/* ============================================================
   Writing Studio — landing page
   Same paper, same brand ink, no framework.
   ============================================================ */

:root {
  color-scheme: light;

  --bg: #faf4e6;
  --panel: #fffbf1;
  --panel-hi: #fffdf7;

  --line: rgba(72, 58, 34, 0.14);
  --line-hi: rgba(72, 58, 34, 0.3);

  --fg: #221d15;
  --fg-dim: #5d5344;
  --fg-faint: #7b7160;

  --brand-ink: #17395c;
  --accent: #0b62c4;

  --wash: rgba(72, 58, 34, 0.045);

  --font: "Satoshi", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --brand-font: "Plus Jakarta Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.22, 0.8, 0.24, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;

    --bg: #09090c;
    --panel: #13131b;
    --panel-hi: #191924;

    --line: rgba(255, 255, 255, 0.09);
    --line-hi: rgba(255, 255, 255, 0.2);

    --fg: #f3f3f6;
    --fg-dim: #a6a6b8;
    --fg-faint: #707084;

    --brand-ink: #cfe0f5;
    --accent: #38bdf8;

    --wash: rgba(255, 255, 255, 0.045);
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(760px 460px at 14% -6%, rgba(202, 148, 44, 0.1), transparent 64%),
    radial-gradient(680px 420px at 92% 2%, rgba(124, 88, 158, 0.06), transparent 62%);
}

::selection {
  background: rgba(11, 98, 196, 0.16);
}

a { color: inherit; }

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

p { margin: 0; }

h1, h2, h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  text-wrap: balance;
}

code, pre {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
  font-variant-ligatures: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Page shell ────────────────────────────────────────────── */
.page {
  width: 100%;
  max-width: 780px;
  margin-inline: auto;
  padding: 56px 24px 0;
}

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  margin-bottom: 52px;
}

.hero img {
  width: 100%;
  max-width: 720px;
}

/* ── Introduction ──────────────────────────────────────────── */
.intro {
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.intro h1 {
  font-size: clamp(1.5rem, 3.6vw, 2.1rem);
  letter-spacing: -0.035em;
  margin-bottom: 22px;
  max-width: 26ch;
}

.lede {
  color: var(--fg-dim);
  font-size: 16.5px;
  line-height: 1.72;
  max-width: 62ch;
}

.lede + .lede { margin-top: 16px; }

.facts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.facts li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.facts li + li::before {
  content: "·";
  color: var(--fg-faint);
  opacity: 0.6;
}

/* ── Sections ──────────────────────────────────────────────── */
.shots,
.install {
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--line);
}

.shots h2,
.install h2,
.first-run h2 {
  font-size: 1.28rem;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
}

.section-note {
  color: var(--fg-dim);
  font-size: 14.5px;
  line-height: 1.68;
  max-width: 62ch;
  margin-bottom: 34px;
}

/* ── Screenshots ───────────────────────────────────────────── */
.shot {
  margin: 0;
}

.shot img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow:
    0 1px 2px rgba(34, 28, 17, 0.06),
    0 26px 52px -38px rgba(34, 28, 17, 0.55);
  transition: border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

/* Hover pops the frame out; click opens the full-size view. */
.shot-zoom {
  display: block;
  border-radius: 14px;
  cursor: zoom-in;
  transition: transform 0.45s var(--ease);
}

.shot-zoom:hover { transform: translateY(-4px) scale(1.02); }
.shot-zoom:active { transform: translateY(-2px) scale(1.01); }

.shot-zoom:hover img,
.shot-zoom:focus-visible img {
  border-color: var(--line-hi);
  box-shadow:
    0 2px 4px rgba(34, 28, 17, 0.08),
    0 38px 70px -40px rgba(34, 28, 17, 0.65);
}

.shot-zoom:focus-visible {
  outline-offset: 6px;
}

.shot figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.shot figcaption code {
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  color: var(--fg-dim);
  background: none;
  border: 0;
  padding: 0;
  text-transform: none;
}

.shot-hint {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--fg-faint);
  opacity: 0.75;
  transition: opacity 0.25s var(--ease), color 0.25s var(--ease);
}

.shot:hover .shot-hint { opacity: 1; color: var(--fg-dim); }

/* Let the wide interface shot breathe past the text column. */
@media (min-width: 900px) {
  .shot-wide {
    width: min(960px, calc(100vw - 96px));
    margin-left: 50%;
    transform: translateX(-50%);
  }
}

.shot-terminal {
  width: min(100%, 460px);
  margin: 0 auto 34px;
}

.section-note code,
.hint code {
  font-size: 12px;
  padding: 1px 5px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--wash);
  color: var(--fg);
  white-space: nowrap;
}

/* ── Steps ─────────────────────────────────────────────────── */
.step {
  padding: 26px 0 30px;
  border-top: 1px solid var(--line);
}

.step:first-of-type { border-top: 0; padding-top: 0; }
.step:last-of-type { padding-bottom: 0; }

.step-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  margin-bottom: 8px;
}

.step h3 {
  font-size: 1rem;
  letter-spacing: -0.018em;
}

.step-tag {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 8px;
  white-space: nowrap;
}

.step > p {
  color: var(--fg-dim);
  font-size: 14px;
  line-height: 1.65;
  max-width: 62ch;
  margin-bottom: 14px;
}

/* ── Code blocks ───────────────────────────────────────────── */
.code {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  margin-bottom: 12px;
  transition: border-color 0.25s var(--ease);
}

.code:hover { border-color: var(--line-hi); }

.code pre {
  margin: 0;
  padding: 16px 84px 16px 18px;
  overflow-x: auto;
  color: var(--fg);
  -webkit-overflow-scrolling: touch;
}

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

.copy {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-hi);
  color: var(--fg-dim);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.copy:hover {
  color: var(--fg);
  border-color: var(--line-hi);
}

.copy[data-done] {
  color: var(--accent);
  border-color: currentColor;
}

.hint {
  font-size: 13px;
  color: var(--fg-faint);
  line-height: 1.7;
  max-width: 64ch;
}

.hint + .hint { margin-top: 6px; }

.hint code { font-size: 11.5px; white-space: normal; }

/* ── Options disclosure ────────────────────────────────────── */
.options {
  margin-top: 30px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.options summary {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 9px;
  width: fit-content;
  transition: color 0.2s;
}

.options summary::-webkit-details-marker { display: none; }
.options summary::before {
  content: "+";
  font-size: 13px;
  line-height: 1;
  color: var(--fg-faint);
}
.options[open] summary::before { content: "−"; }
.options summary:hover { color: var(--fg-dim); }

.options pre {
  margin: 14px 0 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  overflow-x: auto;
  color: var(--fg-dim);
  font-size: 12px;
}

/* ── First run ─────────────────────────────────────────────── */
.first-run {
  padding: 56px 0 72px;
}

.first-run > p {
  color: var(--fg-dim);
  font-size: 14.5px;
  line-height: 1.68;
  max-width: 62ch;
  margin: 0 0 26px;
}

.folders {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.folders li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.folders li:last-child { border-bottom: 0; padding-bottom: 0; }

.folders code {
  min-width: 132px;
  font-size: 12px;
  color: var(--brand-ink);
  font-weight: 500;
}

.folders span {
  font-size: 13.5px;
  color: var(--fg-faint);
}

/* ── Developed by ──────────────────────────────────────────── */
.author {
  padding: 52px 0 64px;
  border-top: 1px solid var(--line);
}

.author-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 12px;
}

.author-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--brand-font);
  font-weight: 700;
  font-size: clamp(1.4rem, 4.4vw, 1.85rem);
  letter-spacing: -0.03em;
  color: var(--fg);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.author-link:hover { color: var(--accent); }

.author-arrow {
  flex: none;
  transition: transform 0.3s var(--ease);
}

.author-link:hover .author-arrow { transform: translate(3px, -3px); }

.author-note {
  margin-top: 6px;
  font-size: 13px;
  color: var(--fg-faint);
}

/* ── Full-size screenshot view ─────────────────────────────── */
body.is-zoomed { overflow: hidden; }

.lightbox {
  position: fixed;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: 28px;
  border: 0;
  background: transparent;
}

.lightbox[open] {
  display: grid;
  place-items: center;
}

.lightbox::backdrop {
  background: rgba(12, 10, 6, 0.86);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.lightbox img {
  max-width: min(96vw, 1800px);
  max-height: 86vh;
  width: auto;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.8);
  cursor: zoom-out;
  animation: lightboxIn 0.3s var(--ease);
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.08);
  color: #f4f4f7;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.lightbox-close:hover { background: rgba(255, 255, 255, 0.16); border-color: rgba(255, 255, 255, 0.4); }
.lightbox-close:focus-visible { outline-color: #ffffff; }

@keyframes lightboxIn {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: none; }
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 26px 24px 40px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--fg-faint);
}

.footer a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.footer a:hover {
  color: var(--fg);
  border-bottom-color: var(--line-hi);
}

.footer .dot { opacity: 0.55; }

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

/* Masked so the mark takes the footer colour in either theme. */
.footer-mark {
  width: 13px;
  height: 13px;
  flex: none;
  background-color: currentColor;
  -webkit-mask: url("assets/logo.svg") center / contain no-repeat;
  mask: url("assets/logo.svg") center / contain no-repeat;
}

/* ── Small screens ─────────────────────────────────────────── */
@media (max-width: 560px) {
  .page { padding: 34px 20px 0; }
  .hero { margin-bottom: 34px; }
  .code pre { padding: 14px 16px 48px; }
  .copy { top: auto; bottom: 9px; right: 9px; }
  .folders code { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}