@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{--ink:#12181A;--ink-raised:#1B2326;--ink-card:#212B2E;--line:#33403F;--court-teal:#1B4B45;--court-teal-light:#2A6359;--ball:#9CBF8A;--ball-dim:#7A9A6C;--on-ball:#14210F;--text:#F1F5F2;--text-dim:#94A3A0;--coral:#FF6B4A;--font-body:'Inter',system-ui,sans-serif;--font-display:'Space Grotesk',system-ui,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--ink);color:var(--text);font-family:var(--font-body)}button{font:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}button:focus-visible,canvas:focus-visible{outline:2px solid var(--ball);outline-offset:-3px}button[hidden],div[hidden]{display:none!important}.game{position:relative;width:100%;height:100dvh;min-height:240px;overflow:hidden}canvas{display:block;width:100%;height:100%;touch-action:none;user-select:none}.hud{position:absolute;inset:max(14px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) auto max(16px,env(safe-area-inset-left));display:flex;justify-content:space-between;align-items:flex-start;pointer-events:none}.hud>*{pointer-events:auto}.hud-button{height:44px;background:#12181acc;color:var(--text);border:1px solid #9cbf8a33;border-radius:12px;display:flex;align-items:center;justify-content:center;gap:9px;padding:0 13px;backdrop-filter:blur(10px);font-size:12px}.spin-control{position:relative}.spin-icon{color:var(--ball);font-size:21px}.chevron{color:var(--text-dim);font-size:14px}.spin-menu{position:absolute;left:0;top:52px;min-width:158px;padding:6px;background:var(--ink-raised);border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px #0005;z-index:3}.spin-menu button{display:flex;justify-content:space-between;align-items:center;width:100%;min-height:46px;padding:10px 12px;border:0;background:none;color:var(--text-dim);text-align:left;border-radius:7px;font-size:12px}.spin-menu button[aria-pressed=true]{background:var(--court-teal);color:var(--ball)}.spin-menu button:hover{background:var(--ink-card)}.spin-menu button span{font-size:19px}.scoreboard{position:absolute;left:50%;transform:translateX(-50%);text-align:center;pointer-events:none;padding:0 15px;background:radial-gradient(ellipse,#12181a80,transparent 75%)}.scoreboard strong{display:block;font-family:var(--font-display);font-size:30px;font-weight:500;line-height:1.15}.scoreboard>span{display:block;color:var(--ball);font-size:9px;letter-spacing:4px;margin-top:6px}.menu-toggle{width:44px;padding:0;font-size:17px;line-height:1}.wordmark{position:absolute;bottom:max(13px,env(safe-area-inset-bottom));left:0;right:0;text-align:center;font-family:var(--font-display);font-size:15px;letter-spacing:-.7px;font-weight:600;color:#f1f5f285;pointer-events:none}.wordmark>span{color:var(--ball)}.wordmark b{font-family:var(--font-body);font-size:8px;letter-spacing:2px;margin-left:8px;font-weight:500;color:#9cbf8aa6}.toast{position:absolute;top:43%;left:16px;right:16px;text-align:center;font-family:var(--font-display);font-weight:500;font-size:clamp(18px,3vw,30px);color:var(--text);pointer-events:none;opacity:0;transition:opacity .15s;text-shadow:0 2px 15px #12181a}.toast.visible{opacity:1}.overlay{position:absolute;inset:0;background:#12181a88;backdrop-filter:blur(5px);display:grid;place-items:center;padding:28px;z-index:4}.panel{width:min(320px,100%);text-align:center}.eyebrow{color:var(--ball);font-size:10px;letter-spacing:2px;font-weight:600}.panel h1,.panel h2{font-family:var(--font-display);font-weight:500;font-size:clamp(45px,8vh,72px);letter-spacing:-3px;line-height:1.02;margin:27px 0 22px}.panel h1 em{font-family:Georgia,serif;color:var(--ball);font-weight:400}.tagline{font-size:13px;color:var(--text-dim);margin:0 0 30px}.primary-button{min-height:52px;width:100%;display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border:0;background:var(--ball);color:var(--on-ball);border-radius:12px;font-weight:600;font-size:14px}.primary-button:hover{background:#b0cf9f}.primary-button span{font-size:22px}.text-button{background:none;border:0;min-height:44px;color:var(--text-dim);font-size:12px;padding:12px 15px}.text-button:hover{color:var(--text)}.panel-footnote{font-size:9px;color:var(--text-dim);letter-spacing:.7px;margin-top:18px}.panel-stats{display:flex;gap:12px;justify-content:center;margin:22px 0;color:var(--text-dim);font-size:12px}.panel-stats strong{color:var(--ball);font-weight:600}.menu-options{display:flex;justify-content:center;flex-wrap:wrap;gap:3px;margin-top:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}dialog{position:fixed;max-height:85dvh;width:min(400px,calc(100% - 32px));margin:auto;padding:30px 26px;background:var(--ink-raised);color:var(--text);border:1px solid var(--line);border-radius:18px;z-index:10}dialog::backdrop{background:#12181acc;backdrop-filter:blur(6px)}dialog h2{font:500 32px/1.1 var(--font-display);letter-spacing:-1px;margin:18px 0 25px}dialog dt{color:var(--ball);font-size:13px;font-weight:600;margin-top:18px}dialog dd{margin:6px 0 0;font-size:12px;line-height:1.7;color:var(--text-dim)}.close-help{position:absolute;top:8px;right:8px;width:44px;height:44px;border:0;background:none;color:var(--text-dim);font-size:25px}.desktop-help{border-top:1px solid var(--line);padding-top:18px;margin-top:24px;font-size:11px;line-height:1.7;color:var(--text-dim)}@media(max-height:480px){.panel h1,.panel h2{font-size:40px;margin:12px 0}.tagline{margin-bottom:15px}.panel-footnote{display:none}.wordmark{font-size:12px}.scoreboard strong{font-size:24px}}@media(prefers-reduced-motion:reduce){.toast{transition:none}}
.brand-name{font-family:var(--font-display);font-weight:700;letter-spacing:-.01em;color:var(--text)}.brand-name>span{color:var(--ball)}.eyebrow:has(.brand-name){text-transform:none;letter-spacing:0;font-family:var(--font-display);font-weight:500;font-size:19px;color:var(--text-dim)}.wordmark .brand-name{font-size:15px}.wordmark b{font-family:var(--font-display);font-size:13px;letter-spacing:0;font-weight:500;color:var(--text-dim);margin-left:5px}
.wordmark>.brand-name{color:var(--text)}
.spin-options{display:flex;gap:4px;align-items:center}.spin-options button{flex:0 0 auto;min-width:44px;min-height:44px;padding:7px 8px;background:#12181aee;color:var(--text-dim);border:1px solid var(--line);border-radius:10px;font-size:11px;line-height:1.3;backdrop-filter:blur(10px)}.spin-options button[aria-pressed=true]{background:var(--ball);color:var(--on-ball);border-color:var(--ball)}.spin-options kbd{display:none;font-family:var(--font-body);font-size:9px;opacity:.7;margin-top:2px}.spin-options button:hover{border-color:var(--ball)}@media(pointer:fine){.spin-options kbd{display:block}}@media(max-width:520px){.scoreboard{left:auto;right:52px;top:0;transform:none;width:52px;padding:0 3px}.scoreboard strong{font-size:24px}.scoreboard>span{font-size:8px;letter-spacing:2px}.hud{left:max(10px,env(safe-area-inset-left));right:max(10px,env(safe-area-inset-right))}}

#leaderboard{width:min(380px,calc(100vw - 24px));padding:26px 22px;max-height:90dvh;overflow-y:auto}#leaderboard h2{font-family:var(--font-display);font-size:29px;letter-spacing:-1px;margin:16px 0 8px}.board-period,.board-message{font-size:11px;color:var(--text-dim);line-height:1.5}.arcade-board{list-style:none;padding:0;margin:18px 0;font-family:ui-monospace,Consolas,monospace;font-weight:700;letter-spacing:1px}.arcade-board li{display:grid;grid-template-columns:30px 1fr auto;gap:10px;padding:7px 0;border-bottom:1px solid #33403f66;font-size:15px}.arcade-board li:first-child{color:var(--ball)}.arcade-board li span:first-child{opacity:.55}#leaderboard form{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}#leaderboard form[hidden]{display:none}#leaderboard label{font-size:11px;letter-spacing:1px;color:var(--ball)}.name-entry{display:flex;gap:8px;margin-top:10px}.name-entry input{min-width:0;width:100%;font:700 20px ui-monospace,monospace;letter-spacing:2px;text-transform:uppercase;border:1px solid var(--line);border-radius:7px;background:var(--ink);color:var(--text);padding:10px}.name-entry button{min-height:44px;flex-shrink:0;border:0;border-radius:7px;background:var(--ball);color:var(--on-ball);padding:10px;font-size:12px}.name-entry button:disabled{opacity:.45}#name-hint,#name-error{font-size:11px;line-height:1.5}#name-hint{color:var(--text-dim)}#name-error{color:#ffad99;min-height:17px}input:focus-visible{outline:2px solid var(--ball)}

/* v0.10.1: visible menu actions and score entry, with a clear court during play. */
.overlay{overflow-y:auto;place-items:unsafe center;padding:24px}.panel{margin:auto}
.secondary-button{display:flex;align-items:center;justify-content:center;min-height:50px;width:100%;margin-top:10px;padding:13px 16px;border:1px solid var(--ball);border-radius:12px;background:var(--court-teal);color:var(--text);font-size:14px;font-weight:600;line-height:1.4}
.secondary-button:hover{background:var(--court-teal-light)}.secondary-button:active,.primary-button:active{transform:translateY(1px)}
.menu-options{gap:8px}.menu-options .secondary-button{margin-top:0}.primary-button{gap:12px;text-align:left;font-size:15px}.primary-button span{flex-shrink:0}
#leaderboard form{margin:18px 0 22px;padding:16px;border:1px solid var(--ball);border-radius:12px;background:var(--court-teal)}#leaderboard label{color:var(--text);font-size:12px;font-weight:700;letter-spacing:.6px}
.name-entry{flex-direction:column;gap:10px}.name-entry input{min-height:48px;border-color:var(--ball)}.name-entry button{min-height:50px;font-size:15px;font-weight:700}.name-entry button:hover:enabled{background:#b0cf9f}.name-entry button:disabled{opacity:1;background:#455944;color:#dce7d8;cursor:not-allowed}#leaderboard #name-hint{color:var(--text);margin-bottom:6px}#name-error{margin-bottom:0}dialog dd{color:#bfccc7}
@media(max-height:480px){.overlay{padding:16px}.panel h1,.panel h2{font-size:32px;margin:8px 0}.panel-stats{margin:10px 0}.secondary-button{margin-top:8px}.menu-options{margin-top:8px}}

.primary-button{justify-content:center;text-align:center}.quick-start{list-style:none;margin:0 0 24px;padding:0;text-align:left}.quick-start li{padding:12px 0;border-bottom:1px solid var(--line);font-size:15px;line-height:1.5;color:var(--text)}.quick-start strong{color:var(--ball)}#first-play .primary-button{margin-top:16px}#first-play{overflow-y:auto}

/* v0.11.0: mobile/tablet play and a share action at the bottom of results. */
.desktop-notice .hud{display:none}.device-hint{font-size:14px;line-height:1.7;margin:0 0 24px;color:var(--text)}.device-hint a{color:var(--ball);font-weight:600}.desktop-notice .tagline{font-size:16px;line-height:1.6;color:var(--text)}.physics-note{font-size:12px;line-height:1.7;color:var(--text-dim);border-top:1px solid var(--line);padding-top:18px}
.share-button{margin-top:22px;text-align:center}.share-status{font-size:12px;line-height:1.5;color:var(--ball);margin:8px 0 0}.share-status:empty{display:none}#share-fallback{margin-top:14px;text-align:left}#share-fallback label{font-size:12px;line-height:1.5}#share-text{width:100%;margin-top:8px;padding:12px;background:var(--ink);border:1px solid var(--ball);border-radius:8px;color:var(--text);font:14px/1.5 var(--font-body);resize:vertical}.spin-options kbd{display:none}

.powered-by{position:absolute;bottom:0;left:0;right:0;z-index:5;margin:0;padding:12px 16px max(16px,env(safe-area-inset-bottom));text-align:center;color:var(--text-dim);font-size:12px;line-height:1.5;pointer-events:none;background:linear-gradient(transparent,#12181acc)}.powered-by a{color:inherit;text-decoration:underline;text-underline-offset:3px;pointer-events:auto;padding:8px 4px;margin:-8px -4px}.overlay{padding-bottom:64px}

/* Rally 0.14.0: optional guided practice and an explicit scored-game choice. */
.choice-copy,.choice-scoring{font-size:14px;line-height:1.6;color:var(--text)}.choice-scoring{font-size:12px;color:var(--text-dim);margin-bottom:0}.practising .spin-options,.practising .scoreboard{visibility:hidden}.warmup-ui{position:absolute;top:max(68px,env(safe-area-inset-top));left:16px;right:16px;width:min(400px,calc(100% - 32px));margin:0 auto;padding:14px 16px;border:1px solid var(--ball);border-radius:14px;background:#12181af2;z-index:3;text-align:center}.warmup-ui[hidden],#warmup-guide[hidden]{display:none}.warmup-ui .eyebrow{margin:0 0 8px;line-height:1.5}.warmup-ui h2{font:600 20px/1.2 var(--font-display);margin:0 0 8px}.warmup-ui p:not(.eyebrow){font-size:14px;line-height:1.5;margin:0}.warmup-ui .primary-button{margin-top:12px}.warmup-ui .text-button{color:var(--text);padding:10px 8px;min-height:44px;font-size:12px;text-decoration:underline;text-underline-offset:3px}
#warmup-guide{position:absolute;inset:0;pointer-events:none;z-index:2;overflow:hidden}#warmup-guide svg{position:absolute;inset:0;width:100%;height:100%}#warmup-swipe-line{fill:none;stroke:#f1f5f280;stroke-width:2;stroke-dasharray:5 8}#warmup-finger{position:absolute;left:0;top:0;width:28px;height:28px;font-size:25px;line-height:1;filter:drop-shadow(0 2px 3px #000);animation:practice-swipe 2.6s ease-in-out infinite}#warmup-target{position:absolute;transform:translate(-50%,-50%);width:84px;height:48px;border:2px solid var(--ball);border-radius:50%;background:#9cbf8a30;color:var(--text);font:600 12px var(--font-body);display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 4px #12181a88}#warmup-guide.move-guide #warmup-swipe-line,#warmup-guide.step-ready{display:none}#warmup-guide.move-guide #warmup-finger{animation:practice-tap 1.8s ease-in-out infinite}
@keyframes practice-swipe{0%,15%{transform:translate(var(--from-x),var(--from-y));opacity:0}25%{opacity:1}75%{transform:translate(var(--to-x),var(--to-y));opacity:1}95%,100%{transform:translate(var(--to-x),var(--to-y));opacity:0}}@keyframes practice-tap{0%,100%{transform:translate(var(--to-x),var(--to-y)) scale(1);opacity:.5}50%{transform:translate(var(--to-x),var(--to-y)) scale(.85);opacity:1}}
@media(max-height:500px) and (min-width:600px){.warmup-ui{top:64px;left:12px;right:auto;width:220px;margin:0;padding:10px}.warmup-ui h2{font-size:17px}.warmup-ui p:not(.eyebrow){font-size:13px}.warmup-ui .eyebrow{font-size:9px}.warmup-ui .primary-button{font-size:13px;padding:10px;min-height:48px}}
@media(prefers-reduced-motion:reduce){#warmup-finger{animation:none;transform:translate(var(--to-x),var(--to-y))}#warmup-swipe-line{stroke-dasharray:none}}

/* Keep the deep landing target visible and the court clear for a starting swipe. */
.warmup-ui{top:max(8px,env(safe-area-inset-top));left:12px;right:64px;width:min(400px,calc(100% - 76px));padding:10px 12px}.warmup-ui .eyebrow{font-size:9px;margin-bottom:5px}.warmup-ui h2{font-size:18px;margin-bottom:5px}.warmup-ui p:not(.eyebrow){font-size:13px;line-height:1.4}#warmup-exit{position:fixed;bottom:max(48px,calc(env(safe-area-inset-bottom) + 40px));left:50%;transform:translateX(-50%);white-space:nowrap;border:1px solid var(--line);border-radius:8px;background:#12181af2;padding:10px 14px}
@media(max-height:500px) and (min-width:600px){.warmup-ui{top:64px;left:12px;right:auto;width:220px}#warmup-exit{position:static;transform:none;white-space:normal;margin-top:8px}}

.mode-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}.mode-options button{min-height:76px;border:1px solid var(--line);border-radius:12px;background:var(--ink-raised);color:var(--text);padding:12px 8px;text-align:center}.mode-options button[aria-pressed=true]{border-color:var(--ball);background:var(--court-teal);box-shadow:inset 0 0 0 1px var(--ball)}.mode-options strong,.mode-options span{display:block}.mode-options span{font-size:11px;line-height:1.5;margin-top:6px;color:var(--text-dim)}.mode-options button:disabled{cursor:default}.scoreboard #mode-label{display:block;font-size:10px;line-height:1.2;letter-spacing:.4px;color:var(--ball)}.board-section h3{font-family:var(--font-display);font-size:20px;margin:24px 0 8px}.board-section .arcade-board{margin-top:0}

.free-practice .warmup-ui{width:180px;right:auto}.free-practice #warmup-exit,.serving-practice #warmup-exit{position:static;transform:none;margin-top:6px;white-space:normal}.free-practice .warmup-ui .primary-button{font-size:13px;padding:10px 8px}

/* Practice coaching occupies its own space, never the playing court. */
.practising #court{height:calc(100% - var(--coach-space,190px));width:100%}
.practising .warmup-ui,.practising.free-practice .warmup-ui{top:auto;bottom:68px;left:12px;right:12px;width:auto;margin:0;padding:10px 12px}
.practising #warmup-next{display:inline-flex;width:calc(65% - 4px);min-height:48px;margin:8px 4px 0 0;padding:8px;font-size:13px;vertical-align:middle;align-items:center;justify-content:center}
.practising #warmup-exit{position:static;transform:none;display:inline-flex;width:calc(35% - 4px);min-height:48px;margin:8px 0 0;padding:6px;font-size:11px;white-space:normal;vertical-align:middle;align-items:center;justify-content:center}
.practising .warmup-ui:has(#warmup-next[hidden]) #warmup-exit{width:auto;min-height:44px}
@media(max-height:500px) and (min-width:600px){.practising #court{width:calc(100% - 260px);height:100%}.practising .warmup-ui,.practising.free-practice .warmup-ui{top:64px;bottom:68px;left:auto;right:12px;width:236px;overflow:auto}.practising #warmup-next{width:100%;margin-right:0}.practising #warmup-exit{width:100%}}

/* v0.20.2: make existing-name confirmation a clear touch action. */
.name-confirmation{margin-top:14px;display:grid;gap:10px}.name-confirmation[hidden]{display:none}.name-confirmation button{margin:0;min-height:50px;width:100%;text-align:center;justify-content:center}