/* ============================================================
   Aperflu 2275 FFKM O-rings — marketing site stylesheet
   Palette: white background, deep navy text, blue accent, orange CTA
   ============================================================ */
:root {
  --navy: #0d2a4a;
  --ink: #1b2b3a;
  --muted: #5b6b7a;
  --blue: #1256a8;
  --blue-dark: #0c3d7c;
  --accent: #ff6a00;
  --accent-dark: #e05f00;
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --line: #e2e8f0;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(13, 42, 74, .08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

h1, h2, h3 { color: var(--navy); line-height: 1.2; }
h1 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); margin: .35em 0 .5em; }
h2 { font-size: clamp(1.4rem, 2.4vw, 2rem); margin: 0 0 .7em; }
h3 { font-size: 1.1rem; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
a { color: var(--blue); }
a:hover { color: var(--blue-dark); }
img { max-width: 100%; height: auto; display: block; }

.container { width: min(1180px, 92%); margin-inline: auto; }
.section { padding: 3.2rem 0; }
.section-lead { color: var(--muted); max-width: 60ch; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.nav-wrap { display: flex; align-items: center; gap: 1rem; padding: .6rem 0; }
.logo { display: flex; align-items: center; gap: .55rem; text-decoration: none;
  font-weight: 800; font-size: 1.15rem; color: var(--navy); letter-spacing: .02em; }
.logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo em { font-style: normal; color: var(--accent); font-size: .62em;
  letter-spacing: .06em; font-weight: 700; }
.logo img { border-radius: 50%; background: #fff; border: 1px solid var(--line); }
.main-nav { margin-left: auto; display: flex; align-items: center; gap: .2rem; flex-wrap: wrap; }
.main-nav a { text-decoration: none; color: var(--ink); font-weight: 600;
  font-size: .95rem; padding: .45rem .7rem; border-radius: 8px; }
.main-nav a:hover { background: var(--bg-soft); }
.main-nav a.active { color: var(--blue); background: #eaf2fd; }
.cta-nav { background: var(--accent); color: #fff !important; margin-left: .3rem; }
.cta-nav:hover { background: var(--accent-dark); }
.nav-toggle { display: none; margin-left: auto; font-size: 1.4rem; background: none;
  border: 1px solid var(--line); border-radius: 8px; padding: .2rem .6rem; cursor: pointer; }

/* ---------- hero ---------- */
.hero { background: linear-gradient(160deg, #f7faff 0%, #eef4fc 100%);
  border-bottom: 1px solid var(--line); padding: 3.4rem 0; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 2.4rem; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .8rem;
  font-weight: 700; color: var(--blue); margin-bottom: .8rem; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 62ch; }
.hero-ctas { display: flex; gap: .8rem; margin: 1.4rem 0; flex-wrap: wrap; }
.hero-facts { display: flex; gap: 1.6rem; list-style: none; padding: 0; margin: 1.6rem 0 0;
  flex-wrap: wrap; color: var(--muted); font-size: .95rem; }
.hero-facts strong { color: var(--navy); display: block; font-size: 1.15rem; }
.hero-media { margin: 0; text-align: center; }
.hero-media img { background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); margin-inline: auto; }
.hero-media figcaption { color: var(--muted); font-size: .85rem; margin-top: .6rem; }

.btn { display: inline-block; text-decoration: none; font-weight: 700;
  padding: .75rem 1.5rem; border-radius: 999px; transition: .15s ease; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-ghost { border: 2px solid var(--blue); color: var(--blue); }
.btn-ghost:hover { background: var(--blue); color: #fff; }
.btn-ghost.light { border-color: #fff; color: #fff; margin-left: .6rem; }
.btn-ghost.light:hover { background: rgba(255,255,255,.12); }

/* ---------- cards / grids ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.1rem; }
.card { background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.2rem 1.3rem; }
.card:hover { box-shadow: var(--shadow); }

.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1rem; }
.gallery figure { margin: 0; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; }
.gallery img { background: #fff; }
.gallery figcaption { padding: .55rem .7rem; font-size: .85rem; color: var(--muted);
  border-top: 1px solid var(--line); }

.series-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: .9rem; }
.series-card { display: flex; flex-direction: column; gap: .15rem; text-decoration: none;
  color: var(--ink); background: #fff; border: 1px solid var(--line);
  border-left: 4px solid var(--blue); border-radius: 10px; padding: .9rem 1rem; }
.series-card strong { color: var(--navy); }
.series-card span { font-size: .88rem; color: var(--muted); }
.series-card:hover { border-left-color: var(--accent); box-shadow: var(--shadow); }

.app-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.2rem; }
.app-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.app-card img { height: 200px; object-fit: contain; width: 100%; background: #fff;
  border-bottom: 1px solid var(--line); }
.app-card h2 { font-size: 1.15rem; padding: .9rem 1.1rem 0; margin: 0; }
.app-card p { padding: 0 1.1rem 1.1rem; margin: .5rem 0 0; color: var(--muted); font-size: .95rem; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; margin: 1rem 0 1.6rem; }
.data-table { width: 100%; border-collapse: collapse; font-size: .93rem; background: #fff; }
.data-table caption { text-align: left; padding: .7rem .8rem; background: var(--navy);
  color: #fff; border-radius: 10px 10px 0 0; font-size: .92rem; }
.data-table th, .data-table td { border: 1px solid var(--line); padding: .5rem .7rem;
  text-align: left; vertical-align: top; }
.data-table thead th { background: #eaf2fd; color: var(--navy); white-space: nowrap; }
.data-table tbody tr:nth-child(even) { background: #f8fafd; }
.data-table tbody tr:hover { background: #eef4fc; }
.grade-table td { white-space: nowrap; }
.sub-row { background: #f0f4fa !important; color: var(--muted); font-size: .88rem; }
.table-note { color: var(--muted); font-size: .9rem; }
.family-block { margin-bottom: 2rem; }

/* ---------- size chart ---------- */
.chart-tools { display: flex; flex-direction: column; gap: .8rem; margin-bottom: 1rem; }
.size-search { width: 100%; max-width: 460px; padding: .7rem 1rem; font-size: 1rem;
  border: 2px solid var(--line); border-radius: 10px; }
.size-search:focus { outline: none; border-color: var(--blue); }
.cs-tabs { display: flex; flex-wrap: wrap; gap: .5rem; }
.cs-tab { border: 1px solid var(--line); background: #fff; border-radius: 999px;
  padding: .35rem .9rem; font-weight: 600; color: var(--ink); cursor: pointer; }
.cs-tab.active, .cs-tab:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.chart-note { color: var(--muted); font-size: .9rem; margin: 0; }
.size-table-wrap { max-height: 70vh; overflow-y: auto; border: 1px solid var(--line); border-radius: 10px; }
.size-table thead th { position: sticky; top: 0; z-index: 2; }
.size-table .cs-header td { background: var(--navy); color: #fff; font-weight: 700; }
.size-table .price { font-weight: 700; color: var(--accent-dark); white-space: nowrap; }
.quote-link { font-weight: 600; white-space: nowrap; }

/* ---------- page hero / breadcrumb ---------- */
.page-hero { background: var(--bg-soft); border-bottom: 1px solid var(--line); padding: 2.4rem 0; }
.breadcrumb { font-size: .88rem; color: var(--muted); margin-bottom: .4rem; }
.breadcrumb a { color: var(--blue); text-decoration: none; }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(135deg, var(--navy) 0%, var(--blue-dark) 100%);
  color: #fff; padding: 3rem 0; text-align: center; margin-top: 2rem; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #cdd9ea; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; }
.quote-form { display: flex; flex-direction: column; gap: 1rem; }
.quote-form label { display: flex; flex-direction: column; gap: .3rem; font-weight: 600; color: var(--navy); }
.quote-form input, .quote-form textarea, .form-input { padding: .65rem .8rem; font-size: 1rem;
  border: 1.5px solid var(--line); border-radius: 8px; font-family: inherit; width: 100%; }
.quote-form input:focus, .quote-form textarea:focus, .form-input:focus {
  outline: none; border-color: var(--blue); }
.form-note { font-size: .9rem; color: var(--muted); }
.field-error { color: #c0392b; font-size: .85rem; font-weight: 600; }
.form-success { background: #e7f6ec; border: 1px solid #b6e0c3; color: #16653a;
  border-radius: 10px; padding: .9rem 1.1rem; font-weight: 600; grid-column: 1 / -1; }
.contact-card { background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.4rem; height: fit-content; }
.fact-list { list-style: none; padding: 0; margin: 0 0 1.4rem; }
.fact-list li { padding: .45rem 0; border-bottom: 1px dashed var(--line); color: var(--muted); }
.fact-list strong { color: var(--accent-dark); }

/* ---------- footer ---------- */
.site-footer { background: #0a2238; color: #b9c8da; margin-top: 3rem; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem; padding: 2.6rem 0 1.6rem; }
.footer-grid strong { color: #fff; display: block; margin-bottom: .6rem; }
.footer-grid em { font-style: normal; color: var(--accent); }
.footer-brand { display: flex; align-items: center; gap: .6rem; margin-bottom: .6rem; }
.footer-brand strong { display: flex; flex-direction: column; line-height: 1.05; margin-bottom: 0; font-size: 1.05rem; }
.footer-brand img { border-radius: 50%; }
.footer-grid a { display: block; color: #b9c8da; text-decoration: none; padding: .18rem 0; }
.footer-grid a:hover { color: #fff; }
.footer-contact .contact-line { display: block; padding: .18rem 0; }
.footer-contact .contact-line a { display: inline; padding: 0; }
.footer-legal { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  border-top: 1px solid #16344f; padding: 1rem 0 1.4rem; font-size: .85rem; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .main-nav { display: none; flex-basis: 100%; flex-direction: column; align-items: stretch; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: .7rem .8rem; }
  .cta-nav { margin: .3rem 0 0; text-align: center; }
}