/* Mini novela visual de inicio. Extiende los componentes de Mitsuki. */
.start-intro-overlay {
    z-index: 10000001;
    padding: clamp(8px, 2vw, 20px);
    background:
        radial-gradient(circle at 50% 20%, rgba(138, 43, 226, 0.2), transparent 38%),
        rgba(0, 0, 0, 0.94);
}

.start-intro-vn-box {
    width: min(96vw, 1040px);
    max-height: calc(100dvh - 16px);
}

.start-intro-vn-screen {
    width: 100%;
    max-height: calc(100dvh - 16px);
    min-height: min(92dvh, 760px);
}

.start-intro-header {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 14px;
    min-height: 48px;
}

.start-intro-skip {
    padding: 5px 10px;
    color: #fff;
    background: #240012;
    border: 2px solid #ff0044;
    box-shadow: 3px 3px 0 #000;
    font-family: var(--font-terminal);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}

.start-intro-skip:hover,
.start-intro-skip:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 2px;
    color: #05000a;
    background: #ff0044;
}

.start-intro-skip[hidden] {
    display: none;
}

.footer-secret-reset {
    position: relative;
    z-index: 1;
    margin-top: 8px;
    padding: 3px 8px;
    color: #747474;
    background: rgba(0, 0, 0, 0.42);
    border: 1px dashed #444;
    font-family: var(--font-terminal);
    font-size: 13px;
    letter-spacing: 1px;
    opacity: 0.28;
    cursor: pointer;
    transition: opacity 0.16s, color 0.16s, border-color 0.16s, box-shadow 0.16s;
}

.footer-secret-reset:hover,
.footer-secret-reset:focus-visible {
    outline: none;
    color: #fff;
    border-color: #ff0044;
    box-shadow: 0 0 10px rgba(255, 0, 68, 0.4);
    opacity: 1;
}

.start-intro-confirm {
    position: fixed;
    inset: 0;
    z-index: 10000002;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 18px;
    background:
        repeating-linear-gradient(0deg, rgba(0, 255, 255, 0.04) 0 2px, transparent 2px 8px),
        rgba(0, 0, 0, 0.82);
    font-family: var(--font-terminal);
}

.start-intro-confirm.is-open {
    display: flex;
}

.start-intro-confirm-box {
    width: min(92vw, 520px);
    color: #fff;
    background: #08010f;
    border: 3px solid #fff;
    box-shadow: 9px 9px 0 #000, 0 0 22px rgba(255, 0, 68, 0.45);
    animation: start-intro-confirm-in 0.18s steps(4, end);
}

.start-intro-confirm-titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 10px;
    color: var(--neon-cyan);
    background: #240012;
    border-bottom: 3px solid #ff0044;
    font-size: 20px;
}

.start-intro-confirm-x,
.start-intro-confirm-actions button {
    color: #fff;
    background: #1a1a1a;
    border: 3px solid var(--neon-cyan);
    box-shadow: 4px 4px 0 #000;
    font-family: var(--font-terminal);
    cursor: pointer;
}

.start-intro-confirm-x {
    padding: 2px 8px;
    font-size: 18px;
}

.start-intro-confirm p {
    margin: 0;
    padding: 18px;
    font-size: 22px;
    line-height: 1.08;
}

.start-intro-confirm-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 0 18px 18px;
}

.start-intro-confirm-actions button {
    min-width: 132px;
    padding: 8px 12px;
    font-size: 22px;
}

.start-intro-confirm-actions button:last-child {
    color: #05000a;
    background: #ff0044;
    border-color: #fff;
}

.start-intro-confirm-x:hover,
.start-intro-confirm-x:focus-visible,
.start-intro-confirm-actions button:hover,
.start-intro-confirm-actions button:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 2px;
}

.start-intro-scene {
    min-height: 0;
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
}

.start-intro-scene[hidden],
.start-intro-bsod[hidden] {
    display: none;
}

.start-intro-scene.is-entering {
    pointer-events: none;
    animation: start-intro-scene-in 0.28s steps(5, end);
}

.start-intro-visual {
    --intro-bg-a: rgba(95, 31, 148, 0.44);
    --intro-bg-b: rgba(7, 10, 25, 0.96);
    --intro-bg-c: rgba(255, 0, 118, 0.16);
    --intro-stripe: rgba(0, 255, 255, 0.08);
    position: relative;
    height: clamp(250px, 52dvh, 490px);
    background-position: center;
    background-size: cover;
    background:
        radial-gradient(circle at 50% 34%, var(--intro-bg-c), transparent 35%),
        linear-gradient(120deg, var(--intro-bg-b), var(--intro-bg-a) 52%, #08000e);
    overflow: hidden;
    isolation: isolate;
}

.start-intro-visual[data-scene="panic-leader"],
.start-intro-visual[data-scene="sabotage-attempt"] {
    --intro-bg-a: rgba(95, 31, 148, 0.58);
    --intro-bg-b: rgba(4, 10, 24, 0.98);
    --intro-bg-c: rgba(176, 56, 255, 0.28);
    --intro-stripe: rgba(0, 255, 255, 0.08);
}

.start-intro-visual[data-scene="punk-kick"],
.start-intro-visual[data-scene="reality-check"] {
    --intro-bg-a: rgba(255, 84, 24, 0.32);
    --intro-bg-b: rgba(10, 7, 20, 0.98);
    --intro-bg-c: rgba(255, 116, 45, 0.2);
    --intro-stripe: rgba(255, 120, 30, 0.13);
}

.start-intro-visual[data-scene="pastel-invasion"] {
    --intro-bg-a: rgba(255, 122, 198, 0.44);
    --intro-bg-b: rgba(30, 7, 34, 0.98);
    --intro-bg-c: rgba(255, 169, 221, 0.3);
    --intro-stripe: rgba(255, 176, 226, 0.15);
}

.start-intro-visual[data-scene="ultimatum"] {
    --intro-bg-a: rgba(255, 44, 108, 0.4);
    --intro-bg-b: rgba(8, 6, 21, 0.98);
    --intro-bg-c: rgba(255, 150, 30, 0.24);
    --intro-stripe: rgba(255, 73, 26, 0.16);
}

.start-intro-visual[data-scene="mental-collapse"] {
    --intro-bg-a: rgba(167, 0, 52, 0.7);
    --intro-bg-b: rgba(3, 8, 22, 0.98);
    --intro-bg-c: rgba(255, 0, 80, 0.42);
    --intro-stripe: rgba(255, 0, 68, 0.22);
}

.start-intro-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        linear-gradient(90deg, var(--intro-stripe), transparent 25%, transparent 75%, rgba(255, 0, 68, 0.1)),
        repeating-linear-gradient(112deg, transparent 0 68px, rgba(255, 255, 255, 0.035) 70px 74px, transparent 76px 132px);
    animation: start-intro-bg-pan 7s linear infinite;
    pointer-events: none;
}

.start-intro-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(circle at 18% 86%, rgba(0, 255, 255, 0.12), transparent 24%),
        radial-gradient(circle at 82% 16%, rgba(255, 255, 255, 0.06), transparent 18%);
    mix-blend-mode: screen;
    pointer-events: none;
}

.start-intro-sprites,
.start-intro-effects {
    position: absolute;
    inset: 0;
}

.start-intro-sprites {
    z-index: 1;
}

.start-intro-sprite {
    position: absolute;
    z-index: var(--intro-sprite-layer);
    left: var(--intro-sprite-x, 50%);
    top: var(--intro-sprite-y, 50%);
    width: var(--intro-sprite-size);
    max-width: 94%;
    max-height: 100%;
    object-fit: contain;
    object-position: var(--intro-sprite-position);
    image-rendering: auto;
    filter: drop-shadow(8px 8px 0 rgba(0, 0, 0, 0.82));
    transform: translate(-50%, -50%);
}

.start-intro-sprite.is-kick { animation: start-intro-kick 0.28s steps(5, end); }
.start-intro-sprite.is-slide-left { animation: start-intro-slide-left 0.28s steps(5, end); }
.start-intro-sprite.is-slide-right { animation: start-intro-slide-right 0.28s steps(5, end); }
.start-intro-sprite.is-float { animation: start-intro-float-in 0.35s ease-out; }
.start-intro-sprite.is-group { animation: start-intro-group-in 0.32s steps(5, end); }
.start-intro-sprite.is-overload { animation: start-intro-overload 0.18s steps(2, end) infinite; }

.start-intro-effects {
    z-index: 3;
    overflow: hidden;
    pointer-events: none;
}

.start-intro-effects.has-pastel-sparkles::before {
    content: "✦  ✧  ♥  ✦  ♥";
    position: absolute;
    inset: 8% 5% auto;
    color: #ff8ad8;
    font-size: clamp(20px, 5vw, 48px);
    word-spacing: 7vw;
    text-shadow: 0 0 10px #fff;
    animation: start-intro-sparkle 1.2s steps(4, end) infinite;
}

.start-intro-effects.has-concert-flash::before {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(115deg, transparent 0 14%, rgba(255, 69, 0, 0.2) 15% 17%, transparent 18% 28%);
    animation: start-intro-concert 0.8s steps(3, end) infinite;
}

.start-intro-effects.has-red-static::before,
.start-intro-effects.has-red-static::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(0deg, rgba(255, 0, 30, 0.18) 0 2px, transparent 2px 5px),
        repeating-linear-gradient(90deg, transparent 0 13px, rgba(255, 0, 68, 0.22) 14px 17px);
    mix-blend-mode: screen;
    animation: start-intro-static 0.13s steps(2, end) infinite;
}

.start-intro-effects.has-red-static::after {
    inset: 18% -10%;
    background: rgba(255, 0, 40, 0.24);
    animation-duration: 0.19s;
}

.start-intro-effects.has-persistent-glitch {
    background:
        linear-gradient(90deg, rgba(0, 255, 255, 0.1), transparent 18%, transparent 82%, rgba(255, 0, 68, 0.12)),
        repeating-linear-gradient(180deg, transparent 0 9px, rgba(255, 255, 255, 0.04) 10px 11px);
    mix-blend-mode: screen;
    animation: start-intro-persistent-glitch 0.34s steps(2, end) infinite;
}

.start-intro-effects.has-persistent-glitch::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, transparent 0 18%, rgba(0, 255, 255, 0.16) 19% 21%, transparent 22% 54%, rgba(255, 0, 68, 0.14) 55% 57%, transparent 58%),
        repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 7px);
    transform: translateX(-2%);
    animation: start-intro-glitch-slice 0.22s steps(2, end) infinite;
}

.start-intro-effects.has-anxious-overload::after {
    content: "ANXIOUS_OVERLOAD // 999%";
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 5px 8px;
    color: #fff;
    background: #a00020;
    border: 2px solid #fff;
    font-family: var(--font-pixel);
    font-size: clamp(12px, 2.5vw, 20px);
    box-shadow: 5px 5px 0 #000;
}

.start-intro-sprites.is-disintegrating {
    animation: start-intro-pixel-dissolve 1.15s steps(10, end) 0.35s both;
}

.start-intro-vn-screen.has-scene-glitch {
    animation: start-intro-screen-glitch 0.22s steps(2, end) infinite;
}

.start-intro-dialogue {
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.start-intro-dialogue:focus-visible,
.start-intro-continue:focus-visible {
    outline: 3px solid var(--neon-cyan);
    outline-offset: 3px;
}

.start-intro-speaker {
    max-width: 100%;
}

.start-intro-text {
    max-height: 7.4em;
    overflow-y: auto;
}

.start-intro-continue {
    flex-shrink: 0;
}

.start-intro-bsod {
    flex: 1 1 auto;
    min-height: 0;
    padding: clamp(18px, 4vw, 42px);
    overflow-y: auto;
    color: #fff;
    background: #0754b8;
    font-family: var(--font-terminal);
    text-align: left;
    text-shadow: 2px 2px 0 rgba(0, 0, 70, 0.45);
}

.start-intro-bsod-brand {
    display: inline-block;
    margin-bottom: 18px;
    padding: 3px 8px;
    color: #0754b8;
    background: #fff;
    font-size: clamp(17px, 3vw, 24px);
}

.start-intro-bsod-title {
    margin: 0 0 18px;
    font-size: clamp(25px, 5vw, 48px);
    line-height: 1;
}

.start-intro-bsod-copy,
.start-intro-bsod-list,
.start-intro-bsod-restart,
.start-intro-bsod-code {
    max-width: 900px;
    margin: 0 0 14px;
    font-size: clamp(15px, 2.3vw, 22px);
    line-height: 1.18;
}

.start-intro-bsod-list {
    padding-left: 26px;
    list-style: "*  ";
}

.start-intro-bsod-restart {
    margin-top: 20px;
    animation: start-intro-bsod-blink 0.35s steps(2, end) infinite;
}

.start-intro-bsod-code {
    color: #d8efff;
}

.start-intro-vn-screen.is-bsod {
    border-color: #fff;
    background: #0754b8;
    box-shadow: 0 0 0 5px #0754b8, 12px 12px 0 #000;
}

.start-intro-vn-screen.is-bsod .start-intro-header {
    color: #fff;
    background: #043c86;
    border-color: #fff;
}

.start-intro-blackout {
    position: fixed;
    inset: 0;
    z-index: 20;
    visibility: hidden;
    opacity: 0;
    background: #000;
    pointer-events: none;
    transition: opacity 0.32s linear, visibility 0.32s linear;
}

.start-intro-overlay.is-blackout .start-intro-blackout,
.start-intro-overlay:has(.start-intro-vn-screen.is-fading-black) .start-intro-blackout {
    visibility: visible;
    opacity: 1;
}

@keyframes start-intro-scene-in {
    0% { opacity: 0; filter: contrast(2) hue-rotate(40deg); transform: translateX(10px); }
    100% { opacity: 1; filter: none; transform: none; }
}

@keyframes start-intro-confirm-in {
    0% { opacity: 0; transform: translate(-8px, 6px); filter: contrast(2); }
    100% { opacity: 1; transform: translate(0); filter: contrast(1); }
}

@keyframes start-intro-bg-pan {
    0% { background-position: 0 0, 0 0; }
    100% { background-position: 0 0, 132px 0; }
}

@keyframes start-intro-kick {
    0% { transform: translate(70%, -45%) rotate(8deg); }
    100% { transform: translate(-50%, -50%); }
}

@keyframes start-intro-slide-left {
    0% { transform: translate(-130%, -50%); }
    100% { transform: translate(-50%, -50%); }
}

@keyframes start-intro-slide-right {
    0% { transform: translate(40%, -50%); }
    100% { transform: translate(-50%, -50%); }
}

@keyframes start-intro-float-in {
    0% { opacity: 0; transform: translate(-50%, -35%) scale(0.9); }
    100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

@keyframes start-intro-group-in {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(1.3); }
    100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

@keyframes start-intro-overload {
    0% { transform: translate(-52%, -50%) skew(-1deg); filter: drop-shadow(-7px 0 #f00); }
    100% { transform: translate(-48%, -50%) skew(1deg); filter: drop-shadow(7px 0 #00ffff); }
}

@keyframes start-intro-static {
    0% { transform: translate(-3%, -2%); opacity: 0.75; }
    100% { transform: translate(3%, 2%); opacity: 0.35; }
}

@keyframes start-intro-pixel-dissolve {
    0% { opacity: 1; filter: none; clip-path: inset(0); }
    70% { opacity: 0.7; filter: contrast(3) saturate(4); clip-path: inset(0 0 35% 0); }
    100% { opacity: 0; filter: contrast(5); clip-path: inset(0 0 100% 0); }
}

@keyframes start-intro-screen-glitch {
    0% { transform: translateX(-2px); filter: hue-rotate(-8deg); }
    100% { transform: translateX(2px); filter: hue-rotate(8deg); }
}

@keyframes start-intro-persistent-glitch {
    0%, 100% { opacity: 0.72; transform: translate(0); }
    33% { opacity: 0.9; transform: translate(-3px, 1px); }
    66% { opacity: 0.82; transform: translate(3px, -1px); }
}

@keyframes start-intro-glitch-slice {
    0%, 100% { clip-path: inset(0 0 0 0); transform: translateX(-2%); }
    40% { clip-path: inset(12% 0 58% 0); transform: translateX(3%); }
    70% { clip-path: inset(62% 0 14% 0); transform: translateX(-4%); }
}

@keyframes start-intro-sparkle {
    0%, 100% { opacity: 0.35; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(-8px); }
}

@keyframes start-intro-concert {
    0%, 100% { opacity: 0.25; transform: translateX(-5%); }
    50% { opacity: 0.8; transform: translateX(5%); }
}

@keyframes start-intro-bsod-blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0.55; }
}

@media (max-width: 640px) {
    .start-intro-overlay { padding: 6px; }
    .start-intro-vn-box,
    .start-intro-vn-screen { max-height: calc(100dvh - 12px); }
    .start-intro-vn-screen {
        height: auto;
        min-height: 0;
    }
    .start-intro-header {
        grid-template-columns: 1fr auto;
        gap: 5px 8px;
        padding: 7px 9px;
        font-size: 15px;
    }
    .start-intro-skip {
        grid-column: 1 / -1;
        min-height: 34px;
        font-size: 17px;
    }
    .start-intro-visual { height: clamp(250px, 42dvh, 360px); }
    .start-intro-sprite {
        max-width: 98%;
        max-height: 112%;
    }
    .start-intro-dialogue {
        align-items: flex-start;
        margin: 6px 7px;
        width: calc(100% - 14px);
        padding: 8px;
    }
    .start-intro-portrait { width: 58px; height: 58px; }
    .start-intro-text {
        max-height: 8.2em;
        font-size: 13px;
        line-height: 1.3;
    }
    .start-intro-continue {
        width: calc(100% - 14px);
        min-height: 40px;
        margin: 0 7px 10px;
        padding: 6px 12px;
        font-size: 22px;
    }
    .start-intro-bsod { padding: 14px; }
    .start-intro-bsod-brand { margin-bottom: 10px; }
    .start-intro-bsod-copy,
    .start-intro-bsod-list,
    .start-intro-bsod-restart,
    .start-intro-bsod-code { margin-bottom: 9px; line-height: 1.08; }
}

@media (prefers-reduced-motion: reduce) {
    .start-intro-scene,
    .start-intro-sprite,
    .start-intro-sprites,
    .start-intro-effects::before,
    .start-intro-effects::after,
    .start-intro-vn-screen,
    .start-intro-bsod-restart {
        animation: none !important;
        transform: none;
    }
    .start-intro-sprite { transform: translate(-50%, -50%); }
    .start-intro-sprites.is-disintegrating { opacity: 0.72; }
}

/* AkaneBook solid chrome: keep VN windows away from pink/cyan title gradients. */
.start-intro-header {
    color: #ffffff;
    background: #4c001b;
    border-bottom: 3px solid #ff0044;
    text-shadow: 2px 2px 0 #000;
}

.start-intro-vn-screen.is-bsod .start-intro-header {
    background: #00336f;
    border-bottom-color: #8fc9ff;
}

.start-intro-confirm-titlebar {
    color: #ffffff;
    background: #4c001b;
    border-bottom-color: #ff0044;
    text-shadow: 2px 2px 0 #000;
}