/* ═══════════════════════════════════════════
   Nezu Prime — Shared Stylesheet
   ═══════════════════════════════════════════ */

:root {
  --bg: #fafaf7;
  --bg-elev: #ffffff;
  --bg-tint: #f4f3ee;
  --ink: #1a1a17;
  --ink-soft: #3d3d38;
  --ink-mute: #6b6b62;
  --ink-faint: #9e9e94;
  --line: #e6e5dd;
  --line-soft: #efeee7;
  --accent: #d4471c;
  --accent-deep: #b53a14;
  --accent-soft: rgba(212, 71, 28, 0.08);
  --paper-shadow: 0 1px 2px rgba(26,26,23,0.04), 0 8px 24px rgba(26,26,23,0.04);
  --paper-shadow-lg: 0 2px 4px rgba(26,26,23,0.04), 0 24px 48px rgba(26,26,23,0.08);
  --serif: 'Instrument Serif', 'Times New Roman', serif;
  --sans: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'Geist Mono', ui-monospace, monospace;
  --max-w: 1240px;
  --max-narrow: 880px;
  --nav-h: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  font-weight: 400;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

/* ── Layout ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }
.narrow { max-width: var(--max-narrow); margin: 0 auto; padding: 0 32px; }
section { padding: 120px 0; position: relative; }
@media (max-width: 768px) {
  section { padding: 72px 0; }
  .container, .narrow { padding: 0 20px; }
}

/* ── Typography ── */
h1, h2, h3, h4 { font-family: var(--sans); font-weight: 500; letter-spacing: -0.02em; line-height: 1.08; color: var(--ink); }
h1 { font-family: var(--serif); font-weight: 400; font-size: clamp(2.5rem, 5.5vw, 4.5rem); letter-spacing: -0.025em; line-height: 1; }
h1 em { font-style: italic; color: var(--accent); font-weight: 400; }
h2 { font-family: var(--serif); font-weight: 400; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.02em; line-height: 1.05; }
h2 em { font-style: italic; color: var(--accent); }
h3 { font-size: 1.15rem; font-weight: 500; letter-spacing: -0.01em; }

.eyebrow {
  font-family: var(--mono); font-size: 0.72rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.15em; color: var(--accent);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ''; width: 24px; height: 1px; background: var(--accent); }

.lead { font-size: 1.1rem; color: var(--ink-soft); line-height: 1.6; max-width: 560px; font-weight: 400; }

/* ── Nav ── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
  z-index: 100; height: var(--nav-h);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--serif); font-size: 1.3rem; letter-spacing: -0.01em; color: var(--ink); }
.logo-mark {
  width: 30px; height: 30px; background: var(--ink); border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-style: italic; font-size: 1rem; color: var(--bg); flex-shrink: 0;
}
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links > a { font-size: 0.9rem; color: var(--ink-soft); transition: color 0.2s; font-weight: 450; }
.nav-links > a:hover, .nav-links > a.active { color: var(--ink); }
.nav-links > a.active { color: var(--accent); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 11px 20px; border-radius: 8px; font-family: var(--sans);
  font-size: 0.9rem; font-weight: 500; transition: all 0.18s ease;
  border: 1px solid transparent; white-space: nowrap; letter-spacing: -0.005em; cursor: pointer;
}
.btn-primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-elev); color: var(--ink); border-color: var(--line); }
.btn-secondary:hover { border-color: var(--ink); }
.btn-accent { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.btn-accent:hover { background: var(--accent-deep); border-color: var(--accent-deep); transform: translateY(-1px); }
.btn-arrow::after { content: '→'; font-family: var(--serif); font-style: italic; margin-left: 4px; transition: transform 0.2s; }
.btn-arrow:hover::after { transform: translateX(3px); }
.btn-lg { padding: 14px 26px; font-size: 0.95rem; }

.mobile-toggle { display: none; background: none; border: none; color: var(--ink); padding: 8px; align-items: center; }
@media (max-width: 880px) {
  .nav-links { display: none; }
  .mobile-toggle { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 100%; left: 0; right: 0; background: var(--bg-elev);
    padding: 20px 24px; gap: 16px; border-bottom: 1px solid var(--line);
    box-shadow: var(--paper-shadow); align-items: stretch;
  }
}

/* ── Page header (interior pages) ── */
.page-header {
  padding: calc(var(--nav-h) + 80px) 0 64px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line);
  position: relative; overflow: hidden;
}
.page-header::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle at 85% 20%, rgba(212,71,28,0.05), transparent 45%);
}
.page-header .eyebrow { margin-bottom: 24px; }
.page-header h1 { max-width: 16ch; margin-bottom: 20px; }
.page-header .lead { font-size: 1.15rem; }
.breadcrumb {
  font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--ink-faint); margin-bottom: 28px;
}
.breadcrumb a { color: var(--ink-faint); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 8px; }

/* ── Section headers ── */
.section-head { margin-bottom: 64px; max-width: 720px; }
.section-head.centered { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { margin: 20px 0; }
.section-head .lead { margin-top: 20px; }
.section-head.centered .lead { margin-left: auto; margin-right: auto; }
.section-head.centered .eyebrow { justify-content: center; }

/* ── Trust strip ── */
.trust-strip { padding: 36px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-elev); }
.trust-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.trust-label { font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--ink-faint); }
.trust-items { display: flex; gap: 40px; flex-wrap: wrap; align-items: center; }
.trust-item { display: flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: 0.88rem; font-weight: 450; }
.trust-item svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }

/* ── Cards ── */
.card {
  background: var(--bg-elev); border: 1px solid var(--line);
  border-radius: 16px; padding: 36px; transition: all 0.3s ease;
}
.card:hover { border-color: var(--ink); box-shadow: var(--paper-shadow-lg); transform: translateY(-2px); }

/* ── FAQ ── */
.faq-list { margin-top: 48px; max-width: var(--max-narrow); margin-left: auto; margin-right: auto; }
.faq-item { border-bottom: 1px solid var(--line); padding: 24px 0; }
.faq-q {
  display: flex; justify-content: space-between; align-items: center; cursor: pointer;
  font-family: var(--serif); font-size: 1.2rem; font-weight: 400; color: var(--ink);
  list-style: none; user-select: none; gap: 24px; letter-spacing: -0.01em;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q::after {
  content: ''; width: 16px; height: 16px; flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 3v10M3 8h10' stroke='%23d4471c' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-size: contain; transition: transform 0.3s;
}
.faq-item[open] .faq-q::after { transform: rotate(45deg); }
.faq-a { margin-top: 14px; color: var(--ink-mute); line-height: 1.7; font-size: 0.96rem; max-width: 90%; }

/* ── CTA banner ── */
.cta-section { background: var(--bg-tint); }
.cta-banner {
  background: var(--ink); border-radius: 20px; padding: 72px 48px; text-align: center;
  position: relative; overflow: hidden; color: var(--bg);
}
.cta-banner::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(circle at 15% 30%, rgba(212,71,28,0.25), transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(212,71,28,0.18), transparent 40%);
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { color: var(--bg); margin-bottom: 18px; max-width: 18ch; margin-left: auto; margin-right: auto; }
.cta-banner h2 em { color: var(--accent); }
.cta-banner p { color: rgba(250,250,247,0.7); max-width: 500px; margin: 0 auto 36px; font-size: 1.02rem; }
.cta-banner .btn-primary { background: var(--bg); color: var(--ink); border-color: var(--bg); }
.cta-banner .btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.cta-banner .btn-secondary { background: transparent; color: var(--bg); border-color: rgba(250,250,247,0.2); }
.cta-banner .btn-secondary:hover { border-color: var(--bg); }
@media (max-width: 600px) { .cta-banner { padding: 48px 24px; } }

/* ── Footer ── */
footer { background: var(--bg-elev); border-top: 1px solid var(--line); padding: 80px 0 36px; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 56px; border-bottom: 1px solid var(--line); }
@media (max-width: 880px) { .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; } }
@media (max-width: 500px) { .footer-top { grid-template-columns: 1fr; gap: 32px; } }
.footer-col h4 { font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-faint); margin-bottom: 18px; font-weight: 500; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--ink-soft); font-size: 0.9rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p { color: var(--ink-mute); font-size: 0.9rem; margin-bottom: 22px; max-width: 320px; line-height: 1.55; }
.footer-address { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint); line-height: 1.7; }
.footer-bottom { padding-top: 28px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; color: var(--ink-faint); font-size: 0.82rem; }
.footer-bottom .mono { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.05em; }

/* ── Legal / article content ── */
.prose { max-width: var(--max-narrow); }
.prose h2 { font-family: var(--serif); font-size: 1.5rem; margin: 40px 0 14px; font-weight: 400; letter-spacing: -0.01em; }
.prose h3 { font-family: var(--sans); font-size: 1rem; margin: 24px 0 10px; color: var(--ink); font-weight: 500; }
.prose p, .prose li { color: var(--ink-soft); margin-bottom: 12px; font-size: 0.98rem; line-height: 1.7; }
.prose ul { padding-left: 20px; margin-bottom: 14px; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--ink); font-weight: 600; }

/* ── Reveal animation ── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ═══════════════════════════════════════════
   Product detail pages
   ═══════════════════════════════════════════ */
.pd-hero { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .pd-hero { grid-template-columns: 1fr; gap: 40px; } }
.pd-tag { font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); margin-bottom: 18px; display: block; }
.pd-hero h1 { margin-bottom: 18px; }
.pd-price-row { display: flex; align-items: baseline; gap: 14px; margin: 28px 0; padding-top: 24px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.pd-price { font-family: var(--serif); font-size: 2.6rem; line-height: 1; }
.pd-price .currency { font-size: 1.1rem; opacity: 0.5; vertical-align: super; }
.pd-price .period { font-family: var(--sans); font-size: 0.9rem; color: var(--ink-mute); margin-left: 4px; }
.pd-price-note { font-family: var(--mono); font-size: 0.72rem; color: var(--ink-faint); letter-spacing: 0.05em; text-transform: uppercase; }
.pd-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.pd-visual { background: var(--ink); border-radius: 18px; padding: 40px; min-height: 360px; position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: center; }
.pd-visual::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(circle at 25% 30%, rgba(212,71,28,0.35), transparent 55%); }
.pd-visual > * { position: relative; z-index: 1; }
.pd-mock { background: var(--bg-elev); border-radius: 12px; padding: 22px; box-shadow: var(--paper-shadow-lg); }
.pd-mock-label { font-family: var(--mono); font-size: 0.64rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-faint); margin-bottom: 12px; }
.pd-mock-title { font-family: var(--serif); font-size: 1.3rem; margin-bottom: 14px; }
.pd-mock-row { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px solid var(--line-soft); font-size: 0.82rem; color: var(--ink-soft); }
.pd-mock-row:last-child { border-bottom: none; }
.pd-mock-row .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); display: inline-block; margin-right: 8px; }
.pd-mock-bars { display: flex; gap: 5px; align-items: flex-end; height: 56px; margin-top: 16px; }
.pd-mock-bars .bar { flex: 1; background: var(--ink); opacity: 0.15; border-radius: 2px; }
.pd-mock-bars .bar.on { opacity: 1; background: var(--accent); }

.pd-section-title { font-family: var(--serif); font-size: 1.8rem; font-weight: 400; margin-bottom: 28px; letter-spacing: -0.01em; }
.pd-includes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
@media (max-width: 700px) { .pd-includes { grid-template-columns: 1fr; } }
.pd-include { display: flex; gap: 12px; align-items: flex-start; padding: 18px; background: var(--bg-elev); border: 1px solid var(--line); border-radius: 12px; }
.pd-include svg { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; margin-top: 2px; }
.pd-include strong { display: block; font-size: 0.95rem; color: var(--ink); margin-bottom: 3px; font-weight: 500; }
.pd-include span { font-size: 0.85rem; color: var(--ink-mute); line-height: 1.5; }

.pd-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
@media (max-width: 800px) { .pd-features { grid-template-columns: 1fr; } }
.pd-feature { padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-elev); }
.pd-feature .n { font-family: var(--mono); font-size: 0.68rem; color: var(--ink-faint); letter-spacing: 0.1em; margin-bottom: 14px; }
.pd-feature h3 { font-family: var(--serif); font-weight: 400; font-size: 1.2rem; margin-bottom: 8px; }
.pd-feature p { font-size: 0.88rem; color: var(--ink-mute); line-height: 1.55; }

.pd-related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 800px) { .pd-related { grid-template-columns: 1fr; } }
.pd-rel-card { background: var(--bg-elev); border: 1px solid var(--line); border-radius: 12px; padding: 24px; transition: all 0.25s ease; }
.pd-rel-card:hover { border-color: var(--ink); transform: translateY(-2px); box-shadow: var(--paper-shadow); }
.pd-rel-card .pd-tag { margin-bottom: 10px; }
.pd-rel-card h3 { font-family: var(--serif); font-weight: 400; font-size: 1.25rem; margin-bottom: 6px; }
.pd-rel-card p { font-size: 0.84rem; color: var(--ink-mute); margin-bottom: 14px; line-height: 1.5; }
.pd-rel-card .rel-foot { display: flex; justify-content: space-between; align-items: center; padding-top: 14px; border-top: 1px solid var(--line-soft); }
.pd-rel-card .rel-price { font-family: var(--serif); font-size: 1.2rem; }
.pd-rel-card .rel-link { font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }