*{margin:0;padding:0;box-sizing:border-box}
body{background:#1a1a2e;display:flex;justify-content:center;align-items:center;min-height:100vh;font-family:'Malgun Gothic',sans-serif;overflow-x:hidden;user-select:none;color:#c8b89a}
#container{position:relative;display:flex;flex-direction:column;align-items:center;gap:8px;padding:6px 0 16px;width:100%;max-width:640px}
#header{color:#d4a574;font-size:clamp(20px,4vw,28px);font-weight:bold;letter-spacing:6px;text-shadow:0 2px 8px rgba(212,165,116,0.3)}
#boardWrap{position:relative;width:100%;display:flex;justify-content:center}
canvas#board{border-radius:8px;box-shadow:0 8px 32px rgba(0,0,0,0.5),0 0 60px rgba(139,90,43,0.15);cursor:pointer;max-width:100%;height:auto}
#timerBar{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:640px;padding:0 8px;gap:8px}
.timer-wrap{display:flex;align-items:center;gap:6px;font-size:14px;letter-spacing:1px}
.timer-wrap canvas{border-radius:50%}
.timer-label{font-size:12px;opacity:0.7}
#statusBar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:center;font-size:clamp(12px,2.5vw,16px)}
#status{letter-spacing:2px;min-height:20px;text-align:center}
.ctrl-btn{background:rgba(200,184,154,0.15);color:#c8b89a;border:1px solid rgba(200,184,154,0.3);padding:4px 12px;border-radius:6px;cursor:pointer;font-size:12px;font-family:inherit;letter-spacing:1px;transition:background 0.2s}
.ctrl-btn:hover{background:rgba(200,184,154,0.3)}
.ctrl-btn:disabled{opacity:0.3;cursor:default}
#actionBar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:2px}
.seal-btn{position:relative;width:60px;height:60px;border:none;cursor:pointer;background:none;transition:transform 0.15s}
.seal-btn:hover:not(:disabled){transform:scale(1.08)}
.seal-btn:active:not(:disabled){transform:scale(0.95)}
.seal-btn:disabled{cursor:default;filter:saturate(0.3)}
.seal-btn canvas{pointer-events:none}

/* 오버레이 */
.overlay{position:fixed;inset:0;background:rgba(10,10,25,0.92);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;z-index:200;animation:fadeIn 0.4s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.overlay h1{color:#d4a574;font-size:clamp(28px,6vw,42px);letter-spacing:8px;text-shadow:0 0 30px rgba(212,165,116,0.4)}
.overlay h2{color:#d4a574;font-size:clamp(22px,5vw,32px);letter-spacing:6px}
.overlay p,.overlay label{color:#a0907a;font-size:clamp(13px,2.5vw,15px);letter-spacing:2px}
.opt-group{display:flex;flex-direction:column;align-items:center;gap:8px}
.opt-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.opt-btn{background:rgba(90,61,30,0.5);color:#d4ad6a;border:2px solid #5a3d1e;padding:10px 18px;border-radius:8px;font-size:clamp(13px,2.5vw,16px);font-family:inherit;font-weight:bold;letter-spacing:2px;cursor:pointer;transition:all 0.2s;min-width:70px;text-align:center}
.opt-btn:hover{border-color:#a07840;background:rgba(139,98,52,0.5)}
.opt-btn.selected{border-color:#ffd700;background:rgba(139,98,52,0.7);color:#fff;box-shadow:0 0 12px rgba(255,215,0,0.3)}
.start-big{background:linear-gradient(135deg,#5a3d1e 0%,#8b6234 50%,#5a3d1e 100%);color:#f0dcc0;border:2px solid #a07840;padding:14px 50px;border-radius:10px;font-size:clamp(16px,3vw,22px);font-family:inherit;font-weight:bold;letter-spacing:4px;cursor:pointer;transition:all 0.2s;box-shadow:0 4px 16px rgba(0,0,0,0.4);margin-top:10px}
.start-big:hover{background:linear-gradient(135deg,#6b4e2e 0%,#a07840 50%,#6b4e2e 100%);transform:translateY(-2px)}

/* 알림 / 팝업 */
#alert{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(20,20,40,0.95);color:#ffd700;font-size:clamp(24px,5vw,36px);font-weight:bold;padding:20px 40px;border-radius:12px;border:2px solid #ffd700;letter-spacing:4px;pointer-events:none;opacity:0;transition:opacity 0.3s;z-index:100;text-shadow:0 0 20px rgba(255,215,0,0.5);text-align:center}
#alert.show{opacity:1}
#resultPopup{position:fixed;inset:0;background:rgba(10,10,25,0.85);display:none;flex-direction:column;align-items:center;justify-content:center;gap:20px;z-index:300}
#resultPopup.show{display:flex}
#resultPopup h2{font-size:clamp(24px,5vw,32px);letter-spacing:6px;text-shadow:0 0 20px currentColor}
#resultPopup p{font-size:clamp(13px,2.5vw,16px);letter-spacing:2px}
.popup-btn{background:linear-gradient(135deg,#3a2510 0%,#6b4226 50%,#3a2510 100%);color:#f0dcc0;border:2px solid #a07840;padding:12px 32px;border-radius:8px;font-size:clamp(14px,2.5vw,17px);font-family:inherit;font-weight:bold;letter-spacing:2px;cursor:pointer;transition:all 0.2s}
.popup-btn:hover{background:linear-gradient(135deg,#4a3520 0%,#8b5a2b 50%,#4a3520 100%);transform:translateY(-1px)}
#gameOverOverlay{position:fixed;inset:0;background:rgba(10,10,25,0.9);display:none;flex-direction:column;align-items:center;justify-content:center;gap:20px;z-index:400}
#gameOverOverlay.show{display:flex}
#gameOverOverlay h1{font-size:clamp(28px,6vw,42px);letter-spacing:8px;text-shadow:0 0 30px currentColor}
#gameOverOverlay p{font-size:clamp(14px,3vw,18px);letter-spacing:2px}

/* ═══ 모드 선택 화면 ═══ */
#modeSelectOverlay .mode-btns{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;margin-top:10px}
#modeSelectOverlay .mode-btn{background:linear-gradient(135deg,#5a3d1e 0%,#8b6234 50%,#5a3d1e 100%);color:#f0dcc0;border:2px solid #a07840;padding:24px 36px;border-radius:12px;font-size:clamp(16px,3vw,22px);font-family:inherit;font-weight:bold;letter-spacing:4px;cursor:pointer;transition:all 0.2s;box-shadow:0 4px 16px rgba(0,0,0,0.4);min-width:180px;text-align:center}
#modeSelectOverlay .mode-btn:hover{background:linear-gradient(135deg,#6b4e2e 0%,#a07840 50%,#6b4e2e 100%);transform:translateY(-2px);box-shadow:0 6px 24px rgba(0,0,0,0.5)}
#modeSelectOverlay .mode-btn .mode-icon{font-size:clamp(28px,5vw,40px);display:block;margin-bottom:8px}
#modeSelectOverlay .mode-btn .mode-desc{font-size:clamp(11px,2vw,13px);font-weight:normal;letter-spacing:1px;opacity:0.7;margin-top:4px;display:block}

/* ═══ 로비 화면 ═══ */
#lobbyOverlay{z-index:201}
#lobbyOverlay .lobby-box{background:rgba(30,25,40,0.95);border:2px solid rgba(200,184,154,0.3);border-radius:16px;padding:32px 28px;max-width:400px;width:90%;display:flex;flex-direction:column;align-items:center;gap:16px}
#lobbyOverlay .lobby-section{width:100%;display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px 0;border-bottom:1px solid rgba(200,184,154,0.15)}
#lobbyOverlay .lobby-section:last-child{border-bottom:none;padding-bottom:0}
#lobbyOverlay .lobby-title{font-size:clamp(14px,3vw,18px);color:#d4a574;letter-spacing:3px;font-weight:bold}
#lobbyOverlay .room-code-display{font-size:clamp(28px,6vw,40px);color:#ffd700;letter-spacing:12px;font-weight:bold;text-shadow:0 0 20px rgba(255,215,0,0.3);font-family:'Courier New',monospace}
#lobbyOverlay .room-code-input{background:rgba(200,184,154,0.1);border:2px solid rgba(200,184,154,0.3);color:#f0dcc0;padding:10px 16px;border-radius:8px;font-size:clamp(18px,4vw,24px);font-family:'Courier New',monospace;letter-spacing:8px;text-align:center;width:200px;outline:none;transition:border-color 0.2s}
#lobbyOverlay .room-code-input:focus{border-color:#d4a574}
#lobbyOverlay .room-code-input::placeholder{color:rgba(200,184,154,0.3);letter-spacing:4px;font-size:14px}
#lobbyOverlay .lobby-btn{background:linear-gradient(135deg,#5a3d1e 0%,#8b6234 50%,#5a3d1e 100%);color:#f0dcc0;border:2px solid #a07840;padding:10px 24px;border-radius:8px;font-size:clamp(13px,2.5vw,16px);font-family:inherit;font-weight:bold;letter-spacing:2px;cursor:pointer;transition:all 0.2s}
#lobbyOverlay .lobby-btn:hover{background:linear-gradient(135deg,#6b4e2e 0%,#a07840 50%,#6b4e2e 100%);transform:translateY(-1px)}
#lobbyOverlay .lobby-btn:disabled{opacity:0.4;cursor:default;transform:none}
#lobbyOverlay .lobby-btn-row{display:flex;gap:10px;align-items:center}
#lobbyOverlay .copy-btn{background:rgba(200,184,154,0.15);color:#c8b89a;border:1px solid rgba(200,184,154,0.3);padding:6px 12px;border-radius:6px;cursor:pointer;font-size:12px;font-family:inherit;letter-spacing:1px;transition:all 0.2s}
#lobbyOverlay .copy-btn:hover{background:rgba(200,184,154,0.3)}
#lobbyOverlay .lobby-back{background:none;border:1px solid rgba(200,184,154,0.3);color:rgba(200,184,154,0.6);padding:8px 20px;border-radius:8px;font-size:13px;font-family:inherit;cursor:pointer;transition:all 0.2s;letter-spacing:1px;margin-top:4px}
#lobbyOverlay .lobby-back:hover{border-color:rgba(200,184,154,0.5);color:#c8b89a}
.lobby-waiting{color:#a0907a;font-size:clamp(13px,2.5vw,15px);letter-spacing:2px;text-align:center}
.lobby-waiting .dots::after{content:'';animation:lobbyDots 1.5s infinite}
@keyframes lobbyDots{0%{content:''}33%{content:'.'}66%{content:'..'}100%{content:'...'}}
.lobby-error{color:#ff6666;font-size:13px;letter-spacing:1px;min-height:18px;text-align:center}

/* ═══ 멀티플레이어 오버레이 ═══ */
#mpDisconnectOverlay{position:fixed;inset:0;background:rgba(10,10,25,0.92);display:none;flex-direction:column;align-items:center;justify-content:center;gap:16px;z-index:500}
#mpDisconnectOverlay.show{display:flex}
#mpDisconnectOverlay h2{color:#ff6666;font-size:clamp(18px,4vw,24px);letter-spacing:4px}
#mpDisconnectOverlay p{color:#a0907a;font-size:clamp(13px,2.5vw,16px);letter-spacing:2px}
#mpDisconnectOverlay .countdown{color:#ffd700;font-size:clamp(28px,6vw,40px);font-weight:bold}
#spectatorBanner{position:fixed;top:0;left:0;right:0;background:rgba(255,200,0,0.15);color:#ffd700;text-align:center;padding:8px;font-size:14px;letter-spacing:3px;font-weight:bold;z-index:150;display:none;border-bottom:1px solid rgba(255,200,0,0.3)}
#spectatorBanner.show{display:block}