/* Landing page styles — ai.rur1.com (light). */

/* ---------- hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(620px 340px at 18% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%),
    radial-gradient(520px 300px at 85% 8%, color-mix(in srgb, var(--accent) 6%, transparent), transparent 70%);
}
.hero .inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
  padding: 4.5rem 0 4rem;
}
@media (max-width: 900px) {
  .hero .inner {
    grid-template-columns: 1fr;
    padding: 3rem 0;
  }
}
.hero h1 {
  margin: 1.1rem 0 0.4rem;
  font-size: clamp(2.1rem, 4.5vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.hero .latin-name {
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  letter-spacing: 0.04em;
}
.hero .lede {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.0625rem;
}
.hero .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}
.hero .fine {
  margin-top: 1rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

.hero-photo {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.hero-photo img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  max-height: 440px;
  object-fit: cover;
}
.hero-photo figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.5rem 1.25rem 0.875rem;
  font-size: 0.8125rem;
  color: #ffffff;
  background: linear-gradient(to top, rgba(8, 10, 15, 0.65), transparent);
}

/* ---------- spec strip ---------- */
.spec-strip {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.spec-strip .inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
}
@media (max-width: 760px) {
  .spec-strip .inner {
    grid-template-columns: repeat(2, 1fr);
  }
}
.spec-strip .cell {
  padding: 1.25rem 1rem;
  text-align: center;
}
.spec-strip .value {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.spec-strip .label {
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: var(--muted);
}

/* ---------- sections ---------- */
.section {
  padding: 4.5rem 0 0;
}
.section > .container > h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.01em;
  margin: 0.5rem 0 0.75rem;
}
.section .section-lede {
  color: var(--muted);
  max-width: 44rem;
  margin: 0;
}

/* capability cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}
@media (max-width: 900px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--elevated);
  padding: 1.375rem 1.25rem;
  transition: border-color 200ms var(--ease-site), box-shadow 200ms var(--ease-site);
}
.card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: var(--shadow);
}
.card h3 {
  margin: 0 0 0.375rem;
  font-size: 1.0625rem;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
}

/* ---------- name origin (photos) ---------- */
.origin {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  margin-top: 2rem;
}
@media (max-width: 860px) {
  .origin {
    grid-template-columns: 1fr;
  }
}
.origin .prose p {
  color: var(--muted);
  margin: 0 0 1rem;
}
.origin .prose strong {
  color: var(--fg);
}
.origin-photos {
  display: grid;
  gap: 1rem;
}
.origin-photos figure {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.origin-photos img {
  width: 100%;
  max-height: 260px;
  object-fit: cover;
}
.origin-photos figcaption {
  padding: 0.625rem 0.875rem;
  font-size: 0.8125rem;
  color: var(--muted);
  background: var(--surface);
}
.note {
  margin-top: 1.25rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-button) var(--radius-button) 0;
  background: var(--surface);
  padding: 0.875rem 1.125rem;
  font-size: 0.875rem;
  color: var(--muted);
}

/* ---------- security principles ---------- */
.principle-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}
@media (max-width: 760px) {
  .principle-list {
    grid-template-columns: 1fr;
  }
}
.principle {
  display: flex;
  gap: 0.875rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.125rem 1.25rem;
  background: var(--elevated);
}
.principle .dot {
  flex: none;
  margin-top: 0.45rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--success);
}
.principle h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}
.principle p {
  margin: 0;
  font-size: 0.9075rem;
  color: var(--muted);
}

/* ---------- spec table ---------- */
.spec-table {
  width: 100%;
  margin-top: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  font-size: 0.9375rem;
}
.spec-table th,
.spec-table td {
  text-align: left;
  padding: 0.75rem 1.125rem;
  border-bottom: 1px solid var(--border);
}
.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: none;
}
.spec-table th {
  width: 32%;
  color: var(--muted);
  font-weight: 500;
  background: var(--surface);
}
.spec-table code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.4em;
}

/* ---------- limitations ---------- */
.limits {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.625rem;
  max-width: 46rem;
}
.limits li {
  position: relative;
  padding-left: 1.375rem;
  color: var(--muted);
  font-size: 0.9375rem;
}
.limits li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent-ink);
}

/* ---------- bottom CTA ---------- */
.bottom-cta {
  margin-top: 5rem;
  border-top: 1px solid var(--border);
  background: linear-gradient(to bottom, var(--surface), var(--bg));
}
.bottom-cta .inner {
  padding: 4rem 0;
  text-align: center;
}
.bottom-cta h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 0.75rem;
}
.bottom-cta p {
  color: var(--muted);
  margin: 0 auto 2rem;
  max-width: 36rem;
}