/* Old iPhone Cam / Old Phone Cam — public site (OC-25)
   Pure CSS. No trackers, cookies, or external resources. */

:root {
  color-scheme: light dark;

  --bg: #f2f0ec;
  --bg-elevated: #ffffff;
  --fg: #121212;
  --muted: #5a5a5a;
  --hairline: rgba(18, 18, 18, 0.18);
  --accent: #e30d12;
  --accent-fg: #ffffff;
  --focus: #0b57d0;
  --hero-grid: rgba(18, 18, 18, 0.06);
  --shadow: 0 1px 0 rgba(18, 18, 18, 0.06);

  --font-sans: "Helvetica Neue", Helvetica, "Nimbus Sans", "Liberation Sans",
    "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Menlo", "Consolas", monospace;

  --space: 0.5rem;
  --measure: 40rem;
  --max: 72rem;
  --radius: 0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --bg-elevated: #141414;
    --fg: #f5f5f5;
    --muted: rgba(245, 245, 245, 0.62);
    --hairline: rgba(245, 245, 245, 0.22);
    --hero-grid: rgba(245, 245, 245, 0.07);
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.4);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--fg);
  background-color: var(--bg);
  background-image:
    linear-gradient(180deg, transparent 0%, transparent 70%, var(--bg) 100%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent calc(var(--space) * 7.9),
      var(--hero-grid) calc(var(--space) * 8),
      var(--hero-grid) calc(var(--space) * 8.05)
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent calc(var(--space) * 7.9),
      var(--hero-grid) calc(var(--space) * 8),
      var(--hero-grid) calc(var(--space) * 8.05)
    );
  background-attachment: fixed;
}

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

a {
  color: var(--fg);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible,
.skip-link:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: var(--space);
  top: -100px;
  z-index: 100;
  padding: calc(var(--space) * 1.5) calc(var(--space) * 2);
  background: var(--fg);
  color: var(--bg);
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space);
}

.wrap {
  width: min(100% - calc(var(--space) * 4), var(--max));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--hairline);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--space) * 2);
  padding-block: calc(var(--space) * 2);
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  color: var(--fg);
  min-height: 44px;
  justify-content: center;
}

.brand:hover {
  color: var(--fg);
}

.brand__name {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand__name span {
  color: var(--accent);
}

.brand__tag {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 0.5) calc(var(--space) * 2);
  align-items: center;
}

.nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav a[aria-current="page"] {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.lang {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 0.5);
  margin: 0;
  padding: 0;
  list-style: none;
}

.lang a {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: 0.55rem;
  border: 1px solid var(--hairline);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.lang a[aria-current="true"] {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

.hero {
  padding-block: calc(var(--space) * 8) calc(var(--space) * 6);
  border-bottom: 1px solid var(--hairline);
}

.hero__brand {
  margin: 0 0 calc(var(--space) * 3);
  font-size: clamp(2.4rem, 7vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  font-weight: 700;
  max-width: 12ch;
}

.hero__brand span {
  color: var(--accent);
}

.hero__lead {
  margin: 0 0 calc(var(--space) * 4);
  max-width: 28rem;
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
  color: var(--muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 2);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.85rem 1.35rem;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.button:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}

.button--ghost {
  background: transparent;
  color: var(--fg);
}

.button--ghost:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

.section {
  padding-block: calc(var(--space) * 7);
  border-bottom: 1px solid var(--hairline);
}

.section__title {
  margin: 0 0 calc(var(--space) * 2);
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 22ch;
}

.section__title span {
  color: var(--accent);
}

.section__lede {
  margin: 0 0 calc(var(--space) * 4);
  max-width: var(--measure);
  color: var(--muted);
}

.model-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  list-style: none;
  margin: 0;
  padding: 0;
}

.model-list li {
  background: var(--bg-elevated);
  padding: calc(var(--space) * 2.5);
  min-height: 7.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.model-list strong {
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.model-list span {
  color: var(--muted);
  font-size: 0.9rem;
}

.badge {
  display: inline-block;
  margin-top: auto;
  padding-top: calc(var(--space) * 1.5);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
}

.badge--free {
  color: var(--accent);
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: calc(var(--space) * 3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.facts li {
  border-top: 2px solid var(--fg);
  padding-top: calc(var(--space) * 2);
}

.facts dt,
.facts .label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.facts dd,
.facts .value {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.prose {
  max-width: var(--measure);
}

.prose h1 {
  margin: 0 0 calc(var(--space) * 3);
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.prose h2 {
  margin: calc(var(--space) * 5) 0 calc(var(--space) * 2);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.prose h3 {
  margin: calc(var(--space) * 4) 0 calc(var(--space) * 1.5);
  font-size: 1.1rem;
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 calc(var(--space) * 2.5);
  color: var(--fg);
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose li + li {
  margin-top: 0.55rem;
}

.prose .meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.faq details {
  border-top: 1px solid var(--hairline);
  padding-block: calc(var(--space) * 2);
}

.faq details:last-child {
  border-bottom: 1px solid var(--hairline);
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  min-height: 44px;
  display: flex;
  align-items: center;
  list-style-position: outside;
}

.faq summary:hover {
  color: var(--accent);
}

.faq details[open] summary {
  margin-bottom: calc(var(--space) * 1.5);
}

.faq details p {
  margin: 0;
  color: var(--muted);
}

.contact-box {
  margin-top: calc(var(--space) * 4);
  padding: calc(var(--space) * 3);
  border: 1px solid var(--hairline);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}

.contact-box a {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  word-break: break-all;
}

.page {
  padding-block: calc(var(--space) * 6) calc(var(--space) * 8);
}

.site-footer {
  padding-block: calc(var(--space) * 4);
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 2);
  justify-content: space-between;
  align-items: baseline;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 2);
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-footer a:hover {
  color: var(--accent);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 40rem) {
  .wrap {
    width: min(100% - calc(var(--space) * 3), var(--max));
  }

  .hero {
    padding-block: calc(var(--space) * 6) calc(var(--space) * 4);
  }

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

  .nav {
    width: 100%;
  }
}