:root{--bg: #0F172A;--text: #F8FAFC;--border: #334155;--correct: #6AAA64;--present: #C9B458;--absent: #475569;--key-bg: #64748B;--modal-bg: #1E293B;--accent: #94A3B8;--hover: #475569;--success: #E2E8F0;--error: #64748B}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:linear-gradient(180deg,#0f172a,#1e293b);background-attachment:fixed;color:var(--text);min-height:100vh;display:flex;flex-direction:column;align-items:center;overflow-x:hidden;margin:0;padding:0}#app{width:100%;max-width:500px;display:flex;flex-direction:column;flex:1;padding:0 16px}header{display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--border);padding:16px 0;position:relative}.logo-container{display:flex;align-items:center;gap:2px;text-decoration:none;color:var(--text);cursor:pointer;transition:opacity .2s}.logo-container:hover{opacity:.8}.logo{font-size:32px;font-weight:700;font-family:Times New Roman,serif;font-style:italic}h1{font-size:32px;font-weight:700;letter-spacing:.05em}.help-btn{position:absolute;right:0;background:none;border:none;color:var(--text);font-size:24px;cursor:pointer;padding:8px;width:auto;display:flex;align-items:center;justify-content:center}.help-btn:hover{opacity:.7}.auth-btn{position:absolute;left:0;background:none;border:none;color:var(--text);font-size:20px;cursor:pointer;padding:8px;width:auto;display:flex;align-items:center;justify-content:center}.auth-btn:hover{opacity:.7}.auth-btn svg{display:block}.hint-btn{background:var(--present);margin-top:8px;display:flex;align-items:center;justify-content:center;gap:8px}.hint-btn svg{flex-shrink:0}.hint-btn:disabled{background:var(--absent)}main{flex:1;display:flex;flex-direction:column;padding:16px 0;max-width:100%}#game-board{display:flex;flex-direction:column;gap:5px;margin-bottom:20px;width:100%;max-width:100%;overflow:hidden}.guess-row{display:grid;grid-template-columns:repeat(7,1fr);gap:5px;width:100%;max-width:100%}.cell{aspect-ratio:1;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:clamp(14px,3.5vw,24px);font-weight:700;transition:all .3s ease;border-radius:2px;overflow:hidden;word-break:break-all;min-width:0;padding:2px;line-height:1}.cell.revealed{background:#565758;border-color:#565758;color:#fff}.cell.correct{background:var(--correct);border-color:var(--correct);color:#fff;font-weight:700;box-shadow:0 2px 12px #6aaa6466}.cell.present{background:var(--present);border-color:var(--present);color:#fff;font-weight:700;box-shadow:0 2px 12px #c9b45866}.cell.absent{background:var(--absent);border-color:var(--absent);color:#f8fafc}#input-section{margin:20px 0}.input-row{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin-bottom:12px;max-width:100%}.sequence-input{padding:12px 4px;font-size:clamp(16px,4vw,20px);text-align:center;background:#1e293b80;color:var(--text);border:2px solid var(--border);border-radius:4px;font-weight:700;width:100%;font-variant-numeric:tabular-nums;min-width:0;transition:all .2s}.sequence-input:focus{outline:none;border-color:var(--accent);background:#1e293bcc;box-shadow:0 0 0 3px #94a3b81a}.sequence-input::-webkit-outer-spin-button,.sequence-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.sequence-input[type=number]{-moz-appearance:textfield}button{width:100%;padding:14px;font-size:16px;font-weight:700;background:var(--key-bg);color:#fff;border:none;border-radius:6px;cursor:pointer;transition:all .2s ease;text-transform:uppercase;letter-spacing:.05em;box-shadow:0 2px 4px #0003}button:hover:not(:disabled){background:var(--hover);transform:translateY(-1px);box-shadow:0 4px 8px #0000004d}button:disabled{opacity:.5;cursor:not-allowed}#message{text-align:center;margin:16px 0;font-size:16px;min-height:24px;font-weight:500}.error{color:#ff6b6b}.success{color:var(--correct)}.info{color:var(--key-bg)}#stats{text-align:center;margin-top:20px;padding-top:20px;border-top:1px solid var(--border)}.modal{display:none;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;background-color:#000000d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .2s ease}.modal.active{display:flex;align-items:center;justify-content:center}.modal-content{background:linear-gradient(135deg,var(--modal-bg) 0%,rgba(30,41,59,.95) 100%);padding:32px;border-radius:12px;border:1px solid var(--border);max-width:500px;width:90%;max-height:90vh;overflow-y:auto;position:relative;animation:slideIn .3s ease;box-shadow:0 20px 60px #00000080}.close-btn{position:absolute;right:16px;top:16px;font-size:28px;font-weight:700;color:var(--text);background:none;border:none;cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;opacity:.6;transition:opacity .2s}.close-btn:hover{opacity:1}.modal-content h2{margin-bottom:16px;font-size:24px}.modal-content h3{margin-top:20px;margin-bottom:12px;font-size:18px}.modal-content p{margin-bottom:12px;line-height:1.6;color:#d7dadc}.example-row{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin:12px 0}.example-cell{aspect-ratio:1;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;border-radius:2px;background:var(--bg);color:var(--text)}.example-cell.correct{background:var(--correct);border-color:var(--correct);color:#fff}.example-cell.present{background:var(--present);border-color:var(--present);color:#fff}.example-cell.absent{background:var(--absent);border-color:var(--absent);color:#fff}.auth-form{display:flex;flex-direction:column;gap:12px}.auth-form input{padding:12px;background:var(--bg);color:var(--text);border:2px solid var(--border);border-radius:4px;font-size:14px}.auth-form input:focus{outline:none;border-color:var(--key-bg)}.auth-divider{text-align:center;margin:16px 0;color:var(--key-bg)}.auth-divider a{color:var(--accent);text-decoration:none;font-weight:500;transition:all .2s}.auth-divider a:hover{color:var(--text);text-decoration:underline}.google-btn{background:#fff;color:#1f2937;display:flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--border);transition:all .2s}.google-btn:hover{background:#f3f4f6;transform:translateY(-1px);box-shadow:0 4px 12px #ffffff1a}.google-btn svg{flex-shrink:0}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:20px 0}.stat-item{text-align:center}.stat-value{font-size:32px;font-weight:700;color:var(--correct)}.stat-label{font-size:12px;color:var(--key-bg);margin-top:4px}.leaderboard-list{list-style:none;margin-top:16px}.leaderboard-item{display:flex;justify-content:space-between;padding:12px;border-bottom:1px solid var(--border)}.user-info{display:flex;align-items:center;gap:8px}.rank{font-weight:700;color:var(--present)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{transform:translateY(-50px);opacity:0}to{transform:translateY(0);opacity:1}}@media(max-width:480px){h1,.logo{font-size:28px}.cell{font-size:clamp(12px,3vw,18px);padding:1px}.sequence-input{padding:10px 6px;font-size:18px}.modal-content{padding:20px}}@media(max-width:360px){h1,.logo{font-size:24px}.cell{font-size:clamp(10px,2.5vw,16px);padding:1px}.sequence-input{padding:8px 4px;font-size:16px}}.landing-app-container{width:100%!important;max-width:100%!important;padding:0!important;margin:0;display:flex;flex-direction:column;min-height:100vh;align-items:center}.landing-content-wrapper{width:100%;max-width:500px;padding:60px 20px 40px;display:flex;flex-direction:column;align-items:center;flex:1;justify-content:center}.landing-header{text-align:center;margin-bottom:48px;width:100%}.landing-logo{font-size:80px;font-weight:700;font-family:Times New Roman,serif;font-style:italic;display:block;margin-bottom:20px;color:var(--text)}.landing-title{font-size:48px;font-weight:700;letter-spacing:.05em;margin-bottom:12px;color:var(--text)}.landing-subtitle{font-size:18px;color:var(--accent);font-weight:400}.landing-actions{width:100%;display:flex;flex-direction:column;gap:14px;margin-bottom:48px}.landing-primary-btn{width:100%;background:linear-gradient(135deg,#475569,#64748b,#94a3b8);color:#fff;padding:18px 32px;font-size:18px;font-weight:700;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;text-transform:uppercase;letter-spacing:.05em;box-shadow:0 4px 12px #64748b4d}.landing-primary-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #94a3b866;background:linear-gradient(135deg,#334155,#475569,#64748b)}.landing-secondary-btn{width:100%;background:transparent;color:var(--text);padding:16px 32px;font-size:16px;font-weight:600;border:2px solid var(--border);border-radius:8px;cursor:pointer;transition:all .2s;text-transform:none}.landing-secondary-btn:hover{border-color:var(--accent);background:#94a3b81a;transform:translateY(-1px)}.landing-info{width:100%;display:flex;flex-direction:column;gap:16px}.landing-info-item{display:flex;align-items:center;gap:16px;padding:18px;background:#cbd5e1;border-radius:8px;border:1px solid #94A3B8}.landing-info-item svg{flex-shrink:0;color:var(--bg)}.landing-info-item p{margin:0;color:var(--bg);font-size:15px;line-height:1.5;text-align:left;font-weight:500}@media(max-width:480px){.landing-content-wrapper{padding:40px 20px 30px}.landing-logo{font-size:64px}.landing-title{font-size:36px}.landing-subtitle{font-size:16px}.landing-primary-btn{font-size:16px;padding:16px 24px}.landing-secondary-btn{font-size:15px;padding:14px 24px}.landing-info-item{padding:14px}.landing-info-item p{font-size:14px}}.info-icon{width:20px;height:20px}.info-item p{font-size:13px}} .solution-info{margin-top:20px;padding:20px;background:#3a3a3c4d;border-radius:8px;text-align:left}.solution-sequence{margin-bottom:12px;font-size:16px;line-height:1.6}.solution-rule{font-size:15px;line-height:1.6;color:var(--present)}.solution-sequence strong,.solution-rule strong{color:var(--text);display:block;margin-bottom:4px}@media(max-width:480px){.solution-info{padding:16px}.solution-sequence,.solution-rule{font-size:14px}}footer{position:relative;left:50%;right:50%;margin-left:-50vw;margin-right:-50vw;width:100vw;margin-top:auto;padding:24px 20px;text-align:center;border-top:1px solid var(--border);background:#0f172acc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 -2px 10px #0003}.footer-content{max-width:100%;margin:0 auto;padding:0 20px}.footer-row{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;font-size:12px}.footer-text{color:var(--text);opacity:.7;white-space:nowrap}.footer-link-btn{background:none;border:none;color:var(--accent);font-size:12px;font-weight:500;cursor:pointer;padding:0;width:auto;text-transform:none;transition:all .2s;white-space:nowrap}.footer-link-btn:hover{color:var(--text);text-decoration:underline;transform:none;box-shadow:none}.footer-link{color:var(--accent);text-decoration:none;font-size:12px;font-weight:500;transition:all .2s;white-space:nowrap}.footer-link:hover{color:var(--text);text-decoration:underline}.footer-separator{color:var(--border);font-size:12px}.footer-text a{color:var(--accent);text-decoration:none;transition:all .2s;font-weight:500}.footer-text a:hover{color:var(--text);text-decoration:underline}.landing-footer{position:relative;left:50%;right:50%;margin-left:-50vw;margin-right:-50vw;width:100vw;margin-top:auto;padding:24px 20px;text-align:center;border-top:1px solid var(--border);background:#0f172ae6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 -2px 10px #0003}@media(max-width:768px){.footer-row{font-size:11px;gap:6px}.footer-link-btn,.footer-link,.footer-separator{font-size:11px}.footer-text{white-space:normal}}@media(max-width:480px){footer,.landing-footer{padding:20px 16px}.footer-row{font-size:10px;gap:4px}.footer-link-btn,.footer-link,.footer-separator{font-size:10px}}.countdown-container{margin-top:24px;padding:20px;background:#1e293b80;border-radius:8px;border:1px solid var(--border);text-align:center}.countdown-label{font-size:14px;color:var(--accent);margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}.countdown-timer{font-size:32px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:.05em}@media(max-width:480px){.countdown-timer{font-size:28px}.countdown-label{font-size:12px}}