/* ==========================================================================
   BMW — concept site stylesheet
   Design tokens: telemetry / motorsport-precision direction
   ========================================================================== */

:root{
  --ink:        #0a0c10;
  --ink-soft:   #14161c;
  --paper:      #f4f5f6;
  --paper-dim:  #e7e9eb;
  --steel:      #8b9098;
  --line:       #22252c;
  --line-light: #d8dade;
  --m-blue:     #1d5fbf;
  --m-violet:   #6a3fa0;
  --m-red:      #e0001b;

  --font-display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-body:    'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  --container: 1240px;
  --gutter: clamp(20px, 4vw, 64px);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-family: var(--font-display); font-weight:700; text-transform:uppercase; letter-spacing:0.01em; }
p{ margin:0; }

.wrap{ max-width: var(--container); margin:0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

/* -------------------- M-stripe signature element -------------------- */
.m-stripe{
  height:4px;
  width:100%;
  background: linear-gradient(90deg,
    var(--m-blue) 0 33.3%,
    var(--m-violet) 33.3% 66.6%,
    var(--m-red) 66.6% 100%);
}
.m-stripe--short{ width:64px; }

/* -------------------- Focus / a11y -------------------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--m-blue);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* -------------------- Nav -------------------- */
.site-nav{
  position: fixed; top:0; left:0; right:0; z-index:100;
  display:flex; align-items:center; justify-content:space-between;
  padding: 22px var(--gutter);
  background: transparent;
  transition: background .35s ease, padding .35s ease, border-color .35s ease;
  border-bottom: 1px solid transparent;
}
.site-nav.is-scrolled{
  background: rgba(10,12,16,0.86);
  backdrop-filter: blur(10px);
  padding-top: 14px; padding-bottom:14px;
  border-bottom: 1px solid var(--line);
}
.brand-mark{
  font-family: var(--font-display);
  font-weight:700; font-size: 22px; letter-spacing: 0.12em;
  display:flex; align-items:center; gap:10px;
}
.brand-mark .dot{ width:8px; height:8px; border-radius:50%; background: var(--m-blue); box-shadow: 6px 0 0 var(--m-violet), 12px 0 0 var(--m-red); margin-right:6px; }
.nav-links{ display:flex; gap: 34px; }
.nav-links a{
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--steel); position:relative; padding: 4px 0;
}
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:-2px; height:2px; width:0%;
  background: var(--m-blue); transition: width .25s ease;
}
.nav-links a:hover, .nav-links a.active{ color: var(--paper); }
.nav-links a:hover::after, .nav-links a.active::after{ width:100%; }
.nav-toggle{ display:none; }

@media (max-width: 860px){
  .nav-links{
    position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px);
    background: var(--ink-soft); flex-direction:column; gap:0;
    padding: 100px 28px 28px; transform: translateX(100%); transition: transform .35s ease;
    border-left: 1px solid var(--line);
  }
  .nav-links.is-open{ transform: translateX(0); }
  .nav-links a{ padding: 14px 0; border-bottom: 1px solid var(--line); font-size:14px; }
  .nav-toggle{
    display:flex; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; z-index:101;
  }
  .nav-toggle span{ width:22px; height:2px; background:var(--paper); display:block; }
}

/* -------------------- Hero -------------------- */
.hero{
  position: relative; min-height: 100svh;
  display:flex; align-items:center;
  padding-top: 120px;
  overflow:hidden;
}
.hero-canvas{
  position:absolute; inset:0; z-index:1;
}
.hero-grid{
  position:absolute; inset:0; z-index:0; opacity:.35;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 60% 40%, black, transparent 70%);
}
.hero-content{
  position:relative; z-index:2;
  max-width: var(--container); margin:0 auto; width:100%;
  padding: 0 var(--gutter);
}
.eyebrow{
  font-family: var(--font-mono); font-size:12px; letter-spacing:0.18em; text-transform:uppercase;
  color: var(--m-blue); display:flex; align-items:center; gap:10px; margin-bottom:18px;
}
.eyebrow::before{ content:""; width:20px; height:1px; background: var(--m-blue); }
.hero h1{
  font-size: clamp(48px, 9vw, 128px); line-height: 0.92; max-width: 14ch;
}
.hero .lede{
  font-size: clamp(15px, 1.6vw, 18px); color: var(--steel); max-width: 46ch; margin-top: 22px; line-height:1.6;
}
.hero-actions{ display:flex; gap:16px; margin-top:38px; flex-wrap:wrap; }

.btn{
  font-family: var(--font-mono); font-size:12px; letter-spacing:0.08em; text-transform:uppercase;
  padding: 15px 26px; border:1px solid var(--paper); display:inline-flex; align-items:center; gap:10px;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.btn--primary{ background: var(--paper); color: var(--ink); }
.btn--primary:hover{ background: var(--m-blue); border-color: var(--m-blue); color:#fff; }
.btn--ghost{ border-color: var(--line); color: var(--paper); }
.btn--ghost:hover{ border-color: var(--paper); }

.telemetry-bar{
  position:relative; z-index:2;
  display:flex; flex-wrap:wrap; gap: 0;
  border-top: 1px solid var(--line);
  margin-top: 64px;
}
.telemetry-item{
  flex:1 1 160px; padding: 20px var(--gutter) 20px 0;
  border-right: 1px solid var(--line);
}
.telemetry-item:last-child{ border-right:none; }
.telemetry-item .val{ font-family: var(--font-mono); font-size: clamp(22px,2.4vw,30px); color:var(--paper); }
.telemetry-item .lbl{ font-family: var(--font-mono); font-size:11px; letter-spacing:0.1em; text-transform:uppercase; color:var(--steel); margin-top:4px; }

/* -------------------- Sections -------------------- */
section{ position:relative; }
.section{ padding: 120px 0; }
.section--tight{ padding: 80px 0; }
.section-head{ display:flex; justify-content:space-between; align-items:flex-end; gap:24px; margin-bottom: 56px; flex-wrap:wrap; }
.section-head h2{ font-size: clamp(34px, 5vw, 58px); line-height:0.96; }
.section-head .num{ font-family: var(--font-mono); color:var(--steel); font-size:13px; letter-spacing:.1em; }
.section-desc{ color:var(--steel); max-width:52ch; line-height:1.6; font-size:15px; }

.corner-frame{
  position:relative; border:1px solid var(--line);
}
.corner-frame::before, .corner-frame::after{
  content:""; position:absolute; width:14px; height:14px; border: 2px solid var(--m-blue);
}
.corner-frame::before{ top:-1px; left:-1px; border-right:none; border-bottom:none; }
.corner-frame::after{ bottom:-1px; right:-1px; border-left:none; border-top:none; }

/* -------------------- Model / card grid -------------------- */
.grid{ display:grid; gap: 1px; background: var(--line); border:1px solid var(--line); }
.grid--3{ grid-template-columns: repeat(3, 1fr); }
.grid--2{ grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px){ .grid--3{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px){ .grid--3, .grid--2{ grid-template-columns: 1fr; } }

.card{
  background: var(--ink); padding: 36px 30px; display:flex; flex-direction:column; gap:16px;
  transition: background .25s ease;
}
.card:hover{ background: var(--ink-soft); }
.card .card-tag{ font-family: var(--font-mono); font-size:11px; color: var(--m-blue); letter-spacing:.1em; text-transform:uppercase; }
.card h3{ font-size: 28px; }
.card .card-specs{ display:flex; gap:20px; margin-top:auto; padding-top:16px; border-top:1px solid var(--line); }
.card .card-specs div .val{ font-family: var(--font-mono); font-size:16px; }
.card .card-specs div .lbl{ font-family: var(--font-mono); font-size:10px; color:var(--steel); text-transform:uppercase; letter-spacing:.08em; }
.card-swatch{
  height: 160px; border:1px solid var(--line); position:relative; overflow:hidden;
  display:flex; align-items:center; justify-content:center;
}
.card-swatch canvas{ width:100%; height:100%; display:block; }
.card-swatch img{ width:100%; height:100%; object-fit:cover; display:block; }

/* -------------------- News -------------------- */
.news-card{ display:block; padding: 30px; border-bottom:1px solid var(--line); }
.news-card .meta{ font-family: var(--font-mono); font-size:11px; color:var(--steel); letter-spacing:.08em; text-transform:uppercase; display:flex; gap:16px; margin-bottom:10px; }
.news-card .meta .cat{ color: var(--m-blue); }
.news-card h3{ font-size: 26px; margin-bottom:8px; }
.news-card p{ color: var(--steel); font-size:14px; max-width: 62ch; line-height:1.6; }

/* -------------------- Contact -------------------- */
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); margin-bottom:1px; }
@media (max-width:640px){ .form-row{ grid-template-columns:1fr; } }
.field{ background:var(--ink); padding: 20px; }
.field label{ display:block; font-family: var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--steel); margin-bottom:10px; }
.field input, .field textarea{
  width:100%; background:transparent; border:none; color:var(--paper); font-family:var(--font-body); font-size:15px; outline:none; resize:vertical;
}
.field textarea{ min-height:120px; }

.contact-info{ display:flex; flex-direction:column; gap:28px; }
.contact-info .item .lbl{ font-family:var(--font-mono); font-size:11px; color:var(--m-blue); text-transform:uppercase; letter-spacing:.1em; margin-bottom:6px; }
.contact-info .item .val{ font-size:18px; }
.map-frame{ height: 320px; border:1px solid var(--line); position:relative; overflow:hidden; }

/* -------------------- RSS card carousel (Motorsport-Total DTM-feed) -------------------- */
.rss-section{ padding-top: 88px; padding-bottom: 56px; }
.rss-live-tag{
  display:flex; align-items:center; gap:9px;
  font-family: var(--font-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel);
}
.live-dot{ width:7px; height:7px; border-radius:50%; background:var(--m-red); box-shadow:0 0 0 3px rgba(224,0,27,.22); animation: pulse 1.6s ease-in-out infinite; flex:0 0 auto; }
@keyframes pulse{ 0%,100%{ opacity:1; } 50%{ opacity:.35; } }

.rss-carousel-wrap{ position:relative; margin-top: 8px; }
.rss-carousel{
  display:flex; gap:18px; overflow-x:auto; scroll-snap-type: x proximity; padding: 4px var(--gutter) 20px;
  margin: 0 calc(var(--gutter) * -1);
  scrollbar-width: thin; scrollbar-color: var(--line) transparent;
}
.rss-carousel::-webkit-scrollbar{ height:6px; }
.rss-carousel::-webkit-scrollbar-thumb{ background: var(--line); border-radius:4px; }

.rss-card{
  flex: 0 0 auto; width: 300px; scroll-snap-align:start;
  border:1px solid var(--line); background: var(--ink-soft);
  display:flex; flex-direction:column; overflow:hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.rss-card:hover{ transform: translateY(-4px); border-color: var(--m-blue); box-shadow: 0 16px 36px -18px rgba(29,95,191,.55); }
.rss-card-media{ position:relative; height:168px; overflow:hidden; background: linear-gradient(135deg, #1a1d24, #0a0c10); }
.rss-card-media img{ width:100%; height:100%; object-fit:cover; transition: transform .5s ease; }
.rss-card:hover .rss-card-media img{ transform: scale(1.07); }
.rss-card-media::after{ content:""; position:absolute; inset:0; background: linear-gradient(180deg, transparent 40%, rgba(10,12,16,.92)); }
.rss-card-noimg{ position:absolute; inset:0; display:flex; align-items:center; justify-content:center; }
.rss-card-noimg svg{ width:38px; height:38px; opacity:.35; }
.rss-pill{
  position:absolute; top:12px; left:12px; z-index:2;
  font-family: var(--font-mono); font-size:10px; letter-spacing:.08em; text-transform:uppercase;
  padding: 5px 10px; background: rgba(10,12,16,.75); backdrop-filter: blur(4px);
  border:1px solid var(--m-blue); color: var(--paper);
}
.rss-time{
  position:absolute; bottom:10px; left:14px; z-index:2;
  font-family: var(--font-mono); font-size:11px; color: var(--steel);
}
.rss-card-body{ padding: 16px 16px 18px; display:flex; flex-direction:column; gap:10px; flex:1; }
.rss-card-body h3{ font-family: var(--font-body); text-transform:none; font-weight:600; font-size:15px; line-height:1.4; letter-spacing:0; color:var(--paper); }
.rss-card-link{ margin-top:auto; font-family: var(--font-mono); font-size:11px; letter-spacing:.06em; text-transform:uppercase; color:var(--m-blue); display:inline-flex; align-items:center; gap:6px; }
.rss-card-link::after{ content:"→"; transition: transform .2s ease; }
.rss-card:hover .rss-card-link::after{ transform: translateX(3px); }

.rss-card--skeleton{ height: 264px; position:relative; overflow:hidden; }
.rss-card--skeleton::before{
  content:""; position:absolute; inset:0;
  background: linear-gradient(100deg, var(--ink-soft) 30%, #22252c 50%, var(--ink-soft) 70%);
  background-size: 200% 100%; animation: shimmer 1.4s ease-in-out infinite;
}
@keyframes shimmer{ 0%{ background-position: 150% 0; } 100%{ background-position: -50% 0; } }

.rss-arrow{
  position:absolute; top:50%; translate: 0 -50%; z-index:3;
  width:40px; height:40px; border-radius:50%; border:1px solid var(--line);
  background: rgba(10,12,16,.85); backdrop-filter: blur(6px); color: var(--paper);
  display:flex; align-items:center; justify-content:center; cursor:pointer; font-size:16px;
  transition: border-color .2s ease, background .2s ease;
}
.rss-arrow:hover{ border-color: var(--m-blue); background: var(--ink); }
.rss-arrow--prev{ left: 4px; }
.rss-arrow--next{ right: 4px; }
@media (max-width: 760px){ .rss-arrow{ display:none; } }

.rss-banner-note{ font-family:var(--font-mono); font-size:10px; color:var(--steel); letter-spacing:.05em; margin-top:-4px; }

/* -------------------- Footer -------------------- */
footer{ border-top:1px solid var(--line); padding: 56px 0 40px; }
.footer-grid{ display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap; }
.footer-cols{ display:flex; gap:64px; flex-wrap:wrap; }
.footer-col h4{ font-family:var(--font-mono); font-size:11px; letter-spacing:.1em; color:var(--steel); margin-bottom:16px; text-transform:uppercase; }
.footer-col a{ display:block; font-size:14px; color:var(--paper); padding:6px 0; opacity:.85; }
.footer-col a:hover{ opacity:1; color: var(--m-blue); }
.footer-bottom{ margin-top:56px; padding-top:24px; border-top:1px solid var(--line); display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-family:var(--font-mono); font-size:11px; color:var(--steel); letter-spacing:.05em; }

/* -------------------- Reveal utility (GSAP hooks) -------------------- */
.reveal{ opacity:0; transform: translateY(28px); }

/* -------------------- Sub page hero (smaller) -------------------- */
.page-hero{ padding: 180px 0 60px; position:relative; }
.page-hero h1{ font-size: clamp(40px,7vw,88px); }
.page-hero .lede{ color:var(--steel); max-width:56ch; margin-top:18px; font-size:16px; line-height:1.6; }