:root{color-scheme:dark;--bg:#080f20;--panel:#15203bcc;--line:#ffffff23;--text:#eef4ff;--muted:#9caeca;--accent:#3dddc3}*{box-sizing:border-box}body{margin:0;font:15px system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--text);background:radial-gradient(ellipse at 15% 0%,#193763 0%,transparent 42%),radial-gradient(ellipse at 100% 80%,#173f3c 0%,transparent 45%),var(--bg);min-height:100dvh}header{display:flex;align-items:center;gap:18px;padding:14px clamp(14px,4vw,52px);border-bottom:1px solid var(--line);flex-wrap:wrap}.brand{color:white;text-decoration:none;font-size:20px;font-weight:800;letter-spacing:.05em}.brand b{color:var(--accent)}.pill{border:1px solid #3dddc366;border-radius:30px;padding:5px 10px;font-size:12px;color:var(--accent)}.link{color:var(--muted);text-decoration:none}main{max-width:1500px;margin:auto;padding:18px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:0 16px 50px #0003;backdrop-filter:blur(20px)}.lobby{max-width:540px;margin:8vh auto;padding:36px;text-align:center}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--accent);font-weight:700}h1{font-size:clamp(28px,5vw,46px);margin:12px 0}.lobby p{color:var(--muted);line-height:1.6}.lobby input{display:block;width:100%;margin:16px 0}input,button{font:inherit;border-radius:12px;border:1px solid var(--line);padding:12px 15px;background:#0c1831;color:var(--text)}button{cursor:pointer;font-weight:700;white-space:nowrap}button:hover{border-color:var(--accent)}button:disabled{opacity:.45;cursor:not-allowed}.primary{background:linear-gradient(135deg,#20b7ac,#2c81be);border:none;width:100%}.join{display:flex;gap:8px;margin-top:20px}.join input{margin:0;min-width:0}.lobby small{display:block;color:var(--muted);margin-top:18px}.hidden{display:none!important}.bar,.foot{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:15px 18px;flex-wrap:wrap}.status{font-size:20px;font-weight:750;margin:6px 0}.players{display:flex;gap:15px;color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:7px}.actions button{padding:9px 12px}#boardWrap{position:relative;margin:12px 0;background:#e9d3a3;border:5px solid #c49c65;border-radius:12px;overflow:hidden;height:calc(100dvh - 242px);min-height:350px;touch-action:none}canvas{width:100%;height:100%;display:block;touch-action:none;cursor:crosshair}.tip{pointer-events:none;position:absolute;bottom:10px;left:50%;transform:translateX(-50%);background:#0a1327cf;color:#fff;border-radius:50px;padding:7px 13px;font-size:12px;white-space:nowrap;max-width:95%;overflow:hidden;text-overflow:ellipsis}.foot{color:var(--muted)}#toast{position:fixed;bottom:32px;left:50%;transform:translateX(-50%);border-radius:12px;padding:12px 18px;background:#082c37;color:white;box-shadow:0 8px 24px #0007;display:none;max-width:90vw;z-index:10}@media(max-width:700px){header{gap:10px;padding:12px}.link{font-size:12px}.brand{font-size:17px}main{padding:9px}.lobby{padding:23px;margin:6vh auto}.bar{padding:12px}.status{font-size:17px}.actions{width:100%}.actions button{font-size:12px;flex:1;padding:9px 6px}#boardWrap{height:calc(100dvh - 290px);min-height:320px}}

/* MY SPACE 5.3: tham gia phòng tự động */
.entry-overlay{position:fixed;inset:0;z-index:90;background:rgba(4,10,23,.78);display:flex;align-items:center;justify-content:center;padding:16px;backdrop-filter:blur(5px)}
.entry-card{width:min(100%,440px);background:#182542;border:1px solid #54708a;border-radius:20px;padding:26px;box-shadow:0 24px 90px #000a;color:#f4f8ff}
.entry-card h2{font-size:23px;margin:6px 0 10px}.entry-card p{color:#cbd8e9;line-height:1.6}.entry-card label{display:block;margin-top:14px;font-weight:600}.entry-card input{width:100%;margin:8px 0 14px}.entry-buttons{display:grid;gap:9px}.entry-buttons .primary{width:100%}.entry-buttons button{white-space:normal}.entry-card .hint{color:#94a9c0;font-size:12px;margin-bottom:0}
@media(max-width:640px){.entry-card{padding:20px}}