/* PRODUCT PAGE — Audiophony AIO */
:root {
  /* Thème Amber (défaut) */
  --accent: #ff6a2b;
  --accent-rgb: 255, 106, 43;
  --accent-2: #ffa574;
  --ink: #fff;
  --ink-soft: rgba(255,255,255,0.72);
  --ink-muted: rgba(255,255,255,0.5);
  --bg: #0a0a0b;
  --bg-2: #050505;
  --border: rgba(255,255,255,0.08);
  --font-mono: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}
body.theme-cyan {
  --accent: #00b7c9;
  --accent-rgb: 0, 183, 201;
  --accent-2: #6de4ee;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
ul { margin: 0; padding: 0; list-style: none; }

/* NAV — aligné sur index.html (logo + liens + toggle thème) */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 32px;
  background: rgba(10,10,11,0.72);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1320px;
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
}
.nav-brand { display: flex; align-items: center; gap: 14px; }
.nav-brand img { height: 41px; width: auto; }
.nav-brand .sep { width: 1px; height: 16px; background: rgba(255,255,255,0.2); }
.nav-brand .tag { font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(255,255,255,0.65); font-weight: 500; }
.nav-links { display: flex; gap: 28px; font-size: 13px; color: rgba(255,255,255,0.78); }
.nav-links a { position: relative; padding: 4px 0; transition: color 0.3s var(--ease); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { transform: scaleX(1); }

/* THEME TOGGLE — 2 pastilles Amber / Cyan */
.theme-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.3s var(--ease);
}
.theme-toggle:hover { border-color: rgba(255,255,255,0.25); }
.theme-toggle:focus { outline: none; border-color: var(--accent); }
.theme-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 1.5px solid transparent;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
  cursor: pointer;
}
.theme-dot--amber { background: radial-gradient(circle at 30% 30%, #ffa574, #ff6a2b); }
.theme-dot--cyan  { background: radial-gradient(circle at 30% 30%, #6de4ee, #00b7c9); }
body:not(.theme-cyan) .theme-dot--amber { border-color: #fff; transform: scale(1.1); }
body.theme-cyan       .theme-dot--cyan  { border-color: #fff; transform: scale(1.1); }

/* Hamburger button — hidden by default on desktop */
.nav-burger {
  display: none;
  width: 38px; height: 38px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 0;
  cursor: pointer;
  position: relative;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.nav-burger span {
  position: absolute;
  left: 9px; right: 9px; height: 1.5px;
  background: #fff;
  border-radius: 1px;
  transition: transform 0.35s var(--ease), opacity 0.25s var(--ease), top 0.35s var(--ease);
}
.nav-burger span:nth-child(1) { top: 12px; }
.nav-burger span:nth-child(2) { top: 18px; }
.nav-burger span:nth-child(3) { top: 24px; }
.nav-burger:hover {
  border-color: rgba(var(--accent-rgb), 0.5);
  background: rgba(var(--accent-rgb), 0.06);
}
body.menu-open .nav-burger span:nth-child(1) { top: 18px; transform: rotate(45deg); }
body.menu-open .nav-burger span:nth-child(2) { opacity: 0; }
body.menu-open .nav-burger span:nth-child(3) { top: 18px; transform: rotate(-45deg); }

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(4, 4, 6, 0.98);
  opacity: 0;
  visibility: hidden;
  z-index: 40;
  transition: opacity 0.35s var(--ease), visibility 0.35s;
  overflow-y: auto;
}
body.menu-open .mobile-menu { opacity: 1; visibility: visible; }
body.menu-open { overflow: hidden; }
.mobile-menu-inner {
  display: flex; flex-direction: column;
  gap: 2px;
  padding: 100px 36px 40px;
  max-width: 420px;
  margin: 0 auto;
}
.mobile-menu-inner a {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: #fff;
  text-decoration: none;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease), color 0.2s var(--ease);
}
.mobile-menu-inner a:hover { color: var(--accent); }
body.menu-open .mobile-menu-inner a {
  opacity: 1;
  transform: translateY(0);
}
body.menu-open .mobile-menu-inner a:nth-child(1) { transition-delay: 0.08s; }
body.menu-open .mobile-menu-inner a:nth-child(2) { transition-delay: 0.14s; }
body.menu-open .mobile-menu-inner a:nth-child(3) { transition-delay: 0.20s; }
body.menu-open .mobile-menu-inner a:nth-child(4) { transition-delay: 0.26s; }
body.menu-open .mobile-menu-inner a:nth-child(5) { transition-delay: 0.32s; }
body.menu-open .mobile-menu-inner a:nth-child(6) { transition-delay: 0.38s; }
body.menu-open .mobile-menu-inner a:nth-child(7) { transition-delay: 0.44s; }
.mobile-menu-theme {
  margin-top: 28px;
  padding: 20px 0;
  display: flex; align-items: center; justify-content: space-between;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.4s var(--ease) 0.48s, transform 0.4s var(--ease) 0.48s;
}
body.menu-open .mobile-menu-theme { opacity: 1; transform: translateY(0); }
.mobile-menu-theme-label {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}
.mobile-menu-theme-dots { display: flex; gap: 12px; }
.mobile-menu-theme-dots .theme-dot {
  width: 28px; height: 28px;
  padding: 0;
  border: 2px solid rgba(255,255,255,0.2);
}


/* LANG SWITCH — Pill toggle FR / EN */
.lang-switch {
  display: inline-flex;
  align-items: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 999px;
  padding: 3px;
  gap: 0;
  height: 30px;
  margin-left: 4px;
}
.lang-switch a,
.lang-switch span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  border-radius: 999px;
  font-family: var(--font-mono, monospace);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  line-height: 1;
  height: 22px;
  text-decoration: none;
  transition: color 0.25s var(--ease, ease), background 0.25s var(--ease, ease);
  white-space: nowrap;
}
.lang-switch .lang-current {
  background: rgba(255,255,255,0.09);
  color: #fff;
  cursor: default;
}
.lang-switch a.lang-target {
  color: rgba(255,255,255,0.55);
}
.lang-switch a.lang-target:hover {
  color: var(--accent, #00b7c9);
  background: rgba(var(--accent-rgb, 0,183,201), 0.08);
}
.lang-flag {
  width: 16px;
  height: 11px;
  display: block;
  flex-shrink: 0;
  border-radius: 1.5px;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1);
}


.mobile-menu .lang-switch,
.mobile-menu-inner .lang-switch {
  margin: 32px auto 0;
  align-self: center;
  height: 46px;
  padding: 5px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.14);
}
.mobile-menu .lang-switch a,
.mobile-menu .lang-switch span,
.mobile-menu-inner .lang-switch a,
.mobile-menu-inner .lang-switch span {
  height: 36px;
  padding: 0 18px;
  font-size: 13px;
  letter-spacing: 2px;
  gap: 10px;
}
.mobile-menu .lang-flag,
.mobile-menu-inner .lang-flag {
  width: 22px;
  height: 16px;
  border-radius: 2px;
}

@media (max-width: 1023px) {
  .nav-links { display: none; }
  .theme-toggle { display: none; }
  .nav-burger { display: block; }
  .nav-links .lang-switch { display: none; }
}

/* HERO */
.p-hero {
  padding: 160px 24px 60px;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(var(--accent-rgb),0.18) 0%, transparent 55%),
    linear-gradient(180deg, #0a0a0b 0%, #050505 100%);
  position: relative;
  overflow: hidden;
}
.p-back {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 28px;
  transition: color 0.3s var(--ease), gap 0.3s var(--ease);
}
.p-back:hover { color: var(--accent); gap: 14px; }

.p-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 24px;
}
.p-title {
  font-size: clamp(54px, 9vw, 120px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.05em;
  margin: 0 0 20px;
}
.p-lede {
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0 auto 24px;
}
.p-lede .hl { color: var(--accent); }

/* QUICK SPECS ROW */
.p-quick {
  display: flex; justify-content: center; gap: 56px; flex-wrap: wrap;
  margin-top: 40px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  max-width: 900px; margin-left: auto; margin-right: auto;
}
.p-quick-item { text-align: center; }
.p-quick-label {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 8px;
}
.p-quick-value { font-size: 18px; font-weight: 600; color: var(--ink); line-height: 1.25; }
.p-quick-value .mono {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 500;
}

/* PRODUCT IMAGE SHOWCASE */
.p-showcase {
  padding: 60px 24px 100px;
  background: linear-gradient(180deg, #050505 0%, #0a0a0b 100%);
  position: relative;
}
.p-showcase-wrap {
  max-width: 1280px; margin: 0 auto;
  position: relative;
  padding: 60px 24px;
  border-radius: 32px;
  background: radial-gradient(ellipse at 50% 60%, rgba(var(--accent-rgb),0.12) 0%, transparent 70%);
  min-height: 660px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  overflow: hidden;
}
.p-stack {
  position: relative;
  width: 100%; height: 540px;
}
.p-stack img {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  max-width: 92%;
  max-height: 540px;
  width: auto;
  filter: drop-shadow(0 40px 60px rgba(0,0,0,0.7));
  opacity: 0;
  transition: opacity 0.8s var(--ease);
}
.p-stack img.is-active { opacity: 1; }

.p-toggle {
  margin-top: 40px;
  display: inline-flex; gap: 4px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  padding: 4px;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.25em; text-transform: uppercase;
}
.p-toggle button {
  background: transparent; border: none; color: var(--ink-muted);
  padding: 10px 22px; border-radius: 999px; cursor: pointer;
  font: inherit;
  transition: color 0.3s var(--ease), background 0.3s var(--ease);
}
.p-toggle button.is-active {
  background: rgba(var(--accent-rgb),0.18); color: var(--accent);
}
.p-toggle button:hover:not(.is-active) { color: #fff; }

/* SPECS */
.p-specs {
  padding: 120px 24px;
  background: #050505;
  position: relative;
}
.p-specs::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(0deg, transparent 49.5%, rgba(255,255,255,0.025) 50%, transparent 50.5%),
    linear-gradient(90deg, transparent 49.5%, rgba(255,255,255,0.025) 50%, transparent 50.5%);
  background-size: 60px 60px;
  pointer-events: none; opacity: 0.5;
  mask: linear-gradient(180deg, rgba(0,0,0,0.4), rgba(0,0,0,0.1));
  -webkit-mask: linear-gradient(180deg, rgba(0,0,0,0.4), rgba(0,0,0,0.1));
}
.p-specs-inner { max-width: 1280px; margin: 0 auto; position: relative; z-index: 1; }
.p-specs-head { text-align: center; margin-bottom: 72px; }
.p-specs-head h2 {
  font-size: clamp(34px, 4.4vw, 56px);
  font-weight: 700; letter-spacing: -0.04em; line-height: 1.05;
  margin: 0;
}
.p-specs-head h2 .accent {
  color: var(--accent);
}
.p-specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}
.p-cat {
  background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px 26px;
  position: relative; overflow: hidden;
}
.p-cat::before {
  content: ""; position: absolute;
  top: 0; left: 26px; right: 26px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(var(--accent-rgb),0.5), transparent);
}
.p-cat-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--accent);
}
.p-cat-head::before {
  content: ""; display: inline-block;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(var(--accent-rgb),0.6);
}
.p-cat ul { display: flex; flex-direction: column; gap: 10px; }
.p-cat li {
  font-size: 13px; line-height: 1.55;
  color: rgba(255,255,255,0.72);
  padding-left: 16px; position: relative;
}
.p-cat li::before {
  content: ""; position: absolute;
  left: 0; top: 8px;
  width: 6px; height: 1px;
  background: rgba(255,255,255,0.25);
}
.p-cat li .mono {
  font-family: var(--font-mono); font-size: 12px;
  color: inherit;
}

/* DOWNLOADS — bloc Documentation / téléchargements */
.p-downloads {
  padding: 80px 24px 40px;
  background: linear-gradient(180deg, #050505 0%, #07070a 100%);
}
.p-downloads-inner {
  max-width: 1280px;
  margin: 0 auto;
}
.p-downloads-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
  display: inline-flex; align-items: center; gap: 10px;
}
.p-downloads-eyebrow::before {
  content: ""; width: 28px; height: 1px; background: var(--accent); display: inline-block;
}
.p-downloads-title {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 700; letter-spacing: -0.03em; line-height: 1.05;
  margin: 0 0 36px;
  color: var(--ink);
}
.p-downloads-title .accent { color: var(--accent); }
.p-downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 14px;
}

.p-dl {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 18px 22px 18px 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.035) 0%, rgba(255,255,255,0.012) 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), background 0.4s var(--ease), box-shadow 0.4s var(--ease);
  isolation: isolate;
}
.p-dl::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 100% at 0% 50%, rgba(var(--accent-rgb), 0.10), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  z-index: 0;
}
.p-dl > * { position: relative; z-index: 1; }
.p-dl:hover {
  transform: translateY(-3px);
  border-color: rgba(var(--accent-rgb), 0.55);
  background: linear-gradient(180deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
  box-shadow: 0 16px 40px -16px rgba(var(--accent-rgb), 0.45);
}
.p-dl:hover::before { opacity: 1; }

.p-dl-icon {
  width: 52px; height: 56px;
  border-radius: 10px;
  background: rgba(var(--accent-rgb), 0.12);
  border: 1px solid rgba(var(--accent-rgb), 0.32);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  position: relative;
}
.p-dl-icon::after {
  content: "PDF";
  position: absolute; bottom: 4px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 8px; letter-spacing: 0.18em;
  color: var(--accent);
}
.p-dl-icon svg { width: 22px; height: 22px; margin-bottom: 8px; }
.p-dl-meta { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.p-dl-type {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.24em; text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}
.p-dl-title {
  font-size: 16px; font-weight: 600;
  color: var(--ink); letter-spacing: -0.005em;
  line-height: 1.25;
}
.p-dl-sub {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.p-dl-action {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7);
  flex-shrink: 0;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), color 0.4s var(--ease), transform 0.4s var(--ease);
}
.p-dl:hover .p-dl-action {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  transform: translateY(2px);
}
.p-dl-action svg { width: 16px; height: 16px; }

@media (max-width: 480px) {
  .p-downloads { padding: 56px 20px 32px; }
  .p-dl { padding: 14px 16px; gap: 14px; }
  .p-dl-icon { width: 44px; height: 48px; }
}

/* Responsive — réduction des paddings inter-sections sur tablette/mobile */
@media (max-width: 900px) {
  .p-hero { padding: 110px 20px 36px; }
  .p-showcase { padding: 32px 20px 48px; }
  .p-showcase-wrap { padding: 32px 16px; min-height: 380px; }
  .p-stack { height: 280px; }
  .p-stack img { max-height: 280px; }
  .p-specs { padding: 60px 20px; }
  .p-downloads { padding: 56px 20px 28px; }
  .p-cta { padding: 64px 20px; }
}
@media (max-width: 600px) {
  .p-hero { padding: 96px 18px 28px; }
  .p-showcase { padding: 20px 16px 32px; }
  .p-showcase-wrap { padding: 24px 12px; min-height: 320px; }
  .p-stack { height: 220px; }
  .p-stack img { max-height: 220px; }
  .p-specs { padding: 48px 18px; }
  .p-cta { padding: 56px 18px; }
}

/* CTA BOTTOM */
.p-cta {
  padding: 120px 24px;
  text-align: center;
  background: linear-gradient(180deg, #050505 0%, #0a0a0b 100%);
}
.p-cta h2 {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700; letter-spacing: -0.04em;
  margin: 0 0 40px;
}
.p-cta-buttons { display: inline-flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px; border-radius: 999px;
  font-size: 14px; font-weight: 500;
  transition: all 0.4s var(--ease);
  position: relative; overflow: hidden;
}
.btn-primary { background: #fff; color: #000; }
.btn-primary::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  transform: translateY(100%);
  transition: transform 0.4s var(--ease);
  z-index: -1;
}
.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 40px 120px -20px rgba(var(--accent-rgb), 0.45);
}
.btn-primary:hover::before { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.08);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn .arr { transition: transform 0.3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* FOOTER */
.foot {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-muted);
}
.foot a { color: var(--ink-muted); }
.foot a:hover { color: var(--accent); }