/* Gibo theme: neutral surfaces, system type and one orange accent. Layout basics come from style.css. */
:root{--paper:#f4f5f7;--surface:#fff;--surface-2:#f7f8fa;--ink:#15171c;--ink-2:#3a404b;--muted:#667085;--line:#e3e6eb;--line-strong:#cdd2da;--accent:#e8590c;--accent-strong:#c9460b;--accent-hover:#a83a08;--accent-soft:#fff2e8;--accent-line:#f7c4a0;--shadow:0 1px 2px rgb(16 24 40/.05);--shadow-lg:0 16px 40px rgb(16 24 40/.16);--font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
/* Names used by style.css. */
:root{--purple:var(--accent-strong);--lime:var(--surface);--orange:var(--accent);--orange-dark:var(--accent-hover)}
body{background:var(--paper);font-family:var(--font);-webkit-font-smoothing:antialiased}
h2,h3{letter-spacing:-.015em}
.eyebrow{font-weight:700}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent-strong);outline-offset:3px}

/* Header, navigation and buttons. */
.header,main,footer{max-width:1320px}
.header{height:80px;border-bottom:0}
.logo{color:var(--ink);font-size:30px;font-weight:800;letter-spacing:-.045em}
/* The ornament after the wordmark is drawn as an accent dot. */
.logo span{display:inline-block;width:.26em;height:.26em;margin:.1em 0 0 .1em;border-radius:50%;background:var(--accent);color:transparent;font-size:inherit;vertical-align:top;overflow:hidden}
.header nav{flex-wrap:wrap;justify-content:center;gap:4px}
.header nav a{padding:8px 12px;border-radius:8px;color:var(--ink-2);font-size:14px;font-weight:600;white-space:nowrap}
.header nav a:hover{background:#e7e9ee;color:var(--ink)}
.header nav .nav-active{background:var(--surface);box-shadow:0 0 0 1px var(--line);color:var(--ink)}
.guest-account{display:flex;align-items:center;gap:12px;white-space:nowrap}
.guest-account>.text-button{color:var(--ink-2);font-size:14px;font-weight:600}
.user-account a,.user-account button{font-weight:600}
.button{gap:12px;padding:14px 22px;border-radius:12px;background:var(--accent-strong);color:#fff;font-weight:700;transition:background .15s}
.button:hover{background:var(--accent-hover);transform:none}
.button:active{transform:translateY(1px)}
.button.small{padding:10px 16px;border-radius:10px;font-size:14px}

/* Page heading. */
.intro{padding:28px 0 30px}
.intro .eyebrow{color:var(--muted);font-size:11px;letter-spacing:.14em}
.intro h1{margin-bottom:10px;font-size:44px;font-weight:700;letter-spacing:-.035em;line-height:1.08}
.intro h1>span{color:var(--accent)}
.intro p:last-child{font-size:16px}
.date-stamp{gap:5px;padding:14px 20px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);font-size:12px}
.date-stamp strong{font-size:18px}
.date-stamp>span:first-child{font-size:10px;letter-spacing:.1em}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0 0 14px;color:var(--muted);font-size:13px}
.breadcrumbs a{color:var(--ink-2);text-decoration:underline;text-underline-offset:3px}

/* Game cards: the strip of recent games and the full catalogue. */
.play-layout{grid-template-columns:minmax(0,1fr) 270px;gap:24px;align-items:start}
.game-main{min-width:0}
.game-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:24px;padding:0;border:0;background:transparent}
.game-tabs a{position:relative;display:flex;align-items:center;justify-content:flex-start;gap:12px;min-height:88px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);font-family:inherit;text-decoration:none;white-space:normal;transition:border-color .15s,box-shadow .15s,transform .15s}
.game-tabs a:hover{border-color:var(--line-strong);box-shadow:0 6px 16px rgb(16 24 40/.08);transform:translateY(-1px)}
.game-tabs a:focus-visible{outline:3px solid var(--accent-strong);outline-offset:3px}
.game-tabs [aria-current=page]{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent);color:var(--ink)}
.game-tabs .card-icon{display:grid;place-items:center;flex-shrink:0;width:44px;height:44px;margin:0;border-radius:12px;background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--line);color:var(--ink-2);font-size:24px}
.game-tabs .card-text{margin:0;color:var(--ink);font-size:14px;font-weight:700;text-align:left}
.card-text small{display:block;margin-top:4px;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.06em}
.game-tabs .card-badge{position:absolute;top:-8px;right:10px;padding:2px 7px;border-radius:6px;background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent-line);color:var(--accent-strong);font-size:9px;font-weight:700;letter-spacing:.06em}
.game-tabs .online-count{display:block;margin:6px 0 0;color:#177245;font-size:10px;font-weight:700;letter-spacing:0;line-height:1.4}
.game-tabs .online-count[hidden],.game-online[hidden]{display:none}
/* Live player count in the arena header: one line no taller than the header, so it never moves the board. */
.game-online{min-width:0;padding:4px 9px;border-radius:6px;background:#e6f6ec;color:#177245;font-size:10px;font-weight:700;letter-spacing:0;line-height:1.4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.game-strip-section{min-width:0;margin-bottom:20px}
.game-strip-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.game-strip-heading h2{margin:0;font-size:16px}
.game-see-all{padding:12px 0;color:var(--accent-strong);font-size:13px;font-weight:700}
.game-strip-controls{display:flex;justify-content:flex-end;gap:8px;min-height:0;margin:0 0 3px}
.game-strip-controls button{width:44px;height:44px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--ink-2);font-size:20px;cursor:pointer}
.game-strip-controls button:hover:not(:disabled){background:var(--surface-2)}
.game-strip-controls button:disabled{opacity:.35;cursor:default}
.game-strip-controls button[hidden]{display:none}
.game-tabs.game-strip{display:flex;flex-wrap:nowrap;gap:12px;margin:0;padding:12px 3px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x proximity;scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}
.game-tabs.game-strip>a{flex:0 0 205px;min-height:94px;padding:15px 12px;scroll-snap-align:start}
.game-tabs.game-strip .card-text{font-size:13px}
.game-tabs.game-strip:focus-visible,.game-strip-controls button:focus-visible,.game-see-all:focus-visible{outline:3px solid var(--accent-strong);outline-offset:3px}
.game-tabs.game-catalog-grid{gap:18px 14px;padding-top:12px}
.catalog-count{color:var(--muted);font-size:14px}

/* Arena: the frame around every game. */
.arena{min-height:465px;padding:22px 26px;border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow);overflow:visible}
.arena-top{padding-bottom:16px;border-bottom:1px solid var(--line);color:var(--muted);font-size:12px;letter-spacing:.08em}
#game-label{color:var(--ink-2);text-transform:uppercase}
.pill{padding:4px 9px;border:1px solid var(--line);border-radius:6px;background:var(--surface-2);color:var(--muted);font-size:10px;letter-spacing:.06em}
.arena-bottom{padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:12px;font-weight:500;letter-spacing:0}
.arena-bottom span:last-child{color:#98a1b0;font-size:10px;letter-spacing:.1em}
#play-area{min-height:335px}
.bolt{display:grid;place-items:center;width:84px;height:84px;border-radius:22px;background:var(--accent-soft);color:var(--accent);font-size:42px;font-weight:700;text-shadow:none;transform:none}
.play-button{min-width:200px;border-radius:12px;background:var(--accent-strong);box-shadow:none;font-size:16px}
.game-title{color:var(--ink);font-weight:700;letter-spacing:-.02em}
.game-description,.game-status,.result-caption{color:var(--muted)}
.arena.ready{border-color:#86d9a3;background:#e3f8ea}
.arena.waiting{border-color:#f3d48a;background:#fff6dd}
.result-value{color:var(--accent);letter-spacing:-.04em}
.result-actions .text-button,.auth-toggle,.retry{color:var(--accent-strong)}
.tile{border-color:var(--line-strong);background:var(--surface);box-shadow:none;color:var(--ink)}
.tile.lit{border-color:var(--accent);background:var(--accent);box-shadow:0 0 0 4px rgb(232 89 12/.18);color:#fff}
/* Mode picker on the start screens of tic-tac-toe and checkers. */
.ttt-modes{display:flex;gap:8px;width:100%;max-width:400px;margin:0 0 22px}
.ttt-modes button{flex:1;padding:12px 14px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--ink-2);font-size:14px;font-weight:600}
.ttt-modes small{display:block;margin-top:4px;font-size:11px;font-weight:400}
.ttt-modes [aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent);color:var(--accent-hover)}
.result-auth-invite{width:100%;max-width:620px;margin:24px auto 0;padding:20px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2);color:var(--ink-2);text-align:center;box-sizing:border-box}
.result-auth-invite h3{margin:0 0 10px;color:var(--ink);font-size:1.1rem}
.result-auth-invite p{margin:0 0 10px;line-height:1.7}
.result-auth-invite .text-button{padding:3px;color:var(--accent-strong);font:inherit;font-weight:700;text-decoration:underline}
.result-auth-invite small{display:block;color:var(--muted);line-height:1.5}

/* Side column next to the arena. */
.side{padding-top:115px}
.challenge{padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow)}
.challenge .eyebrow{color:var(--muted);font-size:10px;letter-spacing:.12em}
.challenge h2{margin:6px 0 10px;color:var(--ink);font-size:22px;letter-spacing:-.02em;line-height:1.2}
.challenge p{margin-bottom:20px;color:var(--muted);font-size:14px;line-height:1.6}
.mini-line{align-items:center;border-color:var(--line);color:var(--muted);font-size:13px}
.mini-line strong{color:var(--ink);font-size:16px}
.account-note{padding:18px;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
.account-note .note-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:8px;background:var(--accent-soft);color:var(--accent-strong);font-size:18px}
.account-note p{font-size:13px;line-height:1.55}

/* Rankings and text pages. */
.section-heading h2{font-size:28px;font-weight:700;letter-spacing:-.025em}
.section-heading h2 span{font-size:24px}
.section-heading .eyebrow{color:var(--muted);letter-spacing:.12em}
.period-tabs{gap:2px;padding:3px;border:0;border-radius:10px;background:#e7e9ee}
.period-tabs button{padding:8px 18px;border-radius:8px;color:var(--ink-2);font-weight:600}
.period-tabs .selected{background:var(--surface);box-shadow:0 1px 2px rgb(16 24 40/.14);color:var(--ink)}
/* Long ranking names must not push the page wider than a phone screen. */
.ranking-meta label{display:flex;align-items:center;gap:10px;min-width:0;max-width:100%}
.ranking-meta select{min-width:0;max-width:100%;margin-left:0;padding:10px 30px 10px 12px;border-color:var(--line-strong);border-radius:10px}
.table-wrap{border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
th{background:var(--surface-2);color:var(--muted);font-weight:600;letter-spacing:.08em}
td{border-color:#eef0f3}
.avatar{border-radius:8px;background:#e7e9ee;color:var(--ink-2)}
.me-row{background:var(--accent-soft)}
.rank-medal{color:var(--accent-strong)}
.ranking-foot{color:var(--muted);font-size:12px;line-height:1.6}
.global-points-rules{margin-top:18px;padding:16px 20px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--ink-2);font-size:14px;line-height:1.7}
.global-points-rules summary{cursor:pointer;font-weight:700}
.global-points-rules ul{padding-left:22px}
.global-points-rules p{margin:12px 0}
.site-page .ranking-section{margin-top:0}
.site-page .how-it-works{max-width:880px;margin:0 auto;padding:30px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.how-it-works li{margin-bottom:20px;line-height:1.75}
.how-it-works a,.game-guide a{color:var(--accent-strong);text-decoration:underline;text-underline-offset:3px}
.page-back{margin:32px 0 48px}
.page-back .button{background:var(--surface);box-shadow:inset 0 0 0 1px var(--line-strong);color:var(--ink)}
.page-back .button:hover{background:var(--surface-2)}
.game-guide{margin:32px 0;padding:26px;border:1px solid var(--line);border-radius:16px;background:var(--surface);line-height:1.75}
.game-guide h2{margin:0 0 16px;font-size:22px;letter-spacing:-.02em;line-height:1.3}
.game-guide h3{margin:24px 0 8px;font-size:18px}
.game-guide p{max-width:85ch;color:var(--ink-2);font-size:15px}
.related-games{display:flex;gap:12px 24px;flex-wrap:wrap;padding-left:20px}
.related-games li{font-size:14px}

/* Footer, dialogs, forms and the toast. */
footer{border-top:1px solid var(--line)}
footer .logo{color:var(--ink);font-size:22px}
dialog{border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow-lg)}
dialog::backdrop{background:rgb(15 17 22/.55)}
dialog h2{font-weight:700;letter-spacing:-.02em}
.close{width:40px;height:40px;border-radius:10px;line-height:1}
.close:hover{background:var(--surface-2);color:var(--ink)}
form .button{background:var(--accent-strong)}
input{border-color:var(--line-strong);border-radius:10px;background:var(--surface)}
input:focus-visible,select:focus-visible{border-color:var(--accent);outline:3px solid rgb(232 89 12/.25);outline-offset:0}
#toast{border:0;border-radius:12px;background:var(--ink);box-shadow:var(--shadow-lg)}

/* Sudoku: start screen. */
.sudoku-welcome{display:flex;align-items:center;gap:32px;width:100%;padding:22px 2px 26px;text-align:left}
.sudoku-art{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;flex-shrink:0;width:210px;height:210px;margin:16px;padding:12px;border:1px solid var(--line);border-radius:20px;background:var(--surface-2)}
.sudoku-art>span{display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font-size:30px;font-weight:700}
.sudoku-art>span:nth-child(5){border-color:var(--accent);background:var(--accent);color:#fff}
.sudoku-setup{flex:1;min-width:0}
.new-label{color:var(--muted);font-size:10px;font-weight:700;letter-spacing:.12em}
.sudoku-setup h2{margin:12px 0;font-size:46px;font-weight:700;letter-spacing:-.04em;line-height:1}
.orange-dot{color:var(--accent)}
.sudoku-setup>p{margin:0 0 19px;color:var(--muted);font-size:15px;line-height:1.6}
.difficulty-picker{display:flex;gap:8px;margin:0;padding:0;border:0}
.difficulty-picker legend{margin-bottom:10px;font-size:13px;font-weight:700}
.difficulty-picker button{flex:1;padding:10px 11px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--ink-2);font-size:13px;font-weight:600;white-space:nowrap}
.difficulty-picker button span{display:block;margin-bottom:2px;font-size:15px}
.difficulty-picker button[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent);color:var(--accent-hover)}
.sudoku-setup .difficulty-description{min-height:32px;margin:10px 0;font-size:13px;line-height:1.45}
.sudoku-setup .play-button{width:100%;justify-content:space-between}
.free-note{display:block;margin-top:14px;color:var(--muted);font-size:12px;text-align:center}

/* Sudoku: board and controls. Given digits are dark, the player's digits use the accent colour. */
.sudoku-game{width:100%;padding:17px 0 7px}
.sudoku-topline{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.sudoku-topline strong{font-size:22px;font-weight:700}
.level-tag{margin-left:10px;padding:3px 9px;border-radius:6px;background:#e7e9ee;color:var(--ink-2);font-size:12px;font-weight:600}
.sudoku-clock{color:var(--ink-2);font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.sudoku-workspace{display:grid;grid-template-columns:minmax(0,1fr) 176px;gap:23px;align-items:start;max-width:720px;margin:auto}
.sudoku-grid{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));width:100%;max-width:450px;aspect-ratio:1;border:2px solid var(--ink);border-radius:10px;background:var(--ink);overflow:hidden}
.sudoku-cell{display:flex;align-items:center;justify-content:center;min-width:0;min-height:0;padding:0;border:0;border-right:1px solid #dfe3e8;border-bottom:1px solid #dfe3e8;border-radius:0;background:var(--surface);color:var(--accent-strong);font-size:clamp(18px,2.4vw,27px);font-weight:600;touch-action:manipulation}
.sudoku-cell:nth-child(3n){border-right:2px solid var(--ink)}
.sudoku-cell:nth-child(9n){border-right:0}
.sudoku-cell:nth-child(n+19):nth-child(-n+27),.sudoku-cell:nth-child(n+46):nth-child(-n+54){border-bottom:2px solid var(--ink)}
.sudoku-cell:nth-child(n+73){border-bottom:0}
.sudoku-cell.given{background:var(--surface-2);color:var(--ink);font-weight:700}
.sudoku-cell.peer{background:#eceff3}
.sudoku-cell.same{background:#ffe1cc}
.sudoku-cell.chosen{background:#ffcba6!important;box-shadow:inset 0 0 0 2px var(--accent)}
.sudoku-cell.conflict{background:#fde8e8;color:#c81e1e}
.sudoku-cell:focus-visible{outline:0;box-shadow:inset 0 0 0 3px var(--accent-hover)}
.pencil-grid{display:grid;grid-template-columns:repeat(3,1fr);align-items:center;width:100%;height:100%;padding:2px;color:var(--muted);font-size:10px;font-weight:400;line-height:1}
.controls-title{margin:3px 0 12px;color:var(--muted);font-size:10px;font-weight:700;letter-spacing:.12em;text-align:left}
.number-pad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.number-pad button{height:47px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--ink);font-size:22px;font-weight:600}
.number-pad button:hover{background:#eceff3}
.number-pad button.number-complete{border-color:var(--line);background:var(--surface-2);color:#aab1bd}
.sudoku-tools{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:19px}
.sudoku-tools button{display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 2px;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);color:var(--ink-2);font-size:11px;font-weight:600}
.sudoku-tools button:hover:not(:disabled){background:#eceff3}
.sudoku-tools button span{font-size:20px;line-height:1.2}
.sudoku-tools button[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-hover)}
.sudoku-tip{margin:14px 0;color:var(--muted);font-size:12px;line-height:1.6}
.new-board{width:100%;padding:9px;border:1px solid var(--line-strong);border-radius:10px;color:var(--ink-2);font-size:13px;font-weight:600}
.new-board:hover{background:#eceff3}
.sudoku-feedback{min-height:36px;margin:16px 0 0;color:var(--muted);font-size:13px;line-height:1.55}
.sudoku-arena #play-area{width:100%}

@media(min-width:1500px){.arena{min-height:480px}.intro{padding-top:32px;padding-bottom:35px}}
@media(max-width:1100px){
.play-layout{grid-template-columns:minmax(0,1fr) 230px;gap:18px}
.side{padding-top:110px}
.challenge{padding:20px}
.challenge h2{font-size:20px}
.date-stamp{display:none}
.sudoku-welcome{gap:15px}
.sudoku-art{width:155px;height:155px;margin:10px;padding:10px;gap:4px}
.sudoku-art>span{border-radius:7px;font-size:22px}
.sudoku-setup h2{font-size:42px}
.sudoku-workspace{grid-template-columns:minmax(0,1fr) 144px;gap:15px}
.number-pad button{height:39px;font-size:19px}
.sudoku-cell{font-size:22px}
.sudoku-controls .sudoku-tip{font-size:11px}
}
@media(max-width:1000px){.game-tabs.game-catalog-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:850px){
.play-layout{grid-template-columns:1fr}
.side{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding-top:0}
.challenge h2 br{display:none}
.challenge p{margin:10px 0;font-size:13px}
.account-note{align-items:center}
.intro h1{font-size:40px}
.sudoku-welcome{gap:45px;padding:25px 18px}
.sudoku-art{width:210px;height:210px;padding:12px;gap:6px}
.sudoku-art>span{font-size:30px}
.sudoku-workspace{grid-template-columns:minmax(0,1fr) 176px;gap:23px}
.number-pad button{height:47px;font-size:22px}
.pencil-grid{font-size:11px}
}
@media(max-width:760px){
.header{height:auto!important;flex-wrap:wrap;gap:12px;padding-top:14px;padding-bottom:14px}
.header nav{order:3;width:100%}
.header #account{margin-left:auto}
.game-tabs.game-catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.site-page .how-it-works{padding:22px 18px}
.how-it-works ul{padding-left:20px}
}
@media(max-width:620px){
.header,main,footer{padding-left:16px;padding-right:16px}
.header{gap:10px}
.header .logo{font-size:27px}
.header nav{gap:2px}
.header nav a{padding:6px 8px;font-size:12px}
.header .button.small{padding:9px 12px;font-size:12px}
.guest-account>.text-button{font-size:13px}
.user-account{flex-direction:column;align-items:flex-end;gap:3px}
.intro{padding:22px 0 25px}
.intro .eyebrow{font-size:10px;letter-spacing:.1em}
.intro h1{font-size:33px;letter-spacing:-.03em}
.intro p:last-child{font-size:14px}
.arena{min-height:410px;padding:17px 14px;border-radius:16px}
.arena-top{padding-bottom:13px;font-size:11px}
.arena-top:has(.game-online:not([hidden])) #game-badge{display:none}
.arena-bottom{font-size:11px}
.pill{padding:3px 7px;font-size:9px}
.side{grid-template-columns:1fr}
.challenge{display:none}
.account-note{padding:16px}
.account-note strong{font-size:14px}
.account-note p{margin-top:5px}
.section-heading h2{font-size:26px}
.section-heading .eyebrow{font-size:10px}
.ranking-meta>span,.ranking-foot{font-size:12px}
.period-tabs button{font-size:13px}
.game-guide{padding:20px 16px}
.game-guide h2{font-size:20px}
.related-games{display:block}
.related-games li{margin:8px 0}
.sudoku-welcome{flex-direction:column;gap:18px;padding:20px 4px}
.sudoku-art{width:138px;height:138px;margin:5px 0 10px;padding:9px;gap:4px;border-radius:16px}
.sudoku-art>span{font-size:20px}
.sudoku-setup{width:100%;max-width:350px;text-align:center}
.sudoku-setup h2{margin:8px 0;font-size:40px}
.sudoku-setup>p{margin-bottom:15px;font-size:14px}
.difficulty-picker legend{width:100%}
.difficulty-picker button{padding:8px}
.difficulty-picker button span{display:inline-block;margin:0 5px 0 0}
.sudoku-setup .difficulty-description{min-height:16px;font-size:12px}
.sudoku-setup .play-button{padding:13px 22px}
.free-note{font-size:11px}
.sudoku-workspace{grid-template-columns:1fr;gap:14px;max-width:420px}
.sudoku-grid{max-width:none}
.sudoku-cell{font-size:24px}
.pencil-grid{font-size:10px}
.sudoku-topline strong{font-size:20px}
.sudoku-clock{font-size:14px}
.sudoku-controls .controls-title,.sudoku-controls .sudoku-tip{display:none}
.number-pad{grid-template-columns:repeat(9,minmax(0,1fr));gap:4px}
.number-pad button{height:40px;padding:0;border-radius:8px;font-size:19px}
.sudoku-tools{grid-template-columns:repeat(4,1fr);gap:7px;margin-top:13px}
.sudoku-tools button{padding:7px 0}
.sudoku-tools button span{font-size:19px}
.new-board{width:auto;margin-top:12px;padding:8px 15px}
.sudoku-feedback{margin-top:12px;font-size:12px}
}
@media(max-width:480px){.game-tabs.game-strip>a{flex-basis:185px}.game-tabs.game-catalog-grid{grid-template-columns:1fr}.game-strip-heading h2{font-size:14px}}
@media(max-width:360px){.header{gap:10px}.guest-account{gap:8px}}