/* ========================================
   Animated Character-Grid Hero
   ======================================== */

/* Full-bleed canvas hero. Overrides the two-column .hero layout, so this
   file must be linked after style.css. */
.hero-matrix {
    position: relative;
    min-height: 100vh;
    padding: 0;
    overflow: hidden;
    background: var(--bg-primary);
    display: block;
}

.hero-matrix-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

/* The real copy stays in the DOM for screen readers and search engines --
   the canvas above is a decorative rendering of the same text. */
.hero-matrix-content {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

/* Surface the panel when a keyboard user tabs into one of its links, so focus
   is never invisible. */
.hero-matrix-content:focus-within {
    position: absolute;
    inset: auto 20px 40px 20px;
    width: auto;
    height: auto;
    max-width: 720px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    clip: auto;
    clip-path: none;
    white-space: normal;
    overflow: visible;
    z-index: 2;
    background: rgba(var(--bg-primary-rgb), 0.94);
    border: 1px solid var(--border-light);
    border-radius: 8px;
}

.hero-matrix-content:focus-within h1 {
    font-size: 1.5rem;
    margin: 0 0 0.75rem;
    color: var(--text-primary);
}

.hero-matrix-content:focus-within p {
    margin: 0 0 0.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.hero-matrix-content:focus-within a {
    color: var(--primary-color);
}

@media (max-width: 640px) {
    .hero-matrix {
        min-height: 100svh;
    }
}