/* Use-case landing pages (fire & smoke, and future siblings). Loads after
   style.css and reuses its design tokens — dark theme throughout, no
   dependency on main.js. */

.uc-hero { position: relative; padding: 150px 0 72px; text-align: center; overflow: hidden; }
.uc-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 55% at 50% 0%, rgba(47, 224, 200, 0.10), transparent 70%);
}
.uc-hero .container, .uc-section .container { position: relative; max-width: 1040px; }
.uc-hero h1 {
  font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.1; margin: 18px auto 18px; max-width: 800px;
}
.uc-hero h1 span { color: var(--accent-bright); }
.uc-lede { max-width: 640px; margin: 0 auto; color: var(--text-secondary); font-size: 1.05rem; line-height: 1.65; }
.uc-cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.uc-trust { display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; margin-top: 30px; list-style: none; padding: 0; font-size: 0.8rem; color: var(--text-secondary); }
.uc-trust li::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); margin-right: 8px; vertical-align: 1px; }

.uc-section { padding: 76px 0; border-top: 1px solid var(--border-subtle); }
.uc-section .eyebrow { display: flex; width: fit-content; margin: 0 auto; }
.uc-section h2 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; font-size: clamp(1.5rem, 3.4vw, 2.1rem); text-align: center; margin: 14px 0 12px; }
.uc-sub { max-width: 620px; margin: 0 auto 40px; text-align: center; color: var(--text-secondary); line-height: 1.65; }

/* clips */
.uc-clips { display: flex; gap: 28px; justify-content: center; align-items: flex-start; flex-wrap: wrap; }
.uc-clip { flex: 0 1 auto; text-align: center; }
.uc-frame {
  position: relative; display: inline-block; border-radius: 18px; overflow: hidden;
  border: 1px solid var(--border-strong); background: var(--surface);
  box-shadow: 0 40px 80px -34px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(47, 224, 200, 0.08);
}
.uc-frame video { display: block; height: 420px; width: auto; max-width: 100%; }
.uc-frame.is-landscape video { height: auto; width: min(560px, 82vw); }
.uc-tag {
  position: absolute; top: 12px; left: 12px; z-index: 2; font-family: var(--font-display);
  font-size: 0.62rem; font-weight: 700; letter-spacing: 0.08em; padding: 5px 11px; border-radius: 999px;
  background: rgba(5, 7, 10, 0.88); border: 1px solid rgba(47, 224, 200, 0.4); color: var(--accent-bright);
}
.uc-tag.is-sim { border-color: rgba(245, 185, 66, 0.45); color: var(--accent-amber); }
.uc-caption { max-width: 340px; margin: 14px auto 0; font-size: 0.86rem; line-height: 1.55; color: var(--text-secondary); }
.uc-clip.is-wide .uc-caption { max-width: 520px; }

/* steps + cards */
.uc-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.uc-card { padding: 24px 22px; border-radius: 16px; background: var(--surface-raised); border: 1px solid var(--border-subtle); }
.uc-card .uc-num { font-family: var(--font-mono, monospace); font-size: 0.7rem; color: var(--accent-bright); letter-spacing: 0.06em; }
.uc-card h3 { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; margin: 8px 0 8px; }
.uc-card p { font-size: 0.88rem; line-height: 1.6; color: var(--text-secondary); }
.uc-pill { display: inline-block; margin-left: 8px; padding: 1px 7px; border-radius: 999px; font-size: 0.58rem; font-weight: 700; letter-spacing: 0.06em; vertical-align: 2px; color: var(--accent-amber); border: 1px solid rgba(245, 185, 66, 0.4); }

.uc-list { list-style: none; padding: 0; margin: 0 auto; max-width: 620px; display: grid; gap: 12px; }
.uc-list li { padding: 14px 18px; border-radius: 12px; background: var(--surface-raised); border: 1px solid var(--border-subtle); font-size: 0.92rem; color: var(--text-secondary); line-height: 1.55; }
.uc-list b { color: var(--text-primary); font-weight: 600; }

.uc-honest { max-width: 760px; margin: 0 auto; padding: 26px 28px; border-radius: 16px; border: 1px solid rgba(245, 185, 66, 0.3); background: rgba(245, 185, 66, 0.05); }
.uc-honest h3 { font-family: var(--font-display); font-size: 1rem; margin-bottom: 10px; color: var(--accent-amber); }
.uc-honest li { padding-left: 2px; }
.uc-honest ul { margin: 0; padding-left: 20px; list-style: disc; color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }

/* faq */
.uc-faq { max-width: 760px; margin: 0 auto; }
.uc-faq details { border-bottom: 1px solid var(--border-subtle); }
.uc-faq summary { cursor: pointer; list-style: none; padding: 20px 4px; font-family: var(--font-display); font-weight: 600; font-size: 1rem; display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.uc-faq summary::-webkit-details-marker { display: none; }
.uc-faq summary::after { content: "+"; font-size: 1.3rem; color: var(--accent-bright); transition: transform 0.3s var(--ease); flex-shrink: 0; }
.uc-faq details[open] summary::after { transform: rotate(45deg); }
.uc-faq details p { padding: 0 4px 22px; color: var(--text-secondary); font-size: 0.92rem; line-height: 1.7; max-width: 660px; }

.uc-final { text-align: center; padding: 84px 0 96px; border-top: 1px solid var(--border-subtle); position: relative; }
.uc-final::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse 50% 70% at 50% 100%, rgba(47, 224, 200, 0.09), transparent 70%); }
.uc-final .container { position: relative; }
.uc-final h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.6rem, 3.6vw, 2.3rem); margin-bottom: 12px; }
.uc-crumb { font-size: 0.78rem; color: var(--text-tertiary); margin-bottom: 6px; }
.uc-crumb a { color: var(--text-secondary); text-decoration: none; }
.uc-crumb a:hover { color: var(--accent-bright); }


/* cross-links between use-case pages */
.uc-more { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.uc-more-link { display: flex; flex-direction: column; gap: 6px; min-width: 240px; padding: 20px 24px; border-radius: 14px; text-decoration: none; background: var(--surface-raised); border: 1px solid var(--border-subtle); transition: border-color 0.25s var(--ease), transform 0.25s var(--ease); }
.uc-more-link:hover { border-color: rgba(47, 224, 200, 0.4); transform: translateY(-2px); }
.uc-more-link span { font-family: var(--font-display); font-weight: 600; font-size: 1rem; color: var(--text-primary); }
.uc-more-link em { font-style: normal; font-size: 0.8rem; color: var(--accent-bright); }

@media (max-width: 640px) {
  .nav-actions .btn-ghost { display: none; }
  .uc-hero { padding: 120px 0 56px; }
  .uc-section { padding: 56px 0; }
  .uc-frame video { height: 360px; }
}