/* OuSoCo — Outer Solar System Company
   Single-page site styles */

:root {
  --bg: #06070d;
  --bg-alt: #0a0c16;
  --bg-card: #10121e;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #eef0f7;
  --text-dim: #a6acc2;
  --text-faint: #6c7188;
  --accent-blue: #4c8dff;
  --accent-purple: #b06cff;
  --gradient: linear-gradient(90deg, #38bdf8 0%, #4c6ef5 45%, #b06cff 100%);
  --max-width: 1180px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 7rem;
  --radius: 4px;
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: 1.75rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--gradient);
  display: inline-block;
}

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.15rem);
  margin-bottom: var(--space-3);
}

p {
  color: var(--text-dim);
  margin: 0 0 var(--space-2);
}

section {
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--border);
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-4);
}

/* ---------- Nav ---------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.75rem;
  background: rgba(6, 7, 13, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.nav.is-scrolled {
  background: rgba(6, 7, 13, 0.86);
  border-bottom-color: var(--border);
}

.nav__logo img {
  height: 26px;
  width: auto;
}

.nav__links {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.87rem;
  color: var(--text-dim);
}

.nav__links a {
  text-decoration: none;
  color: inherit;
  transition: color 0.15s ease;
}

.nav__links a:hover {
  color: var(--text);
}

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text);
  width: 38px;
  height: 34px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  display: block;
  width: 16px;
  height: 1px;
  background: var(--text);
  position: relative;
  transition: transform 0.2s ease;
}

.nav__toggle span::before {
  position: absolute;
  top: -5px;
}

.nav__toggle span::after {
  position: absolute;
  top: 5px;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding-top: 6rem;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url("../img/hero-cern.jpg");
  background-size: cover;
  background-position: 38% 42%;
  filter: saturate(0.85) brightness(0.62);
  transform: scale(1.02);
}

.hero__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6,7,13,0.55) 0%, rgba(6,7,13,0.25) 30%, rgba(6,7,13,0.55) 68%, var(--bg) 100%),
    linear-gradient(90deg, rgba(6,7,13,0.75) 0%, rgba(6,7,13,0.15) 55%);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero__content h1 {
  font-size: clamp(2.3rem, 5.6vw, 4rem);
  line-height: 1.08;
  margin-bottom: var(--space-3);
}

.hero__content p {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--text-dim);
  max-width: 46ch;
  margin-bottom: var(--space-3);
}

.hero__meta {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-strong);
  font-size: 0.8rem;
  color: var(--text-faint);
  flex-wrap: wrap;
}

.hero__meta strong {
  display: block;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border-strong);
  color: var(--text);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.btn:hover {
  border-color: var(--accent-blue);
  background: rgba(76, 141, 255, 0.08);
}

.btn--primary {
  background: var(--gradient);
  border: none;
  color: #06070d;
}

.btn--primary:hover {
  filter: brightness(1.08);
  background: var(--gradient);
}

/* ---------- About ---------- */

.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.about__lede {
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: var(--text);
  font-weight: 400;
  max-width: 62ch;
}

/* ---------- CERN section ---------- */

.cern__callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 2px solid transparent;
  border-image: var(--gradient) 1;
  border-radius: var(--radius);
  padding: 1.6rem 1.8rem;
  margin-bottom: var(--space-4);
}

.cern__callout p {
  color: var(--text);
  font-size: 1.02rem;
  margin: 0;
}

.cern__callout p + p {
  margin-top: 0.8rem;
  color: var(--text-dim);
  font-size: 0.92rem;
}

.cern__callout a {
  color: #9cc4ff;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Slider */

.slider {
  position: relative;
}

.slider__track {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: var(--space-2);
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.slider__track::-webkit-scrollbar {
  height: 6px;
}

.slider__track::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}

.slide {
  position: relative;
  flex: 0 0 auto;
  width: min(78vw, 460px);
  aspect-ratio: 4 / 3;
  scroll-snap-align: start;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.8rem 1rem;
  font-size: 0.78rem;
  color: var(--text);
  background: linear-gradient(0deg, rgba(0,0,0,0.78), transparent);
}

.slider__controls {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: var(--space-2);
}

.slider__btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.slider__btn:hover {
  border-color: var(--accent-blue);
  background: rgba(76, 141, 255, 0.08);
}

/* ---------- Press ---------- */

.press-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.press-card {
  background: var(--bg-card);
  padding: 1.5rem 1.6rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 150px;
  transition: background 0.15s ease;
}

.press-card:hover {
  background: #151827;
}

.press-card__source {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 600;
}

.press-card__title {
  font-size: 0.97rem;
  color: var(--text);
  line-height: 1.45;
  flex-grow: 1;
}

.press-card__arrow {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ---------- Contact ---------- */

.contact {
  border-bottom: none;
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.person-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--bg-card);
}

.person-card__name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.person-card__role {
  font-size: 0.85rem;
  color: var(--text-faint);
  margin-bottom: 1rem;
}

.person-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.85rem;
  text-decoration: none;
  color: #9cc4ff;
  border-bottom: 1px solid rgba(156, 196, 255, 0.35);
  padding-bottom: 2px;
}

.contact__mail {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.contact__mail p {
  margin-bottom: var(--space-2);
}

.contact__mail-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

/* ---------- Footer ---------- */

footer {
  padding: var(--space-4) 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__inner img {
  height: 20px;
  opacity: 0.75;
}

.footer__meta {
  font-size: 0.78rem;
  color: var(--text-faint);
}

.footer__legal {
  font-size: 0.78rem;
  color: var(--text-faint);
  text-decoration: none;
}

.footer__legal:hover {
  color: var(--text);
}

/* ---------- Responsive ---------- */

@media (max-width: 760px) {
  .nav__links {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    height: calc(100svh - 56px);
    background: var(--bg);
    flex-direction: column;
    padding: var(--space-3) 1.75rem;
    gap: var(--space-2);
    font-size: 1rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
  }

  .nav__links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav__toggle {
    display: flex;
  }

  .hero {
    align-items: flex-end;
    padding-top: 5rem;
  }

  .hero__meta {
    gap: var(--space-3);
  }

  section {
    padding-block: var(--space-5);
  }
}