/* Biotraubensaft — modern, dependency-free stylesheet.
   System fonts only (no external requests), fluid type, light + dark. */

:root {
  --grape: #5b2a53;
  --grape-deep: #3d1a38;
  --grape-light: #8d5384;
  --leaf: #6f8f3f;
  --gold: #c9a227;
  --ink: #241f26;
  --body: #4a4450;
  --muted: #7b7280;
  --surface: #ffffff;
  --bg: #fbf8f6;
  --line: #e8e0e4;
  --radius: 14px;
  --shadow: 0 1px 2px rgb(36 31 38 / 6%), 0 8px 24px -12px rgb(36 31 38 / 18%);
  --wrap: 72rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --grape: #d9a7d0;
    --grape-deep: #f0dcec;
    --grape-light: #b785ae;
    --leaf: #a3c46b;
    --ink: #f4eef2;
    --body: #cdc4cd;
    --muted: #9a90a0;
    --surface: #241f27;
    --bg: #1a161c;
    --line: #362f39;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 10px 30px -14px rgb(0 0 0 / 70%);
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font: 400 clamp(1rem, .96rem + .2vw, 1.075rem)/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  margin: 0 0 .5em;
  color: var(--ink);
  font-family: ui-serif, Georgia, "Iowan Old Style", "Times New Roman", serif;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; }

a { color: var(--grape); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--grape-light); }

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

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }
.section { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.muted { color: var(--muted); font-size: .9rem; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 10;
  background: var(--surface); color: var(--ink); padding: .75rem 1rem; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

:where(a, button):focus-visible {
  outline: 2px solid var(--grape-light);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between; padding-block: .85rem; }
.brand { display: inline-flex; align-items: center; gap: .5rem; text-decoration: none; }
.brand-mark { font-size: 1.4rem; }
.brand-text {
  font-family: ui-serif, Georgia, serif; font-size: 1.3rem; font-weight: 600;
  color: var(--ink); letter-spacing: -.02em;
}
.nav { display: flex; flex-wrap: wrap; gap: clamp(.75rem, 2vw, 1.6rem); list-style: none; margin: 0; padding: 0; }
.nav a { color: var(--body); text-decoration: none; font-size: .95rem; padding-block: .25rem; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); border-color: var(--grape); }

/* ------------------------------------------------------------------ hero */
.hero {
  background:
    radial-gradient(120% 100% at 80% -20%, color-mix(in srgb, var(--grape) 22%, transparent), transparent 60%),
    linear-gradient(180deg, color-mix(in srgb, var(--grape) 8%, transparent), transparent);
  border-bottom: 1px solid var(--line);
}
.hero-inner { padding-block: clamp(3rem, 9vw, 6rem); max-width: 46rem; }
.eyebrow { color: var(--grape); font-size: .8rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 1rem; }
.lead { font-size: clamp(1.05rem, 1rem + .4vw, 1.25rem); color: var(--body); }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

.btn {
  display: inline-block; padding: .7rem 1.4rem; border-radius: 100px;
  background: var(--grape); color: #fff; text-decoration: none; font-weight: 500;
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { background: var(--grape-deep); color: #fff; transform: translateY(-1px); }
@media (prefers-color-scheme: dark) { .btn { color: #1a161c; } .btn:hover { color: #1a161c; } }
.btn-ghost { background: transparent; color: var(--grape); border: 1px solid var(--line); }
.btn-ghost:hover { background: color-mix(in srgb, var(--grape) 10%, transparent); color: var(--grape); }

/* ----------------------------------------------------------------- cards */
.section-head { display: flex; flex-wrap: wrap; gap: 1rem; align-items: baseline; justify-content: space-between; margin-bottom: 1.75rem; }
.more { font-size: .95rem; text-decoration: none; }
.more:hover { text-decoration: underline; }

.grid { display: grid; gap: clamp(1rem, 2.5vw, 1.75rem); }
.grid-cards { grid-template-columns: repeat(auto-fill, minmax(min(100%, 15.5rem), 1fr)); }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 2px 4px rgb(36 31 38 / 8%), 0 16px 32px -16px rgb(36 31 38 / 30%); }
.card-link { display: block; color: inherit; text-decoration: none; height: 100%; }
.card-img { width: 100%; aspect-ratio: 4 / 5; object-fit: contain; background: #f7f3f0; padding: 1rem; }
.card-img-wide { aspect-ratio: 3 / 2; object-fit: cover; padding: 0; }
.card-body { padding: 1.1rem 1.25rem 1.35rem; }
.card-body h3 { margin-bottom: .35rem; color: var(--ink); }
.card-body p { margin-bottom: .3rem; }

.tag {
  display: inline-block; margin-bottom: .5rem; padding: .15rem .6rem; border-radius: 100px;
  font-size: .72rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  background: color-mix(in srgb, var(--grape) 12%, transparent); color: var(--grape);
}
.tag-red { background: color-mix(in srgb, #8e2b4a 15%, transparent); color: color-mix(in srgb, #8e2b4a 78%, var(--ink)); }
.tag-rose { background: color-mix(in srgb, #d97b8c 20%, transparent); color: color-mix(in srgb, #b1566a 82%, var(--ink)); }
.tag-white { background: color-mix(in srgb, var(--gold) 20%, transparent); color: color-mix(in srgb, var(--gold) 70%, var(--ink)); }

.rating { color: var(--gold); letter-spacing: .12em; margin: 0; }
.rating-lg { font-size: 1.3rem; margin-bottom: 1rem; }

/* --------------------------------------------------------------- filters */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.5rem 0 2rem; }
.chip {
  font: inherit; font-size: .9rem; cursor: pointer;
  padding: .45rem 1rem; border-radius: 100px;
  border: 1px solid var(--line); background: var(--surface); color: var(--body);
}
.chip:hover { border-color: var(--grape-light); color: var(--ink); }
.chip.is-active { background: var(--grape); border-color: var(--grape); color: #fff; }
@media (prefers-color-scheme: dark) { .chip.is-active { color: #1a161c; } }

/* ---------------------------------------------------------------- detail */
.breadcrumb { font-size: .9rem; margin-bottom: 1.5rem; }
.detail-grid { display: grid; gap: clamp(1.5rem, 4vw, 3rem); grid-template-columns: 1fr; align-items: start; }
@media (min-width: 48rem) { .detail-grid { grid-template-columns: minmax(0, 22rem) minmax(0, 1fr); } }
.detail-img {
  width: 100%; aspect-ratio: 4 / 5; object-fit: contain;
  background: #f7f3f0;
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem;
}
.specs { display: grid; gap: .1rem; margin: 1.75rem 0; }
.spec { display: grid; grid-template-columns: minmax(8rem, 12rem) 1fr; gap: 1rem; padding: .6rem 0; border-top: 1px solid var(--line); }
.spec dt { color: var(--muted); font-size: .9rem; }
.spec dd { margin: 0; color: var(--ink); }

/* ----------------------------------------------------------------- prose */
.prose { max-width: 44rem; }
.prose img, .hero-img { border-radius: var(--radius); margin-block: 1.75rem; }
.prose h2 { margin-top: 2.25rem; }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose li { margin-bottom: .4rem; }
.prose blockquote {
  margin: 1.75rem 0; padding: .25rem 0 .25rem 1.25rem;
  border-left: 3px solid var(--grape); color: var(--ink); font-style: italic;
}

/* ---------------------------------------------------------------- footer */
.site-footer { margin-top: clamp(3rem, 8vw, 5rem); border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner { padding-block: 2.5rem; display: grid; gap: .75rem; }
.nav-footer { gap: 1.25rem; }
.nav-footer a { font-size: .9rem; }