.dashboard-page{min-height:100vh;background-size:120px 120px;padding:20px}.dashboard-container{max-width:1000px;margin:0 auto;position:relative}.dashboard-footer-actions{display:flex;justify-content:center;gap:10px;margin-top:30px;padding-top:20px;border-top:2px solid var(--gray-eee)}.back-btn{background:none;border:none;color:var(--gray-666);font-size:.9rem;cursor:pointer;padding:0 0 16px;display:block}.back-btn:hover{color:var(--gray-333)}.challenge-btn{padding:8px 16px;background:var(--yellow);border:none;border-radius:4px;font-weight:700;cursor:pointer;color:var(--dark);font-size:.9rem}.challenge-btn:hover:not(:disabled){background:var(--yellow-hover)}.challenge-btn:disabled{background:#e0e0e0;color:var(--gray-999);cursor:default}.challenge-btn.random-btn{background:var(--blue);color:#fff}.challenge-btn.random-btn:hover{background:var(--blue-hover)}.dashboard-tabs{display:flex;gap:10px;justify-content:center;margin-bottom:25px}.dashboard-tab{padding:8px 16px;background:var(--yellow);border:2px solid var(--yellow);border-radius:4px;cursor:pointer;font-size:.9rem;font-weight:700;color:var(--dark);transition:background .15s}.dashboard-tab:hover{background:var(--yellow-hover);border-color:var(--yellow-hover)}.dashboard-tab.active{border-color:#000}.mobile-only{display:none}.mobile-menu-bar{flex-direction:row;justify-content:space-between;align-items:center;margin-bottom:16px}.mobile-active-tab{font-size:1rem;font-weight:700;color:var(--gray-333)}.burger-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);z-index:99}.burger-menu{position:relative;z-index:100}.burger-btn{background:var(--yellow);border:none;border-radius:6px;font-size:1.4rem;cursor:pointer;color:#000;padding:4px 10px;line-height:1}.burger-menu{flex-direction:column;gap:4px;margin-bottom:16px;background:rgba(30,34,37,.97);border-radius:8px;padding:8px}.burger-menu button{padding:10px 16px;background:none;border:none;border-radius:6px;cursor:pointer;font-size:.95rem;color:var(--gray-ccc);text-align:left;width:100%}.burger-menu button.active{background:var(--yellow);color:var(--dark);font-weight:700}.dashboard-content{padding:25px 0;min-height:500px}.challenge-calendar{display:flex;flex-direction:column;gap:20px}.calendar-nav{display:flex;justify-content:space-between;align-items:center}.calendar-nav .nav-btn{padding:6px 10px;background:var(--yellow);border:none;border-radius:4px;cursor:pointer;color:#000;display:flex;align-items:center;justify-content:center;line-height:0}.calendar-nav .nav-btn:hover:not(:disabled){background:var(--yellow-hover)}.calendar-nav .nav-btn:disabled{opacity:.35;cursor:not-allowed}.calendar-nav .nav-title{font-size:1.5rem;font-weight:700;color:var(--gray-333);margin:0}.challenge-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:15px}.challenge-tile{position:relative;display:flex;justify-content:center;align-items:center;padding:40px 6px 30px;cursor:pointer;transition:transform .15s,box-shadow .15s;box-shadow:0 4px 12px #00000026;border:2px solid var(--gray-999);border-radius:5px}.challenge-tile:hover{transform:translateY(-3px);box-shadow:0 8px 20px #00000040}.challenge-tile:active{transform:translateY(1px);box-shadow:0 2px 8px #00000026}.challenge-tile.no-click{cursor:default}.challenge-tile.no-click:hover,.challenge-tile.no-click:active{transform:none;box-shadow:none}.challenge-tile.unplayed,.challenge-tile.solved,.challenge-tile.tried{background:var(--bg-panel)}.difficulty-bar{position:absolute;bottom:0;left:0;right:0;height:5px;border-radius:0 0 3px 3px}.difficulty-bar.easy{background:var(--diff-easy)}.difficulty-bar.medium{background:var(--diff-medium)}.difficulty-bar.hard{background:var(--diff-hard)}.difficulty-bar.very-hard{background:var(--diff-very-hard)}.challenge-tile .daily-number{font-size:clamp(1rem,2.5vw,2rem);font-weight:700;color:var(--gray-ccc)}.status-bar{position:absolute;top:0;left:0;right:0;height:25px;border-radius:3px 3px 0 0;display:flex;align-items:center;justify-content:center;font-size:.65rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:#fff}.status-bar.unplayed{background:var(--yellow);color:var(--dark)}.status-bar.solved{background:var(--status-solved)}.status-bar.tried{background:var(--status-failed)}.challenge-tile.today{box-shadow:0 0 0 3px var(--dark),0 4px 12px #00000026}.calendar-loading,.calendar-error{text-align:center;padding:60px 20px;color:var(--gray-666)}.calendar-error{color:var(--red-dark)}.challenge-tooltip{position:fixed;transform:translate(-50%,-100%);margin-top:-15px;background:rgba(30,34,37,.95);border-radius:8px;box-shadow:0 8px 30px #00000080;padding:18px;min-width:260px;z-index:1000;pointer-events:auto;color:#fff}.challenge-tooltip:after{content:"";position:absolute;bottom:-8px;left:50%;transform:translate(-50%);border-left:8px solid transparent;border-right:8px solid transparent;border-top:8px solid rgba(30,34,37,.95)}.tooltip-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.15)}.tooltip-daily{font-weight:700;color:var(--yellow)}.tooltip-date{color:var(--gray-aaa);font-size:.9rem}.tooltip-target{font-size:1.1rem;margin-bottom:5px;color:#fff}.tooltip-tiles{font-size:.9rem;color:var(--gray-aaa);font-family:monospace;margin-bottom:12px}.tooltip-stats{background:rgba(255,255,255,.08);border-radius:4px;padding:10px;margin-bottom:12px}.stat-row{display:flex;justify-content:space-between;font-size:.85rem;padding:3px 0}.stat-label{color:var(--gray-aaa)}.stat-value{font-weight:700;color:var(--yellow)}.tooltip-result{display:flex;align-items:center;gap:8px;padding:10px;border-radius:4px;margin-bottom:12px}.tooltip-result.solved{background:rgba(76,175,80,.15);color:var(--score-green)}.tooltip-result.attempted{background:rgba(255,183,77,.15);color:var(--score-orange)}.result-icon{font-size:1.2rem}.tooltip-actions{display:flex;flex-direction:column;gap:8px}.tooltip-btn{padding:10px 15px;border:none;border-radius:4px;cursor:pointer;font-weight:700;font-size:.9rem;width:100%}.tooltip-btn.play{background:var(--yellow);color:var(--dark)}.tooltip-btn.play:hover{background:var(--yellow-hover)}.tooltip-btn.leaderboard{background:var(--yellow);color:var(--dark);border:2px solid var(--yellow)}.tooltip-btn.leaderboard:hover{background:var(--yellow-hover);border-color:var(--yellow-hover);color:var(--dark)}.today-note{font-size:.85rem;color:var(--gray-aaa);text-align:center;font-style:italic}.leaderboard{display:flex;flex-direction:column;gap:20px}.leaderboard-type-tabs{display:flex;gap:10px;justify-content:center}.leaderboard-type-tabs button{padding:12px 30px;background:var(--gray-lighter);border:1px solid var(--gray-ccc);border-radius:4px;cursor:pointer;font-size:1rem}.leaderboard-type-tabs button:hover{background:#e0e0e0}.leaderboard-type-tabs button.active{background:var(--yellow);border-color:var(--yellow);font-weight:700}.leaderboard-section{display:flex;flex-direction:column;gap:15px}.leaderboard-info{display:flex;justify-content:space-between;align-items:center;padding:15px;background:#f9f9f9;border-radius:8px}.leaderboard-title{margin:0;color:var(--gray-333)}.user-rank-badge{background:var(--blue-light);color:var(--blue-dark-text);padding:6px 12px;border-radius:4px;font-weight:700;font-size:.9rem}.leaderboard-filter{display:flex;gap:10px;justify-content:center}.leaderboard-filter button{padding:8px 20px;background:white;border:1px solid var(--gray-ccc);border-radius:4px;cursor:pointer;font-size:.95rem}.leaderboard-filter button:hover{background:var(--gray-lighter)}.leaderboard-filter button.active{background:var(--blue);border-color:var(--blue);color:#fff}.leaderboard-empty,.leaderboard-loading,.leaderboard-error{text-align:center;padding:40px 20px;color:var(--gray-666)}.leaderboard-error{color:var(--red-dark)}.leaderboard-table{width:100%;border-collapse:collapse;background:white}.leaderboard-table th,.leaderboard-table td{padding:15px;text-align:left;border-bottom:1px solid #e0e0e0}.leaderboard-table th{font-weight:700;color:var(--gray-666);font-size:.85rem;text-transform:uppercase;background:var(--gray-lightest)}.leaderboard-table tbody tr:hover{background:#f9f9f9}.leaderboard-table tr.current-user{background:#fffde7}.leaderboard-table tr.current-user:hover{background:#fff9c4}.rank-cell{width:80px;font-weight:700;color:var(--gray-666)}.medal{font-size:1.3rem}.name-cell{color:var(--gray-333)}.points-cell{width:120px;text-align:right;color:var(--gray-666);font-weight:500}.status-cell{width:120px;text-align:right;font-weight:600}.status-solved{color:var(--status-solved)}.status-overtime{color:var(--blue)}.status-away{color:var(--gray-666)}.friends-activity{display:flex;flex-direction:column;gap:20px}.activity-loading,.activity-error{text-align:center;padding:40px 20px;color:var(--gray-666)}.activity-error{color:var(--red-dark)}.activity-empty{text-align:center;padding:60px 20px;color:var(--gray-666)}.activity-empty .empty-icon{font-size:4rem;margin-bottom:20px}.activity-empty h3{margin:0 0 10px;color:var(--gray-333)}.activity-empty p{margin:0}.activity-empty .empty-hint{margin-top:15px;font-size:.9rem;color:var(--gray-999)}.activity-feed{display:flex;flex-direction:column;gap:12px}.activity-card{display:flex;align-items:center;gap:15px;padding:15px;background:#f9f9f9;border-radius:8px;transition:background .2s}.activity-card:hover{background:var(--gray-lighter)}.activity-avatar{width:45px;height:45px;border-radius:50%;background:var(--blue);color:#fff;display:flex;justify-content:center;align-items:center;font-weight:700;font-size:1.2rem;flex-shrink:0}.activity-content{flex:1}.activity-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.activity-name{font-weight:700;color:var(--gray-333)}.activity-time{font-size:.85rem;color:var(--gray-666)}.activity-body{display:flex;align-items:center;gap:10px}.activity-challenge{font-size:.9rem;color:var(--gray-666)}.activity-result{font-weight:700}.activity-result.solved{color:var(--green-dark)}.activity-result.failed{color:#f57f17}.activity-view-btn{padding:6px 12px;background:white;border:1px solid var(--gray-ccc);border-radius:4px;cursor:pointer;font-size:.85rem;font-weight:700;flex-shrink:0}.activity-view-btn:hover{background:var(--gray-lighter)}@media only screen and (max-width: 600px){.dashboard-page{padding:10px}.challenge-btn{font-size:.8rem;padding:6px 10px}.desktop-only{display:none!important}.mobile-only{display:flex!important}.dashboard-content{padding:10px 0}.calendar-nav{flex-direction:row;gap:5px}.calendar-nav .nav-btn{padding:8px 12px;font-size:.85rem}.calendar-nav .nav-title{font-size:1.1rem}.challenge-grid{grid-template-columns:repeat(5,1fr);gap:10px}.challenge-tile{padding:35px 4px 15px}.challenge-tile .daily-number{font-size:1.1rem}.challenge-tooltip{position:fixed;left:10px!important;right:10px;top:auto!important;bottom:10px;transform:none;width:auto;min-width:auto}.challenge-tooltip:after{display:none}.leaderboard-type-tabs{flex-direction:column}.leaderboard-info{flex-direction:column;gap:10px;text-align:center}.leaderboard-table th,.leaderboard-table td{padding:10px}.rank-cell{width:60px}.status-cell,.points-cell{width:80px}.activity-card{flex-wrap:wrap}.activity-content{flex-basis:calc(100% - 60px)}.activity-view-btn{margin-left:60px;margin-top:10px}}:root{--yellow: #f2d73a;--yellow-hover: #e6cb35;--yellow-glow: rgba(242, 215, 58, .4);--yellow-bg-tint: rgba(242, 215, 58, .15);--dark: #283033;--blue: hsl(198, 80%, 52%);--blue-hover: hsl(198, 80%, 44%);--blue-light: hsl(198, 80%, 92%);--blue-dark-text: hsl(198, 80%, 30%);--orange: #FFA239;--red: #f44336;--red-dark: #c62828;--red-darker: #d32f2f;--green: #4caf50;--green-hover: #43a047;--green-dark: #2e7d32;--bg-dark: #1e2225;--bg-panel: #2a2a2a;--tile-border: hsl(56, 20%, 40%);--gray-lightest: #fafafa;--gray-lighter: #f5f5f5;--gray-light: #f0f0f0;--gray-eee: #eee;--gray-ddd: #ddd;--gray-ccc: #ccc;--gray-aaa: #aaa;--gray-999: #999;--gray-888: #888;--gray-666: #666;--gray-333: #333;--gray-222: #222;--diff-easy: #4ade80;--diff-medium: #fbbf24;--diff-hard: #fb923c;--diff-very-hard: #f87171;--status-solved: #16a34a;--status-failed: #dc2626;--warning-bg: #fff8e1;--warning-border: #ffcc02;--warning-text: #5d4e00;--error-bg: #ffebee;--error-bg-dark: #ffcdd2;--success-bg: #e8f5e9;--score-orange: #ffb74d;--score-green: #81c784;--score-red: #ef9a9a;--score-red-bright: #ff6b6b}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Helvetica,Arial,sans-serif;background-color:var(--gray-eee);background-image:linear-gradient(90deg,var(--gray-ccc) 1px,transparent 1px),linear-gradient(0deg,var(--gray-ccc) 1px,transparent 1px);background-size:120px 120px;min-height:100vh}.app-container{min-height:100vh;display:flex;justify-content:center;align-items:stretch;padding:clamp(8px,1.5vh,20px)}.content-wrapper{max-width:600px;width:100%;padding-bottom:150px;display:flex;flex-direction:column}.game-header-row{display:flex;justify-content:center;align-items:center;gap:10px;margin-bottom:clamp(40px,5vh,60px)}.daily-number{font-size:clamp(1rem,2.5vw,1.6rem);font-weight:700;color:var(--dark)}.game-header-row .timer{min-width:unset;padding:3px 10px;font-size:1rem}.target-grid{display:flex;justify-content:center;gap:10px;margin-bottom:clamp(4px,1vh,12px)}.target-tile{background-color:var(--yellow);color:#000;padding:clamp(4px,.8vh,12px) clamp(6px,2vw,12px);font-size:clamp(3rem,6vmin,5rem);font-weight:700}.timer{font-size:1rem;font-weight:700;color:var(--gray-333);padding:clamp(4px,.8vh,8px) 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15px;font-size:2.5rem}.pregame-subtitle{color:#fff;font-size:1.6rem;font-weight:700;margin:0 0 10px}.pregame-description{color:#fff;font-size:1.1rem;margin:0 0 30px}.pregame-actions{display:flex;flex-direction:column;gap:12px;align-items:center}.pregame-btn{padding:14px 40px;border:none;border-radius:4px;font-size:1.1rem;font-weight:700;cursor:pointer;min-width:220px}.pregame-btn.primary{background:var(--yellow);color:var(--dark)}.pregame-btn.primary:hover{background:var(--yellow-hover)}.pregame-btn.secondary{background:transparent;color:var(--gray-ddd);border:2px solid var(--gray-ddd)}.pregame-btn.secondary:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}.countdown-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.7);z-index:1200}.countdown-number{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);font-size:clamp(5rem,15vmin,12rem);font-weight:900;color:var(--yellow);z-index:1201;animation:countdown-boom .9s ease-out forwards;text-shadow:0 0 60px var(--yellow-glow);line-height:1}@keyframes countdown-boom{0%{transform:translate(-50%,-50%) scale(.3);opacity:0}20%{opacity:1}80%{transform:translate(-50%,-50%) scale(1.1);opacity:1}to{transform:translate(-50%,-50%) scale(1.2);opacity:0}}.countdown-frame-label{position:fixed;top:calc(50% - 8rem);left:50%;transform:translate(-50%);font-size:clamp(1rem,2.5vw,1.6rem);font-weight:700;color:var(--yellow);z-index:1202;text-align:center;white-space:nowrap}.victory-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.9);z-index:999}.victory-modal-new{position:fixed;top:calc(50% - 60px);left:50%;transform:translate(-50%,-50%);z-index:1000;text-align:center;animation:victory-appear .5s ease-out}.victory-icon{font-size:clamp(3rem,8vmin,6rem);color:var(--yellow);line-height:1;margin-bottom:20px;text-shadow:0 0 40px var(--yellow-glow);animation:victory-check .6s ease-out}@keyframes victory-check{0%{transform:scale(0);opacity:0}50%{transform:scale(1.3)}to{transform:scale(1);opacity:1}}@keyframes victory-appear{0%{opacity:0;transform:translate(-50%,-45%)}to{opacity:1;transform:translate(-50%,-50%)}}.victory-title{display:inline-block;padding:.1em .8em .1em .2em;color:var(--dark);background-color:var(--yellow);margin:0 0 24px;font-size:clamp(1.5rem,4vw,3rem)}.victory-message{color:#fff;font-size:clamp(1.1rem,2.5vw,1.4rem);margin:0 0 8px;line-height:1.5}.victory-highlight{color:var(--yellow);font-weight:700}.victory-hint{color:var(--gray-aaa);font-size:1rem;margin:4px 0 0}.victory-actions{margin-top:32px;display:flex;flex-direction:column;gap:14px;align-items:center}.victory-btn{padding:14px 40px;border:none;border-radius:4px;font-size:1.1rem;font-weight:700;cursor:pointer;min-width:260px}.victory-btn.primary{background:var(--yellow);color:var(--dark)}.victory-btn.primary:hover{background:var(--yellow-hover)}.victory-btn.secondary{background:transparent;color:var(--gray-ddd);border:2px solid var(--gray-ddd)}.victory-btn.secondary:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}.victory-btn.share{background:var(--yellow);color:var(--dark);border:none;font-size:1rem;padding:12px 40px}.victory-btn.share:hover{background:var(--yellow-hover)}.current-best-banner{background:var(--warning-bg);border:1px solid var(--warning-border);border-radius:8px;padding:10px 20px;margin:0 auto clamp(8px,1.5vh,20px) auto;max-width:600px;text-align:center;color:var(--warning-text);font-size:.95em}.game-grid{display:flex;flex-direction:column;gap:.5em;align-items:center;justify-content:center;flex:1;font-size:clamp(1rem,2.5vmin,1.5rem)}.grid-row{display:flex;gap:.5em;align-items:center}.tile{width:2.7em;height:1.8em;font-size:1.35em;color:#000;border:.05em solid var(--tile-border);font-weight:700;display:flex;justify-content:center;align-items:center;-webkit-user-select:none;-moz-user-select:none;user-select:none;background-color:#fff;flex-shrink:0}.tile.operator-tile{width:2em}.tile.active{border-color:var(--orange);border-width:.1em}.tile.operator-tile.active{border-color:var(--blue);border-width:.1em}.tile.best.result-tile{background-color:var(--tile-border)}.equals{font-size:1.5em;color:var(--gray-222);font-weight:700;padding:0 .3em}.row-spacer{width:3em;flex-shrink:0}.delete-row-btn{background:transparent;border:none;color:var(--red);font-size:2em;cursor:pointer;font-weight:700;width:1.5em;padding:0;transition:color .2s}.delete-row-btn:hover{color:var(--red-darker)}.keyboard{display:grid;grid-template-columns:repeat(18,minmax(auto,1em));grid-auto-rows:2.5em;gap:.35em;justify-content:center;font-size:clamp(.6rem,3vmin,1.2rem);position:fixed;bottom:clamp(8px,1.5vh,20px);left:0;right:0;padding:8px clamp(8px,2vw,20px)}.key{grid-column:span 3;border:none;padding:0;display:flex;justify-content:center;align-items:center;color:var(--gray-333);cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;font-size:1.3em;font-weight:700;transition:filter .2s}.key:hover:not(:disabled){filter:brightness(1.1)}.key:disabled{cursor:default;filter:brightness(.8)}.init-key{background-color:var(--orange)}.calc-key{background-color:var(--yellow);grid-column:span 4}@keyframes 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.2em;color:var(--dark);background-color:var(--yellow);font-size:2.5rem;margin:0 0 20px}.auth-close{position:absolute;top:30px;right:0;background:none;border:none;font-size:1.8rem;cursor:pointer;color:var(--gray-aaa);line-height:1}.auth-close:hover{color:#fff}.auth-modal h2{margin:0 0 24px;text-align:center;color:var(--yellow);font-size:1.6rem}.form-group{margin-bottom:15px;text-align:left}.form-group label{display:block;margin-bottom:5px;font-weight:700;color:var(--gray-ccc)}.form-group input{width:100%;padding:10px;border:1px solid rgba(255,255,255,.2);border-radius:4px;font-size:1rem;background:rgba(255,255,255,.1);color:#fff}.form-group input::-moz-placeholder{color:var(--gray-888)}.form-group input::placeholder{color:var(--gray-888)}.form-group input:focus{outline:none;border-color:var(--yellow)}.form-group input:-webkit-autofill,.form-group input:-webkit-autofill:hover,.form-group input:-webkit-autofill:focus{-webkit-box-shadow:0 0 0 1000px rgba(30,34,37,1) 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