/* ==========================================================================
   VESPER — Design System
   Monochrome premium digital-goods store
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --black: #0a0a0a;
  --bg: #0a0a0a;
  --bg-elevated: #111214;
  --bg-card: #131416;
  --border: #232427;
  --border-soft: #1a1b1d;
  --white: #f5f5f5;
  --text: #f5f5f5;
  --text-dim: #9a9ba0;
  --text-faint: #5f6165;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --max-width: 1180px;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- Utility text ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.price-tag {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--white);
}

.price-tag::before { content: "[ "; color: var(--text-faint); }
.price-tag::after { content: " ]"; color: var(--text-faint); }

/* ---------- Navbar ---------- */
.navbar-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 20px 0;
}

.navbar {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(17, 18, 20, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 12px 12px 12px 22px;
}

.nav-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 40px;
}

.nav-logo-img {
  height: 32px;
  width: auto;
  display: block;
}

.nav-logo-text {
  font-family: var(--font-display);
  font-size: 22px;
  font-style: italic;
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a:hover, .nav-links a.active { color: var(--white); }

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--white);
}

.nav-actions { display: flex; align-items: center; gap: 10px; }

.nav-search-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim);
  transition: all 0.2s ease;
}
.nav-search-btn:hover { color: var(--white); border-color: var(--text-faint); }

.nav-cta {
  background: var(--white);
  color: var(--black);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.nav-cta:hover { opacity: 0.85; transform: translateY(-1px); }

.nav-burger {
  display: none;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  align-items: center; justify-content: center;
  color: var(--white);
}

.nav-mobile-panel {
  display: none;
  flex-direction: column;
  gap: 4px;
  max-width: var(--max-width);
  margin: 8px auto 0;
  background: rgba(17, 18, 20, 0.95);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  backdrop-filter: blur(16px);
}
.nav-mobile-panel.open { display: flex; }
.nav-mobile-panel a {
  padding: 12px 14px;
  font-size: 15px;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
}
.nav-mobile-panel a:hover { background: var(--bg-card); color: var(--white); }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 15px 28px;
  border-radius: var(--radius-pill);
  transition: opacity 0.2s ease, transform 0.2s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary { background: var(--white); color: var(--black); }
.btn-primary:hover { opacity: 0.86; transform: translateY(-2px); }

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--text-dim); background: var(--bg-card); }

.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero .eyebrow { display: block; margin-bottom: 22px; }

.hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  max-width: 900px;
  margin: 0 auto 24px;
}

.hero h1 em { font-style: italic; color: var(--text-dim); }

.hero .sub {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 480px;
  margin: 0 auto 40px;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-strip {
  display: flex;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--border-soft);
}
.hero-strip .stat { text-align: center; }
.hero-strip .stat b {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  font-weight: 500;
}

/* ---------- Section header ---------- */
.section {
  padding: 70px 0;
  border-top: 1px solid var(--border-soft);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.01em;
}

.section-head .see-all {
  font-size: 14px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.section-head .see-all:hover { color: var(--white); border-color: var(--white); }

/* ---------- Product grid & card ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

@media (max-width: 1000px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-4px); border-color: var(--text-faint); }

.card-cover {
  aspect-ratio: 4/3;
  background: linear-gradient(160deg, #1a1b1d, #0d0e10);
  position: relative;
  display: flex; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--border);
}
.card-cover .mono-mark {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.08em;
}
.card-cat {
  position: absolute;
  top: 12px; left: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: rgba(10,10,10,0.7);
  border: 1px solid var(--border);
  padding: 5px 10px;
  border-radius: var(--radius-pill);
}

.card-body {
  padding: 18px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.card-body h3 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-body p {
  font-size: 13.5px;
  color: var(--text-dim);
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.card-footer .price-tag { font-size: 13px; }

.card-btn {
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
}
.card-btn:hover { background: var(--white); color: var(--black); }

/* ---------- Category cards ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
@media (max-width: 1000px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cat-grid { grid-template-columns: 1fr; } }

.cat-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px 20px;
  background: var(--bg-card);
  transition: all 0.25s ease;
}
.cat-card:hover { border-color: var(--text-faint); transform: translateY(-3px); }
.cat-card .eyebrow { margin-bottom: 14px; }
.cat-card h3 { font-family: var(--font-display); font-size: 24px; font-weight: 400; margin-bottom: 6px; }
.cat-card p { font-size: 13px; color: var(--text-dim); }

/* ---------- Trust / feature strip ---------- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
@media (max-width: 860px) { .trust-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .trust-grid { grid-template-columns: 1fr; } }

.trust-item {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 22px;
}
.trust-item .num { font-family: var(--font-mono); color: var(--text-faint); font-size: 12px; display:block; margin-bottom: 12px; }
.trust-item h4 { font-size: 15px; margin-bottom: 6px; font-weight: 600; }
.trust-item p { font-size: 13px; color: var(--text-dim); }

/* ---------- Brand story ---------- */
.story {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
  align-items: center;
}
@media (max-width: 800px) { .story { grid-template-columns: 1fr; } }
.story h2 { font-family: var(--font-display); font-weight: 400; font-size: clamp(28px,4vw,38px); line-height: 1.15; }
.story p { color: var(--text-dim); font-size: 15px; margin-top: 18px; max-width: 480px; }

/* ---------- FAQ accordion ---------- */
.faq-list { display: flex; flex-direction: column; border-top: 1px solid var(--border-soft); }
.faq-item { border-bottom: 1px solid var(--border-soft); }
.faq-q {
  width: 100%;
  background: none; border: none; color: var(--white);
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 4px;
  font-size: 16px; font-weight: 500;
  text-align: left;
}
.faq-q .plus { font-family: var(--font-mono); color: var(--text-faint); font-size: 18px; transition: transform 0.25s ease; }
.faq-item.open .faq-q .plus { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-a p { padding: 0 4px 22px; color: var(--text-dim); font-size: 14.5px; max-width: 640px; }
.faq-item.open .faq-a { max-height: 400px; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border-soft);
  padding: 60px 0 30px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}
.footer-brand { max-width: 320px; }
.footer-logo-img { height: 30px; width: auto; display: block; }
.footer-brand .nav-logo-link { margin-bottom: 14px; }
.footer-brand p { color: var(--text-dim); font-size: 13.5px; }
.footer-cols { display: flex; gap: 60px; flex-wrap: wrap; }
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 16px;
}
.footer-col a { display: block; font-size: 14px; color: var(--text-dim); margin-bottom: 12px; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 26px;
  border-top: 1px solid var(--border-soft);
  font-size: 12.5px;
  color: var(--text-faint);
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  padding: 28px 0 0;
}
.breadcrumb a { color: var(--text-dim); }
.breadcrumb a:hover { color: var(--white); }

/* ---------- Page hero (non-home) ---------- */
.page-hero { padding: 40px 0 50px; }
.page-hero .eyebrow { display: block; margin-bottom: 16px; }
.page-hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(36px, 5.5vw, 58px);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.page-hero p { color: var(--text-dim); font-size: 16px; max-width: 560px; }

/* ---------- Filters bar (products page) ---------- */
.filters-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  padding: 24px 0 40px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 36px;
}
.search-input-wrap {
  flex: 1;
  min-width: 220px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 12px 18px;
}
.search-input-wrap input {
  background: none; border: none; outline: none;
  color: var(--white); font-size: 14px; width: 100%;
  font-family: var(--font-body);
}
.search-input-wrap input::placeholder { color: var(--text-faint); }
.search-input-wrap svg { color: var(--text-faint); flex-shrink: 0; }

.select-wrap select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--white);
  font-size: 13.5px;
  font-family: var(--font-body);
  padding: 12px 16px;
  border-radius: var(--radius-pill);
  outline: none;
  appearance: none;
  cursor: pointer;
}

.chip-row { display: flex; gap: 8px; flex-wrap: wrap; padding-bottom: 30px; }
.chip {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
  background: transparent;
}
.chip:hover { border-color: var(--text-faint); color: var(--white); }
.chip.active { background: var(--white); color: var(--black); border-color: var(--white); }

.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-dim);
}
.empty-state .eyebrow { display: block; margin-bottom: 14px; }

/* ---------- Product page ---------- */
.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  padding: 40px 0 70px;
  align-items: start;
}
@media (max-width: 860px) { .product-hero { grid-template-columns: 1fr; gap: 30px; padding-top: 20px; } }

.product-cover {
  aspect-ratio: 4/3;
  background: linear-gradient(160deg, #1a1b1d, #0d0e10);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  position: sticky;
  top: 100px;
}
@media (max-width: 860px) { .product-cover { position: static; } }
.product-cover .mono-mark { font-family: var(--font-mono); font-size: 13px; color: var(--text-faint); }

.product-info .eyebrow { margin-bottom: 16px; display:block; }
.product-info h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(32px, 4.4vw, 46px);
  line-height: 1.06;
  margin-bottom: 16px;
}
.product-info .short-desc { color: var(--text-dim); font-size: 15.5px; margin-bottom: 26px; max-width: 460px; }

.product-price-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 26px;
}
.product-price-row .price-tag { font-size: 22px; }

.product-buy-box {
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 22px;
  margin-bottom: 20px;
}
.product-buy-box .btn { margin-bottom: 14px; }
.trust-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.trust-line:last-child { margin-bottom: 0; }
.trust-line svg { color: var(--text-faint); flex-shrink: 0; }

.redirect-note {
  font-size: 12px;
  color: var(--text-faint);
  text-align: center;
  margin-top: 6px;
}

/* ---------- Included list ---------- */
.included-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
@media (max-width: 560px) { .included-grid { grid-template-columns: 1fr; } }
.included-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 14px;
}
.included-item .check { color: var(--white); font-family: var(--font-mono); flex-shrink: 0; }

/* ---------- Long description / problem ---------- */
.prose { max-width: 720px; }
.prose p { color: var(--text-dim); font-size: 15.5px; margin-bottom: 18px; }
.prose h3 { font-family: var(--font-display); font-weight: 400; font-size: 24px; margin: 30px 0 14px; }

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 860px) { .problem-grid { grid-template-columns: 1fr; } }
.problem-item {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 20px;
}
.problem-item .eyebrow { margin-bottom: 10px; }
.problem-item p { font-size: 14px; color: var(--text-dim); }

/* ---------- Related strip near footer ---------- */
.related-strip-item {
  display: flex;
  align-items: center;
  gap: 18px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 12px;
  transition: border-color 0.2s ease;
}
.related-strip-item:hover { border-color: var(--text-faint); }
.related-strip-cover {
  width: 72px; height: 72px;
  border-radius: var(--radius-sm);
  background: linear-gradient(160deg, #1a1b1d, #0d0e10);
  border: 1px solid var(--border);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.related-strip-cover .mono-mark { font-family: var(--font-mono); font-size: 9px; color: var(--text-faint); }
.related-strip-text { flex: 1; min-width: 0; }
.related-strip-text h4 { font-size: 15px; font-weight: 600; margin-bottom: 3px; }
.related-strip-text p { font-size: 13px; color: var(--text-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- Forms (contact) ---------- */
.form-field { margin-bottom: 20px; }
.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 10px;
}
.form-field input, .form-field textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 14.5px;
  outline: none;
  transition: border-color 0.2s ease;
}
.form-field input:focus, .form-field textarea:focus { border-color: var(--text-dim); }
.form-field textarea { resize: vertical; min-height: 140px; }

/* ---------- Legal pages ---------- */
.legal-body h2 { font-family: var(--font-display); font-weight: 400; font-size: 24px; margin: 34px 0 12px; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body p { color: var(--text-dim); font-size: 14.5px; margin-bottom: 14px; max-width: 720px; }
.legal-body ul { margin: 0 0 14px 0; }
.legal-body li { color: var(--text-dim); font-size: 14.5px; margin-bottom: 8px; padding-left: 18px; position: relative; max-width: 700px; }
.legal-body li::before { content: "—"; position: absolute; left: 0; color: var(--text-faint); }

/* ---------- Keyboard focus visibility ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--text-dim);
  outline-offset: 2px;
}

/* ---------- Toast (checkout redirect notice) ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--white);
  color: var(--black);
  font-size: 13.5px;
  font-weight: 500;
  padding: 14px 22px;
  border-radius: var(--radius-pill);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 999;
  white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }