body {
    background: var(--parchment-dark);
}

.vtuber-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
    min-height: calc(100vh - 120px);
}

.vtuber-container {
    width: 100%;
    background: var(--parchment);
    border: 2px solid var(--ink);
    box-shadow: 0 2px 12px var(--shadow);
}

.vtuber-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 1.25rem;
    color: var(--parchment);
    text-align: center;
    background: var(--ink);
    border-bottom: 3px solid var(--gold);
}

.vtuber-icon {
    display: block;
    width: 54px;
    height: 54px;
    color: var(--gold);
}

.vtuber-icon path {
    fill: var(--gold);
}

.vtuber-hero h1 {
    margin: 0;
    color: var(--gold);
    font-size: 1.65rem;
    font-weight: normal;
    letter-spacing: 0.04em;
}

.vtuber-tagline {
    max-width: 36rem;
    margin: 0;
    color: var(--parchment);
    font-size: 0.98rem;
    opacity: 0.8;
}

.vtuber-interface {
    padding: 1.5rem 1.25rem 1.75rem;
}

.vtuber-form {
    margin: 0 0 1.15rem;
    padding-bottom: 1.15rem;
    border-bottom: 1px solid rgba(44, 36, 22, 0.18);
}

.vtuber-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--ink);
    font-size: 0.95rem;
    font-weight: bold;
    letter-spacing: 0.02em;
}

.vtuber-input-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.45rem;
}

.vtuber-input {
    min-width: 0;
    box-sizing: border-box;
    padding: 0.75rem;
    color: var(--ink);
    background: #fff;
    border: 1px solid var(--ink-light);
    font-family: "Courier New", monospace;
    font-size: 0.88rem;
}

.vtuber-input:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: inset 0 0 0 1px var(--gold);
}

.vtuber-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 44px;
    box-sizing: border-box;
    padding: 0.7rem 1.1rem;
    color: var(--ink);
    background: var(--parchment-dark);
    border: 1px solid var(--ink);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: bold;
    cursor: pointer;
}

.vtuber-btn:hover:not(:disabled) {
    color: var(--parchment);
    background: var(--ink);
}

.vtuber-btn:disabled {
    cursor: wait;
    opacity: 0.55;
}

.vtuber-btn-primary {
    width: 100%;
    color: var(--parchment);
    background: var(--accent);
    border-color: var(--accent-dark);
    white-space: nowrap;
}

.vtuber-btn-primary:hover:not(:disabled) {
    background: var(--accent-dark);
}

.vtuber-loading {
    padding: 1rem 0;
    color: var(--ink-light);
    text-align: center;
}

.vtuber-loading-icon {
    display: block;
    width: 44px;
    height: 44px;
    margin: 0 auto 0.8rem;
    animation: vtuber-pulse 1.1s ease-in-out infinite;
}

.vtuber-loading p {
    margin: 0;
}

@keyframes vtuber-pulse {
    0%, 100% { opacity: 0.25; transform: scale(0.94); }
    50% { opacity: 0.9; transform: scale(1); }
}

.vtuber-error {
    margin-bottom: 1rem;
    padding: 1rem;
    color: #722;
    background: #fdf0f0;
    border: 1px solid #a33;
}

.vtuber-error p {
    margin: 0;
}

.vtuber-preview {
    margin: 0;
}

.vtuber-preview-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 230px;
    gap: 1.5rem;
    align-items: center;
}

.vtuber-sprite-stage {
    position: relative;
    display: grid;
    width: 100%;
    max-width: 430px;
    aspect-ratio: 1;
    margin: 0 auto;
    overflow: hidden;
    place-items: center;
    background-color: #f6f2e8;
    background-image:
        linear-gradient(45deg, rgba(44, 36, 22, 0.08) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(44, 36, 22, 0.08) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(44, 36, 22, 0.08) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(44, 36, 22, 0.08) 75%);
    background-position: 0 0, 0 12px, 12px -12px, -12px 0;
    background-size: 24px 24px;
    border: 2px solid var(--ink);
}

.vtuber-sprite-warning {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    box-sizing: border-box;
    padding: clamp(1rem, 7%, 2.5rem);
    color: #722;
    background: rgba(253, 240, 240, 0.94);
    text-align: center;
}

.vtuber-sprite-warning[hidden] {
    display: none;
}

.vtuber-sprite-warning p {
    max-width: 22rem;
    margin: 0;
    line-height: 1.5;
}

.vtuber-sprite-warning a {
    color: #722;
    font-weight: bold;
    text-decoration-thickness: 2px;
    text-underline-offset: 0.2em;
}

.vtuber-sprite-warning a:hover {
    color: var(--accent-dark);
}

.vtuber-sprite {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated;
}

.vtuber-controls {
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

.vtuber-state-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.85rem;
}

.vtuber-kicker {
    color: var(--ink-light);
    font-size: 0.68rem;
    font-weight: bold;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.vtuber-beard-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--ink-light);
    font-size: 0.75rem;
    font-weight: bold;
    cursor: pointer;
}

.vtuber-beard-toggle input {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
}

.vtuber-toggle-track {
    position: relative;
    width: 34px;
    height: 18px;
    flex: 0 0 auto;
    background: rgba(44, 36, 22, 0.25);
    border: 1px solid rgba(44, 36, 22, 0.45);
    border-radius: 9px;
    transition: background 120ms ease;
}

.vtuber-toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 12px;
    height: 12px;
    background: var(--parchment);
    border: 1px solid var(--ink-light);
    border-radius: 50%;
    transition: transform 120ms ease;
}

.vtuber-beard-toggle input:checked + .vtuber-toggle-track {
    background: var(--accent);
    border-color: var(--accent-dark);
}

.vtuber-beard-toggle input:checked + .vtuber-toggle-track .vtuber-toggle-thumb {
    transform: translateX(16px);
}

.vtuber-beard-toggle input:focus-visible + .vtuber-toggle-track {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.vtuber-state-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.45rem;
}

.vtuber-state-btn {
    min-height: 42px;
    padding: 0.45rem 0.35rem;
    color: var(--ink-light);
    background: transparent;
    border: 1px solid rgba(44, 36, 22, 0.35);
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: bold;
    cursor: pointer;
}

.vtuber-state-btn:hover {
    border-color: var(--accent);
}

.vtuber-state-btn[aria-pressed="true"] {
    color: var(--parchment);
    background: var(--ink);
    border-color: var(--ink);
}

.vtuber-download {
    width: 100%;
    margin-top: 1rem;
    color: var(--parchment);
    background: var(--accent);
    border-color: var(--accent-dark);
}

.vtuber-download svg {
    width: 20px;
    height: 20px;
}

.vtuber-credit {
    display: block;
    width: fit-content;
    margin: 0.65rem auto 0;
    color: var(--ink-light);
    font-size: 0.82rem;
    text-align: center;
}

.vtuber-credit:hover {
    color: var(--accent-dark);
}

@media (max-width: 700px) {
    .vtuber-page {
        padding: 1rem 0.75rem 2rem;
    }

    .vtuber-hero {
        padding: 1.25rem 1rem;
    }

    .vtuber-hero h1 {
        font-size: 1.5rem;
    }

    .vtuber-tagline {
        font-size: 0.92rem;
    }

    .vtuber-interface {
        padding: 1rem;
    }

    .vtuber-icon {
        width: 40px;
        height: 40px;
    }

    .vtuber-preview-layout {
        grid-template-columns: 1fr;
    }

    .vtuber-controls {
        max-width: 430px;
        margin: 0 auto;
    }

    .vtuber-state-buttons {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 520px) {
    .vtuber-input-row {
        grid-template-columns: 1fr;
    }

    .vtuber-state-buttons {
        grid-template-columns: 1fr 1fr;
    }

    .vtuber-state-btn {
        font-size: 0.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .vtuber-loading-icon {
        animation: none;
    }
}