:root{color-scheme:dark;--bg:#101722;--panel:#1b2635;--panel2:#243245;--text:#f3f6fb;--muted:#96a6bb;--border:#35445a;--accent:#8ce2c0;--green:#2d9d77}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 50% -15%,#21354b 0%,var(--bg) 55%);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--text);min-height:100vh}.app{max-width:560px;margin:auto;padding:18px 20px 30px}header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding-bottom:16px}.brand{font-size:24px;letter-spacing:2px;font-weight:900;display:flex;align-items:center;gap:10px}.mark{display:grid;place-items:center;background:var(--accent);color:#0e2230;border-radius:10px;width:35px;height:35px;font-size:26px}.actions{display:flex;gap:8px}button{font:inherit;cursor:pointer}.icon,.close{background:var(--panel);border:1px solid var(--border);color:var(--text);border-radius:10px;width:37px;height:37px;font-size:19px}.intro{text-align:center;padding:26px 0 17px}.eyebrow{font-size:11px;letter-spacing:3px;color:var(--accent);font-weight:800}h1{font-size:clamp(26px,6vw,38px);line-height:1.14;letter-spacing:-1px;margin:12px 0 9px}h1 em{font-style:normal;color:var(--accent)}.intro p{font-size:14px;color:var(--muted);margin:0}.meta{display:flex;justify-content:center;gap:20px;margin-top:18px;font-size:11px;letter-spacing:1px;color:var(--muted)}.board{display:grid;gap:7px;max-width:390px;margin:5px auto 10px}.guess-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.tile{height:clamp(47px,12vw,61px);border:2px solid var(--border);border-radius:9px;background:var(--panel);display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:850;font-size:23px;line-height:1.08;transition:background .2s,border-color .2s}.tile.filled{border-color:#6c7e95}.tile.correct{background:var(--green);border-color:var(--green)}.hint{font-size:17px;color:var(--accent);font-weight:900}.tile.correct .hint{color:white}.toast{height:27px;text-align:center;color:var(--accent);font-size:13px;font-weight:650;margin:4px 0}.keyboard{display:grid;gap:7px;margin:0 auto;max-width:510px}.keyrow{display:flex;justify-content:center;gap:5px}.key{flex:1;min-width:0;max-width:49px;height:49px;background:#344459;color:#fff;border:0;border-radius:6px;font-weight:750;font-size:14px}.key.wide{flex:1.45;max-width:78px;font-size:11px;background:#52677e}.key:active{transform:scale(.95)}.under{display:flex;gap:10px;justify-content:center;margin-top:19px}.secondary,.primary{padding:12px 17px;border-radius:10px;border:1px solid var(--border);color:var(--text);background:var(--panel);font-weight:700}.primary{background:var(--accent);color:#12232b;border:0}.secondary:hover,.icon:hover{background:var(--panel2)}footer{color:var(--muted);font-size:11px;text-align:center;margin-top:24px}.overlay{position:fixed;inset:0;background:#030810bb;display:grid;place-items:center;padding:20px;z-index:20}.overlay[hidden],button[hidden]{display:none}.dialog{background:#1c2a3b;border:1px solid var(--border);border-radius:18px;padding:28px;max-width:430px;width:100%;position:relative;box-shadow:0 20px 80px #0008;max-height:85vh;overflow:auto}.dialog h2{margin:0 0 18px}.dialog p{line-height:1.6;color:#c7d3e0}.dialog .sample{display:flex;gap:8px;align-items:center;margin:15px 0}.sample .tile{width:52px;height:57px}.close{position:absolute;right:15px;top:15px}.statgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:20px 0}.stat{text-align:center;background:var(--panel2);border-radius:10px;padding:12px 5px}.stat strong{font-size:23px;display:block}.stat span{font-size:10px;color:var(--muted)}.bar{height:24px;background:#33485c;margin:6px 0;border-radius:5px;overflow:hidden;font-size:12px;padding:4px 8px}.muted{color:var(--muted)}@media(max-width:380px){.app{padding:14px 10px}.key{height:44px}.keyrow{gap:3px}.board{gap:5px}.guess-row{gap:5px}}

.arrow-guide{max-width:460px;margin:0 auto 15px;padding:13px 14px;background:#172638;border:1px solid var(--border);border-radius:12px}.guide-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:10px;letter-spacing:1.3px;color:var(--muted)}.guide-link{border:0;background:transparent;color:var(--accent);font-size:10px;font-weight:800;letter-spacing:.5px;padding:4px}.guide-items{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:12px}.guide-item{display:flex;align-items:center;gap:8px;min-width:0}.guide-arrow,.guide-check{font-size:25px;font-weight:900;color:var(--accent);line-height:1}.guide-item b{display:block;font-size:10px;letter-spacing:.8px}.guide-item small{display:block;color:var(--muted);font-size:9px;line-height:1.3;margin-top:3px}.guide-note{font-size:10px!important;color:var(--muted)!important;text-align:center;margin:11px 0 0!important;line-height:1.4!important}@media(max-width:390px){.arrow-guide{padding:10px}.guide-items{gap:5px}.guide-item{gap:5px}.guide-item small{font-size:8px}.guide-heading{font-size:9px}}

/* Compact, dismissible help popover beside Practice mode */
.under{flex-wrap:wrap;align-items:center}.quick-help{max-width:460px;margin:12px auto 0;padding:16px;background:#172638;border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 35px #0005;animation:helpIn .16s ease-out}.quick-help[hidden]{display:none}.quick-help h2{font-size:15px;letter-spacing:.6px;margin:0 0 13px}.quick-help-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.quick-help-grid small{display:block;color:var(--muted);font-size:11px;line-height:1.4;margin-top:5px}.quick-help .guide-arrow,.quick-help .guide-check{font-size:13px;color:var(--accent)}.quick-help p{font-size:11px;color:var(--muted);text-align:center;line-height:1.45;margin:12px 0 0}@keyframes helpIn{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}@media(max-width:390px){.under{gap:7px}.under .secondary{padding:10px 11px;font-size:12px}.quick-help{padding:12px}.quick-help-grid{gap:7px}.quick-help-grid small{font-size:10px}}

/* v0.7: quiet daily countdown and completed-board keyboard state */
.countdown{margin:-.35rem 0 1rem;text-align:center;color:#8fa8c2;font-size:.68rem;font-weight:800;letter-spacing:.12em;font-variant-numeric:tabular-nums}
.keyboard .key:disabled{opacity:.38;cursor:default;filter:saturate(.45)}
button:focus-visible{outline:3px solid #70dfb5;outline-offset:3px}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* v0.8: countdown hierarchy and full-screen soft How to Play overlay */
.countdown{margin:15px 0 4px;text-align:center;color:var(--accent);font-size:.68rem;font-weight:850;letter-spacing:.14em;font-variant-numeric:tabular-nums}
.meta{margin-top:0}
#modal.overlay{background:rgba(3,8,16,.76);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);padding:18px;animation:overlayFade .18s ease-out}
#modal .dialog{max-width:440px;border-radius:20px;padding:30px 26px;background:linear-gradient(155deg,#203247,#172536);border-color:#40536b;box-shadow:0 24px 90px rgba(0,0,0,.48);animation:dialogPop .2s cubic-bezier(.2,.8,.2,1);max-height:min(82vh,650px)}
#modal .close{width:36px;height:36px;border-radius:50%;background:#2a3b50;color:#dce8f3;font-size:23px}
@keyframes overlayFade{from{opacity:0}to{opacity:1}}
@keyframes dialogPop{from{opacity:0;transform:translateY(9px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
@media(prefers-reduced-motion:reduce){#modal.overlay,#modal .dialog{animation:none}}