/* ============================================================
   Audio Dynamics — audiodynamicsglobal.com
   Single stylesheet. No framework.
   ============================================================ */

/* ---------- Fonts ---------- */

@font-face {
  font-family: 'Aller';
  src: url('../fonts/Aller_Lt.ttf') format('truetype');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Aller';
  src: url('../fonts/Aller_Rg.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Aller';
  src: url('../fonts/Aller_It.ttf') format('truetype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Aller';
  src: url('../fonts/Aller_Bd.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- Design tokens ---------- */

:root {
  /* Base is matched to the product photography, whose backgrounds
     measure RGB 0–13. Images blend with no visible edge. */
  --bg:            #0B0B0C;
  --bg-raised:     #131315;
  --bg-inset:      #080809;

  --ink:           #EDEDEA;
  --ink-soft:      #A3A39D;
  --ink-faint:     #6E6E69;

  --accent:        #C4A35A;
  --accent-dim:    #8A7340;

  --rule:          rgba(255, 255, 255, 0.09);
  --rule-strong:   rgba(255, 255, 255, 0.18);

  --font:          'Aller', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  --measure:       62ch;
  --gutter:        clamp(1.5rem, 5vw, 5rem);
  --section:       clamp(5rem, 12vw, 10rem);
  --maxw:          1280px;

  --ease:          cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-weight: 300;
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0 0 1.25em; max-width: var(--measure); }
p:last-child { margin-bottom: 0; }

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

/* ---------- Layout ---------- */

.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section); }
.section--tight { padding-block: clamp(3.5rem, 8vw, 6rem); }
.section--inset { background: var(--bg-inset); }
.section--raised { background: var(--bg-raised); }

.rule-top { border-top: 1px solid var(--rule); }

/* ---------- Type scale ---------- */

.display {
  font-size: clamp(2.6rem, 1.4rem + 5.4vw, 5.75rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.h1 { font-size: clamp(2.1rem, 1.4rem + 3vw, 3.75rem); letter-spacing: -0.025em; }
.h2 { font-size: clamp(1.7rem, 1.25rem + 2vw, 2.75rem); letter-spacing: -0.02em; }
.h3 { font-size: clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem); letter-spacing: -0.01em; }

.lede {
  font-size: clamp(1.125rem, 1.02rem + 0.5vw, 1.375rem);
  line-height: 1.6;
  color: var(--ink-soft);
}

.eyebrow {
  display: block;
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.75rem;
}

.eyebrow--muted { color: var(--ink-faint); }

.dim { color: var(--ink-soft); }

/* A short gold hairline used to open a block. */
.tick {
  width: 3.5rem;
  height: 1px;
  background: var(--accent);
  border: 0;
  margin: 0 0 2rem;
}

/* ---------- Links & buttons ---------- */

.link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55em;
  color: var(--ink);
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  padding-bottom: 0.35em;
  border-bottom: 1px solid var(--rule-strong);
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease);
}
.link::after {
  content: '→';
  color: var(--accent);
  transition: transform 0.35s var(--ease);
}
.link:hover { color: #fff; border-color: var(--accent); }
.link:hover::after { transform: translateX(0.3em); }

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

.btn {
  display: inline-block;
  padding: 1.05em 2.4em;
  border: 1px solid var(--rule-strong);
  color: var(--ink);
  font-size: 0.875rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  background: transparent;
  cursor: pointer;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), color 0.35s var(--ease);
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: #0B0B0C; }

.btn--solid { background: var(--accent); border-color: var(--accent); color: #0B0B0C; }
.btn--solid:hover { background: #d4b673; border-color: #d4b673; }

/* ---------- Header ---------- */

.site-head {
  position: absolute;
  inset: 0 0 auto;
  z-index: 50;
  padding-block: clamp(1.5rem, 3vw, 2.25rem);
}
.site-head--solid {
  position: sticky;
  top: 0;
  background: rgba(11, 11, 12, 0.88);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--rule);
}

.head-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brandmark { display: block; flex: none; }
.brandmark img { width: clamp(140px, 16vw, 186px); }

.nav { display: flex; align-items: center; gap: clamp(1.5rem, 3vw, 2.75rem); }

.nav a {
  font-size: 0.8125rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-block: 0.35em;
  border-bottom: 1px solid transparent;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.nav a:hover, .nav a[aria-current='page'] {
  color: var(--ink);
  border-color: var(--accent);
}
.nav a.nav-cta { color: var(--accent); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: none; border: 0; cursor: pointer; padding: 0;
}
.nav-toggle span {
  display: block; width: 22px; height: 1px;
  background: var(--ink); position: relative;
  transition: background 0.3s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: ''; position: absolute; left: 0;
  width: 22px; height: 1px; background: var(--ink);
  transition: transform 0.3s var(--ease);
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after  { top: 7px; }
.nav-toggle[aria-expanded='true'] span { background: transparent; }
.nav-toggle[aria-expanded='true'] span::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded='true'] span::after  { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    background: var(--bg);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s var(--ease), visibility 0.4s;
  }
  .nav[data-open='true'] { opacity: 1; visibility: visible; }
  .nav a { font-size: 1.0625rem; letter-spacing: 0.1em; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: min(92vh, 900px);
  display: flex;
  align-items: flex-end;
  padding-block: clamp(9rem, 18vh, 13rem) clamp(3.5rem, 8vh, 6rem);
  overflow: hidden;
}

/* A very slow vertical wash — suggests depth without an image. */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 85% at 50% 108%, rgba(196, 163, 90, 0.10) 0%, transparent 62%),
    linear-gradient(180deg, #080809 0%, #0B0B0C 55%, #101012 100%);
  z-index: -1;
}

.hero-inner { width: 100%; }

.hero .display { max-width: 15ch; }

.hero-sub {
  margin-top: 2.25rem;
  max-width: 46ch;
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  color: var(--ink-soft);
}

.hero-actions {
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.5rem;
  align-items: center;
}

/* ---------- Editorial two-column ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: start;
}
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

.split--even { grid-template-columns: 1fr 1fr; }
@media (max-width: 860px) { .split--even { grid-template-columns: 1fr; } }

/* ---------- Range cards ---------- */

.range {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 4vw, 3.25rem);
  margin-top: clamp(3rem, 6vw, 4.5rem);
}
@media (max-width: 860px) { .range { grid-template-columns: 1fr; } }

.range-card { display: block; }

.range-figure {
  position: relative;
  aspect-ratio: 4 / 3.4;
  overflow: hidden;
  background: var(--bg-inset);
  border: 1px solid var(--rule);
}
.range-figure img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease), opacity 0.6s var(--ease);
  opacity: 0.92;
}
.range-card:hover .range-figure img { transform: scale(1.045); opacity: 1; }

.range-body { padding-top: 1.6rem; }
.range-body .h3 { margin-bottom: 0.5rem; }
.range-role {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}
.range-body p { color: var(--ink-soft); font-size: 0.9375rem; }

/* ---------- Numbered points ---------- */

.points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  margin-top: clamp(3rem, 6vw, 4.5rem);
  counter-reset: pt;
}
@media (max-width: 860px) { .points { grid-template-columns: 1fr; } }

.point { border-top: 1px solid var(--rule); padding-top: 1.75rem; }
.point::before {
  counter-increment: pt;
  content: counter(pt, decimal-leading-zero);
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.point h3 { font-size: 1.1875rem; margin-bottom: 0.75rem; }
.point p { color: var(--ink-soft); font-size: 0.9375rem; }

/* ---------- Spec table ---------- */

.specs { border-top: 1px solid var(--rule); margin-top: 2.5rem; }
.spec-row {
  display: grid;
  grid-template-columns: minmax(9rem, 0.4fr) 1fr;
  gap: 1rem 2rem;
  padding-block: 1.15rem;
  border-bottom: 1px solid var(--rule);
}
@media (max-width: 620px) {
  .spec-row { grid-template-columns: 1fr; gap: 0.35rem; padding-block: 1rem; }
}
.spec-key {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 0.25em;
}
.spec-val { color: var(--ink); font-size: 0.9375rem; }

/* A visible, honest placeholder for data we do not yet publish. */
.spec-pending { color: var(--ink-faint); font-style: italic; }

/* ---------- Performance table ---------- */

.perf-wrap { overflow-x: auto; margin-top: 2.5rem; }
.perf { width: 100%; border-collapse: collapse; min-width: 33rem; }
.perf th,
.perf td {
  text-align: left;
  padding: 1.1rem 1.75rem 1.1rem 0;
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}
.perf thead th {
  border-top: 1px solid var(--rule);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 400;
  color: var(--ink-faint);
}
.perf td { font-size: 0.9375rem; color: var(--ink); }
.perf tbody tr:last-child th,
.perf tbody tr:last-child td { border-bottom: 0; }
.perf-note {
  margin-top: 1.75rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--ink-faint);
  max-width: 62ch;
}

/* ---------- Pull quote / statement ---------- */

.statement {
  font-size: clamp(1.5rem, 1.1rem + 1.9vw, 2.5rem);
  line-height: 1.28;
  letter-spacing: -0.02em;
  max-width: 22ch;
  font-weight: 300;
}

/* ---------- FAQ ---------- */

.faq { margin-top: clamp(2.5rem, 5vw, 3.5rem); border-top: 1px solid var(--rule); }
.faq-item { border-bottom: 1px solid var(--rule); }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 2rem;
  padding: 1.6rem 0;
  background: none;
  border: 0;
  color: var(--ink);
  font-family: inherit;
  font-size: 1.0625rem;
  font-weight: 300;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
}
.faq-q::after {
  content: '+';
  color: var(--accent);
  font-size: 1.125rem;
  flex: none;
  transition: transform 0.35s var(--ease);
}
.faq-item[data-open='true'] .faq-q::after { transform: rotate(45deg); }
.faq-a {
  display: none;
  padding-bottom: 1.75rem;
  color: var(--ink-soft);
  font-size: 0.9375rem;
}
.faq-item[data-open='true'] .faq-a { display: block; }

/* ---------- Form ---------- */

.form { margin-top: 2.5rem; max-width: 640px; }
.field { margin-bottom: 1.6rem; }
.field label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.65rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.95em 1.1em;
  background: var(--bg-inset);
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 300;
  border-radius: 0;
  transition: border-color 0.3s var(--ease);
}
.field textarea { min-height: 8rem; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { outline: none; border-color: var(--accent); }
.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--accent) 50%),
                    linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 1.35rem) 1.35rem, calc(100% - 1.05rem) 1.35rem;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
.hp { position: absolute; left: -9999px; }

/* ---------- Footer ---------- */

.site-foot {
  border-top: 1px solid var(--rule);
  padding-block: clamp(3.5rem, 7vw, 5.5rem) 2.5rem;
  background: var(--bg-inset);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(2, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
}
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .foot-grid { grid-template-columns: 1fr; } }

.foot-brand img { width: 168px; margin-bottom: 1.5rem; }
.foot-brand p { font-size: 0.875rem; color: var(--ink-faint); max-width: 34ch; }

.foot-col h4 {
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1.35rem;
}
.foot-col ul { list-style: none; margin: 0; padding: 0; }
.foot-col li { margin-bottom: 0.8rem; }
.foot-col a {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  transition: color 0.3s var(--ease);
}
.foot-col a:hover { color: var(--accent); }

.foot-base {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
  font-size: 0.8125rem;
  color: var(--ink-faint);
}
.foot-base a { color: var(--ink-faint); }
.foot-base a:hover { color: var(--accent); }

/* ---------- Scroll reveal ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .range-figure img { transition: none; }
}

/* ---------- Utilities ---------- */

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: #0B0B0C;
  padding: 0.85em 1.5em; font-size: 0.875rem;
}
.skip:focus { left: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }