@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');

:root { color-scheme: light; --paper: #f6f5ef; --ink: #20372e; --muted: #68736c; --green: #164c3f; --line: #dedfd5; --soft: #eaf0e7; }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 15px/1.6 'DM Sans', sans-serif; }
button, input, select { font: inherit; }
button, select { cursor: pointer; }
button { border: 1px solid var(--line); border-radius: 9px; background: white; color: var(--ink); padding: 10px 17px; font-weight: 600; transition: background .15s, transform .15s; }
button:hover:not(:disabled) { background: var(--soft); transform: translateY(-1px); }
button:disabled { cursor: wait; opacity: .55; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid #c78829; outline-offset: 3px; }
a { color: inherit; text-underline-offset: 4px; }
.site-header { max-width: 1240px; margin: auto; padding: 26px 40px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 11px; font: 800 20px 'Manrope', sans-serif; text-decoration: none; letter-spacing: -.7px; }
.brand-icon { display: grid; place-items: center; width: 35px; height: 35px; border-radius: 10px; background: var(--green); color: white; font: 28px Georgia, serif; }
.source-link { font-size: 13px; text-decoration: none; color: var(--muted); }
main { max-width: 1160px; margin: 0 auto; padding: 50px 0 60px; }
.intro { margin-bottom: 38px; }
.eyebrow { font-size: 10px; font-weight: 800; letter-spacing: 2px; color: var(--green); margin: 0 0 10px; }
h1, h2, h3 { font-family: 'Manrope', sans-serif; line-height: 1.2; }
h1 { font-size: clamp(30px, 4vw, 45px); letter-spacing: -1.9px; font-weight: 600; margin: 0 0 12px; }
.intro > p:last-child { margin: 0; color: var(--muted); }
.game-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.mode-picker { display: flex; gap: 4px; padding: 5px; border: 1px solid var(--line); border-radius: 12px; }
.mode { border: 0; background: transparent; min-width: 136px; padding: 9px 16px; color: var(--muted); }
.mode span { margin-right: 9px; font-size: 13px; }
.mode.active { color: white; background: var(--green); }
.mode.active:hover:not(:disabled) { background: #22614f; }
.round-tag { font-size: 12px; color: var(--muted); }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 24px; align-items: start; }
.board { background: #fffefa; border: 1px solid var(--line); border-radius: 18px; padding: 32px; min-height: 470px; box-shadow: 0 4px 18px #20372e03; }
.board-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
h2 { font-size: 23px; letter-spacing: -.8px; font-weight: 600; margin: 0; }
.clock { border: 1px solid var(--line); border-radius: 50%; flex: 0 0 76px; height: 76px; display: flex; flex-direction: column; align-items: center; justify-content: center; background: var(--paper); }
.clock span { font: 600 27px/1.1 'Manrope', sans-serif; font-variant-numeric: tabular-nums; }
.clock small { font-size: 7px; letter-spacing: 1.5px; margin-top: 4px; }
.clock.expired { color: #975019; background: #fff2dc; border-color: #d9b889; }
.muted { color: var(--muted); font-size: 13px; margin: 20px 0; }
.tiles { display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)); gap: 7px; margin: 28px 0 22px; }
.tile { display: grid; place-items: center; aspect-ratio: .85; max-height: 85px; min-width: 0; border-radius: 7px; background: #e7eddf; border: 1px solid #d2dcc8; border-bottom: 4px solid #cad5be; font: 700 clamp(20px, 3vw, 31px) 'Manrope', sans-serif; text-transform: uppercase; }
.tile.blank { color: #c9cec1; background: #f5f5ef; border: 1px dashed #d5d8cd; font-weight: 400; }
.tiles.numbers { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.tiles.numbers .tile { aspect-ratio: 1.1; background: #e3ece9; border-color: #c7d8d2; }
.draw-controls { display: flex; gap: 8px; flex-wrap: wrap; }
.text-button { border: 0; background: transparent; font-size: 12px; padding: 9px 6px; }
.timer-track { background: #eeeee6; height: 3px; margin: 26px 0; border-radius: 5px; overflow: hidden; }
#timer-progress { height: 100%; width: 100%; background: #9eaf89; transition: width .2s linear; }
label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 8px; }
input, select { border: 1px solid #d8ddcf; border-radius: 8px; background: #fffefa; color: var(--ink); padding: 12px; width: 100%; min-width: 0; }
input { font-size: 16px; }
.answer-row { display: flex; gap: 9px; }
.primary { background: var(--green); border-color: var(--green); color: white; white-space: nowrap; font-size: 13px; }
.primary:hover:not(:disabled) { background: #256652; }
.primary span { margin-left: 10px; }
.answer-help { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 8px; color: var(--muted); }
.answer-help small { font-size: 11px; }
.answer-help .text-button { white-space: nowrap; }
.empty-state { text-align: center; color: var(--muted); margin: 28px 0 10px; }
.empty-state > span { font-size: 32px; color: #8a9c74; }
.empty-state p { margin: 6px 0 0; font-size: 13px; }
.empty-state small { font-size: 11px; }
.settings { background: #eceee5; border: 1px solid #dde1d2; border-radius: 16px; padding: 25px; }
.settings h2 { font-size: 19px; margin-bottom: 25px; }
.settings label { margin-top: 17px; }
.settings select { font-size: 12px; padding: 12px 8px; }
.start { width: 100%; margin-top: 24px; display: flex; justify-content: space-between; }
.settings-note { text-align: center; font-size: 11px; color: var(--muted); margin: 12px 0 0; }
.rules { padding: 26px 16px 0; font-size: 12px; color: var(--muted); }
.rules h3 { color: var(--ink); font-size: 16px; margin: 0 0 14px; }
.rules p { margin-top: 0; }
.timer-note { border-top: 1px solid var(--line); padding-top: 12px; }
.target-panel { display: flex; align-items: center; justify-content: center; gap: 24px; background: var(--soft); padding: 12px; border-radius: 10px; }
.target-panel span { font-size: 10px; letter-spacing: 2px; }
.target-panel strong { font: 600 40px 'Manrope', sans-serif; letter-spacing: 3px; }
.notice { border: 1px solid var(--line); padding: 20px; border-radius: 12px; }
.error, .feedback { color: #8c382a; }
.error button { margin-left: 15px; }
.feedback { font-size: 13px; }
.results { border-top: 1px solid var(--line); padding-top: 22px; }
.result-heading { display: flex; justify-content: space-between; align-items: center; }
.result-heading h3 { margin: 0; font-size: 20px; }
#score { background: var(--soft); padding: 5px 12px; border-radius: 30px; font-size: 14px; }
#result-detail { font-size: 13px; padding-top: 10px; }
.answer-chip { display: inline-block; border-radius: 7px; padding: 5px 10px; margin: 6px 6px 0 0; background: var(--soft); }
.answer-chip.invalid { background: #fae9e3; color: #8c382a; }
.solution { margin-top: 22px; padding: 20px; border-radius: 10px; background: var(--paper); }
#solution-status { font-size: 13px; margin: 0; }
#solutions { overflow-wrap: anywhere; }
#solutions code { display: block; font-size: 15px; margin-top: 10px; }
footer { max-width: 1160px; margin: 0 auto; padding: 22px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; }
@media (max-width: 1240px) { main, footer { margin-left: 32px; margin-right: 32px; } }
@media (max-width: 900px) { .layout { grid-template-columns: minmax(0, 1fr) 250px; gap: 16px; } .board { padding: 22px; } .settings { padding: 20px; } .answer-row { flex-direction: column; } .tiles { gap: 4px; } }
@media (max-width: 700px) { .site-header { padding: 20px; } main { margin: 0 16px; padding-top: 32px; } .intro { margin-bottom: 28px; } .intro > p:last-child { font-size: 13px; } .layout { grid-template-columns: 1fr; } aside { display: contents; } .settings { grid-row: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 18px; } .settings > .eyebrow, .settings h2, .settings-note { display: none; } .settings > label { grid-column: 1; margin: 0; } .settings > select { grid-column: 1; grid-row: 2; } .settings > div { grid-column: 2; grid-row: 1 / 3; } .settings label { margin-top: 0; } .start { grid-column: 1 / -1; margin: 0; } .round-tag { display: none; } .board { padding: 22px 18px; min-height: 380px; } h2 { font-size: 21px; } .clock { flex-basis: 64px; height: 64px; } .tile { font-size: 23px; } .rules { padding: 15px; } footer { margin: 0 20px; gap: 20px; } .answer-row { flex-direction: row; } .answer-row .primary { font-size: 11px; padding: 10px; } .mode-picker { width: 100%; } .mode { flex: 1; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }