.dashboard-page{min-height:100dvh;background:var(--bg);padding:20px}.dashboard-container{max-width:960px;margin:0 auto}.dashboard-footer-actions{display:flex;justify-content:center;gap:10px;margin-top:30px;padding-top:20px;border-top:2px solid var(--border)}.back-btn{background:none;border:none;color:var(--text-muted);font-size:.9rem;cursor:pointer;padding:0 0 16px;display:block;text-transform:uppercase;letter-spacing:.05em;font-weight:700}.back-btn:hover{color:var(--text)}.challenge-btn{padding:10px 20px;background:var(--yellow);border:2px solid var(--black);font-weight:900;cursor:pointer;color:var(--black);font-size:.85rem;text-transform:uppercase;letter-spacing:.08em}.challenge-btn:hover:not(:disabled){background:var(--yellow-hover)}.challenge-btn:disabled{background:var(--surface-alt);color:var(--text-muted);cursor:default;border-color:var(--border-light)}.challenge-btn.random-btn{background:var(--blue);color:#fff;border-color:var(--blue)}.challenge-btn.random-btn:hover{background:var(--blue-hover);border-color:var(--blue-hover)}.dashboard-tabs{display:flex;gap:0;justify-content:center;margin-bottom:24px;border:2px solid var(--border)}.dashboard-tab{padding:10px 20px;background:transparent;border:none;border-right:2px solid var(--border);cursor:pointer;font-size:.85rem;font-weight:700;color:var(--text-sub);text-transform:uppercase;letter-spacing:.06em;flex:1}.dashboard-tab:last-child{border-right:none}.dashboard-tab:hover{background:var(--surface-alt);color:var(--text)}.dashboard-tab.active{background:var(--black);color:var(--white)}@media (prefers-color-scheme: dark){.dashboard-tab.active{background:var(--red);color:var(--white)}}.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:900;color:var(--text);text-transform:uppercase;letter-spacing:.06em}.burger-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.7);z-index:99}.burger-menu{position:relative;z-index:100}.burger-btn{background:var(--yellow);border:2px solid var(--black);font-size:1.2rem;cursor:pointer;color:var(--black);padding:4px 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.nav-title{font-size:1.4rem;font-weight:900;color:var(--text);margin:0;text-transform:uppercase;letter-spacing:.04em}.challenge-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.challenge-tile{position:relative;display:flex;justify-content:center;align-items:center;padding:36px 4px 28px;cursor:pointer;background:var(--surface);border:2px solid var(--border-light)}.challenge-tile:hover{border-color:var(--border)}.challenge-tile.no-click{cursor:default}.challenge-tile.no-click:hover{border-color:var(--border-light)}.challenge-tile.unplayed,.challenge-tile.solved,.challenge-tile.tried{background:var(--surface)}.difficulty-bar{position:absolute;bottom:0;left:0;right:0;height:4px}.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 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var(--white);padding:16px;min-width:260px;z-index:1000;pointer-events:auto;color:var(--white)}.challenge-tooltip.above{transform:translate(-50%,-100%);margin-top:-12px}.challenge-tooltip.below{transform:translate(-50%,12px)}.challenge-tooltip:after{content:"";position:absolute;left:50%;transform:translate(-50%)}.challenge-tooltip.above:after{bottom:-10px;border-left:8px solid transparent;border-right:8px solid transparent;border-top:8px solid var(--black)}.challenge-tooltip.below:after{top:-10px;border-left:8px solid transparent;border-right:8px solid transparent;border-bottom:8px solid var(--black)}.tooltip-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid 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var(--border-light)}.leaderboard-title{margin:0;color:var(--text);font-weight:900;font-size:1rem;text-transform:uppercase;letter-spacing:.05em}.user-rank-badge{background:var(--blue);color:#fff;padding:4px 12px;font-weight:900;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}.leaderboard-filter{display:flex;border:2px solid var(--border)}.leaderboard-filter button{flex:1;padding:8px 16px;background:var(--surface);border:none;border-right:2px solid var(--border);cursor:pointer;font-size:.85rem;font-weight:700;color:var(--text-sub);text-transform:uppercase;letter-spacing:.05em}.leaderboard-filter button:last-child{border-right:none}.leaderboard-filter button:hover{background:var(--surface-alt);color:var(--text)}.leaderboard-filter button.active{background:var(--blue);color:#fff}.leaderboard-empty,.leaderboard-loading,.leaderboard-error{text-align:center;padding:40px 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tr.current-user:hover{background:rgba(242,200,0,.2)}.rank-cell{width:70px;font-weight:900;color:var(--text-sub)}.medal{font-size:1.2rem}.name-cell{color:var(--text);font-weight:700}.points-cell{width:110px;text-align:right;color:var(--text-sub);font-weight:700}.status-cell{width:110px;text-align:right;font-weight:700}.status-solved{color:var(--status-solved)}.status-overtime{color:var(--blue)}.status-away{color:var(--text-muted)}.friends-activity{display:flex;flex-direction:column;gap:20px}.activity-loading,.activity-error{text-align:center;padding:40px 20px;color:var(--text-muted);font-weight:700;text-transform:uppercase;letter-spacing:.05em}.activity-error{color:var(--red)}.activity-empty{text-align:center;padding:60px 20px;color:var(--text-muted)}.activity-empty .empty-icon{font-size:3rem;margin-bottom:16px}.activity-empty h3{margin:0 0 8px;color:var(--text);font-weight:900;text-transform:uppercase;letter-spacing:.05em}.activity-empty p{margin:0;font-size:.9rem}.activity-empty .empty-hint{margin-top:12px;font-size:.85rem;color:var(--text-muted)}.activity-feed{display:flex;flex-direction:column;gap:2px}.activity-card{display:flex;align-items:center;gap:14px;padding:12px 16px;background:var(--surface);border:2px solid var(--border-light)}.activity-card:hover{border-color:var(--border)}.activity-avatar{width:40px;height:40px;background:var(--blue);color:#fff;display:flex;justify-content:center;align-items:center;font-weight:900;font-size:1.1rem;flex-shrink:0}.activity-content{flex:1}.activity-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:3px}.activity-name{font-weight:900;color:var(--text);font-size:.9rem;text-transform:uppercase;letter-spacing:.04em}.activity-time{font-size:.8rem;color:var(--text-muted)}.activity-body{display:flex;align-items:center;gap:10px}.activity-challenge{font-size:.85rem;color:var(--text-muted)}.activity-result{font-weight:700;font-size:.85rem}.activity-result.solved{color:var(--status-solved)}.activity-result.failed{color:var(--status-failed)}.activity-view-btn{padding:6px 14px;background:var(--surface);border:2px solid 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var(--border);cursor:pointer;font-size:.85rem;font-weight:700;color:var(--text-sub);text-transform:uppercase;letter-spacing:.05em}.stats-timeframe-btn:last-child{border-right:none}.stats-timeframe-btn:hover{background:var(--surface-alt);color:var(--text)}.stats-timeframe-btn.active{background:var(--black);color:var(--white);font-weight:900}@media (prefers-color-scheme: dark){.stats-timeframe-btn.active{background:var(--red);color:var(--white)}}.stats-header{display:flex;align-items:center;justify-content:flex-end}.stats-compare-bar{display:flex;align-items:center;gap:10px;font-size:.85rem;color:var(--text-sub);font-weight:700;text-transform:uppercase;letter-spacing:.05em}.stats-friend-select{padding:7px 10px;border:2px solid var(--border);background:var(--surface);font-size:.85rem;cursor:pointer;color:var(--text)}.stats-no-friends{font-size:.85rem;color:var(--text-muted);margin:0;font-style:italic}.stats-table-wrap{background:var(--surface);border:2px solid var(--border);overflow:hidden}.stats-table{width:100%;border-collapse:collapse}.stats-table thead tr{background:var(--surface-alt)}.stats-table th{padding:12px 16px;font-size:.8rem;font-weight:900;text-transform:uppercase;letter-spacing:.08em;color:var(--text-sub);text-align:left}.stats-col-label{width:50%}.stats-col-player{width:25%;text-align:center!important}.stats-table tbody tr{border-bottom:1px solid var(--border-light)}.stats-table tbody tr:last-child{border-bottom:none}.stats-table tbody tr:hover{background:var(--surface-alt)}.stats-row-label{padding:14px 16px;color:var(--text-sub);font-size:.85rem;font-weight:700}.stats-row-value{padding:14px 16px;text-align:center;font-weight:900;font-size:1rem;color:var(--text);position:relative}.stats-winner{color:var(--status-solved);background:rgba(46,125,50,.07)}.stats-win-dot{display:inline-block;width:6px;height:6px;background:var(--status-solved);margin-left:6px;vertical-align:middle}@media only screen and (max-width: 600px){.dashboard-page{padding:10px}.challenge-btn{font-size:.8rem;padding:8px 12px}.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:1rem}.challenge-grid{grid-template-columns:repeat(5,1fr);gap:6px}.challenge-tile{padding:30px 3px 14px}.challenge-tile .daily-number{font-size:1rem}.challenge-tooltip{position:fixed;left:10px!important;right:10px;top:auto!important;bottom:10px;transform:none!important;width:auto;min-width:auto}.challenge-tooltip:after{display:none}.leaderboard-type-tabs{flex-direction:column}.leaderboard-type-tabs button{border-right:none;border-bottom:2px solid var(--border)}.leaderboard-type-tabs button:last-child{border-bottom:none}.leaderboard-info{flex-direction:column;gap:10px;text-align:center}.leaderboard-table th,.leaderboard-table td{padding:10px}.rank-cell{width:50px}.status-cell,.points-cell{width:70px}.activity-card{flex-wrap:wrap}.activity-content{flex-basis:calc(100% - 55px)}.activity-view-btn{margin-left:54px;margin-top:8px}.stats-compare-bar{flex-direction:column;align-items:flex-start;gap:6px}.stats-friend-select{width:100%}}:root{--red: #E4311A;--blue: #5A97D5;--black: #1C1C1C;--white: #FFFFFF;--gray: #AAAAAA;--dark: #1C1C1C;--green: #2E7D32;--green-hover: #1B5E20;--error-color: #E4311A;--success-color:#2E7D32;--bg: #ECEDEC;--surface: #FFFFFF;--surface-alt: #F2F2F2;--text: #1C1C1C;--text-sub: #555555;--text-muted: #888888;--border: #1C1C1C;--border-light: #CCCCCC;--tile-border: #1C1C1C;--score-green: #2E7D32;--score-orange: #E65100;--score-red: #E4311A;--diff-easy: #2E7D32;--diff-medium: #F57C00;--diff-hard: #E65100;--diff-very-hard:#C62828;--status-solved: #2E7D32;--status-failed: #E4311A;--yellow: #E4311A;--yellow-hover: #C82D17;--yellow-glow: 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#888888;--gray-888: #999999;--gray-666: #AAAAAA;--gray-333: #CCCCCC;--gray-222: #DDDDDD;--warning-bg: #2A1500;--warning-border:#F57C00;--warning-text: #F57C00;--error-bg: #2A0000;--error-bg-dark:#440000;--success-bg: #001A08}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Helvetica Neue,Helvetica,Arial,sans-serif;background-color:var(--bg);color:var(--text);min-height:100vh;min-height:100dvh}.app-container{min-height:100vh;min-height:100dvh;display:flex;justify-content:center;align-items:flex-start;padding:clamp(8px,1.5dvh,20px)}.app-container.game-view{height:var(--real-vh, 100dvh);min-height:unset;align-items:stretch;overflow:hidden}.content-wrapper{max-width:600px;width:100%;display:flex;flex-direction:column}.user-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:clamp(5px,2dvh,20px);padding-bottom:10px;border-bottom:2px solid var(--border-light)}.user-bar-left{display:flex;align-items:center}.site-logo{height:clamp(48px,8dvh,72px);width:auto;display:block;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}.site-title{display:inline-block;padding:.15em .6em;margin:0;font-size:clamp(1.2rem,2vw,1.8rem);font-weight:900;letter-spacing:-.03em;color:var(--white);background-color:var(--red);cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}.user-bar-right{display:flex;align-items:center;gap:6px}.user-info{color:var(--text-muted);font-size:.9rem}.bar-btn{padding:7px 14px;cursor:pointer;font-size:.85rem;font-weight:700;border:2px solid var(--border-light);border-radius:6px;background:var(--surface);color:var(--text);letter-spacing:.02em}.bar-btn:hover{border-color:var(--border);background:var(--surface-alt)}.bar-btn.primary{background:var(--red);color:var(--white);border-color:var(--red)}.bar-btn.primary:hover{background:var(--yellow-hover);border-color:var(--yellow-hover)}.bar-btn.secondary{background:var(--surface);color:var(--text);border-color:var(--border-light);padding:5px 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.btn-icon{display:block;width:16px;height:16px}}.game-header-row{display:flex;justify-content:center;align-items:center;gap:12px;margin-bottom:clamp(10px,2.5dvh,30px)}.daily-number{font-size:clamp(.9rem,2.5vw,1.4rem);font-weight:700;color:var(--text-sub);letter-spacing:.04em;text-transform:uppercase}.game-header-row .timer{min-width:unset;padding:3px 10px;font-size:1rem}.target-grid{display:flex;justify-content:center;gap:8px;margin-bottom:clamp(4px,1dvh,12px)}.target-tile{position:relative;background-color:var(--white);color:var(--black);border:3px solid var(--black);padding:clamp(8px,1.2dvh,14px) clamp(10px,2.5vw,18px);font-size:clamp(2.8rem,6vmin,4.5rem);font-weight:900;letter-spacing:-.04em;line-height:1}.target-tile:before{content:"";position:absolute;top:5px;left:calc(50% - 8px);width:6px;height:6px;background:var(--black);border-radius:50%}.target-tile:after{content:"";position:absolute;top:5px;right:calc(50% - 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#0000001f}.landing-desc{font-size:clamp(.8rem,2vw,.9rem);color:var(--text-sub);line-height:1.6;max-width:320px}.landing-actions{display:flex;flex-direction:column;gap:8px;align-items:center}.landing-btn{padding:10px 28px;font-size:.95rem;font-weight:700;border:none;border-radius:20px;cursor:pointer;letter-spacing:.03em;min-width:160px}.landing-btn.login{background:var(--red);color:#fff}.landing-btn.login:hover{background:var(--yellow-hover)}.landing-btn.register{background:var(--blue);color:#fff}.landing-btn.register:hover{background:var(--blue-hover)}.landing-btn.guest{background:var(--black);color:#fff}.landing-btn.guest:hover{background:#333}.pregame-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.75);z-index:1050}.pregame-modal{position:fixed;top:20%;left:50%;transform:translate(-50%);text-align:center;z-index:1051;width:90vw;max-width:400px}.pregame-title{display:inline-block;padding:.1em .6em;color:var(--white);background-color:var(--red);margin:0 0 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