@layer reset, base, layout, components;

/* ═══════════════════════════════════════════════════════════
   Tokens — mirrors mobile/DESIGN.md (Crimson Rose · Dark).
   Dark is canonical for BiteSize; light is deferred, so this
   page commits to dark rather than faking a second theme.
   ═══════════════════════════════════════════════════════════ */
:root {
  color-scheme: dark;

  /* Brand */
  --primary: #a01f33;
  --primary-pressed: #7e1828;
  --secondary: #e8724a;
  --tertiary: #f5c842;

  /* Surfaces */
  --canvas: #121212;
  --surface: #1e1e1e;
  --surface-alt: #2a2a2a;

  /* Ink — #757575 from the mobile system is reserved for input
     borders only; it fails 4.5:1 as text on these surfaces. */
  --ink: #f5f5f5;
  --ink-mute: #a0a0a0;
  --ink-bright: #ffffff;
  --on-dark: #ffffff;

  /* Lines & status */
  --hairline: #2a2a2a;
  --input-border: #757575;
  --success: #22c55e;
  --danger: #ef4444;
  --focus: var(--secondary); /* crimson on near-black misses 3:1 for a focus ring */

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Outfit", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;

  --step-display: clamp(2.3rem, 1.5rem + 3.1vw, 3.6rem);
  --step-h2: clamp(1.75rem, 1.3rem + 1.8vw, 2.5rem);
  --step-lede: clamp(1.05rem, 1rem + 0.35vw, 1.25rem);

  /* Rhythm */
  --shell: 70rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-gap: clamp(4.5rem, 9vw, 8rem);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

/* ═══════════════════════════ Fonts ═══════════════════════════ */
@font-face {
  font-family: "Fraunces";
  src: url("/fonts/fraunces-700-latin.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("/fonts/outfit-400-latin.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("/fonts/outfit-600-latin.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("/fonts/outfit-700-latin.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@layer reset {
  html { box-sizing: border-box; }
  :where(body, h1, h2, h3, p, ol, ul, dl, dd, figure, fieldset) { margin: 0; padding: 0; }
  :where(ol, ul) { list-style: none; }
  :where(img, svg) { display: block; max-width: 100%; }
  :where(input, button) { font: inherit; color: inherit; }
}

@layer base {
  *, ::before, ::after { box-sizing: inherit; }

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

  body {
    background: var(--canvas);
    color: var(--ink);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-wrap: break-word;
  }

  h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.12;
  }

  a { color: inherit; text-decoration-color: color-mix(in oklab, currentColor 40%, transparent); text-underline-offset: 0.2em; }
  a:hover { text-decoration-color: currentColor; }

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

  ::selection { background: var(--primary); color: var(--on-dark); }
  ::placeholder { color: var(--ink-mute); opacity: 1; }

  .skip-link {
    position: absolute;
    inset-inline-start: var(--gutter);
    inset-block-start: -4rem;
    z-index: 10;
    padding: 0.75rem 1rem;
    background: var(--surface);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: inset-block-start 0.15s ease;
  }
  .skip-link:focus-visible { inset-block-start: 0.75rem; }
}

@layer layout {
  .shell {
    inline-size: min(100% - (var(--gutter) * 2), var(--shell));
    margin-inline: auto;
  }

  .section { padding-block: var(--section-gap); }

  /* Anchored sections must clear the sticky header. Section padding happens
     to be enough today; this makes the clearance deliberate so shrinking
     --section-gap can't quietly tuck a heading under the header. */
  :where(.section, .pull, .hero)[id] { scroll-margin-block-start: 5rem; }
  .section--alt { background: var(--surface); }

  .section__title {
    font-size: var(--step-h2);
    letter-spacing: -0.01em;
    text-wrap: balance;
    margin-block-end: clamp(2rem, 4vw, 3rem);
  }
}

@layer components {

  /* ───────────────── Header ───────────────── */
  .site-header {
    border-block-end: 1px solid var(--hairline);
    background: color-mix(in oklab, var(--canvas) 88%, transparent);
    backdrop-filter: blur(10px);
    position: sticky;
    inset-block-start: 0;
    z-index: 5;
  }
  .site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-block-size: 4rem;
  }

  .wordmark {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: -0.02em;
    text-decoration: none;
  }
  .wordmark__mark {
    flex: none;
    /* Cropped to the artwork's own bounds, so height drives the size and the
       aspect ratio reserves the width before it loads. */
    block-size: 1.7em;
    inline-size: auto;
    aspect-ratio: 568 / 767;
  }
  .wordmark--sm { font-size: 1.1rem; }

  .site-nav {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 2.5vw, 1.75rem);
    font-size: 0.95rem;
  }
  .site-nav a:not(.btn) { color: var(--ink-mute); text-decoration: none; }
  .site-nav a:not(.btn):hover { color: var(--ink); }
  @media (max-width: 34rem) {
    .site-nav li:not(:last-child) { display: none; }
  }

  /* ───────────────── Buttons ───────────────── */
  .btn {
    --btn-bg: transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-block-size: 3rem;
    padding: 0.75rem 1.25rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    background: var(--btn-bg);
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
  }
  .btn--sm { min-block-size: 2.5rem; padding: 0.5rem 0.9rem; }

  .btn--primary { --btn-bg: var(--primary); color: var(--on-dark); }
  .btn--primary:hover:not(:disabled) { --btn-bg: color-mix(in oklab, var(--primary) 88%, white); }
  .btn--primary:active:not(:disabled) { --btn-bg: var(--primary-pressed); }

  .btn--ghost { border-color: var(--input-border); color: var(--ink); }
  .btn--ghost:hover { --btn-bg: var(--surface-alt); }

  .btn:disabled { opacity: 0.45; cursor: default; }

  /* ───────────────── Hero ───────────────── */
  .hero { padding-block: clamp(3rem, 7vw, 6rem) var(--section-gap); }
  .hero__inner {
    display: grid;
    gap: clamp(2.5rem, 5vw, 4rem);
  }
  @media (min-width: 60rem) {
    .hero__inner {
      grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
      align-items: start;
    }
  }

  .eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--tertiary);
    margin-block-end: 1.25rem;
  }

  .hero__title {
    font-size: var(--step-display);
    letter-spacing: -0.02em;
    text-wrap: balance;
    max-inline-size: 20ch;
  }

  .lede {
    margin-block-start: 1.5rem;
    max-inline-size: 46ch;
    font-size: var(--step-lede);
    color: var(--ink-mute);
    text-wrap: pretty;
  }

  /* ───────────────── Signup ───────────────── */
  .signup {
    margin-block-start: 2rem;
    display: grid;
    gap: 0.75rem;
    max-inline-size: 34rem;
  }
  @media (min-width: 30rem) {
    .signup {
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: end;
    }
    .signup__hint,
    .signup__status { grid-column: 1 / -1; }
  }

  .signup__field { display: grid; gap: 0.4rem; }
  .signup__field label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ink-mute);
  }
  .signup__field input {
    inline-size: 100%;
    min-block-size: 3rem;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    background: var(--surface);
    color: var(--ink);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    transition: border-color 0.15s ease;
  }
  .signup__field input:hover { border-color: var(--ink-mute); }
  .signup__field input:focus-visible { border-color: var(--focus); }
  .signup__field input:user-invalid { border-color: var(--danger); }

  .signup__hint { font-size: 0.85rem; color: var(--ink-mute); }
  .signup__status { font-size: 0.9rem; font-weight: 600; min-block-size: 1lh; }
  .signup__status:empty { display: none; }
  .signup__status[data-tone="ok"] { color: var(--success); }
  .signup__status[data-tone="error"] { color: var(--danger); }

  .signup--wide { margin-inline: auto; }

  /* ═══════════ Signature: what can I make with this? ═══════════ */
  .picker {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: clamp(1.25rem, 3vw, 1.75rem);
    container-type: inline-size;
  }

  .label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }

  .picker__pick { border: 0; }

  .chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-block-start: 0.9rem;
  }

  .chip {
    display: inline-flex;
    align-items: center;
    min-block-size: 2.5rem;
    padding: 0.45rem 0.9rem;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ink-mute);
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  }
  .chip input {
    position: absolute;
    clip-path: inset(50%);
    inline-size: 1px;
    block-size: 1px;
    overflow: hidden;
  }
  .chip:hover { background: var(--surface-alt); color: var(--ink); }
  .chip:has(:checked) {
    background: color-mix(in oklab, var(--primary) 20%, transparent);
    border-color: var(--primary);
    color: var(--ink);
  }
  .chip:has(:checked) span::before { content: "\2713\00a0"; }
  .chip:has(:focus-visible) { outline: 2px solid var(--focus); outline-offset: 3px; }

  .picker__result {
    margin-block-start: 1.5rem;
    padding-block-start: 1.5rem;
    border-block-start: 1px solid var(--hairline);
  }
  .picker__fallback,
  .picker__empty { color: var(--ink-mute); font-size: 0.95rem; text-wrap: pretty; }

  .hit { margin-block-start: 0.6rem; }

  .hit__name {
    font-family: var(--font-body);
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.3;
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.4rem 0.75rem;
  }
  .hit__mins {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-mute);
  }

  .hit__verdict {
    margin-block-start: 0.3rem;
    font-size: 0.9rem;
    color: var(--ink-mute);
  }
  .hit__verdict--go { color: var(--success); }

  .picker__foot {
    margin-block-start: 1.5rem;
    padding-block-start: 1.25rem;
    border-block-start: 1px solid var(--hairline);
    font-size: 0.8rem;
    color: var(--ink-mute);
  }

  /* ───────────────── Pull quote ───────────────── */
  .pull {
    padding-block: var(--section-gap);
    border-block: 1px solid var(--hairline);
  }
  .pull__text {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 1.1rem + 2.2vw, 2.9rem);
    line-height: 1.2;
    letter-spacing: -0.015em;
    text-wrap: pretty;
    max-inline-size: 22ch;
  }
  .pull__text em { font-style: normal; color: var(--secondary); }
  .pull__after {
    margin-block-start: 1.75rem;
    max-inline-size: 42ch;
    font-size: var(--step-lede);
    color: var(--ink-mute);
    text-wrap: pretty;
  }
  .source { margin-block-start: 2rem; font-size: 0.8rem; color: var(--ink-mute); }

  /* ───────────────── The two problems ───────────────── */
  .halves {
    display: grid;
    gap: clamp(2.5rem, 5vw, 4rem);
  }
  @media (min-width: 52rem) {
    .halves { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }
  .half { border-block-start: 2px solid var(--primary); padding-block-start: 1.25rem; }
  .half h3 { font-size: 1.5rem; letter-spacing: -0.01em; }
  .half > p { margin-block-start: 0.9rem; color: var(--ink-mute); text-wrap: pretty; }
  .half__against { font-size: 0.9rem; }

  /* A quotation of the product, not a second signature — no card chrome. */
  .cookstep {
    margin-block-start: 1.75rem;
    padding-inline-start: 1.25rem;
    border-inline-start: 1px solid var(--secondary);
  }
  .cookstep__do {
    font-family: var(--font-display);
    font-size: 1.5rem;
    line-height: 1.15;
    letter-spacing: -0.01em;
    color: var(--ink);
    margin-block-start: 0.6rem;
  }
  .cookstep p { margin-block-start: 0.5rem; text-wrap: pretty; }
  .cookstep__detail { font-size: 0.95rem; color: var(--ink); }
  .cookstep__tell,
  .cookstep__meta { color: var(--ink-mute); }
  .cookstep__tell { font-size: 0.95rem; }
  .cookstep__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
  }
  .cookstep__timer {
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    background: color-mix(in oklab, var(--secondary) 22%, var(--canvas));
    color: var(--secondary);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
  }

  /* ───────────────── What we heard ───────────────── */
  .section__intro {
    margin-block-start: -1.5rem;
    margin-block-end: 2.5rem;
    max-inline-size: 46ch;
    color: var(--ink-mute);
    text-wrap: pretty;
  }

  .heard { display: grid; gap: 0; max-inline-size: 62ch; }
  .heard li {
    padding-block: 1.1rem;
    font-size: var(--step-lede);
    text-wrap: pretty;
  }
  .heard li:not(:last-child) { border-block-end: 1px solid var(--hairline); }

  /* ───────────────── Closing ───────────────── */
  .closing__inner { text-align: center; display: grid; justify-items: center; }
  .closing__title { font-size: var(--step-h2); letter-spacing: -0.01em; }
  .closing .lede { margin-inline: auto; }
  .closing .signup__field label { text-align: start; }
  .closing .signup__hint,
  .closing .signup__status { text-align: center; }

  /* ───────────────── Footer ───────────────── */
  .site-footer {
    border-block-start: 1px solid var(--hairline);
    padding-block: 2.5rem;
  }
  .site-footer__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }
  .site-footer__note { font-size: 0.85rem; color: var(--ink-mute); }
}

/* ═══════════════════════════ Motion ═══════════════════════════
   Opt-in: nothing animates unless the visitor allows motion. */
@media (prefers-reduced-motion: no-preference) {
  @keyframes rise {
    from { opacity: 0; translate: 0 0.6rem; }
    to   { opacity: 1; translate: 0 0; }
  }
  @keyframes breathe {
    50% { opacity: 0.35; }
  }

  .picker__result .hit {
    animation: rise 0.35s cubic-bezier(0.22, 0.7, 0.3, 1);
  }
  .cookstep__timer { animation: breathe 2.4s ease-in-out infinite; }
}

@media (forced-colors: active) {
  .chip:has(:checked) { border-color: Highlight; }
  .half { border-block-start-color: CanvasText; }
  .cookstep { border-inline-start-color: CanvasText; }
}