-list{height:280px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding:4px 6px 4px 2px;
  scrollbar-width:thin;border:1px solid var(--line);border-radius:12px;background:#fbfcff;padding:10px}
.chat-empty{font-size:12.5px;color:#aab3c6;padding:10px 0}
.chat-msg{background:#f7f9fe;border:1px solid var(--line);border-radius:12px;padding:10px 13px}
.chat-meta{display:flex;justify-content:space-between;margin-bottom:4px}
.chat-meta b{font-size:12.5px}
.chat-meta span{font-size:11px;color:#aab3c6}
.chat-body{font-size:13px;line-height:1.45;word-wrap:break-word}
.emoji-row{display:flex;flex-wrap:wrap;gap:4px;margin-top:12px}
.emoji-row span{cursor:pointer;font-size:17px;padding:5px 7px;border-radius:9px;transition:all .12s;user-select:none}
.emoji-row span:hover{background:#eef1fb;transform:scale(1.18)}
.hidden{display:none !important}
.chat-join{display:flex;gap:10px;margin-top:12px}
.chat-join input{flex:1;max-width:280px;border:1px solid var(--line);border-radius:11px;padding:10px 13px;
  font-family:inherit;font-size:13px;background:#fff;outline:none}
.chat-join input:focus{border-color:var(--accent)}
.chat-join button{border:none;cursor:pointer;font-family:inherit;font-weight:600;font-size:13px;color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--accent2));padding:10px 22px;border-radius:11px;
  box-shadow:0 6px 16px rgba(99,102,241,.25)}
.chat-form{margin-top:6px}
.chat-input-row{display:flex;gap:10px;align-items:center;margin-top:8px;flex-wrap:wrap}
.chat-me{font-size:12px;font-weight:700;color:var(--accent);background:#eef1fe;border:1px solid #dfe4fc;
  padding:8px 13px;border-radius:11px;white-space:nowrap}
.chat-input-row input{flex:1;min-width:180px;border:1px solid var(--line);border-radius:11px;padding:10px 13px;
  font-family:inherit;font-size:13px;background:#fff;outline:none}
.chat-input-row input:focus{border-color:var(--accent)}
.chat-input-row button{border:none;cursor:pointer;font-family:inherit;font-weight:600;font-size:13px;color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--accent2));padding:10px 22px;border-radius:11px;
  box-shadow:0 6px 16px rgba(99,102,241,.25)}
.chat-input-row button:hover{filter:brightness(1.06)}

/* guidance card */
.guide-card{margin-top:20px;padding:20px 22px}
.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;align-items:stretch}
@media(max-width:1100px){.guide-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.guide-grid{grid-template-columns:1fr}}
.guide-tile{display:flex;flex-direction:column;gap:10px;background:#f9fafe;border:1px solid var(--line);
  border-radius:14px;padding:16px;transition:transform .15s,box-shadow .15s}
.guide-tile:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.guide-tile-head{display:flex;align-items:center;gap:10px}
.guide-tile-head b{font-size:13px;color:var(--ink)}
.guide-tile p{font-size:12px;line-height:1.6;color:var(--muted);margin:0}
.gicon{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;font-size:14px;font-weight:800;
  color:#fff;flex:none}
.g-green{background:linear-gradient(135deg,#10b981,#059669)}
.g-violet{background:linear-gradient(135deg,#8b5cf6,#6a4c93)}
.g-blue{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}
.g-amber{background:linear-gradient(135deg,#f59e0b,#d97706)}
.guide-foot{text-align:center;margin-top:14px;font-size:11px;color:#aab3c6}