/* ═══════════════════════════════════════════════
   VILLARI EFFECT VISUALIZATION
   Standalone component — toggle between passive
   hysteresis loop and active linear response.
   ═══════════════════════════════════════════════ */

/* Container */
.villari-viz {
    position: relative;
    width: 100%;
}

/* Hidden checkbox (accessible, but not visible) */
.villari-toggle-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

/* SVG graph */
.villari-graph {
    display: block;
    width: 100%;
    height: auto;
    max-height: 400px;
}

/* Grid lines — uses semantic token for theme support */
.villari-grid line {
    stroke: var(--border-subtle);
    stroke-width: 0.5;
}

/* Axes */
.villari-axes line {
    stroke: var(--text-muted);
    stroke-width: 1;
}

/* Axis labels */
.villari-axis-labels text {
    font-family: 'Roboto Mono', monospace;
    font-size: 11px;
    fill: var(--text-muted);
}
.villari-axis-title {
    font-size: 12px;
}

/* ── Passive State (default) ─────────────────── */

.passive-loop path {
    stroke: #C8922A;
    stroke-width: 2.5;
    stroke-linecap: round;
    fill: none;
    opacity: 1;
    transform: scaleX(1);
    transform-origin: center;
    transition: opacity 500ms cubic-bezier(0.4, 0, 0.2, 1),
                transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Active State (hidden by default) ────────── */

.active-line line {
    stroke: var(--c-tech-blue);
    stroke-width: 2;
    stroke-linecap: square;
}
.active-line > line {
    opacity: 0;
    transform: scaleX(0);
    transform-origin: center;
    transition: opacity 500ms cubic-bezier(0.4, 0, 0.2, 1),
                transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Variance brackets */
.variance-bracket line {
    stroke: var(--c-tech-blue);
    stroke-width: 1.5;
}
.variance-bracket text {
    font-family: 'Roboto Mono', monospace;
    font-size: 10px;
    fill: var(--c-tech-blue);
}
.variance-bracket {
    opacity: 0;
    transition: opacity 400ms cubic-bezier(0.4, 0, 0.2, 1) 0ms;
}

/* ── Checked State ───────────────────────────── */

/* Hide passive loop */
.villari-toggle-input:checked ~ .villari-graph .passive-loop path {
    opacity: 0;
    transform: scaleX(0);
}

/* Show active line */
.villari-toggle-input:checked ~ .villari-graph .active-line > line {
    opacity: 1;
    transform: scaleX(1);
}

/* Show variance brackets with delay */
.villari-toggle-input:checked ~ .villari-graph .variance-bracket {
    opacity: 1;
    transition-delay: 200ms;
}

/* ── Labels & Badges ─────────────────────────── */

.villari-labels {
    margin-top: 20px;
}

.villari-label-text {
    display: block;
    font-family: 'Inter Tight', sans-serif;
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.villari-badge {
    display: inline-block;
    font-family: 'Roboto Mono', monospace;
    font-weight: 700;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 4px 10px;
    border-radius: 3px;
    margin-bottom: 10px;
}
.villari-badge--passive {
    background: #C8922A;
    color: #0D0D0D;
}
.villari-badge--active {
    background: var(--c-tech-blue);
    color: #0D0D0D;
}

.villari-subtext {
    font-family: 'Inter Tight', sans-serif;
    font-size: 13px;
    line-height: 1.6;
    opacity: 0.6;
    max-width: 360px;
}

/* Default: show passive, hide active */
.villari-label-passive,
.villari-label-active {
    transition: opacity 500ms cubic-bezier(0.4, 0, 0.2, 1);
}
.villari-label-active {
    opacity: 0;
    height: 0;
    overflow: hidden;
}

/* Checked: show active, hide passive */
.villari-toggle-input:checked ~ .villari-labels .villari-label-passive {
    opacity: 0;
    height: 0;
    overflow: hidden;
}
.villari-toggle-input:checked ~ .villari-labels .villari-label-active {
    opacity: 1;
    height: auto;
}

/* ── Toggle Switch ───────────────────────────── */

.villari-toggle-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    margin-top: 20px;
    padding: 10px 0;
    min-height: 44px;
    user-select: none;
}

.villari-toggle-track {
    width: 40px;
    height: 20px;
    background: var(--track-bg);
    border-radius: 10px;
    position: relative;
    transition: background 300ms;
    flex-shrink: 0;
}

.villari-toggle-thumb {
    width: 16px;
    height: 16px;
    background: var(--thumb-bg);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1),
                background 300ms;
    box-shadow: 0 1px 3px rgb(from var(--c-true-black) r g b / 30%);
}

/* Checked: slide thumb + blue track */
.villari-toggle-input:checked ~ .villari-toggle-label .villari-toggle-thumb {
    transform: translateX(20px);
}
.villari-toggle-input:checked ~ .villari-toggle-label .villari-toggle-track {
    background: var(--c-tech-blue);
}

/* Text labels */
.villari-toggle-text {
    font-family: 'Roboto Mono', monospace;
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-primary);
}
.villari-toggle-subtitle {
    font-family: 'Inter Tight', sans-serif;
    font-size: 11px;
    opacity: 0.5;
}

/* Focus ring */
.villari-toggle-input:focus-visible ~ .villari-toggle-label .villari-toggle-track {
    outline: 2px solid var(--c-tech-blue);
    outline-offset: 2px;
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 968px) {
    .villari-graph {
        max-height: none;
    }
    .villari-subtext {
        max-width: 100%;
    }
}

/* ── Reduced Motion ──────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    .passive-loop path,
    .active-line > line,
    .variance-bracket,
    .villari-label-passive,
    .villari-label-active,
    .villari-toggle-thumb,
    .villari-toggle-track {
        transition: none;
    }
}