/**
 * Nothing is Structural
 * Interactive Subtraction Machine + Essay treatment styles
 * Uses site design tokens (dark theme, white opacity layers)
 */

/* === Essay Treatment === */

.ns-essay.prose p {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    line-height: 2.0;
}

.ns-essay.prose h2 {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 3rem;
}

.ns-essay.prose hr {
    max-width: 640px;
    margin: 96px auto;
    border: none;
}

.ns-essay.prose blockquote {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    border-left: none;
    padding-left: 0;
    font-style: italic;
    color: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
}

.ns-essay.prose ul,
.ns-essay.prose ol {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

/* === Shared Interactive Styles === */

.ns-viz {
    max-width: 640px;
    margin: var(--spacing-lg, 2rem) auto;
    padding: var(--spacing-md, 1.5rem) var(--spacing-lg, 2rem);
    background: var(--color-bg-elevated, #111111);
    border-radius: var(--radius-md, 16px);
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
}

.ns-ratio {
    font-size: var(--font-size-sm, 0.875rem);
    font-family: var(--font-mono, 'SF Mono', Monaco, monospace);
    color: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
    margin-bottom: 0.25rem;
}

.ns-hint {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-text-tertiary, rgba(255, 255, 255, 0.55));
    margin: 0 0 0.75rem;
    line-height: 1.5;
}

/* === Erasure Poetry Interactive === */

.ns-erasure-field {
    line-height: 2.4;
    padding: 0.5rem 0 0.25rem;
}

.ns-word {
    display: inline;
    background: transparent;
    border: none;
    padding: 3px 1px;
    margin: 0;
    cursor: pointer;
    font-family: inherit;
    font-size: var(--font-size-base, 1rem);
    color: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
    line-height: inherit;
    border-radius: 2px;
    transition: color var(--transition-fast, 150ms ease),
                background var(--transition-fast, 150ms ease);
}

.ns-word:hover {
    background: rgba(255, 255, 255, 0.06);
}

.ns-word:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 1px;
}

.ns-word.ns-erased {
    color: transparent;
    background: rgba(255, 255, 255, 0.04);
    user-select: none;
    cursor: pointer;
}

/* Erasure actions bar */

.ns-erasure-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    align-items: center;
    justify-content: center;
}

.ns-action-btn {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 6px;
    background: transparent;
    color: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
    font-size: var(--font-size-sm, 0.875rem);
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    min-height: 48px;
    transition: all var(--transition-fast, 150ms ease);
}

.ns-action-btn:hover {
    border-color: var(--color-border-hover, rgba(255, 255, 255, 0.2));
    color: var(--color-text-primary, #ffffff);
}

.ns-action-btn:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 2px;
}

/* Done label */

.ns-done-label {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--color-text-tertiary, rgba(255, 255, 255, 0.55));
    text-align: center;
    font-style: italic;
    margin: 0.5rem 0 0;
}

/* Reset button */

.ns-reset-btn {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 6px;
    background: transparent;
    color: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
    font-size: var(--font-size-sm, 0.875rem);
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    margin: var(--spacing-sm, 1rem) auto 0;
    display: block;
    text-align: center;
    transition: all var(--transition-fast, 150ms ease);
}

.ns-reset-btn:hover {
    border-color: var(--color-border-hover, rgba(255, 255, 255, 0.2));
    color: var(--color-text-primary, #ffffff);
}

.ns-reset-btn:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 2px;
}

/* Noscript */

.ns-noscript {
    padding: var(--spacing-sm, 1rem);
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: var(--radius-sm, 8px);
    color: var(--color-text-tertiary, rgba(255, 255, 255, 0.55));
    font-size: var(--font-size-sm, 0.875rem);
    text-align: center;
    max-width: 640px;
    margin: var(--spacing-lg, 2rem) auto;
}

/* === Structural Silence Interactive === */

.ns-silence-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    outline: none;
    margin: 0.25rem 0 0;
}

.ns-silence-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
    cursor: pointer;
    border: none;
}

.ns-silence-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
    cursor: pointer;
    border: none;
}

.ns-silence-slider:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 2px;
}

.ns-silence-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 0;
    min-height: 48px;
}

.ns-note-block {
    height: 24px;
    background: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
    border-radius: 2px;
    flex-shrink: 0;
    transition: background var(--transition-fast, 150ms ease);
}

.ns-note-block.ns-note-active {
    background: var(--color-text-primary, #ffffff);
}

.ns-note-gap {
    height: 24px;
    flex-shrink: 0;
    transition: width var(--transition-fast, 150ms ease);
}

.ns-play-btn {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
    border-radius: 6px;
    background: transparent;
    color: var(--color-text-secondary, rgba(255, 255, 255, 0.65));
    font-size: var(--font-size-sm, 0.875rem);
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    margin: 0.25rem 0 0;
    min-height: 48px;
    transition: all var(--transition-fast, 150ms ease);
}

.ns-play-btn:hover {
    border-color: var(--color-border-hover, rgba(255, 255, 255, 0.2));
    color: var(--color-text-primary, #ffffff);
}

.ns-play-btn:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 2px;
}

.ns-play-btn:disabled {
    opacity: 0.5;
    cursor: default;
}

/* === Responsive === */

@media (max-width: 600px) {
    .ns-viz {
        padding: var(--spacing-sm, 1rem);
        margin: var(--spacing-sm, 1rem) auto;
        border-radius: var(--radius-sm, 8px);
    }

    .ns-word {
        padding: 4px 2px;
    }

    .ns-essay.prose hr {
        margin: 48px auto;
    }

    .ns-play-btn {
        width: 100%;
    }
}

/* === Reduced motion === */

@media (prefers-reduced-motion: reduce) {
    .ns-word,
    .ns-action-btn,
    .ns-reset-btn,
    .ns-play-btn,
    .ns-note-block,
    .ns-note-gap {
        transition: none;
    }

}