/* AiliFe — base stylesheet */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f6f5;
  --bg-inset: #eeeeed;
  --text: #17181a;
  --text-soft: #5c6066;
  --border: #e0e0de;
  --accent: #d94a17;          /* brand orange, darkened for contrast on white */
  --accent-hover: #b93c11;
  --accent-soft: #fdeee7;
  --brand: #ee5b27;           /* the logo orange itself */
  --shadow: 0 1px 2px rgba(0, 0, 0, .05), 0 10px 30px rgba(0, 0, 0, .07);
  --radius: 12px;
  --radius-sm: 7px;
  --maxw: 1180px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
          "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --wordmark-filter: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131416;
    --bg-soft: #1a1c1f;
    --bg-inset: #22252a;
    --text: #eceef0;
    --text-soft: #a3a9b1;
    --border: #2d3137;
    --accent: #ff7a45;
    --accent-hover: #ff9468;
    --accent-soft: #2b1a12;
    --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 10px 30px rgba(0, 0, 0, .35);
    /* The wordmark artwork is black; invert it so it reads on a dark page. */
    --wordmark-filter: invert(1);
  }
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.62;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* Hide translatable content until the language file has been applied,
   so the raw fallback text never flashes on screen. */
body:not(.i18n-ready) [data-i18n] { visibility: hidden; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

h1, h2, h3 { line-height: 1.24; margin: 0 0 .5em; font-weight: 650; letter-spacing: -.015em; }
h1 { font-size: clamp(2rem, 1.45rem + 2.2vw, 3rem); }
h2 { font-size: clamp(1.4rem, 1.2rem + 1vw, 1.95rem); }
h3 { font-size: 1.08rem; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.eyebrow {
  font-size: .78rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 .8em;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: #fff; padding: 10px 16px; border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

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

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 20px; min-height: 68px; }

.logo { display: flex; align-items: center; gap: 9px; }
.logo:hover { text-decoration: none; }
.logo-mark { width: 30px; height: 30px; }
.logo-word { width: auto; height: 19px; filter: var(--wordmark-filter); }

.site-nav { margin-inline-start: auto; }
.site-nav ul { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: 8px 12px; border-radius: var(--radius-sm);
  color: var(--text-soft); font-size: .95rem; font-weight: 500;
}
.site-nav a:hover { background: var(--bg-soft); color: var(--text); text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }

.lang-switch { display: flex; align-items: center; gap: 8px; }
.lang-switch select {
  font: inherit; font-size: .9rem;
  padding: 7px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text); cursor: pointer;
}

.nav-toggle {
  display: none; margin-inline-start: auto;
  background: none; border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 8px 10px; cursor: pointer; color: var(--text); font: inherit;
}

@media (max-width: 780px) {
  .nav-toggle { display: block; }
  .site-nav { display: none; width: 100%; order: 3; margin-inline-start: 0; padding-bottom: 14px; }
  .site-nav.open { display: block; }
  .header-inner { flex-wrap: wrap; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .site-nav a { padding: 10px 12px; }
  .lang-switch { padding-top: 10px; border-top: 1px solid var(--border); margin-top: 8px; }
  .lang-switch select { width: 100%; }
}

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

.btn {
  display: inline-block; padding: 12px 22px;
  border: 1px solid transparent; border-radius: var(--radius-sm);
  font: inherit; font-weight: 600; font-size: .95rem;
  cursor: pointer; text-align: center;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
@media (prefers-color-scheme: dark) { .btn-primary { color: #1a0d06; } }
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg-soft); }

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

.section { padding: 64px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 680px; margin-bottom: 32px; }
.section-head p { color: var(--text-soft); margin: 0; }

.hero { padding: 80px 0 72px; border-bottom: 1px solid var(--border); }
.hero-inner { max-width: 760px; }
.hero-text { font-size: 1.13rem; color: var(--text-soft); margin-bottom: 28px; text-wrap: pretty; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.page-head { padding: 48px 0 8px; }
.page-head p { color: var(--text-soft); max-width: 680px; }

/* ---------- Model cards ---------- */

.grid { display: grid; gap: 28px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid-two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.card {
  display: flex; flex-direction: column;
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: box-shadow .16s ease, transform .16s ease;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card-media { background: var(--bg-inset); aspect-ratio: 4 / 3; display: block; }
.card-media img { width: 100%; height: 100%; object-fit: contain; }
.card-body { padding: 22px; display: flex; flex-direction: column; flex: 1; gap: 10px; }
.card h3 { margin: 0; font-size: 1.3rem; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--accent); text-decoration: none; }
.card-tagline { color: var(--text-soft); margin: 0; }
.card-actions { margin: 8px 0 0; }

.hl-grid {
  display: grid; gap: 1px; margin: 8px 0 0;
  grid-template-columns: repeat(2, 1fr);
  background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-sm);
  overflow: hidden;
}
.hl-grid-wide { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 560px) { .hl-grid-wide { grid-template-columns: repeat(2, 1fr); } }
.hl { background: var(--bg); padding: 12px 14px; }
.hl-value { display: block; font-weight: 700; font-size: 1.05rem; letter-spacing: -.01em; }
.hl-label { display: block; font-size: .78rem; color: var(--text-soft); line-height: 1.35; margin-top: 2px; }

/* ---------- Comparison table ---------- */

.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.compare-table { width: 100%; border-collapse: collapse; font-size: .94rem; min-width: 560px; background: var(--bg); }
.compare-table th, .compare-table td { text-align: start; padding: 13px 18px; border-bottom: 1px solid var(--border); }
.compare-table thead th { font-size: 1.05rem; font-weight: 700; background: var(--bg-soft); }
.compare-table thead td { background: var(--bg-soft); border-bottom: 1px solid var(--border); }
.compare-table tbody th { color: var(--text-soft); font-weight: 550; width: 30%; }
.compare-table tbody tr:last-child th, .compare-table tbody tr:last-child td { border-bottom: 0; }
.compare-table .muted { color: var(--text-soft); }

/* ---------- Model page ---------- */

.model-head { padding: 40px 0 24px; }
.model-head h1 { margin-bottom: .15em; }
.model-tagline { font-size: 1.15rem; color: var(--text-soft); margin: 0; }

.model-layout {
  display: grid; gap: 44px; align-items: start;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  padding-bottom: 8px;
}
@media (max-width: 900px) { .model-layout { grid-template-columns: 1fr; gap: 32px; } }

.gallery-main {
  margin: 0; background: var(--bg-inset);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.gallery-main img { width: 100%; aspect-ratio: 1 / 1; object-fit: contain; }
.gallery-main figcaption {
  padding: 11px 16px; font-size: .87rem; color: var(--text-soft);
  border-top: 1px solid var(--border); background: var(--bg);
}
.gallery-thumbs {
  display: grid; gap: 8px; margin-top: 10px;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
}
.thumb {
  padding: 0; cursor: pointer; background: var(--bg-inset);
  border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden;
}
.thumb img { width: 100%; aspect-ratio: 1 / 1; object-fit: contain; }
.thumb.is-active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }

.model-side h2 { font-size: 1.3rem; }
.model-side > p { color: var(--text-soft); }
.model-actions { margin: 22px 0 0; }

.download-box {
  margin-top: 24px; padding: 18px;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius);
}
.download-link { font-weight: 600; }
.download-box p { margin: 6px 0 0; font-size: .87rem; color: var(--text-soft); }

.spec-columns { columns: 2 320px; column-gap: 44px; }
.spec-group { break-inside: avoid; margin: 0 0 32px; }
.spec-group h3 {
  font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 6px;
}
.spec-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.spec-table th, .spec-table td {
  text-align: start; padding: 9px 0; border-bottom: 1px solid var(--border); vertical-align: top;
}
.spec-table th { color: var(--text-soft); font-weight: 500; width: 44%; padding-inline-end: 14px; }

.back-link { display: inline-block; margin: 8px 0 56px; font-size: .93rem; }

.empty-state {
  margin: 64px 0; padding: 56px 20px; text-align: center;
  border: 1px dashed var(--border); border-radius: var(--radius); color: var(--text-soft);
}

/* ---------- Content blocks ---------- */

.feature-grid { display: grid; gap: 28px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.feature h3 { margin-bottom: 6px; }
.feature p { color: var(--text-soft); margin: 0; font-size: .95rem; }

.facts, .standards { list-style: none; margin: 0 0 32px; padding: 0; display: grid; gap: 8px; }
.facts li {
  padding: 13px 15px; background: var(--bg-soft);
  border: 1px solid var(--border); border-radius: var(--radius-sm); font-weight: 550;
}
.standards li { font-size: .92rem; color: var(--text-soft); font-variant-numeric: tabular-nums; }

.prose { max-width: 680px; }
.prose p { color: var(--text-soft); }
.prose .lead { font-size: 1.18rem; color: var(--text); }
.prose h2 { margin-top: 1.6em; }

.cta-band { background: var(--accent-soft); border-block: 1px solid var(--border); }
.cta-band .container { padding-block: 56px; }
.cta-band p { color: var(--text-soft); max-width: 540px; }

.two-col {
  display: grid; gap: 52px; align-items: start;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
}
@media (max-width: 840px) { .two-col { grid-template-columns: 1fr; gap: 36px; } }

.contact-form { display: grid; gap: 16px; }
.form-row { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: .83rem; font-weight: 600; color: var(--text-soft); }
.field input, .field select, .field textarea {
  font: inherit; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--text); width: 100%;
}
.field textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: .85rem; color: var(--text-soft); margin: 0; }

.contact-details { margin: 0 0 32px; padding: 0; display: grid; gap: 18px; }
.contact-details dt {
  font-size: .78rem; font-weight: 700; color: var(--text-soft);
  text-transform: uppercase; letter-spacing: .06em;
}
.contact-details dd { margin: 4px 0 0; }

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

.site-footer {
  border-top: 1px solid var(--border); background: var(--bg-soft);
  padding: 40px 0 32px; color: var(--text-soft); font-size: .9rem;
}
.footer-note { max-width: 760px; padding-bottom: 28px; }
.footer-note h2 { font-size: .95rem; color: var(--text); margin-bottom: .4em; }
.footer-note p { margin: 0; font-size: .87rem; }
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 10px 32px; justify-content: space-between;
  padding-top: 22px; border-top: 1px solid var(--border);
}
.site-footer p { margin: 0; }