:root {
    color-scheme: dark;
    --bg: #0b1510;
    --panel: #14251b;
    --panel-2: #1b3023;
    --border: #365541;
    --text: #f1f5f2;
    --muted: #b6c5ba;
    --gold: #f7c85a;
    --green: #62b66f;
    --green-dark: #357542;
    --danger: #ef6b64;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    background: radial-gradient(circle at 50% -10%, #1c3525 0, var(--bg) 46%);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main { width: min(980px, calc(100% - 24px)); margin: 0 auto; padding: 20px 0 48px; }
a { color: #9bd9a7; }
.breadcrumb { margin-bottom: 18px; color: var(--muted); font-size: .94rem; }
.game-header { display: flex; justify-content: space-between; align-items: end; margin-bottom: 12px; }
.game-header h1 { margin: 0; font-size: clamp(2rem, 6vw, 3.15rem); letter-spacing: -.04em; }
.tagline { margin: 5px 0 0; color: var(--muted); font-size: 1.05rem; }
.game-tip { margin: 0 0 14px; border-color: var(--border); background: rgba(20,37,27,.8); }

.td-shell {
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    background: rgba(13, 27, 18, .94);
    box-shadow: 0 22px 60px rgba(0,0,0,.38);
}

.status-bar {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1px;
    background: var(--border);
    border-bottom: 1px solid var(--border);
}

.status-bar span { display: grid; place-items: center; padding: 9px 4px 8px; background: #122219; }
.status-bar small { color: var(--muted); font-size: .69rem; text-transform: uppercase; letter-spacing: .08em; }
.status-bar strong { margin-top: 1px; font-variant-numeric: tabular-nums; font-size: 1.05rem; }
#coins-display { color: var(--gold); }
#lives-display { color: #ff8d88; }

.game-container { position: relative; width: 100%; background: #294d32; line-height: 0; touch-action: manipulation; }
#td-canvas { display: block; width: 100%; height: auto; max-height: 70vh; outline: none; cursor: crosshair; }
#td-canvas:focus-visible { box-shadow: inset 0 0 0 4px #fff, inset 0 0 0 7px #216bad; }

.game-status { min-height: 1.35em; margin: 0; padding: 10px 14px; color: #d9e6dc; background: #102017; text-align: center; line-height: 1.35; }

.tower-shop { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 10px; }
button { min-height: 44px; border: 1px solid var(--border); border-radius: 10px; background: var(--panel-2); color: var(--text); font: inherit; font-weight: 700; cursor: pointer; }
button:hover:not(:disabled) { border-color: #78a783; background: #264531; }
button:focus-visible { outline: 3px solid #f5d478; outline-offset: 2px; }
button:disabled { cursor: not-allowed; opacity: .5; }

.tower-button { display: flex; align-items: center; justify-content: center; gap: 9px; padding: 8px; text-align: left; }
.tower-button.selected { border-color: var(--gold); background: #314426; box-shadow: inset 0 0 0 1px var(--gold); }
.tower-button span:last-child { display: grid; line-height: 1.15; }
.tower-button small { margin-top: 3px; color: var(--muted); font-size: .75rem; font-weight: 600; }
.tower-symbol { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; font-size: 1.25rem; }
.tower-symbol.arrow { background: #a86939; color: #fff2cf; }
.tower-symbol.frost { background: #3188ad; color: white; }
.tower-symbol.cannon { background: #5d6570; color: #171b20; }

.tower-panel { display: flex; align-items: center; gap: 8px; margin: 0 10px 10px; padding: 9px; border: 1px solid #607563; border-radius: 11px; background: #1d3023; }
.tower-panel[hidden] { display: none; }
.tower-panel > div { display: grid; min-width: 120px; margin-right: auto; }
.tower-panel small { color: var(--muted); }
.tower-panel button { padding: 7px 12px; }

.game-actions { display: grid; grid-template-columns: minmax(150px, 2fr) 1fr .7fr 1fr; gap: 8px; padding: 0 10px 12px; }
button.primary { border-color: #7bc488; background: var(--green-dark); }
button.quiet { background: #202c24; color: #d4ddd6; }

.result-overlay { position: absolute; inset: 0; display: grid; place-items: center; padding: 18px; background: rgba(5,12,8,.76); line-height: 1.4; z-index: 3; }
.result-overlay.hidden { display: none; }
.result-card { width: min(420px, 100%); padding: 24px; border: 1px solid #73927a; border-radius: 16px; background: #12251a; box-shadow: 0 18px 50px rgba(0,0,0,.5); text-align: center; }
.result-icon { font-size: 3rem; }
.result-card h2 { margin: 6px 0; }
.result-card p { margin: 4px 0 18px; color: var(--muted); }
.overlay-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }

.content { margin-top: 30px; color: #d7e1d9; line-height: 1.72; }
.content h2 { margin: 30px 0 8px; color: var(--text); line-height: 1.2; }
.content li + li { margin-top: 7px; }
.last-updated { color: var(--muted); font-size: .9rem; }
.faq dt { margin-top: 14px; color: var(--text); font-weight: 800; }
.faq dd { margin: 4px 0 0; }
.related-games { margin-top: 32px; padding: 18px; border: 1px solid var(--border); border-radius: 14px; background: var(--panel); }
.related-games h3 { margin: 0 0 10px; }
.game-links { display: flex; flex-wrap: wrap; gap: 8px 14px; }
.noscript { margin: 0; padding: 10px; background: #7f1d1d; color: white; text-align: center; }

@media (max-width: 640px) {
    main { width: min(100%, 560px); padding-top: 10px; }
    .breadcrumb, .game-header, .game-tip, .content { margin-left: 12px; margin-right: 12px; }
    .td-shell { border-left: 0; border-right: 0; border-radius: 0; }
    .status-bar small { font-size: .58rem; }
    .status-bar strong { font-size: .92rem; }
    .tower-shop { gap: 5px; padding: 8px 6px; }
    .tower-button { flex-direction: column; gap: 3px; min-width: 0; padding: 6px 2px; text-align: center; }
    .tower-button strong { font-size: .78rem; }
    .tower-button small { font-size: .65rem; }
    .tower-symbol { width: 29px; height: 29px; font-size: 1rem; }
    .tower-panel { flex-wrap: wrap; margin-inline: 6px; }
    .tower-panel > div { width: 100%; }
    .tower-panel button { flex: 1; }
    .game-actions { grid-template-columns: 1.5fr 1fr .7fr; padding-inline: 6px; }
    #restart-btn { grid-column: 1 / -1; }
    .game-status { font-size: .82rem; padding: 8px; }
    .result-card { padding: 18px 14px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; }
}