/* 파닥 비행 (/grammar/infinitive/flap.jsp, 2026-10-18). js/ps2-infinitive-flap.js 가 만드는 화면. 로비 · 한 판(하늘 캔버스 + 안내) · 결과 */
#main .gi .fb { min-width: 0; --fb-ink: #0f172a; --fb-mute: #64748b; --fb-line: #e2e8f0; --fb-accent: #2563eb; margin: 0 0 28px; }
#main .gi .fb .fb-view[hidden] { display: none; }

/* 로비 */
#main .gi .fb .fb-hero { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; align-items: center; padding: 22px; border-radius: 22px; color: #fff;
    background: radial-gradient(120% 90% at 50% 100%, #0e7490 0%, #0b1120 62%, #07101f 100%); box-shadow: 0 30px 60px -36px rgba(2, 6, 23, .9); overflow: hidden; }
#main .gi .fb .fb-hero__art { position: relative; height: 240px; border-radius: 16px; overflow: hidden; background: linear-gradient(#6eb4ff, #d6ecff 70%); }
#main .gi .fb .fb-hero__cloud { position: absolute; width: 70px; height: 24px; border-radius: 999px; background: rgba(255,255,255,.9); box-shadow: 22px -10px 0 4px rgba(255,255,255,.9), -18px -4px 0 0 rgba(255,255,255,.9); animation: fb-cloud 14s linear infinite; }
#main .gi .fb .fb-hero__cloud.c1 { top: 28px; left: 70%; }
#main .gi .fb .fb-hero__cloud.c2 { top: 70px; left: 20%; transform: scale(.8); animation-duration: 20s; animation-delay: -7s; }
@keyframes fb-cloud { from { margin-left: 160px; } to { margin-left: -420px; } }
#main .gi .fb .fb-hero__col { position: absolute; top: 0; bottom: 30px; right: 22%; width: 54px;
    background: linear-gradient(90deg, rgba(15,118,110,.55), rgba(255,255,255,.25) 45%, rgba(17,94,89,.55)), linear-gradient(#14b8a6 0 8%, transparent 8% 42%, #14b8a6 42% 58%, transparent 58% 92%, #14b8a6 92%);
    -webkit-mask-image: linear-gradient(#000 0 8%, transparent 8% 42%, #000 42% 58%, transparent 58% 92%, #000 92%); mask-image: linear-gradient(#000 0 8%, transparent 8% 42%, #000 42% 58%, transparent 58% 92%, #000 92%); }
#main .gi .fb .fb-hero__labels { position: absolute; top: 0; bottom: 30px; right: 22%; width: 54px; }
#main .gi .fb .fb-hero__labels i { position: absolute; left: 50%; transform: translateX(-50%); padding: 5px 12px; border-radius: 999px; background: rgba(255,255,255,.94); border: 2px solid #3b82f6; font-weight: 800; font-size: 13px; line-height: 1; font-family: inherit; font-style: normal; color: var(--fb-ink); white-space: nowrap; }
#main .gi .fb .fb-hero__labels i.t { top: 20%; }
#main .gi .fb .fb-hero__labels i.b { top: 70%; border-color: #f59e0b; }
#main .gi .fb .fb-hero__labels i.is-ok { animation: fb-ok 3s ease-in-out infinite; }
@keyframes fb-ok { 0%, 55% { background: rgba(255,255,255,.94); } 65%, 90% { background: #dcfce7; border-color: #16a34a; box-shadow: 0 0 16px rgba(22, 163, 74, .6); } }
#main .gi .fb .fb-hero__bird { position: absolute; left: 20%; top: 60%; width: 34px; height: 30px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #fdba74, #ea580c 70%);
    box-shadow: inset -6px -4px 0 rgba(194, 65, 12, .35); animation: fb-fly 3s ease-in-out infinite; }
#main .gi .fb .fb-hero__bird::before { content: ""; position: absolute; right: -9px; top: 12px; border: 6px solid transparent; border-left: 10px solid #facc15; }
#main .gi .fb .fb-hero__bird::after { content: ""; position: absolute; right: 5px; top: 6px; width: 8px; height: 8px; border-radius: 50%; background: #fff; box-shadow: inset 2px 0 0 2px #0f172a; }
@keyframes fb-fly { 0% { transform: translate(0, -60px); } 25% { transform: translate(40px, -10px); } 50% { transform: translate(80px, 20px); } 60% { transform: translate(140px, 30px) rotate(10deg); opacity: 1; } 75% { transform: translate(200px, 24px); opacity: 0; } 100% { transform: translate(0, -60px); opacity: 0; } }
#main .gi .fb .fb-hero__ground { position: absolute; left: 0; right: 0; bottom: 0; height: 30px; background: repeating-linear-gradient(120deg, rgba(255,255,255,.18) 0 10px, transparent 10px 24px), linear-gradient(#65a30d 0 22%, #d6b77a 22%); animation: fb-ground .8s linear infinite; }
@keyframes fb-ground { to { background-position: -28px 0, 0 0; } }
#main .gi .fb .fb-hero__txt h2 { margin: 0 0 8px; font-size: clamp(20px, 2.6vw, 26px); line-height: 1.35; letter-spacing: -0.02em; color: #fff; }
#main .gi .fb .fb-hero__txt p { margin: 0 0 12px; font-size: 15px; line-height: 1.7; color: rgba(255, 255, 255, .82); }
#main .gi .fb .fb-how { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; font-size: 13.5px; color: rgba(255, 255, 255, .85); }
#main .gi .fb .fb-how kbd, #main .gi .fb .fb-tip kbd { display: inline-block; min-width: 22px; padding: 1px 7px; border-radius: 6px; border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.12); font-weight: 700; font-size: 12px; line-height: 1.6; font-family: inherit; color: #fff; text-align: center; }
#main .gi .fb .fb-levels { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin: 16px 0 10px; }
#main .gi .fb .fb-level { display: grid; align-content: start; gap: 8px; padding: 16px; border: 1px solid var(--fb-line); border-radius: 16px; background: #fff; box-shadow: 0 10px 24px rgba(15, 23, 42, .06); }
#main .gi .fb .fb-level.is-locked { opacity: .62; }
#main .gi .fb .fb-level h3 { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 0; font-size: 16px; }
#main .gi .fb .fb-level h3 i { font-style: normal; color: #f59e0b; letter-spacing: 1px; font-size: 14px; }
#main .gi .fb .fb-level p { margin: 0; font-size: 13.5px; line-height: 1.6; color: var(--fb-mute); }
#main .gi .fb .fb-level__meta { display: flex; gap: 8px; flex-wrap: wrap; font-size: 12.5px; color: var(--fb-mute); }
#main .gi .fb .fb-level__box { padding: 0 8px; border-radius: 999px; background: #fef3c7; color: #92400e; font-weight: 700; }
#main .gi .fb .fb-level .gi-btn { justify-self: start; }
#main .gi .fb .fb-foot { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; font-size: 13px; color: var(--fb-mute); }
#main .gi .fb .fb-tool { padding: 6px 12px; border: 1px solid var(--fb-line); border-radius: 999px; background: #fff; font-weight: 700; font-size: 13px; line-height: 1.4; font-family: inherit; color: var(--fb-ink); cursor: pointer; }

/* 한 판 */
#main .gi .fb .fb-stage { display: grid; gap: 10px; }
#main .gi .fb .fb-top { display: flex; flex-wrap: wrap; gap: 6px 16px; align-items: center; font-size: 14px; color: var(--fb-mute); }
#main .gi .fb .fb-top b { font-size: 18px; color: var(--fb-ink); font-variant-numeric: tabular-nums; display: inline-block; }
#main .gi .fb .fb-top b.is-pop { animation: fb-pop .45s ease; }
@keyframes fb-pop { 30% { transform: scale(1.35); color: #16a34a; } }
#main .gi .fb .fb-combo.is-hot b { color: #ea580c; }
#main .gi .fb .fb-combo.is-hot::after { content: " 🔥"; }
#main .gi .fb .fb-hearts i { font-style: normal; color: #ef4444; font-size: 18px; margin-right: 2px; }
#main .gi .fb .fb-hearts i.is-off { color: #cbd5e1; }
#main .gi .fb .fb-dist { padding: 1px 9px; border-radius: 999px; background: #ecfeff; color: #0e7490; font-weight: 800; font-variant-numeric: tabular-nums; }
#main .gi .fb .fb-wave { margin-left: auto; font-weight: 700; }
#main .gi .fb .fb-q { min-height: 74px; padding: 12px 16px; border-radius: 16px; background: #0f172a; color: #fff; text-align: center; }
#main .gi .fb .fb-sent { margin: 0; font-weight: 800; font-size: clamp(17px, 2.4vw, 23px); line-height: 1.45; font-family: inherit; letter-spacing: -0.01em; }
#main .gi .fb .fb-sent mark { display: inline-block; min-width: 86px; padding: 0 10px; border-radius: 8px; background: rgba(255,255,255,.14); color: #fde68a; border: 1px dashed rgba(253, 230, 138, .6); }
#main .gi .fb .fb-sent mark.is-ok { background: #16a34a; color: #fff; border-style: solid; border-color: #16a34a; }
#main .gi .fb .fb-ko { display: block; margin-top: 4px; font-size: 14px; color: rgba(255,255,255,.78); }
#main .gi .fb .fb-ko--hint { color: rgba(255,255,255,.5); }
#main .gi .fb .fb-ko--why { color: #86efac; font-weight: 700; }
#main .gi .fb .fb-sky-wrap { position: relative; display: grid; justify-items: center; }
#main .gi .fb .fb-sky { display: block; width: 100%; border-radius: 18px; touch-action: none; cursor: pointer; box-shadow: 0 30px 60px -30px rgba(2, 6, 23, .6); user-select: none; -webkit-user-select: none; }
#main .gi .fb .fb-overlay { position: absolute; inset: 0; display: grid; place-items: center; padding: 12px; background: rgba(2, 6, 23, .45); border-radius: 18px; backdrop-filter: blur(2px); }
#main .gi .fb .fb-overlay[hidden] { display: none; }
#main .gi .fb .fb-card { width: min(560px, 100%); padding: 16px 18px; border-radius: 16px; background: #fff; color: var(--fb-ink); box-shadow: 0 30px 60px -20px rgba(2, 6, 23, .8); animation: fb-card .25s ease; }
@keyframes fb-card { from { transform: translateY(14px); opacity: 0; } }
#main .gi .fb .fb-card .fb-sent, #main .gi .fb .fb-wrong .fb-sent { color: var(--fb-ink); font-size: 18px; text-align: left; }
#main .gi .fb .fb-card .fb-sent mark { background: #e2e8f0; color: var(--fb-ink); border-color: #cbd5e1; }
#main .gi .fb .fb-card .fb-sent mark.is-ok, #main .gi .fb .fb-wrong .fb-sent mark.is-ok { background: #16a34a; color: #fff; border-color: #16a34a; }
#main .gi .fb .fb-card__tag { display: inline-block; margin-bottom: 6px; padding: 2px 10px; border-radius: 999px; background: #fee2e2; color: #b91c1c; font-size: 12.5px; font-weight: 800; }
#main .gi .fb .fb-card__ko { margin: 4px 0 0; font-size: 14px; color: var(--fb-mute); }
#main .gi .fb .fb-card__why { margin: 8px 0 0; padding: 10px 12px; border-radius: 10px; background: #f0fdf4; color: #14532d; font-size: 15px; line-height: 1.6; font-weight: 600; }
#main .gi .fb .fb-card__mine { margin: 8px 0 0; font-size: 13.5px; color: #b91c1c; }
#main .gi .fb .fb-card__row { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 12px; }
#main .gi .fb .fb-card__link { font-size: 13.5px; font-weight: 700; color: var(--fb-accent); }
#main .gi .fb .fb-ctl { display: grid; grid-template-columns: 1fr 96px; gap: 8px; align-items: stretch; }
#main .gi .fb .fb-ctl__lanes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
#main .gi .fb .fb-ctl__lanes button { display: grid; place-items: center; min-height: 52px; padding: 4px 8px; border: 1px solid var(--fb-line); border-top: 4px solid hsl(var(--hue, 210) 75% 55%); border-radius: 12px; background: #fff; font-weight: 700; font-size: 15px; line-height: 1.3; font-family: inherit; color: var(--fb-mute); text-align: center; cursor: pointer; touch-action: manipulation; transition: background .15s, color .15s, box-shadow .15s; }
#main .gi .fb .fb-ctl__lanes button.is-on { background: #0f172a; color: #fff; border-color: #0f172a; border-top-color: hsl(var(--hue, 210) 85% 60%); }
#main .gi .fb .fb-ctl__lanes button.is-auto { box-shadow: 0 0 0 3px rgba(250, 204, 21, .5); }
#main .gi .fb .fb-ctl__lanes button.is-auto::after { content: "저절로 날기"; display: block; font-size: 10.5px; font-weight: 800; color: #ca8a04; }
#main .gi .fb .fb-ctl__lanes button.is-on.is-auto::after { color: #fde68a; }
#main .gi .fb .fb-ctl__flap { min-height: 52px; border: 0; border-radius: 12px; background: linear-gradient(135deg, #fb923c, #ea580c); color: #fff; font-weight: 800; font-size: 15px; line-height: 1; font-family: inherit; cursor: pointer; touch-action: none; user-select: none; -webkit-user-select: none; box-shadow: 0 8px 18px -8px rgba(234, 88, 12, .8); }
#main .gi .fb .fb-ctl__flap:active { transform: translateY(1px); filter: brightness(.95); }
#main .gi .fb .fb-tip { margin: 0; font-size: 12.5px; color: var(--fb-mute); text-align: center; }
#main .gi .fb .fb-tip kbd { border-color: var(--fb-line); background: #f1f5f9; color: var(--fb-ink); }

/* 결과 */
#main .gi .fb .fb-result__head { padding: 22px; border-radius: 20px; color: #fff; text-align: center; background: linear-gradient(135deg, #0f172a, #1e293b); }
#main .gi .fb .fb-result__head.is-win { background: radial-gradient(120% 100% at 50% 0, #0e7490 0%, #0f172a 70%); }
#main .gi .fb .fb-result__tag { display: inline-block; padding: 3px 12px; border-radius: 999px; background: rgba(255,255,255,.14); font-size: 13px; font-weight: 800; }
#main .gi .fb .fb-result__score { margin: 8px 0 0; }
#main .gi .fb .fb-result__score b { font-size: clamp(44px, 7vw, 64px); font-weight: 900; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
#main .gi .fb .fb-result__score small { margin-left: 4px; font-size: 16px; color: rgba(255,255,255,.7); }
#main .gi .fb .fb-result__stars { font-size: 26px; color: #fbbf24; letter-spacing: 3px; }
#main .gi .fb .fb-result__row { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 8px; margin-top: 14px; }
#main .gi .fb .fb-result__row div { padding: 8px; border-radius: 12px; background: rgba(255,255,255,.08); }
#main .gi .fb .fb-result__row small { display: block; font-size: 12px; color: rgba(255,255,255,.7); }
#main .gi .fb .fb-result__row b { font-size: 18px; }
#main .gi .fb .fb-result__note { margin: 12px 0 0; font-size: 14px; color: #fde68a; }
#main .gi .fb .fb-result__sec { margin-top: 18px; }
#main .gi .fb .fb-result__sec h3 { margin: 0 0 8px; font-size: 17px; }
#main .gi .fb .fb-wrong { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; }
#main .gi .fb .fb-wrong li { display: grid; gap: 4px; padding: 12px 14px; border: 1px solid var(--fb-line); border-left: 4px solid #ef4444; border-radius: 12px; background: #fff; }
#main .gi .fb .fb-wrong .fb-sent { font-size: 16px; }
#main .gi .fb .fb-wrong__ko { font-size: 13.5px; color: var(--fb-mute); }
#main .gi .fb .fb-wrong__why { font-size: 14px; color: #14532d; font-weight: 600; }
#main .gi .fb .fb-wrong__link { justify-self: start; font-size: 13px; font-weight: 700; color: var(--fb-accent); }
#main .gi .fb .fb-skills { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; font-size: 14px; }
#main .gi .fb .fb-skills li { display: flex; justify-content: space-between; gap: 10px; padding: 8px 12px; border-radius: 10px; background: #f1f5f9; }
#main .gi .fb .fb-skills b { color: var(--fb-ink); }
#main .gi .fb .fb-result__cta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

@media (max-width: 760px) {
    #main .gi .fb .fb-hero { padding: 16px; }
    #main .gi .fb .fb-hero__art { height: 200px; }
    #main .gi .fb .fb-ctl { grid-template-columns: 1fr 80px; }
    #main .gi .fb .fb-ctl__lanes button { font-size: 13.5px; }
    #main .gi .fb .fb-tip { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    #main .gi .fb .fb-hero__cloud, #main .gi .fb .fb-hero__bird, #main .gi .fb .fb-hero__ground, #main .gi .fb .fb-hero__labels i { animation: none; }
}