/* Topic pages (/automotive, /product-visualization): plain sections for the
   problem, the steps, what teams make, proof, security and who it's for. */

.topic-page { padding-top: clamp(7rem, 14vw, 9rem); }

.topic-hero {
    display: grid;
    gap: clamp(2rem, 5vw, 3.5rem);
    align-items: center;
    grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 1024px) {
    .topic-hero { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); }
}
.topic-hero h1 {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    letter-spacing: -0.03em;
    line-height: 1.06;
    margin-bottom: 1.5rem;
}
.topic-lead {
    max-width: 38rem;
    font-size: 1.1875rem;
    line-height: 1.7;
    color: rgba(229, 231, 235, 0.92);
}
.topic-hero .hero-actions { margin-top: 2rem; gap: 0.75rem; }
.topic-proof {
    margin-top: 1.5rem;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(156, 163, 175, 0.95);
}
.topic-hero__media { margin: 0; }
.topic-hero__media img,
.topic-pair img,
.topic-uses img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 2px;
    background: #0a1820;
}

.topic-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    margin: 0;
    padding: 0;
    list-style: none;
}
.topic-grid li {
    padding-top: 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    line-height: 1.65;
    color: rgba(209, 213, 219, 0.9);
}
.topic-grid h3,
.topic-steps h3,
.topic-uses h3,
.topic-cases h3,
.topic-who h3 { margin-bottom: 0.4rem; font-size: 1.0625rem; font-weight: 700; color: #fff; }

.topic-how {
    display: grid;
    gap: clamp(2rem, 5vw, 3rem);
    align-items: start;
    grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 1024px) {
    .topic-how { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}
.topic-steps { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.topic-steps li {
    position: relative;
    padding: 1.1rem 0 1.1rem 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    line-height: 1.65;
    color: rgba(209, 213, 219, 0.9);
    counter-increment: step;
}
.topic-steps li::before {
    content: counter(step, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 1.15rem;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 12px;
    color: #05c7bb;
}
.topic-pair { display: grid; gap: 1rem; grid-template-columns: 1.4fr 1fr; align-items: end; }
.topic-pair figure { margin: 0; }
.topic-pair figcaption,
.topic-uses figcaption {
    margin-top: 0.5rem;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(156, 163, 175, 0.95);
}

.topic-uses {
    display: grid;
    gap: 2rem 1.5rem;
    grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
    margin: 0;
    padding: 0;
    list-style: none;
}
.topic-uses li { line-height: 1.6; color: rgba(209, 213, 219, 0.9); }
.topic-uses img { aspect-ratio: 16 / 9; object-fit: cover; margin-bottom: 1rem; }

.topic-cases {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
    margin: 0 0 1.5rem;
    padding: 0;
    list-style: none;
}
.topic-cases li {
    padding: 1.4rem 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    line-height: 1.6;
    color: rgba(209, 213, 219, 0.9);
}
.topic-link,
.topic-who a {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(5, 199, 187, 0.6);
}

.topic-checks {
    display: grid;
    gap: 0.25rem 2rem;
    grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
    margin: 0;
    padding: 0;
    list-style: none;
}
.topic-checks li {
    position: relative;
    padding: 0.85rem 0 0.85rem 1.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    line-height: 1.6;
    color: rgba(229, 231, 235, 0.92);
}
.topic-checks li::before {
    content: '';
    position: absolute;
    left: 0.2rem;
    top: 1.3rem;
    width: 0.6rem;
    height: 0.35rem;
    border-left: 2px solid #05c7bb;
    border-bottom: 2px solid #05c7bb;
    transform: rotate(-45deg);
}

.topic-who {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
}
.topic-who > div {
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    line-height: 1.65;
    color: rgba(209, 213, 219, 0.9);
}
.topic-who p { margin-bottom: 0.9rem; }

.topic-cta .section-lead { margin: 0.5rem 0 1.75rem; }

/* Steps laid out across the width when no picture sits beside them. */
.topic-steps--grid {
    display: grid;
    gap: 0 2rem;
    grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

/* A tall hero picture (a portrait-format frame) stays a sensible height. */
.topic-hero__media--portrait img { max-height: 34rem; width: auto; max-width: 100%; margin: 0 auto; }
.topic-hero__media figcaption,
.topic-figure figcaption {
    margin-top: 0.5rem;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(156, 163, 175, 0.95);
    text-align: center;
}
.topic-figure { margin: 0; }
.topic-figure img { display: block; width: 100%; height: auto; border-radius: 2px; background: #0a1820; }

/* A strip of frames from one production: the same cast, shot after shot. */
.topic-frames {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 0 0 1.5rem;
    padding: 0;
    list-style: none;
}
@media (min-width: 768px) {
    .topic-frames { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.topic-frames img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 2px; }
.topic-more { margin-top: 1.5rem; }