/* ============================================
   HeadphonesMatch — Dark editorial design
   Inspired by RTINGS / SoundGuys / Wirecutter
   ============================================ */

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

:root {
  /* Surfaces */
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --bg-elevated-2: #1c2230;
  --bg-strip: #0a0d12;

  /* Text */
  --text: #f5f1e8;
  --text-soft: #b8b3a3;
  --text-muted: #8a8478;
  --text-dim: #4a4640;

  /* Borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.05);

  /* Accent — amber */
  --accent: #f59e0b;
  --accent-soft: rgba(245, 158, 11, 0.1);
  --accent-soft-2: rgba(245, 158, 11, 0.05);
  --accent-border: rgba(245, 158, 11, 0.3);
  --accent-border-strong: rgba(245, 158, 11, 0.5);
  --accent-text-on: #0d1117;

  /* Sizes */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --max-width: 1100px;
}

html, body {
  height: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv11', 'ss01';
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
}

/* ---------- Site navigation ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
}

.nav-mark {
  width: 22px;
  height: 22px;
  background: var(--accent);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-text-on);
  flex-shrink: 0;
}

.nav-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-soft);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.nav-link-accent {
  color: var(--accent);
}

.nav-link-accent:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

/* Mobile hamburger button — hidden on desktop, shown under 700px */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 38px;
  height: 38px;
  padding: 8px;
  background: transparent;
  border: 0.5px solid var(--accent-border, rgba(255,255,255,0.12));
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-left: auto;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text, #fff);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-caret {
  font-size: 9px;
  opacity: 0.7;
  transition: transform 0.2s ease;
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown:hover .nav-caret,
.nav-dropdown:focus-within .nav-caret {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--bg-elevated);
  border: 0.5px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 8px;
  min-width: 240px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text);
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  transition: background 0.12s ease, color 0.12s ease;
}

.nav-dropdown-menu a:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

/* Mega menu (multi-column) */
.nav-mega {
  display: grid;
  grid-template-columns: repeat(4, 180px);
  gap: 4px 16px;
  padding: 18px;
  min-width: 760px;
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
}

.nav-mega.nav-mega-single {
  grid-template-columns: repeat(2, 240px);
  min-width: 520px;
}

.nav-dropdown:hover .nav-mega,
.nav-dropdown:focus-within .nav-mega {
  transform: translateX(-50%) translateY(0);
}

.mega-col {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.mega-heading {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0 12px 8px;
  margin-bottom: 4px;
  border-bottom: 0.5px solid var(--border);
}

.soon {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.nav-cta {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-text-on);
  background: var(--accent);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  transition: filter 0.15s ease, transform 0.15s ease;
  flex-shrink: 0;
}

.nav-cta:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

/* ---------- Container ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px 80px;
}

/* ---------- Section labels ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.label-mark {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.section-title {
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.section-sub {
  font-size: 14px;
  color: var(--text-soft);
  margin-top: 6px;
}

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 80px 0 64px;
  max-width: 760px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 22px;
}

.hero-title {
  font-size: clamp(36px, 5vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
}

.hero-accent {
  color: var(--accent);
}

.hero-sub {
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.6;
  color: var(--text-soft);
  max-width: 580px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  text-decoration: none;
  border: 0.5px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text-on);
}

.btn-primary:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--text-soft);
}

/* ---------- Matcher ---------- */
.matcher {
  background: var(--bg-elevated);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  margin-bottom: 56px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 20px 0;
}

.chip {
  background: rgba(255, 255, 255, 0.03);
  border: 0.5px solid var(--border-strong);
  color: var(--text-soft);
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

.chip:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-color: var(--text-muted);
}

.chip.active {
  background: var(--accent-soft);
  border-color: var(--accent-border);
  color: var(--accent);
}

.field-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

#prefs {
  width: 100%;
  min-height: 110px;
  resize: vertical;
  background: var(--bg);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  line-height: 1.55;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

#prefs::placeholder {
  color: var(--text-muted);
}

#prefs:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.matcher-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.hint {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- Results ---------- */
.results {
  margin-bottom: 64px;
  scroll-margin-top: 80px;
}

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

.results-meta {
  font-size: 13px;
  color: var(--text-soft);
}

.results-meta.link {
  color: var(--accent);
  cursor: pointer;
  font-weight: 500;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}

/* ---------- Result cards ---------- */
.card {
  background: var(--bg-elevated);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
  animation: cardIn 0.4s ease both;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.card-header {
  padding: 11px 18px;
  border-bottom: 0.5px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.02);
}

.card-header.is-top {
  background: var(--accent-soft);
  border-bottom-color: var(--accent-border);
}

.rank-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.is-top .rank-label {
  color: var(--accent);
}

.score {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  font-feature-settings: 'tnum';
}

.score-max {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 500;
}

.card-body {
  padding: 18px;
}

.card-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  letter-spacing: -0.005em;
}

.card-tag {
  font-size: 12.5px;
  color: var(--text-soft);
  margin-bottom: 14px;
}

.card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 0.5px solid var(--border);
  color: var(--text-soft);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
}

.badge svg {
  width: 10px;
  height: 10px;
}

.card-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  margin-bottom: 14px;
}

.stat {
  background: rgba(255, 255, 255, 0.02);
  border: 0.5px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

.stat-label {
  font-size: 9.5px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.stat-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.why {
  background: var(--accent-soft-2);
  border: 0.5px solid var(--accent-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 14px;
}

.why-label {
  font-size: 9.5px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.why-text {
  font-size: 12.5px;
  color: var(--text-soft);
  line-height: 1.5;
}

.buy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--accent);
  color: var(--accent-text-on);
  padding: 11px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: filter 0.15s ease, transform 0.15s ease;
}

.buy-btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.buy-arrow {
  transition: transform 0.15s ease;
}

.buy-btn:hover .buy-arrow {
  transform: translateX(3px);
}

/* ---------- Tips ---------- */
.tips {
  margin-top: 28px;
  background: var(--bg-elevated);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.tips ul {
  list-style: none;
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.tips li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.55;
}

.tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- Categories ---------- */
.categories {
  margin-bottom: 64px;
  scroll-margin-top: 80px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.category-card {
  background: var(--bg-elevated);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  cursor: pointer;
}

.category-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  background: var(--bg-elevated-2);
}

.category-featured {
  background: linear-gradient(180deg, var(--accent-soft), var(--accent-soft-2));
  border-color: var(--accent-border);
}

.category-featured:hover {
  border-color: var(--accent-border-strong);
  background: linear-gradient(180deg, var(--accent-soft), var(--accent-soft));
}

.cat-icon {
  color: var(--accent);
  margin-bottom: 12px;
  display: inline-flex;
}

.category-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  letter-spacing: -0.005em;
}

.category-card p {
  font-size: 12.5px;
  color: var(--text-soft);
  line-height: 1.45;
  margin-bottom: 12px;
}

.cat-count {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

.category-featured .cat-count {
  color: var(--accent);
  font-weight: 600;
}

.cat-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--accent);
  color: var(--accent-text-on);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 3px 7px;
  border-radius: 3px;
  text-transform: uppercase;
}

/* ---------- About strip ---------- */
.about-strip {
  background: var(--bg-elevated);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  margin-bottom: 56px;
  scroll-margin-top: 80px;
}

.about-content {
  max-width: 720px;
}

.about-content p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
  margin-top: 16px;
}

/* ---------- Disclosure & footer ---------- */
.disclosure {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.footer {
  border-top: 0.5px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.footer-meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* ---------- Animations ---------- */
@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav-mega {
    grid-template-columns: repeat(2, 200px);
    min-width: 440px;
  }
  .nav-mega.nav-mega-single {
    grid-template-columns: 1fr;
    min-width: 280px;
  }
}

@media (max-width: 700px) {
  .nav-inner {
    padding: 12px 18px;
    gap: 12px;
    position: relative;
    flex-wrap: wrap;
  }
  .nav-hamburger {
    display: flex;
  }
  .nav-links {
    display: none;
    order: 3;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    margin-top: 8px;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links .nav-link,
  .nav-links > .nav-dropdown {
    width: 100%;
    padding: 12px 4px;
    border-top: 0.5px solid var(--border, rgba(255,255,255,0.08));
  }
  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    background: transparent;
    padding-left: 12px;
    min-width: 0;
    display: none;
    left: auto;
    transform: none;
  }
  .nav-dropdown:hover .nav-dropdown-menu {
    display: none;
  }
  .nav-dropdown.open .nav-dropdown-menu {
    display: block;
  }
  .nav-mega,
  .nav-mega.nav-mega-single {
    grid-template-columns: 1fr;
    min-width: 0;
    width: 100%;
    left: auto;
    transform: none;
    padding: 4px 0;
  }
  .nav-dropdown:hover .nav-mega,
  .nav-dropdown.open .nav-mega {
    transform: none;
  }
  .mega-col {
    padding: 8px 0;
  }
  .nav-dropdown-toggle {
    width: 100%;
    text-align: left;
    justify-content: space-between;
  }
  .container {
    padding: 0 18px 60px;
  }
  .hero {
    padding: 50px 0 40px;
  }
  .matcher {
    padding: 24px 20px;
    border-radius: var(--radius-lg);
  }
  .about-strip {
    padding: 28px 22px;
  }
  .matcher-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .matcher-actions .btn {
    width: 100%;
  }
  .hint {
    text-align: center;
  }
}

/* ---------- Site-wide footer (added in launch prep) ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.15);
  margin-top: 80px;
  padding: 48px 24px 32px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 48px;
  align-items: start;
}

.site-footer .footer-brand {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.site-footer .footer-brand .nav-name {
  display: block;
  font-size: 18px;
  margin-bottom: 8px;
}

.footer-tag {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 400;
  margin: 0;
  line-height: 1.5;
  max-width: 280px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-legal {
  text-align: right;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-legal p {
  margin: 0 0 6px;
}

.footer-fineprint {
  font-style: italic;
  opacity: 0.8;
}

@media (max-width: 760px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }
  .footer-links {
    align-items: center;
  }
  .footer-legal {
    text-align: center;
  }
  .footer-tag {
    margin: 0 auto;
  }
}