/**
 * 汎用カットインオーバーレイ
 * spec: docs/features/battle-entry-cutin-popup/spec.md
 *
 * z-index 100004 — コイン不足モーダル(100010) / 落札結果ポップアップ(100005) /
 * エントリー完了 POPUP(10000001) より背面。時系列でカットイン→POPUPの順に重ならない。
 */

#cutin-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 100004;
    pointer-events: none;
    --cutin-hot: #ffa940;
    --cutin-glow: rgba(255, 140, 40, 0.75);
    --cutin-volt: #ffd166;
}

#cutin-overlay.play {
    display: block;
}

#cutin-overlay .cutin-flash {
    position: absolute;
    inset: 0;
    background: #fff;
    opacity: 0;
    animation: cutin-flash 0.5s ease-out;
}

@keyframes cutin-flash {
    0% { opacity: 0; }
    8% { opacity: 0.8; }
    100% { opacity: 0; }
}

#cutin-overlay .cutin-band {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 38vh;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 6vw;
    opacity: 0;
    background:
        linear-gradient(180deg,
            var(--cutin-hot) 0%,
            var(--cutin-glow) 6%,
            rgba(8, 4, 16, 0.18) 22%,
            rgba(5, 8, 20, 0.32) 42%,
            rgba(5, 8, 20, 0.35) 50%,
            rgba(5, 8, 20, 0.32) 58%,
            rgba(8, 4, 16, 0.18) 78%,
            var(--cutin-glow) 94%,
            var(--cutin-hot) 100%);
    box-shadow: 0 0 80px 12px var(--cutin-glow);
    animation: cutin-band 2.4s ease-out forwards;
}

@keyframes cutin-band {
    0%   { opacity: 0; }
    8%   { opacity: 1; }
    88%  { opacity: 1; }
    100% { opacity: 0; }
}

#cutin-overlay .cutin-band::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 15% 30%, #fff, transparent),
        radial-gradient(2px 2px at 40% 70%, #fff, transparent),
        radial-gradient(3px 3px at 65% 25%, #fff, transparent),
        radial-gradient(2px 2px at 80% 60%, #fff, transparent),
        radial-gradient(2px 2px at 25% 55%, #fff, transparent),
        radial-gradient(3px 3px at 55% 45%, #fff, transparent),
        radial-gradient(2px 2px at 90% 35%, #fff, transparent);
    animation: cutin-twinkle 0.7s ease-in-out infinite alternate;
    animation-play-state: paused;
    pointer-events: none;
}
#cutin-overlay.play .cutin-band::after {
    animation-play-state: running;
}

@keyframes cutin-twinkle {
    from { opacity: 0.3; }
    to { opacity: 1; }
}

#cutin-overlay .cutin-frame-top,
#cutin-overlay .cutin-frame-bottom {
    position: absolute;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--cutin-volt) 10%,
        #fff 50%,
        var(--cutin-volt) 90%,
        transparent 100%);
    box-shadow: 0 0 12px var(--cutin-glow), 0 0 24px var(--cutin-glow);
    opacity: 0;
    animation: cutin-frame 2.4s ease-out forwards;
}

#cutin-overlay .cutin-frame-top { top: 0; }
#cutin-overlay .cutin-frame-bottom { bottom: 0; }

@keyframes cutin-frame {
    0% { opacity: 0; }
    12% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; }
}

#cutin-overlay .cutin-rain {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    mix-blend-mode: screen;
    opacity: 0;
    animation: cutin-rain-fade 2.4s ease-out forwards;
}

@keyframes cutin-rain-fade {
    0% { opacity: 0; }
    14% { opacity: 1; }
    78% { opacity: 1; }
    100% { opacity: 0; }
}

#cutin-overlay .cutin-streak {
    position: absolute;
    left: 0;
    height: 2px;
    width: 34%;
    top: var(--top, 50%);
    transform: translateX(130%);
    border-radius: 4px;
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(220, 240, 255, 0.6) 45%,
        #ffffff 70%,
        rgba(255, 255, 255, 0) 100%);
    filter: drop-shadow(0 0 3px rgba(200, 230, 255, 0.9));
    animation: cutin-streak var(--dur, 0.6s) linear var(--delay, 0s) infinite;
    animation-play-state: paused;
}
#cutin-overlay.play .cutin-streak {
    animation-play-state: running;
}

@keyframes cutin-streak {
    0%   { transform: translateX(130%); opacity: 0; }
    12%  { opacity: 1; }
    82%  { opacity: 1; }
    100% { transform: translateX(-150%); opacity: 0; }
}

#cutin-overlay .cutin-icon-wrap {
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: cutin-icon-flow 2.4s cubic-bezier(.22, .8, .3, 1) forwards;
}

@keyframes cutin-icon-flow {
    0%   { transform: translateX(120vw) scale(0.85); opacity: 0; }
    12%  { transform: translateX(0) scale(1.05); opacity: 1; }
    22%  { transform: translateX(0) scale(1); opacity: 1; }
    70%  { transform: translateX(0) scale(1); opacity: 1; }
    100% { transform: translateX(-120vw) scale(0.85); opacity: 0; }
}

#cutin-overlay .cutin-icon {
    width: clamp(96px, 18vw, 180px);
    height: clamp(96px, 18vw, 180px);
    border-radius: 50%;
    border: 4px solid #fff;
    box-shadow: 0 0 24px rgba(255, 220, 120, 0.85), 0 6px 20px rgba(0, 0, 0, 0.5);
    background: #2a1c3a;
    position: relative;
    overflow: hidden;
}

#cutin-overlay .cutin-icon .cutin-icon-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#cutin-overlay .cutin-you-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    padding: 3px 8px;
    border-radius: 10px;
    background: linear-gradient(135deg, #ff3838 0%, #b81616 100%);
    color: #fff;
    font-size: 12px;
    font-weight: 900;
    font-style: italic;
    letter-spacing: 0.05em;
    line-height: 1;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45), 0 0 10px rgba(255, 100, 100, 0.7);
    border: 2px solid #fff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
    z-index: 3;
}
#cutin-overlay .cutin-you-badge[hidden] {
    display: none;
}

#cutin-overlay .cutin-name-wrap {
    position: relative;
    z-index: 2;
    text-align: right;
    opacity: 0;
    animation: cutin-name-fade 2.4s ease-out forwards;
}

@keyframes cutin-name-fade {
    0%   { transform: translateX(80px); opacity: 0; }
    18%  { transform: translateX(0); opacity: 1; }
    72%  { transform: translateX(0); opacity: 1; }
    100% { transform: translateX(40px); opacity: 0; }
}

#cutin-overlay .cutin-headline {
    font-family: 'Zen Kaku Gothic New', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
    font-size: clamp(32px, 6.5vw, 72px);
    font-weight: 900;
    /* paint-order: stroke fill で白ストロークが外側 → その内側に赤フィル
       白い枠が大きくかつ文字色が濃くて視認性が高い */
    paint-order: stroke fill;
    -webkit-text-stroke: 6px #4a2408;
    color: #fff;
    letter-spacing: 2px;
    line-height: 1.15;
    text-shadow:
        3px 3px 0 #4a2408,
        0 4px 8px rgba(0, 0, 0, 0.55),
        0 0 22px var(--cutin-glow);
    margin-bottom: 8px;
    max-width: 88vw;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

#cutin-overlay .cutin-name {
    font-family: 'Zen Kaku Gothic New', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
    font-size: clamp(18px, 3vw, 32px);
    font-weight: 900;
    paint-order: stroke fill;
    -webkit-text-stroke: 4px #4a2408;
    color: #fff;
    letter-spacing: 1px;
    line-height: 1.2;
    text-shadow:
        2px 2px 0 #4a2408,
        0 3px 6px rgba(0, 0, 0, 0.55),
        0 0 14px var(--cutin-glow);
    max-width: 70vw;
    word-break: break-word;
    overflow-wrap: anywhere;
}

/* ダークモード配色調整（既存 dark-mode.css パレット流用） */
html.dark-mode-on #cutin-overlay {
    --cutin-hot: #7a8bff;
    --cutin-glow: rgba(122, 139, 255, 0.75);
    --cutin-volt: #a8b5ff;
}

@media (prefers-reduced-motion: reduce) {
    #cutin-overlay .cutin-flash,
    #cutin-overlay .cutin-band,
    #cutin-overlay .cutin-band::after,
    #cutin-overlay .cutin-frame-top,
    #cutin-overlay .cutin-frame-bottom,
    #cutin-overlay .cutin-rain,
    #cutin-overlay .cutin-streak,
    #cutin-overlay .cutin-icon-wrap,
    #cutin-overlay .cutin-name-wrap {
        animation: none !important;
    }
    #cutin-overlay.play .cutin-band,
    #cutin-overlay.play .cutin-icon-wrap,
    #cutin-overlay.play .cutin-name-wrap {
        opacity: 1;
        transform: none;
    }
    #cutin-overlay.play .cutin-flash {
        opacity: 0;
    }
}