/* ============================================================
   ERB — base.css
   Design tokens, self-hosted type, reset and shared components.
   Plain CSS. No build step, no framework. Edit values below to
   re-skin the whole site.
   ============================================================ */

/* ── Fonts (self-hosted, latin subset) ─────────────────────── */
@font-face {
  font-family: "Instrument Serif";
  src: url("./fonts/instrument-serif.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Serif";
  src: url("./fonts/instrument-serif-italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("./fonts/inter.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("./fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

/* ── Tokens ────────────────────────────────────────────────── */
:root {
  --paper: #f8f7f3;
  --paper-soft: #f1efe8;
  --paper-deep: #e7e4db;
  --ink: #101a23;
  --ink-soft: #2b3641;
  --ink-muted: #66707a;
  --line: rgba(16, 26, 35, 0.12);
  --line-strong: rgba(16, 26, 35, 0.26);
  --accent: #147a45;
  --accent-deep: #0d5c34;
  --accent-cream: #f1fbf4;
  --up: #147a45;
  --down: #b93a25;
  --dark: #0c151c;
  --dark-soft: #101c25;
  --dark-raised: #16242e;
  --dark-text: #eef2ef;
  --dark-muted: #8fa0aa;
  --dark-line: rgba(238, 242, 239, 0.12);

  --display: "Instrument Serif", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: 1400px;
  --gutter: clamp(20px, 4.2vw, 64px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 68px;
}

/* ── Reset ─────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
}
[hidden] {
  display: none !important;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}
body {
  min-height: 100svh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  font-feature-settings: "kern" 1, "liga" 1, "cv11" 1, "ss01" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img,
svg,
video {
  display: block;
  max-width: 100%;
}
button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}
button {
  background: none;
  border: 0;
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
  padding: 0;
}
::selection {
  background: var(--accent);
  color: var(--accent-cream);
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ── Type ──────────────────────────────────────────────────── */
.display,
h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 0.98;
  text-wrap: balance;
}
em,
.italic {
  font-style: italic;
}
.serif-accent {
  font-style: italic;
  color: var(--accent);
}

.label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  line-height: 1.5;
}
.label .num {
  color: var(--accent);
  margin-right: 0.7em;
}
.label--light {
  color: var(--dark-muted);
}
.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* Small accent dot used as a separator in eyebrow rows */
.eyebrow-sep {
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
  flex: none;
  display: inline-block;
}

/* ── Layout ────────────────────────────────────────────────── */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  padding-block: clamp(64px, 9vw, 132px);
  border-top: 1px solid var(--line);
  position: relative;
}
.section--dark {
  background: var(--dark);
  color: var(--dark-text);
  border-color: var(--dark-line);
}
.section--dark .label {
  color: var(--dark-muted);
}

/* Scroll progress line */
.progress {
  position: fixed;
  inset: 0 0 auto;
  height: 2px;
  z-index: 120;
  background: transparent;
  pointer-events: none;
}
.progress__bar {
  height: 100%;
  background: var(--accent);
  transform: scaleX(var(--progress, 0));
  transform-origin: 0 50%;
}

/* Film grain */
.grain {
  position: fixed;
  inset: -50%;
  z-index: 90;
  pointer-events: none;
  opacity: 0.22;
  mix-blend-mode: multiply;
  background-image: url("./grain.svg");
  background-size: 160px 160px;
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  --btn-border: var(--ink);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7em;
  padding: 0.95em 1.35em;
  min-height: 50px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1;
  border-radius: 2px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.25s var(--ease),
    color 0.25s var(--ease), border-color 0.25s var(--ease);
  will-change: transform;
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--ink);
}
.btn:active {
  transform: translate(0, 0);
  box-shadow: 1px 1px 0 var(--ink);
}
.btn svg {
  width: 17px;
  height: 17px;
  flex: none;
}
.btn--primary {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
}
.btn--accent {
  --btn-bg: var(--accent);
  --btn-fg: var(--accent-cream);
  --btn-border: var(--accent-deep);
}
.btn--accent:hover {
  box-shadow: 4px 4px 0 var(--accent-deep);
}
.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-border: var(--line-strong);
}
.btn--ghost:hover {
  box-shadow: 4px 4px 0 rgba(20, 19, 15, 0.12);
}
.btn--onaccent {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  --btn-border: var(--ink);
}
.btn--onaccent:hover {
  box-shadow: 4px 4px 0 rgba(20, 19, 15, 0.35);
}
.btn--sm {
  min-height: 40px;
  padding: 0.7em 1em;
  font-size: 10px;
}
.btn--wide {
  width: 100%;
}
.btn[data-state="empty"] {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-border: var(--line-strong);
  cursor: not-allowed;
}
.btn[data-state="empty"]:hover {
  transform: none;
  box-shadow: none;
}
.btn__arrow {
  transition: transform 0.35s var(--ease);
}
.btn:hover .btn__arrow {
  transform: translateX(3px);
}

/* Inline text link with an animated underline */
.underline-link {
  position: relative;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-bottom: 3px;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.35s var(--ease);
}
.underline-link:hover {
  background-size: 35% 1px;
}

/* ── 404 page ──────────────────────────────────────────────── */
.error-page {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 18px;
  padding-block: 80px;
}
.error-title {
  font-size: clamp(2.8rem, 8vw, 6rem);
  max-width: 16ch;
}
.error-copy {
  max-width: 44ch;
  color: var(--ink-muted);
  font-size: 15px;
}
.error-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 10px;
}

/* ── Toast (landing + admin) ───────────────────────────────── */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 150;
  transform: translate(-50%, 24px);
  opacity: 0;
  pointer-events: none;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid rgba(244, 241, 233, 0.2);
  padding: 11px 18px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
  max-width: calc(100vw - 40px);
  text-align: center;
}
.toast.is-open {
  opacity: 1;
  transform: translate(-50%, 0);
}
.toast[data-tone="error"] {
  background: var(--accent-deep);
}

/* ── Small utilities ───────────────────────────────────────── */
.hairline {
  height: 1px;
  background: var(--line);
  border: 0;
}
.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: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 11px;
  transform: translateY(-200%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus-visible {
  transform: translateY(0);
}

/* ── Reveal on scroll ──────────────────────────────────────
   Content stays visible without JavaScript. The hiding rule only
   applies once landing.js adds .has-js to <html>. */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
html.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html.has-js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}