/* ================================================================
   home.css — SountIO Company Homepage
   Styles specific to index.html company overview page.
   Design system tokens come from css/tokens.css (linked in HTML).
================================================================ */

/* ── Reset & Base ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 64px;
}

body {
  background: var(--c-bg);
  color: var(--c-text-1);
  font-family: var(--f-body);
  font-size: var(--t-base);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* ── Layout Primitives ─────────────────────────────────────────── */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}
.container--narrow { max-width: var(--container-n); }

.section {
  padding-block: var(--section-py);
}
.section--alt { background: var(--c-bg-2); }

.section__header {
  text-align: center;
  margin-bottom: var(--sp-16);
}
.section__overline {
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--sp-3);
}
.section__title {
  font-family: var(--f-display);
  font-size: var(--t-3xl);
  font-weight: 400;
  line-height: 1.15;
  color: var(--c-text-1);
  margin-bottom: var(--sp-4);
}
.section__subtitle {
  font-size: var(--t-lg);
  color: var(--c-text-2);
  max-width: 56ch;
  margin-inline: auto;
}

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-8);
  border-radius: var(--r-pill);
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background var(--t-norm), color var(--t-norm),
              box-shadow var(--t-norm), transform var(--t-fast);
}
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--c-accent);
  color: #07090F;
}
.btn--primary:hover {
  background: #84b4dd;
  box-shadow: 0 0 28px var(--c-accent-glow);
}
.btn--ghost {
  background: transparent;
  color: var(--c-text-1);
  border: 1.5px solid var(--c-border-s);
}
.btn--ghost:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}
.btn--lg { padding: var(--sp-4) var(--sp-10); font-size: var(--t-base); }
.btn--glow { box-shadow: 0 0 40px var(--c-accent-glow); }
.btn--glow:hover { box-shadow: 0 0 60px rgba(106, 159, 212, 0.35); }

/* ── Navigation ────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background var(--t-norm), backdrop-filter var(--t-norm);
}
.header.is-scrolled {
  background: rgba(7, 9, 15, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
  height: 64px;
}

.nav__logo {
  font-family: var(--f-display);
  font-size: var(--t-xl);
  font-weight: 400;
  color: var(--c-text-1);
  flex-shrink: 0;
  letter-spacing: 0.01em;
}

.nav__links {
  display: flex;
  gap: var(--sp-6);
  margin-inline: auto;
  list-style: none;
}
.nav__links a {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  transition: color var(--t-fast);
}
.nav__links a:hover { color: var(--c-text-1); }

.nav__actions { display: flex; align-items: center; gap: var(--sp-4); }

.lang-toggle {
  background: transparent;
  border: 1.5px solid var(--c-border);
  color: var(--c-text-2);
  border-radius: var(--r-pill);
  padding: var(--sp-1) var(--sp-3);
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color var(--t-fast), color var(--t-fast);
}
.lang-toggle:hover { border-color: var(--c-accent); color: var(--c-accent); }

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
  margin-left: auto;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--c-text-1);
  transition: transform var(--t-norm), opacity var(--t-fast);
}

/* ── Hero ──────────────────────────────────────────────────────── */
.home-hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.home-hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 60%, rgba(106,159,212,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 30% at 20% 80%, rgba(90,120,200,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.home-hero__inner {
  position: relative;
  text-align: center;
  padding-top: calc(64px + var(--sp-20));
  padding-bottom: var(--sp-20);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-6);
}

.home-hero__label {
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent);
}

.home-hero__title {
  font-family: var(--f-display);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 400;
  line-height: 1.08;
  color: var(--c-text-1);
  max-width: 14ch;
}

.home-hero__sub {
  font-size: var(--t-lg);
  color: var(--c-text-2);
  max-width: 46ch;
  line-height: 1.7;
}

/* ── Products Grid ─────────────────────────────────────────────── */
.products__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--sp-6);
  max-width: 960px;
  margin-inline: auto;
}

.product-card {
  position: relative;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--sp-10);
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  text-decoration: none;
  transition: border-color var(--t-norm), box-shadow var(--t-norm),
              transform var(--t-slow);
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--r-lg);
  background: radial-gradient(
    ellipse 70% 50% at 50% 0%,
    var(--c-accent-dim) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity var(--t-norm);
  pointer-events: none;
}
.product-card:hover {
  border-color: var(--c-border-s);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}
.product-card:hover::before { opacity: 1; }

/* Natt card uses its own accent colour */
.product-card[data-accent="natt"] {
  --c-accent: #4BA89A;
  --c-accent-dim: rgba(75, 168, 154, 0.14);
  --c-accent-glow: rgba(75, 168, 154, 0.22);
}

.product-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: var(--c-accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-accent);
}
.product-card__icon svg { width: 24px; height: 24px; }

.product-card__label {
  font-size: var(--t-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
}

.product-card__name {
  font-family: var(--f-display);
  font-size: var(--t-2xl);
  font-weight: 400;
  color: var(--c-text-1);
  line-height: 1.2;
}

.product-card__desc {
  font-size: var(--t-sm);
  color: var(--c-text-2);
  line-height: 1.65;
  flex: 1;
}

.product-card__price {
  font-size: var(--t-base);
  color: var(--c-text-1);
  font-weight: 500;
}
.product-card__price em {
  font-style: normal;
  color: var(--c-accent);
  font-size: var(--t-xl);
  font-weight: 600;
}

.product-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--t-sm);
  font-weight: 600;
  color: var(--c-accent);
  transition: gap var(--t-fast);
}
.product-card:hover .product-card__cta { gap: var(--sp-4); }

.product-card__footer {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-top: var(--sp-2);
}

.product-card__price-sub {
  font-size: var(--t-xs);
  color: var(--c-text-3);
}

.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: auto;
}
.product-card__tag {
  font-size: var(--t-xs);
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--r-pill);
  background: rgba(255,255,255,0.06);
  color: var(--c-text-2);
  border: 1px solid var(--c-border);
}

/* ── About Section ─────────────────────────────────────────────── */
.about__body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  font-size: var(--t-lg);
  color: var(--c-text-2);
  line-height: 1.75;
  margin-bottom: var(--sp-16);
}
.about__body p:first-child {
  font-size: var(--t-xl);
  color: var(--c-text-1);
}

.about__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--sp-6);
}

.about__fact {
  border-left: 2px solid var(--c-accent);
  padding-left: var(--sp-5);
}
.about__fact-number {
  font-family: var(--f-display);
  font-size: var(--t-2xl);
  color: var(--c-text-1);
  line-height: 1.1;
}
.about__fact-label {
  font-size: var(--t-sm);
  color: var(--c-text-3);
  margin-top: var(--sp-1);
}

/* ── Contact Section ───────────────────────────────────────────── */
.contact {
  position: relative;
  overflow: hidden;
  text-align: center;
}
.contact__glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--c-accent-glow) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.contact__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-6);
}
.contact__title {
  font-family: var(--f-display);
  font-size: var(--t-3xl);
  font-weight: 400;
  line-height: 1.15;
}
.contact__sub {
  font-size: var(--t-lg);
  color: var(--c-text-2);
  max-width: 44ch;
}

/* ── Footer ────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--c-border);
  padding-block: var(--sp-12);
  background: var(--c-bg);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  gap: var(--sp-8);
}
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.footer__logo {
  font-family: var(--f-display);
  font-size: var(--t-xl);
  color: var(--c-text-1);
}
.footer__tagline, .footer__company {
  font-size: var(--t-xs);
  color: var(--c-text-3);
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  align-items: center;
}
.footer__links a {
  font-size: var(--t-xs);
  color: var(--c-text-3);
  transition: color var(--t-fast);
}
.footer__links a:hover { color: var(--c-accent); }

.footer__legal {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  text-align: right;
}
.footer__legal span {
  font-size: var(--t-xs);
  color: var(--c-text-3);
}
#footer-icp:empty { display: none; }

/* ── Scroll Reveal ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
  transition-delay: var(--delay, 0ms);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav__links { display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; background: rgba(7,9,15,0.96);
    padding: var(--sp-6); gap: var(--sp-5); }
  .nav__links.is-open { display: flex; }
  .nav__hamburger { display: flex; }

  .products__grid { grid-template-columns: 1fr; }
  .about__facts    { grid-template-columns: 1fr 1fr; }

  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer__links { flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .footer__legal { text-align: center; }
  .footer__brand { align-items: center; }
}