/* ==========================================================================
   ARKA Mobility — dark automotive luxury
   ========================================================================== */
:root{
  --bg:#09090b;
  --bg-2:#0e0e11;
  --panel:#131317;
  --panel-2:#17171c;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --ink:#f5f6f8;
  --ink-soft:#a2a4ad;
  --ink-mute:#6c6e77;
  --red:#e0202c;
  --red-soft:#ff4d57;
  --steel-1:#ffffff;
  --steel-2:#c9ccd2;
  --steel-3:#8b8f97;

  --maxw:1200px;
  --pad:clamp(1.15rem,4vw,2.5rem);
  --sp-section:clamp(4rem,9vw,7.5rem);
  --r:3px;

  --font-display:"Chakra Petch",system-ui,sans-serif;
  --font-body:"Inter",system-ui,sans-serif;

  --ease:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
::selection{background:var(--red);color:#fff}

/* --- ambient background --- */
.bg-fx{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(60% 40% at 78% 0%, rgba(224,32,44,.14), transparent 70%),
    radial-gradient(50% 45% at 0% 30%, rgba(255,255,255,.04), transparent 70%),
    linear-gradient(180deg,#0b0b0e 0%,#09090b 40%);
}
.bg-fx::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(75% 60% at 50% 20%,#000,transparent 90%);
}

/* --- reveal-on-scroll --- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn{
  --btn-bg:var(--ink);--btn-fg:#0a0a0b;--btn-bd:var(--ink);
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-display);font-weight:700;
  font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  padding:.8rem 1.25rem;border:1px solid var(--btn-bd);border-radius:var(--r);
  background:var(--btn-bg);color:var(--btn-fg);cursor:pointer;
  transition:transform .12s var(--ease),background .2s,color .2s,border-color .2s,box-shadow .2s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,0,0,.4)}
.btn:active{transform:translateY(0)}
.btn-sm{padding:.62rem 1rem;font-size:.68rem}
.btn-lg{padding:1rem 1.6rem;font-size:.76rem}
.btn-wa{--btn-bg:transparent;--btn-fg:var(--ink);--btn-bd:var(--line-2)}
.btn-wa:hover{--btn-bg:#25D366;--btn-fg:#0a0a0b;--btn-bd:#25D366}

/* ==========================================================================
   Header
   ========================================================================== */
.site-head{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:1.5rem;
  padding:.85rem var(--pad);
  background:rgba(9,9,11,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.brand{flex:none;display:flex;align-items:center}
.brand-lockup{width:clamp(132px,20vw,168px);filter:drop-shadow(0 2px 10px rgba(0,0,0,.5))}
.site-nav{margin-left:auto;display:flex;gap:1.9rem}
.site-nav a{
  font-family:var(--font-display);font-weight:500;font-size:.74rem;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);
  position:relative;padding:.2rem 0;transition:color .2s;
}
.site-nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-2px;height:1px;
  background:var(--red);transition:right .3s var(--ease);
}
.site-nav a:hover{color:var(--ink)}
.site-nav a:hover::after{right:0}
.site-head .btn{flex:none}
.site-nav + .btn{margin-left:0}
.site-nav ~ .btn{margin-left:0}
@media(max-width:860px){
  .site-nav{display:none}
  .brand-lockup{width:132px}
  .site-head .btn{margin-left:auto}
}

/* ==========================================================================
   Layout primitives
   ========================================================================== */
main{position:relative;z-index:1}
.section{
  max-width:var(--maxw);margin:0 auto;
  padding:var(--sp-section) var(--pad);
}
.section.band{
  max-width:none;
  background:linear-gradient(180deg,var(--bg-2),var(--bg));
  border-block:1px solid var(--line);
}
.section.band > *{max-width:var(--maxw);margin-inline:auto}
.section-head{margin-bottom:clamp(2rem,5vw,3.5rem)}
.kicker{
  font-family:var(--font-display);font-weight:600;font-size:.7rem;
  letter-spacing:.24em;text-transform:uppercase;color:var(--red-soft);
  margin-bottom:.9rem;
}
h2{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(1.7rem,4.4vw,2.9rem);line-height:1.08;
  letter-spacing:-.015em;text-wrap:balance;
}
h3{font-family:var(--font-display);font-weight:600;letter-spacing:.01em}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  max-width:var(--maxw);margin:0 auto;
  padding:clamp(2.5rem,6vw,4.5rem) var(--pad) clamp(3rem,7vw,5rem);
}
.hero-grid{
  width:100%;
  display:grid;grid-template-columns:1.15fr .85fr;
  gap:clamp(1.5rem,4vw,3.5rem);align-items:center;
}
@media(min-width:901px){
  .hero{display:flex;align-items:center;min-height:min(86vh,880px)}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--font-display);font-weight:500;font-size:.72rem;
  letter-spacing:.18em;text-transform:uppercase;color:var(--ink-soft);
  border:1px solid var(--line);border-radius:100px;padding:.42rem .85rem;
}
.eyebrow .tick{width:7px;height:7px;background:var(--red);border-radius:50%;box-shadow:0 0 12px var(--red)}
h1{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(2.15rem,5vw,3.75rem);line-height:1.05;
  letter-spacing:-.02em;margin:1.3rem 0 1.25rem;text-wrap:balance;
}
h1 .accent{
  background:linear-gradient(100deg,var(--steel-1),var(--steel-2) 40%,var(--steel-3) 70%,#fff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  position:relative;
}
h1 .accent::after{
  content:"";position:absolute;left:0;right:12%;bottom:.06em;height:3px;
  background:var(--red);
}
.lede{font-size:clamp(1rem,1.6vw,1.16rem);color:var(--ink-soft);max-width:34rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.9rem 0 1.6rem}
.hero-meta{
  list-style:none;display:flex;flex-wrap:wrap;gap:.5rem 1.4rem;
  padding-top:1.4rem;border-top:1px solid var(--line);
}
.hero-meta li{
  font-family:var(--font-display);font-weight:500;font-size:.74rem;
  letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);
  display:flex;align-items:center;gap:.55rem;
}
.hero-meta li::before{content:"";width:5px;height:5px;background:var(--red);transform:rotate(45deg)}

.hero-visual{
  position:relative;justify-self:center;
  width:100%;max-width:420px;aspect-ratio:1;
  display:grid;place-items:center;
}
.hv-glow{
  position:absolute;inset:6%;border-radius:50%;
  background:radial-gradient(circle at 50% 42%,rgba(224,32,44,.32),rgba(224,32,44,.06) 55%,transparent 72%);
  filter:blur(6px);
}
.hv-ring{position:absolute;border:1px solid rgba(255,255,255,.10);border-radius:50%}
.hv-ring-1{inset:8%;border-top-color:rgba(224,32,44,.45);animation:spin 24s linear infinite}
.hv-ring-2{inset:-4%;border-bottom-color:rgba(255,255,255,.22);animation:spin 40s linear infinite reverse}
.hv-logo{
  position:relative;width:72%;height:auto;border-radius:22%;
  filter:drop-shadow(0 30px 60px rgba(0,0,0,.6));
}
@keyframes spin{to{transform:rotate(360deg)}}

@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{order:-1;max-width:280px}
  .hero-meta{gap:.5rem 1rem}
}

/* ==========================================================================
   Brand marquee
   ========================================================================== */
.marquee-wrap{
  border-block:1px solid var(--line);
  background:var(--bg-2);
  padding:1.6rem 0;
  overflow:hidden;
}
.strip-label{
  text-align:center;font-family:var(--font-display);font-weight:600;
  font-size:.66rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--ink-mute);margin-bottom:1rem;
}
.marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{
  display:flex;gap:2.6rem;width:max-content;
  animation:marquee 42s linear infinite;
}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{
  font-family:var(--font-display);font-weight:600;font-size:1.05rem;
  letter-spacing:.02em;color:var(--ink-soft);white-space:nowrap;
  display:flex;align-items:center;gap:2.6rem;
}
.marquee-track span::after{content:"";width:5px;height:5px;background:var(--red);transform:rotate(45deg);opacity:.7}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ==========================================================================
   Services — bento
   ========================================================================== */
.bento{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;
}
.tile{
  position:relative;border:1px solid var(--line);border-radius:var(--r);
  padding:1.6rem 1.5rem 1.7rem;
  background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(255,255,255,0));
  transition:border-color .25s,transform .25s var(--ease),background .25s;
  overflow:hidden;
}
.tile::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease);
}
.tile:hover{transform:translateY(-4px);border-color:var(--line-2);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.01))}
.tile:hover::before{transform:scaleX(1)}
.tile h3{font-size:1.06rem;margin-bottom:.55rem}
.tile p{color:var(--ink-soft);font-size:.92rem}
.tile-lg{grid-column:span 2;display:flex;flex-direction:column;justify-content:flex-end;min-height:200px;background:linear-gradient(135deg,rgba(224,32,44,.12),rgba(255,255,255,.02))}
.tile-lg h3{font-size:clamp(1.3rem,2.6vw,1.7rem)}
.tile-lg p{font-size:1rem;max-width:42ch}
.tile-no{font-family:var(--font-display);color:var(--red-soft);font-size:1.4rem;margin-bottom:.6rem}
.tile-soon{border-style:dashed}
.tag{
  display:inline-block;font-family:var(--font-display);font-weight:600;
  font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--red-soft);border:1px solid var(--line-2);border-radius:100px;
  padding:.28rem .7rem;margin-bottom:.75rem;
}
@media(max-width:820px){
  .bento{grid-template-columns:1fr 1fr}
  .tile-lg{grid-column:span 2}
}
@media(max-width:520px){
  .bento{grid-template-columns:1fr}
  .tile-lg{grid-column:span 1}
}

/* ==========================================================================
   Coverage
   ========================================================================== */
.band-lede{color:var(--ink-soft);max-width:44rem;font-size:1.05rem;margin-bottom:1.8rem}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:.55rem}
.chips li{
  font-family:var(--font-display);font-weight:500;font-size:.82rem;
  letter-spacing:.03em;color:var(--ink-soft);
  border:1px solid var(--line);border-radius:100px;padding:.5rem .95rem;
  transition:color .2s,border-color .2s,background .2s;
}
.chips li:hover{color:var(--ink);border-color:var(--line-2);background:rgba(255,255,255,.03)}

/* ==========================================================================
   Why
   ========================================================================== */
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.why-item{background:var(--bg);padding:1.8rem 1.7rem}
.why-no{
  font-family:var(--font-display);font-weight:700;font-size:.8rem;
  letter-spacing:.1em;color:var(--red-soft);display:block;margin-bottom:.8rem;
}
.why-item h3{font-size:1.1rem;margin-bottom:.5rem}
.why-item p{color:var(--ink-soft);font-size:.93rem}
@media(max-width:640px){.why-grid{grid-template-columns:1fr}}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq{display:grid;gap:.55rem;max-width:52rem}
.faq details{
  border:1px solid var(--line);border-radius:var(--r);
  padding:1rem 1.2rem;background:rgba(255,255,255,.015);transition:border-color .2s;
}
.faq details[open]{border-color:var(--line-2)}
.faq summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem;
  font-family:var(--font-display);font-weight:600;font-size:.95rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--red-soft);font-weight:700;transition:transform .2s}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--ink-soft);font-size:.92rem;margin-top:.8rem}

/* ==========================================================================
   Quote
   ========================================================================== */
.quote-panel{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(1.5rem,4vw,3.5rem);
  border:1px solid var(--line-2);border-radius:var(--r);
  background:linear-gradient(180deg,var(--panel),var(--bg-2));
  padding:clamp(1.7rem,4vw,3rem);
  box-shadow:0 40px 90px rgba(0,0,0,.5);
}
.quote-copy h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:.9rem}
.quote-copy > p{color:var(--ink-soft)}
.quote-contact{list-style:none;margin-top:1.7rem;display:grid;gap:1rem}
.quote-contact li{display:grid;gap:.2rem}
.quote-contact span{
  font-family:var(--font-display);font-size:.62rem;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--ink-mute);
}
.quote-contact address{font-style:normal;color:var(--ink)}
.quote-contact a{color:var(--ink);border-bottom:1px solid var(--line-2);width:max-content;padding-bottom:1px;transition:border-color .2s}
.quote-contact a:hover{border-color:var(--ink)}

.quote-form{display:grid;grid-template-columns:1fr 1fr;gap:1rem 1.1rem;align-content:start}
.field{display:grid;gap:.4rem}
.field--full{grid-column:1/-1}
.field label{
  font-family:var(--font-display);font-size:.64rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft);
}
.field .opt{color:var(--ink-mute);letter-spacing:.04em}
.field input,.field select,.field textarea{
  width:100%;background:#0b0b0e;border:1px solid var(--line-2);border-radius:var(--r);
  color:var(--ink);font:inherit;font-size:.95rem;padding:.72rem .85rem;
  transition:border-color .2s,background .2s;
}
.field textarea{resize:vertical;min-height:3rem}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--red-soft);background:#101014}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-soft) 50%),linear-gradient(135deg,var(--ink-soft) 50%,transparent 50%);background-position:calc(100% - 18px) 55%,calc(100% - 13px) 55%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

.wa-inline{
  display:flex;align-items:center;justify-content:center;gap:.6rem;
  background:#25D366;color:#0a0a0b;
  font-family:var(--font-display);font-weight:700;font-size:.78rem;
  letter-spacing:.08em;text-transform:uppercase;
  padding:.95rem 1.1rem;border-radius:var(--r);transition:opacity .2s,transform .1s;
}
.wa-inline:hover{opacity:.9}
.wa-inline:active{transform:translateY(1px)}
.wa-or{text-align:center;font-family:var(--font-display);font-size:.64rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-mute);margin:-.15rem 0 .15rem}

.form-foot{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:.3rem}
#submitBtn:disabled{opacity:.5;cursor:not-allowed}
.form-msg{font-size:.86rem;color:var(--ink-soft)}
.form-msg.ok{color:#57d08a}
.form-msg.err{color:#ff6b6b}
.field.invalid input,.field.invalid select{border-color:#ff6b6b}

@media(max-width:840px){
  .quote-panel{grid-template-columns:1fr}
}
@media(max-width:520px){
  .quote-form{grid-template-columns:1fr}
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-foot{
  position:relative;z-index:1;
  border-top:1px solid var(--line);background:var(--bg-2);
  padding:clamp(2.5rem,6vw,4rem) var(--pad) 2rem;
}
.foot-grid{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem;
}
.foot-brand img{width:min(200px,60vw);margin-bottom:1rem}
.foot-brand p{color:var(--ink-soft);font-size:.9rem;max-width:34ch}
.foot-col h4{
  font-family:var(--font-display);font-weight:600;font-size:.66rem;
  letter-spacing:.2em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:1rem;
}
.foot-col a,.foot-col address{
  display:block;font-style:normal;color:var(--ink-soft);font-size:.9rem;
  padding:.28rem 0;transition:color .2s;
}
.foot-col a:hover{color:var(--ink)}
.foot-base{
  max-width:var(--maxw);margin:2.5rem auto 0;padding-top:1.5rem;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:.4rem;
  font-size:.78rem;color:var(--ink-mute);
}
@media(max-width:760px){
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1/-1}
}
@media(max-width:460px){.foot-grid{grid-template-columns:1fr}}

/* ==========================================================================
   WhatsApp float
   ========================================================================== */
.wa-float{
  position:fixed;right:1rem;bottom:1rem;z-index:60;
  display:flex;align-items:center;gap:.55rem;
  background:#25D366;color:#0a0a0b;
  font-family:var(--font-display);font-weight:700;font-size:.72rem;
  letter-spacing:.1em;text-transform:uppercase;
  padding:.75rem .95rem;border-radius:100px;
  box-shadow:0 12px 34px rgba(0,0,0,.45);
  transition:transform .15s var(--ease),box-shadow .2s;
}
.wa-float:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(37,211,102,.4)}
.wa-float svg{flex:none}
@media(max-width:560px){
  .wa-float span{display:none}
  .wa-float{padding:.85rem;border-radius:50%}
}

/* ==========================================================================
   Motion preferences
   ========================================================================== */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}