:root { color-scheme: dark; font-family: "Segoe UI", "Noto Sans TC", sans-serif; background: #01030b; color: #eef7ff; }
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: radial-gradient(circle at 50% 0%, #17295c 0, #050816 42%, #01030b 100%); }
body { min-height: 100svh; overflow: hidden; }
button { font: inherit; }
#app { min-height: 100svh; display: grid; place-items: center; padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }
.game-shell { position: relative; width: min(100vw, 420px); height: min(100svh, 746px); display: grid; place-items: center; overflow: hidden; background: #050816; box-shadow: 0 0 80px rgba(35, 113, 255, .18); }
#game-canvas { display: block; touch-action: none; image-rendering: auto; }
.overlay { background: rgba(3, 8, 24, .82); }
.panel-screen { background: linear-gradient(180deg, rgba(2, 8, 22, .72), rgba(2, 8, 22, .92)); }
.eyebrow { margin: 0 0 14px; color: #52e7ff; font-size: 10px; letter-spacing: .28em; font-weight: 700; }
h1 { margin: 0; font-size: clamp(42px, 14vw, 68px); line-height: .86; letter-spacing: -.08em; font-weight: 900; text-shadow: 0 0 30px rgba(82, 231, 255, .42); }
h1 span { color: #ff4f9a; }
h2 { margin: 0 0 10px; font-size: 28px; letter-spacing: .08em; }
.scores { min-height: 16px; margin: 18px 0 0; color: #ffcf80; font: 11px ui-monospace, monospace; }
.hud { position: absolute; inset: 0; pointer-events: none; padding: 20px 16px; display: flex; align-items: flex-start; gap: 12px; }
.hud-stat { display: grid; gap: 3px; color: #8ca7c8; font-size: 9px; letter-spacing: .15em; }
.hud-stat strong { color: #eef7ff; font-size: 13px; letter-spacing: .08em; }
.hud-stat.hp { margin-left: auto; }
.hud-stat.hp strong { color: #ff6cae; letter-spacing: 1px; }
.pause-button { pointer-events: auto; width: 38px; height: 38px; margin: -5px 0 0 5px; border: 1px solid rgba(82, 231, 255, .5); border-radius: 12px; color: #eef7ff; background: rgba(5, 8, 22, .7); cursor: pointer; }

.screen { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: safe center; overflow-y: auto; text-align: center; background: radial-gradient(ellipse at 50% 30%, rgba(24, 52, 120, .22), rgba(3, 8, 24, .82) 70%); padding: 32px; backdrop-filter: blur(2px); animation: screen-in .35s ease both; }
.screen::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: repeating-linear-gradient(0deg, rgba(82, 231, 255, .035) 0 1px, transparent 1px 4px); }
@keyframes screen-in { from { opacity: 0; transform: scale(1.03); } to { opacity: 1; transform: none; } }
.title-glow { position: absolute; top: 12%; width: 280px; height: 280px; border-radius: 50%; background: radial-gradient(circle, rgba(82, 231, 255, .22), rgba(255, 79, 154, .1) 45%, transparent 70%); filter: blur(10px); animation: glow-pulse 4s ease-in-out infinite; pointer-events: none; }
@keyframes glow-pulse { 50% { transform: scale(1.12); opacity: .75; } }
h1, h2, .eyebrow, .subtitle, .menu-list, .settings-list, .hint, .scores, .exit-copy, .back-button { position: relative; }
h1 span { background: linear-gradient(90deg, #ff4f9a, #ffb45e); -webkit-background-clip: text; background-clip: text; color: transparent; text-shadow: none; filter: drop-shadow(0 0 14px rgba(255, 79, 154, .55)); }
.subtitle { margin: 18px 0 30px; color: #a9c2e5; letter-spacing: .45em; font-size: 13px; }
.hint { margin-top: 18px; color: #8ca7c8; font-size: 12px; letter-spacing: .06em; }
.menu-list { width: min(100%, 290px); display: grid; gap: 10px; }
.primary-button, .menu-button { position: relative; min-width: 190px; display: flex; flex-direction: column; align-items: center; gap: 2px; border: 1px solid #52e7ff; border-radius: 4px; padding: 11px 18px; cursor: pointer; clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px); transition: transform .12s, box-shadow .2s, background .2s, filter .2s; }
.primary-button { color: #04101f; background: linear-gradient(135deg, #7df0ff, #3fb6ff); box-shadow: 0 0 26px rgba(82, 231, 255, .35); }
.menu-button { color: #d9edff; background: linear-gradient(135deg, rgba(10, 28, 60, .85), rgba(6, 16, 38, .85)); border-color: rgba(82, 231, 255, .4); }
.primary-button b, .menu-button b { font-size: 14px; letter-spacing: .22em; font-weight: 800; }
.primary-button small, .menu-button small { font-size: 11px; letter-spacing: .12em; opacity: .75; font-weight: 500; }
.menu-button:hover, .menu-button:focus-visible { background: linear-gradient(135deg, rgba(37, 96, 137, .9), rgba(20, 52, 100, .9)); border-color: #52e7ff; filter: drop-shadow(0 0 8px rgba(82, 231, 255, .55)); outline: none; }
.primary-button:hover { filter: brightness(1.08) drop-shadow(0 0 10px rgba(82, 231, 255, .7)); }
.primary-button:active, .menu-button:active { transform: translateY(1px) scale(.98); }
.menu-button.quiet { border-color: rgba(255, 79, 154, .35); color: #f2c7da; }
.menu-button.quiet:hover { border-color: #ff4f9a; filter: drop-shadow(0 0 8px rgba(255, 79, 154, .5)); }
.menu-button:disabled { opacity: .4; cursor: not-allowed; filter: none; }
.menu-button:disabled:hover { background: linear-gradient(135deg, rgba(10, 28, 60, .85), rgba(6, 16, 38, .85)); border-color: rgba(82, 231, 255, .4); filter: none; }
.settings-list { width: min(100%, 300px); display: grid; gap: 8px; margin: 4px 0 16px; }
.setting-control { display: grid; gap: 7px; padding: 10px 14px; text-align: left; color: #a9c2e5; font-size: 12px; letter-spacing: .12em; border: 1px solid rgba(82, 231, 255, .2); border-radius: 6px; background: rgba(6, 18, 42, .62); transition: opacity .2s; }
.setting-control.disabled { opacity: .38; pointer-events: none; }
.setting-control select { border: 1px solid rgba(82, 231, 255, .45); border-radius: 6px; padding: 8px 10px; color: #eef7ff; background: #0b1533; font-size: 14px; }
.segmented { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; border: 1px solid rgba(82, 231, 255, .4); border-radius: 6px; overflow: hidden; }
.segmented button { border: 0; padding: 9px 6px; color: #8ca7c8; background: rgba(5, 12, 30, .9); font-size: 13px; letter-spacing: .08em; cursor: pointer; transition: background .2s, color .2s; }
.segmented button + button { border-left: 1px solid rgba(82, 231, 255, .3); }
.segmented button.selected { color: #04101f; font-weight: 800; background: linear-gradient(135deg, #7df0ff, #3fb6ff); box-shadow: inset 0 0 12px rgba(255, 255, 255, .3); }
.scores-large { width: min(100%, 290px); min-height: 90px; margin-bottom: 22px; padding: 22px 14px; border: 1px solid rgba(82, 231, 255, .3); border-radius: 6px; background: rgba(4, 15, 33, .72); line-height: 2.1; white-space: pre-line; font-size: 14px; box-shadow: inset 0 0 24px rgba(82, 231, 255, .08); }
.exit-copy { margin: 4px 0 24px; color: #a9c2e5; font-size: 14px; }
.back-button { min-width: 190px; }
[data-save-info].flash { color: #6cff98; opacity: 1; }
.screen p[data-result-copy] { margin: 0 0 24px; color: #a9c2e5; }
[data-screen="result"] h2 { font-size: 30px; text-shadow: 0 0 22px rgba(255, 79, 154, .6); }
.overlay { background: rgba(3, 8, 24, .84); }
.panel-screen { background: radial-gradient(ellipse at 50% 20%, rgba(24, 52, 120, .25), rgba(2, 8, 22, .94) 75%); }
[hidden] { display: none !important; }
@media (min-width: 700px) { .game-shell { border: 1px solid rgba(82, 231, 255, .16); border-radius: 28px; height: min(92svh, 746px); } }