/* Felder Allen Jewelry — HTML + CSS only.
   Layout idea: a quiet porcelain page, ink type, one champagne-gold accent line; ring drawings carry the color. */
:root {
  --paper: #f5f6f8;
  --surface: #ffffff;
  --ink: #1b2130;
  --muted: #5b6475;
  --line: #dce0e7;
  --accent: #9c7a43;
  --accent-soft: #efe6d6;
  --gold: #c7a467;
  --white-gold: #b9c0cb;
  --rose: #c99a86;
  --stone: #eef3f8;
  --font-display: "Bodoni Moda", "Didot", "Bodoni 72", Georgia, serif;
  --font-body: "Jost", "Futura", "Century Gothic", "Helvetica Neue", Arial, sans-serif;
  --radius: 4px;
  --wrap: 1160px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #11141b; --surface: #181c25; --ink: #eceef2; --muted: #9ea6b5;
    --line: #2a303c; --accent: #d4b47e; --accent-soft: #2a261f; --stone: #dfe7f0;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #11141b; --surface: #181c25; --ink: #eceef2; --muted: #9ea6b5;
  --line: #2a303c; --accent: #d4b47e; --accent-soft: #2a261f; --stone: #dfe7f0;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font-body); font-size: 17px; line-height: 1.6; font-weight: 400;
}
img, svg { max-width: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; line-height: 1.15; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); }
h3 { font-size: 1.3rem; }
p { margin: 0; }
.wrap { width: min(var(--wrap), 100% - 40px); margin-inline: auto; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.eyebrow { font-size: 0.78rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--accent); font-weight: 500; }
.lede { color: var(--muted); max-width: 60ch; font-size: 1.08rem; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border: 1px solid var(--ink); border-radius: var(--radius);
  font: 500 0.82rem/1 var(--font-body); letter-spacing: 0.16em; text-transform: uppercase;
  text-decoration: none; cursor: pointer; transition: background .2s, color .2s;
  background: var(--ink); color: var(--paper);
}
.btn:hover { background: transparent; color: var(--ink); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); }

/* Announcement + header */
.announce { background: var(--ink); color: var(--paper); text-align: center; font-size: 0.8rem; letter-spacing: 0.08em; padding: 8px 16px; }
header.site { position: sticky; top: 0; z-index: 10; background: var(--paper); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 18px; }
.brand { text-decoration: none; display: flex; flex-direction: column; line-height: 1; }
.brand b { font-family: var(--font-display); font-weight: 500; font-size: 1.55rem; letter-spacing: 0.02em; }
.brand span { font-size: 0.66rem; letter-spacing: 0.42em; text-transform: uppercase; color: var(--accent); margin-top: 6px; }
.menu { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; align-items: center; }
.menu a { text-decoration: none; font-size: 0.86rem; letter-spacing: 0.1em; text-transform: uppercase; }
.menu a:hover { color: var(--accent); }
.menu .btn { padding: 11px 18px; color: var(--paper); }
.menu .btn:hover { color: var(--ink); }
.menu-toggle { display: none; cursor: pointer; font-size: 0.82rem; letter-spacing: 0.14em; text-transform: uppercase; border: 1px solid var(--line); padding: 8px 14px; border-radius: var(--radius); }
#nav-open:focus-visible ~ .nav .menu-toggle { outline: 2px solid var(--accent); outline-offset: 3px; }
@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .menu { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 20px 20px; }
  .menu li a:not(.btn) { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .menu .btn { margin-top: 14px; width: 100%; }
  #nav-open:checked ~ .nav .menu { display: flex; }
}

/* Hero */
.hero { padding-block: 64px 72px; border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero-copy { display: grid; gap: 24px; }
.hero-copy h1 em { font-style: italic; color: var(--accent); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-art { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); aspect-ratio: 1 / 0.9; display: grid; place-items: center; position: relative; --metal: var(--gold); }
.hero-art svg { width: 72%; height: auto; }
.hero-art figcaption { position: absolute; left: 20px; bottom: 16px; font-size: 0.78rem; color: var(--muted); letter-spacing: 0.06em; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; border-top: 1px solid var(--line); padding-top: 22px; margin-top: 8px; }
.facts strong { display: block; font-family: var(--font-display); font-size: 1.5rem; font-weight: 500; }
.facts span { font-size: 0.82rem; color: var(--muted); }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } .hero-art { order: -1; aspect-ratio: 16 / 10; } .hero-art svg { width: 46%; } }

/* Sections */
section.block { padding-block: 88px; border-bottom: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; margin-bottom: 40px; }
.section-head > div:not(.filters) { display: grid; gap: 12px; }

/* Shop with CSS-only filters */
.filters { display: flex; flex-wrap: wrap; gap: 10px; }
.filters label {
  cursor: pointer; border: 1px solid var(--line); border-radius: 999px; padding: 8px 18px;
  font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; background: var(--surface);
}
.filters label:hover { border-color: var(--ink); }
#f-all:checked ~ .section-head label[for="f-all"],
#f-eng:checked ~ .section-head label[for="f-eng"],
#f-band:checked ~ .section-head label[for="f-band"],
#f-bridal:checked ~ .section-head label[for="f-bridal"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
#f-all:focus-visible ~ .section-head label[for="f-all"],
#f-eng:focus-visible ~ .section-head label[for="f-eng"],
#f-band:focus-visible ~ .section-head label[for="f-band"],
#f-bridal:focus-visible ~ .section-head label[for="f-bridal"] { outline: 2px solid var(--accent); outline-offset: 3px; }
#f-eng:checked ~ .grid .card:not(.engagement),
#f-band:checked ~ .grid .card:not(.band),
#f-bridal:checked ~ .grid .card:not(.bridal) { display: none; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
@media (max-width: 1020px) { .grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px) { .grid { grid-template-columns: repeat(2, 1fr); gap: 14px; } }
@media (max-width: 420px) { .grid { grid-template-columns: 1fr; } }
.card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .2s; }
.card:hover { border-color: var(--accent); }
.card .art { aspect-ratio: 1; display: grid; place-items: center; border-bottom: 1px solid var(--line); position: relative; }
.card .art svg { width: 62%; height: auto; transition: transform .35s ease; }
.card:hover .art svg { transform: scale(1.05); }
.card .tag { position: absolute; top: 12px; left: 12px; font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; background: var(--accent-soft); color: var(--accent); padding: 4px 9px; border-radius: 999px; }
.card .body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card .specs { font-size: 0.84rem; color: var(--muted); }
.card .row { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-top: auto; padding-top: 12px; flex-wrap: wrap; }
.price { font-variant-numeric: tabular-nums; font-weight: 500; }
.card .row a { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none; border-bottom: 1px solid var(--accent); padding-bottom: 2px; }
.gold { --metal: var(--gold); }
.white { --metal: var(--white-gold); }
.rose { --metal: var(--rose); }

/* Custom process */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--ink); }
.step { padding: 26px 24px 8px 0; display: grid; gap: 10px; align-content: start; }
.step + .step { padding-left: 24px; border-left: 1px solid var(--line); }
.step .num { font-family: var(--font-display); font-size: 2.4rem; color: var(--accent); line-height: 1; }
.step p { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 860px) { .process { grid-template-columns: 1fr 1fr; } .step:nth-child(3) { border-left: 0; padding-left: 0; } }
@media (max-width: 480px) { .process { grid-template-columns: 1fr; } .step + .step { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); } }

/* Guide: 4Cs + size table */
.guide { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
@media (max-width: 860px) { .guide { grid-template-columns: 1fr; } }
.cs { display: grid; gap: 0; }
.c { display: grid; grid-template-columns: 110px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.c:first-child { border-top: 1px solid var(--line); }
.c b { font-family: var(--font-display); font-weight: 500; font-size: 1.25rem; }
.c p { color: var(--muted); font-size: 0.95rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: 0.95rem; }
th, td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-weight: 500; font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--accent-soft); }
.note { font-size: 0.86rem; color: var(--muted); margin-top: 14px; }

/* About */
.about { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.about blockquote { margin: 0; font-family: var(--font-display); font-size: clamp(1.5rem, 2.6vw, 2.1rem); line-height: 1.3; font-style: italic; border-left: 2px solid var(--accent); padding-left: 24px; }
.about .text { display: grid; gap: 16px; color: var(--muted); }
.about .text h2 { color: var(--ink); }
@media (max-width: 860px) { .about { grid-template-columns: 1fr; } }

/* FAQ */
.faq { max-width: 820px; display: grid; }
details { border-bottom: 1px solid var(--line); }
details:first-child { border-top: 1px solid var(--line); }
summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; position: relative; font-size: 1.08rem; font-weight: 500; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font-size: 1.5rem; font-weight: 300; color: var(--accent); }
details[open] summary::after { content: "\2212"; }
details p { padding: 0 40px 22px 0; color: var(--muted); max-width: 68ch; }

/* Contact */
.contact { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 56px; }
@media (max-width: 860px) { .contact { grid-template-columns: 1fr; } }
.contact-info { display: grid; gap: 22px; align-content: start; }
.contact-info dl { margin: 0; display: grid; gap: 14px; }
.contact-info dt { font-size: 0.74rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.contact-info dd { margin: 2px 0 0; }
form.inquiry { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
@media (max-width: 560px) { form.inquiry { grid-template-columns: 1fr; padding: 22px; } }
.field { display: grid; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 0.76rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
input, select, textarea {
  font: inherit; color: var(--ink); background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 14px; width: 100%;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
textarea { min-height: 120px; resize: vertical; }
form.inquiry .btn { justify-self: start; }

/* Footer */
footer.site { padding-block: 48px 36px; font-size: 0.88rem; color: var(--muted); }
.foot { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.foot a { text-decoration: none; }
.foot a:hover { color: var(--accent); }
.legal { border-top: 1px solid var(--line); margin-top: 32px; padding-top: 18px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 0.8rem; }