/* Pinfold website. One stylesheet, no frameworks, no external resources.
   Brand colors come from icons/icon.svg: indigo #4F46E5 -> violet #7C3AED, cyan accent #06B6D4.
   The site is light by default, whatever the OS setting. site/theme.js sets data-theme="dark" on
   <html> when the visitor picks the dark theme with the header button. */

:root {
  color-scheme: light;

  --brand: #4f46e5;
  --brand-2: #7c3aed;
  --cyan: #06b6d4;
  --gradient: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);

  --bg: #f7f7fc;
  --bg-tint: #efeefb;
  --surface: #ffffff;
  --surface-2: #f3f2fb;
  --text: #17152e;
  --text-muted: #4a4865;
  --border: #e2e0f0;
  --border-strong: #cbc8e3;
  --link: #4338ca;
  --link-hover: #6d28d9;
  --kicker: #4f46e5;
  --cyan-text: #0e7490;
  --check-bg: #e0f7fb;
  --check: #0e7490;
  --focus: #4f46e5;
  --shadow: 0 1px 2px rgba(23, 21, 46, 0.06), 0 12px 32px -12px rgba(49, 46, 129, 0.22);
  --shadow-lg: 0 2px 4px rgba(23, 21, 46, 0.05), 0 32px 64px -24px rgba(49, 46, 129, 0.35);
  --fold-1: rgba(165, 180, 252, 0.75);
  --fold-2: rgba(196, 181, 253, 0.55);
  --glow-1: rgba(79, 70, 229, 0.14);
  --glow-2: rgba(6, 182, 212, 0.12);
  --code-bg: #17152e;
  --code-text: #e8e7f7;

  --radius: 16px;
  --radius-sm: 10px;
  --container: 1200px;
  --gutter: clamp(16px, 4vw, 32px);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e0d1c;
  --bg-tint: #15142a;
  --surface: #18172e;
  --surface-2: #201f3a;
  --text: #edecfb;
  --text-muted: #b1afcc;
  --border: #2c2a4a;
  --border-strong: #3d3a63;
  --link: #a5b4fc;
  --link-hover: #c4b5fd;
  --kicker: #a5b4fc;
  --cyan-text: #67e8f9;
  --check-bg: rgba(6, 182, 212, 0.16);
  --check: #67e8f9;
  --focus: #a5b4fc;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px -12px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.35), 0 32px 64px -24px rgba(0, 0, 0, 0.75);
  --fold-1: rgba(99, 102, 241, 0.45);
  --fold-2: rgba(139, 92, 246, 0.3);
  --glow-1: rgba(99, 102, 241, 0.22);
  --glow-2: rgba(6, 182, 212, 0.12);
  --code-bg: #0a0916;
  --code-text: #e8e7f7;
}

/* Screenshots come in a light and a dark version; show the one matching the theme.
   display: none also keeps a lazy-loaded image from downloading until its theme is chosen. */
:root:not([data-theme="dark"]) .only-dark,
:root[data-theme="dark"] .only-light {
  display: none;
}

/* ---------- Base ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-wrap: break-word;
}

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

img {
  height: auto;
}

h1,
h2,
h3 {
  line-height: 1.15;
  text-wrap: balance;
  letter-spacing: -0.02em;
  margin: 0;
}

p {
  margin: 0;
}

a {
  color: var(--link);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

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

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

kbd {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8em;
  line-height: 1.3;
  padding: 0.05em 0.4em;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--text);
  white-space: nowrap;
}

.keys {
  white-space: nowrap;
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
}

.container {
  width: 100%;
  max-width: calc(var(--container) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 10;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

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

.brand-logo {
  width: 32px;
  height: 32px;
}

.brand-small {
  font-size: 1.0625rem;
}

.brand-small .brand-logo {
  width: 24px;
  height: 24px;
}

.site-nav ul,
.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: block;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.975rem;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--text);
  background: var(--surface-2);
}

.site-nav li {
  display: flex;
  align-items: center;
}

.site-nav li[hidden] {
  display: none;
}

/* Sun/moon theme switch. Hidden (via the hidden attribute) until site/theme.js runs. */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-left: 4px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-muted);
  font: inherit;
  cursor: pointer;
}

.theme-toggle:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

/* Show the moon in the light theme (switch to dark) and the sun in the dark theme. */
:root[data-theme="dark"] .theme-toggle .icon-moon,
:root:not([data-theme="dark"]) .theme-toggle .icon-sun {
  display: none;
}

@media (max-width: 420px) {
  .brand {
    font-size: 1.125rem;
    gap: 8px;
  }

  .brand-logo {
    width: 28px;
    height: 28px;
  }

  .header-inner {
    gap: 8px;
  }

  .site-nav ul {
    gap: 0;
  }

  .site-nav a {
    padding: 8px 6px;
    font-size: 0.9375rem;
  }

  .theme-toggle {
    width: 36px;
    height: 36px;
    margin-left: 2px;
  }
}

/* Very narrow phones: keep brand, links and theme button on one row. */
@media (max-width: 370px) {
  .brand-name {
    font-size: 1rem;
  }

  .site-nav a {
    padding: 8px 5px;
    font-size: 0.875rem;
  }
}

/* 340px and below: the logo alone stands for the brand; the name stays for screen readers. */
@media (max-width: 340px) {
  .site-header .brand-name {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.2;
  text-decoration: none;
  text-align: center;
}

.btn-icon {
  flex: none;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 20px -8px rgba(79, 70, 229, 0.65);
}

.btn-primary:hover {
  color: #fff;
  background: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  color: var(--text);
  border-color: var(--brand);
}

.btn-store {
  min-height: 40px;
  padding: 8px 14px;
  font-size: 0.9375rem;
  font-weight: 500;
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-store.is-soon {
  color: var(--text-muted);
  border-style: dashed;
  cursor: default;
}

.soon {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-muted);
}

@media (prefers-reduced-motion: no-preference) {
  .btn,
  .site-nav a,
  .theme-toggle,
  .oss-links a,
  .shot-frame {
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  .btn-primary:hover,
  .btn-secondary:hover {
    transform: translateY(-1px);
  }
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(48px, 8vw, 96px) clamp(56px, 8vw, 104px);
  background:
    radial-gradient(ellipse 60% 50% at 85% 10%, var(--glow-1), transparent 70%),
    radial-gradient(ellipse 45% 40% at 0% 55%, var(--glow-2), transparent 70%);
}

.hero-copy {
  max-width: 44rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

.hero h1 {
  font-size: clamp(2.25rem, 1.4rem + 4vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
  max-width: 18ch;
}

.lead {
  margin-top: 20px;
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  color: var(--text-muted);
  max-width: 38rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.store-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.fine-print {
  margin-top: 18px;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

@media (max-width: 480px) {
  .cta-row .btn {
    flex: 1 1 100%;
  }
}

.hero-shot {
  position: relative;
  isolation: isolate;
  margin: clamp(56px, 7vw, 80px) 0 0;
}

/* Two offset "tab cards" peek out behind the screenshot, like the folded cards in the logo. */
.hero-shot::before,
.hero-shot::after {
  content: "";
  position: absolute;
  left: 6%;
  right: 6%;
  top: -16px;
  height: 64px;
  border-radius: 18px;
  background: var(--fold-1);
}

.hero-shot::after {
  left: 13%;
  right: 13%;
  top: -30px;
  background: var(--fold-2);
  z-index: -1;
}

.shot-frame {
  position: relative;
  z-index: 1;
  display: block;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.shot-frame img {
  width: 100%;
}

/* Wide screens: copy on the left, screenshot on the right, both inside the centered container. */
@media (min-width: 1080px) {
  .hero {
    padding-block: 88px 104px;
  }

  .hero .container {
    display: grid;
    grid-template-columns: minmax(0, 30rem) minmax(0, 1fr);
    gap: clamp(40px, 4vw, 64px);
    align-items: center;
  }

  .hero h1 {
    font-size: clamp(3rem, 1.5rem + 2.6vw, 4rem);
  }

  .hero-shot {
    margin: 0;
  }
}

@media (max-width: 600px) {
  .hero-shot::before {
    top: -10px;
    height: 40px;
    border-radius: 12px;
  }

  .hero-shot::after {
    top: -19px;
    height: 40px;
    border-radius: 12px;
  }

  .shot-frame {
    border-radius: 10px;
  }
}

/* ---------- Sections ---------- */

.section {
  padding-block: clamp(64px, 9vw, 112px);
}

.section-head {
  max-width: 44rem;
  margin-bottom: clamp(32px, 5vw, 48px);
}

.kicker {
  margin-bottom: 10px;
  color: var(--kicker);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section h2 {
  font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.625rem);
  font-weight: 800;
}

.section-lead {
  margin-top: 14px;
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* ---------- Features ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-card {
  padding: 26px 24px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--gradient);
  color: #fff;
  box-shadow: inset 0 -3px 0 rgba(6, 182, 212, 0.55);
}

.feature-card h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* ---------- Privacy ---------- */

.privacy {
  background: var(--bg-tint);
  border-block: 1px solid var(--border);
}

.privacy-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
}

@media (min-width: 900px) {
  .privacy-inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .privacy-intro {
    position: sticky;
    top: 32px;
  }
}

.privacy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 24px;
}

.text-link {
  font-weight: 600;
}

.text-link::after {
  content: " \2192";
}

.privacy-list {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.privacy-list li {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 1rem;
}

.privacy-list strong {
  color: var(--text);
}

.check {
  box-sizing: content-box;
  padding: 8px;
  width: 20px;
  height: 20px;
  border-radius: 10px;
  background: var(--check-bg);
  color: var(--check);
}

/* ---------- Screenshots ---------- */

.shot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px) 28px;
}

@media (min-width: 760px) {
  .shot-grid {
    grid-template-columns: 1fr 1fr;
  }

  .shot-wide {
    grid-column: 1 / -1;
  }
}

.shot {
  margin: 0;
}

.shot .shot-frame {
  box-shadow: var(--shadow);
}

.shot a.shot-frame:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-lg);
}

.shot figcaption {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* ---------- Open source ---------- */

.open-source {
  padding-top: 0;
}

.oss-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--border);
  border-radius: 24px;
  background:
    radial-gradient(ellipse 70% 80% at 100% 0%, var(--glow-1), transparent 70%),
    var(--surface);
  box-shadow: var(--shadow);
}

@media (min-width: 900px) {
  .oss-card {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
    align-items: center;
  }
}

.oss-copy > p:not(.kicker) {
  margin-top: 14px;
  color: var(--text-muted);
}

.code-block {
  margin: 24px 0 0;
  padding: 16px 18px;
  overflow-x: auto;
  border-radius: 12px;
  background: var(--code-bg);
  color: var(--code-text);
  font-family: var(--mono);
  font-size: 0.875rem;
  line-height: 1.7;
  border-left: 3px solid var(--cyan);
}

.code-block code {
  font-size: inherit;
}

.oss-links {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.oss-links a {
  display: block;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg);
  text-decoration: none;
}

.oss-links a:hover {
  border-color: var(--brand);
}

.oss-link-title {
  display: block;
  color: var(--link);
  font-weight: 700;
}

.oss-link-title::after {
  content: " \2192";
}

.oss-link-text {
  display: block;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 40px 48px;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

@media (min-width: 760px) {
  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .footer-note {
    grid-column: 1 / -1;
  }
}

.footer-inner .brand {
  justify-self: start;
}

.footer-nav ul {
  gap: 8px 24px;
}

.footer-nav a {
  color: var(--text-muted);
}

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

.footer-note {
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ---------- Document pages (privacy policy, 404) ---------- */

.doc {
  padding-block: clamp(40px, 7vw, 80px) clamp(56px, 8vw, 96px);
}

.prose {
  max-width: 46rem;
}

.prose h1 {
  font-size: clamp(2rem, 1.4rem + 2.6vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.prose h1 + p {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.prose h2 {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 1.5rem;
  font-weight: 750;
  scroll-margin-top: 24px;
}

.prose h3 {
  margin-top: 32px;
  font-size: 1.1875rem;
}

.prose p,
.prose ul,
.prose ol,
.prose .table-wrap,
.prose pre {
  margin-top: 16px;
}

.prose ul,
.prose ol {
  padding-left: 1.4em;
}

.prose li + li {
  margin-top: 8px;
}

.prose li::marker {
  color: var(--brand-2);
}

.prose code {
  padding: 0.12em 0.4em;
  border-radius: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  overflow-wrap: anywhere;
}

.prose pre {
  padding: 16px 18px;
  overflow-x: auto;
  border-radius: 12px;
  background: var(--code-bg);
  color: var(--code-text);
}

.prose pre code {
  padding: 0;
  border: 0;
  background: none;
}

.prose a {
  overflow-wrap: anywhere;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.prose th,
.prose td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}

.prose tr:last-child td {
  border-bottom: 0;
}

.prose th {
  background: var(--surface-2);
  font-weight: 700;
}

.prose td:first-child {
  white-space: nowrap;
}

@media (max-width: 480px) {
  .prose th,
  .prose td {
    padding: 10px 12px;
  }

  .prose td:first-child {
    white-space: normal;
  }

  /* Keep permission names like unlimitedStorage whole; the purpose column wraps instead. */
  .prose td code {
    overflow-wrap: normal;
  }
}

.back-link {
  display: inline-block;
  margin-top: 48px;
  font-weight: 600;
}

.not-found h1 {
  font-size: clamp(2rem, 1.4rem + 2.6vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.not-found .cta-row {
  margin-top: 28px;
}

.not-found .lead {
  margin-top: 16px;
}

@media print {
  .site-header nav,
  .skip-link,
  .site-footer nav {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }
}