/* AURIS One — Apple-Ästhetik: System-Schrift, riesige Typo, viel Raum,
   dunkler Hero, Bento-Grid. Reveal-Zustände gelten nur mit JS (html.js). */

:root {
  --black: #000000;
  --graphite: #1D1D1F;
  --white: #FFFFFF;
  --snow: #F5F5F7;
  --text-dark: #1D1D1F;
  --text-light: #F5F5F7;
  --gray: #6E6E73;
  --blue: #0071E3;
  --blue-bright: #2997FF;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--black);
  color: var(--text-dark);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { letter-spacing: -0.015em; }

a:focus-visible { outline: 2px solid var(--blue-bright); outline-offset: 3px; border-radius: 4px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(0, 0, 0, .72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}
.nav-inner {
  max-width: 61rem; margin: 0 auto; padding: .75rem 1.4rem;
  display: flex; justify-content: space-between; align-items: center;
}
.nav-brand {
  color: var(--text-light); text-decoration: none;
  font-weight: 600; letter-spacing: .18em; font-size: .95rem;
}
.nav nav { display: flex; gap: 1.8rem; align-items: center; }
.nav nav a {
  color: rgba(245, 245, 247, .8); text-decoration: none; font-size: .8rem;
}
.nav nav a:hover { color: var(--white); }
.nav-buy {
  background: var(--blue); color: var(--white) !important;
  padding: .3rem .85rem; border-radius: 999px; font-size: .78rem !important;
}
.nav-buy:hover { background: #0077ED; }

/* Hero */
.hero {
  background: var(--black); color: var(--text-light);
  text-align: center; padding: 4.5rem 1.4rem 3.5rem;
}
.hero-eyebrow { color: var(--blue-bright); font-size: 1.05rem; font-weight: 600; }
.hero h1 {
  font-size: clamp(3rem, 9vw, 5.5rem); font-weight: 700;
  margin-top: .2rem;
}
.hero-tagline {
  font-size: clamp(1.3rem, 3vw, 1.8rem); font-weight: 600;
  background: linear-gradient(90deg, #2997FF, #7B5CFF 55%, #FF5E8F);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-links { display: flex; gap: 1.6rem; justify-content: center; align-items: center; margin-top: 1.4rem; }
.pill {
  display: inline-block; background: var(--blue); color: var(--white);
  text-decoration: none; padding: .55rem 1.35rem; border-radius: 999px;
  font-size: .95rem;
}
.pill:hover { background: #0077ED; }
.learn { color: var(--blue-bright); text-decoration: none; font-size: .95rem; }
.learn:hover { text-decoration: underline; }
.hero-product { max-width: 26rem; margin: 1.5rem auto 0; }
.headphones { width: 100%; display: block; }
.hero-price { color: var(--gray); font-size: .85rem; margin-top: .8rem; }

/* Feature-Sektionen */
.feature { text-align: center; padding: 7rem 1.4rem; }
.feature-light { background: var(--snow); color: var(--text-dark); }
.feature-dark { background: var(--graphite); color: var(--text-light); }
.feature-inner { max-width: 44rem; margin: 0 auto; }
.feature h2 {
  font-size: clamp(2rem, 5.5vw, 3.5rem); font-weight: 700; line-height: 1.07;
  margin-bottom: 1.2rem;
}
.feature p:not(.big-number) { font-size: 1.2rem; color: var(--gray); max-width: 36rem; margin-left: auto; margin-right: auto; }
.feature-dark p:not(.big-number) { color: #A1A1A6; }

.big-number {
  font-size: clamp(5rem, 15vw, 9.5rem); font-weight: 700; line-height: 1;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #2997FF, #7B5CFF);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  margin-bottom: 1rem;
}

/* Bento */
.bento-head { max-width: 61rem; margin: 0 auto 2.4rem; }
.bento {
  max-width: 61rem; margin: 0 auto;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  text-align: left;
}
.bento-card {
  background: var(--white); border-radius: 1.4rem; padding: 1.8rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .04);
}
.bento-wide { grid-column: span 2; }
.bento-card h3 { font-size: 1.35rem; font-weight: 700; margin-bottom: .5rem; }
.bento-card p { font-size: 1rem !important; color: var(--gray); margin: 0 !important; }

/* Specs */
.specs { background: var(--white); padding: 6rem 1.4rem; }
.specs-inner { max-width: 40rem; margin: 0 auto; }
.specs h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1.8rem; text-align: center; }
.specs-list div {
  display: grid; grid-template-columns: 11rem 1fr; gap: 1.4rem;
  padding: 1rem 0; border-bottom: 1px solid #E8E8ED;
}
.specs-list div:first-child { border-top: 1px solid #E8E8ED; }
.specs-list dt { color: var(--gray); font-size: .95rem; }
.specs-list dd { font-size: .95rem; font-weight: 500; }

/* Kaufen */
.buy { background: var(--snow); text-align: center; padding: 7rem 1.4rem; }
.buy h2 { font-size: clamp(2.2rem, 6vw, 3.5rem); font-weight: 700; }
.buy-price { font-size: 1.6rem; color: var(--text-dark) !important; font-weight: 600; margin: .4rem 0 1.6rem; }
.pill-big { font-size: 1.1rem; padding: .8rem 2.2rem; }
.buy-note { font-size: .9rem !important; margin-top: 1.6rem; }
.buy p { color: var(--gray); }

/* Footnotes */
.footnotes {
  background: var(--black); color: #86868B;
  font-size: .75rem; padding: 2.2rem 1.4rem 4.5rem;
  text-align: center;
}
.footnotes p + p { margin-top: .5rem; }
.footnotes a { color: #A1A1A6; }

/* Demo-Badge (Portfolio-Navigation) */
.demo-badge {
  position: fixed; left: 1rem; bottom: 1rem; z-index: 60;
  font-size: .75rem; text-decoration: none;
  background: rgba(245, 245, 247, .9); color: var(--text-dark);
  padding: .45rem .8rem; border-radius: 999px;
  backdrop-filter: blur(8px);
}
.demo-badge:hover { background: var(--white); }

/* Reveal — nur mit JS und nur ohne reduced motion */
@media (prefers-reduced-motion: no-preference) {
  html.js [data-reveal] {
    opacity: 0; transform: translateY(28px);
    transition: opacity .8s cubic-bezier(.2, .6, .2, 1), transform .8s cubic-bezier(.2, .6, .2, 1);
  }
  html.js [data-reveal].in { opacity: 1; transform: none; }
}

/* Responsive */
@media (max-width: 780px) {
  .bento { grid-template-columns: 1fr; }
  .bento-wide { grid-column: auto; }
  .specs-list div { grid-template-columns: 1fr; gap: .15rem; }
  .nav nav a:not(.nav-buy) { display: none; }
  .feature { padding: 4.5rem 1.4rem; }
}