/* ============================================================
   Yatrain — design tokens
   ============================================================ */
:root{
  --ink:        #0A0F1A;   /* base background, near-black navy */
  --panel:      #10192B;   /* raised panel / section background */
  --panel-2:    #16223A;   /* card / board background */
  --line:       #24334F;   /* hairlines, dividers */
  --steel:      #7C8AA3;   /* secondary text */
  --fog:        #E9EDF5;   /* primary text on dark */
  --amber:      #FF9F3E;   /* signal-amber accent — caution/CTA */
  --amber-dim:  #B96E23;
  --green:      #33C48B;   /* signal-green — on-time / positive */

  --font-display: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body:    "Manrope", "Segoe UI", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", "Courier New", monospace;

  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
}

body{
  margin:0;
  background:var(--ink);
  color:var(--fog);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%; display:block;}
a{color:inherit;}

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.08;
  letter-spacing:-0.01em;
  margin:0;
}

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

.visually-hidden{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

::selection{ background:var(--amber); color:var(--ink); }

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

/* ============================================================
   Nav
   ============================================================ */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:50;
  padding:18px 0;
  background:linear-gradient(to bottom, rgba(10,15,26,0.85), rgba(10,15,26,0));
  backdrop-filter:blur(2px);
}
.nav.is-scrolled{
  background:rgba(10,15,26,0.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.nav .wrap{ display:flex; align-items:center; justify-content:space-between; }
.brand{
  display:flex; align-items:center; gap:10px;
  font-family:var(--font-display); font-weight:700; font-size:1.15rem;
  text-decoration:none; color:var(--fog);
}
.brand-mark{
  width:22px; height:22px; flex:none;
}
.brand-mark .rail{ stroke:var(--amber); stroke-width:2; fill:none; }
.brand-mark .dot{ fill:var(--amber); }

.nav-links{ display:flex; align-items:center; gap:32px; list-style:none; margin:0; padding:0; }
.nav-links a{
  text-decoration:none; color:var(--steel); font-size:0.94rem;
  transition:color .18s ease;
}
.nav-links a:hover{ color:var(--fog); }
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:9px;

  background:#FFFFFF;
  color:#071B36;

  font-weight:650;
  font-size:.88rem;
  letter-spacing:-.01em;

  padding:10px 18px;
  border-radius:10px;

  text-decoration:none;

  box-shadow:0 6px 18px rgba(0,0,0,.16);

  transition:all .2s cubic-bezier(.2,.8,.2,1);
}

.nav-cta svg{
  width:18px;
  height:18px;
  flex:none;
}

.nav-cta:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(0,0,0,.22);
}

.nav-cta:active{
  transform:translateY(0);
}

.nav-toggle{ display:none; }

/* ============================================================
   Hero — parallax
   ============================================================ */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;
  align-items:flex-end;
  overflow:hidden;
  isolation:isolate;
}
.hero-media{
  position:absolute; inset:-8% 0 0 0;
  z-index:-2;
  will-change:transform;
}
.hero-media img{
  width:100%; height:auto; object-fit:cover; object-position:60% 40%;
}
.hero-scrim{
  position:absolute; inset:0; z-index:-1;
  background:
    linear-gradient(180deg, rgba(8,12,22,.35) 0%, rgba(8,12,22,.35) 30%, rgba(8,10,17,.92) 92%),
    linear-gradient(90deg, rgba(8,10,17,.88) 0%, rgba(8,10,17,.35) 46%, rgba(8,10,17,.15) 100%);
}
.hero .wrap{
  position:relative;
  width:100%;
  padding-bottom:clamp(56px, 8vw, 104px);
  padding-top:160px;
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:48px;
  align-items:end;
}
.hero-eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:0.85rem; color:var(--steel);
  margin-bottom:18px;
}
.status-dot{
  width:7px; height:7px; border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 3px rgba(51,196,139,.18);
}
.hero h1{
  font-size:clamp(2.4rem, 5.2vw, 4.2rem);
  color:#fff;
  max-width:14ch;
}
.hero-sub{
  margin-top:22px;
  max-width:46ch;
  color:var(--steel);
  font-size:1.08rem;
}
.hero-actions{
  display:flex; align-items:center; gap:18px;
  margin-top:34px; flex-wrap:wrap;
}
.btn-primary{
  display:inline-flex; align-items:center; gap:10px;
  background:var(--amber); color:#1A1102;
  font-weight:700; font-family:var(--font-display);
  padding:14px 26px; border-radius:10px;
  text-decoration:none; font-size:1rem;
  transition:transform .16s ease, box-shadow .16s ease;
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 14px 28px -10px rgba(255,159,62,.5); }
.btn-ghost{
  display:inline-flex; align-items:center; gap:8px;
  color:var(--fog); text-decoration:none; font-size:0.98rem;
  border-bottom:1px solid var(--line); padding-bottom:3px;
  transition:border-color .16s ease, color .16s ease;
}
.btn-ghost:hover{ border-color:var(--amber); color:var(--amber); }

/* Live status card floating in hero */
.hero-card{
  justify-self:end;
  width:100%; max-width:300px;
  background:rgba(16,25,43,.72);
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px;
  padding:20px 20px 18px;
  backdrop-filter:blur(14px);
  box-shadow:0 30px 60px -25px rgba(0,0,0,.6);
}
.hero-card-row{ display:flex; justify-content:space-between; align-items:center; }
.hero-card-train{ font-family:var(--font-mono); font-size:0.78rem; color:var(--steel); letter-spacing:.02em; }
.hero-card-status{
  font-size:0.72rem; font-weight:700; color:var(--green);
  display:flex; align-items:center; gap:6px;
}
.hero-card h3{ font-size:1rem; color:#fff; margin-top:10px; }
.hero-card-route{ color:var(--steel); font-size:0.86rem; margin-top:4px; }
.hero-track{ margin-top:18px; }
.hero-track-bar{
  position:relative; height:3px; background:var(--line); border-radius:2px;
}
.hero-track-fill{
  position:absolute; left:0; top:0; height:100%; width:38%;
  background:var(--amber); border-radius:2px;
}
.hero-track-dot{
  position:absolute; left:38%; top:50%; transform:translate(-50%,-50%);
  width:11px; height:11px; border-radius:50%;
  background:var(--amber); box-shadow:0 0 0 4px rgba(255,159,62,.22);
}
.hero-track-labels{
  display:flex; justify-content:space-between;
  margin-top:9px; font-size:0.72rem; color:var(--steel);
}

.scroll-cue{
  position:absolute; bottom:26px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:8px;
  color:var(--steel); font-size:0.72rem;
  opacity:.85;
}
.scroll-cue .line{
  width:1px; height:34px; background:linear-gradient(var(--steel), transparent);
  animation:cue-pulse 2.2s ease-in-out infinite;
}
@keyframes cue-pulse{
  0%,100%{ opacity:.25; } 50%{ opacity:1; }
}

/* ============================================================
   Departure board strip
   ============================================================ */
.board{
  background:var(--panel);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:56px 0;
}
.board-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.board-cell{
  background:var(--panel-2);
  padding:26px 24px;
}
.board-cell .label{
  font-size:0.74rem; color:var(--steel);
  text-transform:uppercase; letter-spacing:.08em;
}
.board-cell .value{
  font-family:var(--font-mono);
  font-size:1.5rem; font-weight:600;
  color:var(--fog); margin-top:10px;
  letter-spacing:.02em;
}
.board-cell .value.amber{ color:var(--amber); }
.board-cell .value.green{ color:var(--green); }

/* ============================================================
   Section shell
   ============================================================ */
section{ position:relative; }
.section-pad{ padding:clamp(72px, 10vw, 140px) 0; }
.section-head{
  max-width:640px;
  margin-bottom:clamp(48px, 6vw, 88px);
}
.section-head h2{
  font-size:clamp(1.9rem, 3.4vw, 2.7rem);
  color:#fff;
}
.section-head p{
  color:var(--steel);
  font-size:1.05rem;
  margin-top:16px;
  max-width:50ch;
}

/* ============================================================
   Track rail — runs through the features list
   ============================================================ */
.rail-list{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:0;
}
.rail-list::before{
  content:"";
  position:absolute;
  left:23px; top:14px; bottom:14px;
  width:2px;
  background:var(--line);
}
.rail-item{
  position:relative;
  display:grid;
  grid-template-columns:48px 1fr;
  gap:28px;
  padding:36px 0;
  border-bottom:1px solid var(--line);
}
.rail-item:last-child{ border-bottom:none; }
.rail-node{
  position:relative; z-index:1;
  width:48px; height:48px; border-radius:50%;
  background:var(--panel-2);
  border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  color:var(--amber);
}
.rail-node svg{ width:20px; height:20px; }
.rail-body-grid{
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:36px;
  align-items:center;
}
.rail-copy h3{
  font-size:1.35rem; color:#fff;
}
.rail-copy p{
  color:var(--steel); margin-top:10px; max-width:44ch;
}
.rail-visual{
  position:relative;
  border-radius:14px;
  overflow:hidden;
  background:var(--panel-2);
  border:1px solid var(--line);
  padding:22px;
  will-change:transform;
}
.mini-status{
  display:flex; justify-content:space-between; align-items:center;
  font-family:var(--font-mono); font-size:0.78rem; color:var(--steel);
}
.mini-status b{ color:var(--fog); font-weight:600; }
.mini-alert{
  margin-top:14px; padding:12px 14px; border-radius:10px;
  background:rgba(255,159,62,.08); border:1px solid rgba(255,159,62,.24);
  font-size:0.86rem; color:#F3D3AC;
}
.mini-map{
  margin-top:14px; height:74px; border-radius:8px;
  background:
    repeating-linear-gradient(90deg, transparent, transparent 22px, var(--line) 22px, var(--line) 23px),
    var(--ink);
  position:relative; overflow:hidden;
}
.mini-map .train-dot{
  position:absolute; top:50%; left:34%; transform:translate(-50%,-50%);
  width:10px; height:10px; border-radius:50%;
  background:var(--amber); box-shadow:0 0 0 5px rgba(255,159,62,.18);
}
.mini-coach-grid{
  margin-top:14px; display:grid; grid-template-columns:repeat(6,1fr); gap:6px;
}
.mini-coach-grid span{
  height:26px; border-radius:5px; background:var(--ink);
  border:1px solid var(--line);
  font-family:var(--font-mono); font-size:0.62rem; color:var(--steel);
  display:flex; align-items:center; justify-content:center;
}
.mini-coach-grid span.active{
  background:rgba(51,196,139,.14); border-color:rgba(51,196,139,.4); color:var(--green);
}
.mini-history{
  margin-top:14px; display:flex; flex-direction:column; gap:8px;
}
.mini-history .row{
  display:flex; justify-content:space-between;
  font-size:0.82rem; color:var(--steel);
  padding-bottom:8px; border-bottom:1px dashed var(--line);
}
.mini-history .row b{ color:var(--fog); font-weight:600; }

/* ============================================================
   Phone showcase — parallax
   ============================================================ */
.showcase{
  background:var(--panel);
  overflow:hidden;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.showcase .wrap{
  display:grid;
  grid-template-columns:0.95fr 1.05fr;
  gap:56px;
  align-items:center;
}
.showcase-copy h2{
  font-size:clamp(1.9rem, 3.4vw, 2.6rem); color:#fff;
}
.showcase-copy p{ color:var(--steel); margin-top:18px; max-width:42ch; font-size:1.05rem; }
.showcase-points{
  list-style:none; margin:28px 0 0; padding:0;
  display:flex; flex-direction:column; gap:14px;
}
.showcase-points li{
  display:flex; gap:12px; align-items:flex-start;
  color:var(--fog); font-size:0.98rem;
}
.showcase-points svg{ flex:none; margin-top:3px; width:16px; height:16px; color:var(--green); }
.showcase-media{
  position:relative;
  display:flex; justify-content:center;
  will-change:transform;
}
.showcase-media img{
  max-width:290px;
  filter:drop-shadow(0 40px 60px rgba(0,0,0,.5));
}
.showcase-media::before{
  content:"";
  position:absolute; inset:-20% -10%;
  background:radial-gradient(circle at 50% 40%, rgba(255,159,62,.14), transparent 60%);
  z-index:-1;
}

/* ============================================================
   Final CTA — parallax band
   ============================================================ */
.cta-band{
  position:relative;
  overflow:hidden;
  isolation:isolate;
}
.cta-media{
  position:absolute; inset:-10% 0;
  z-index:-2; will-change:transform;
}
.cta-media img{ width:100%; height:120%; object-fit:cover; object-position:20% 60%; filter:grayscale(.25); }
.cta-scrim{
  position:absolute; inset:0; z-index:-1;
  background:linear-gradient(180deg, rgba(8,10,17,.94), rgba(8,10,17,.86) 60%, rgba(8,10,17,.97));
}
.cta-inner{
  padding:clamp(90px,12vw,150px) 0;
  text-align:center;
}
.cta-inner h2{
  font-size:clamp(2rem, 4.4vw, 3.2rem);
  color:#fff; max-width:16ch; margin:0 auto;
}
.cta-inner p{
  color:var(--steel); max-width:44ch; margin:18px auto 0; font-size:1.05rem;
}
.store-row{
  display:flex; gap:16px; justify-content:center; margin-top:38px; flex-wrap:wrap;
}
.store-btn{
  display:inline-flex; align-items:center; gap:10px;
  border:1px solid var(--line); background:rgba(255,255,255,.02);
  color:var(--fog); text-decoration:none;
  padding:12px 20px; border-radius:10px; font-size:0.94rem;
  transition:border-color .16s ease, background .16s ease, transform .16s ease;
}
.store-btn:hover{ border-color:var(--amber); background:rgba(255,159,62,.06); transform:translateY(-2px); }
.store-btn svg{ width:18px; height:18px; color:var(--amber); }

/* ============================================================
   Footer
   ============================================================ */
footer{
  background:var(--ink);
  border-top:1px solid var(--line);
  padding:40px 0;
}
footer .wrap{
  display:flex; justify-content:space-between; align-items:center;
  flex-wrap:wrap; gap:16px;
}
.footer-brand{ display:flex; align-items:center; gap:10px; color:var(--steel); font-size:0.9rem; }
.footer-links{ display:flex; gap:20px 24px; list-style:none; margin:0; padding:0; flex-wrap:wrap; }
.footer-links a{ color:var(--steel); text-decoration:none; font-size:0.88rem; }
.footer-links a:hover{ color:var(--fog); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px){
  .hero .wrap{ grid-template-columns:1fr; }
  .hero-card{ justify-self:start; max-width:340px; }
  .board-grid{ grid-template-columns:1fr; }
  .rail-body-grid{ grid-template-columns:1fr; }
  .showcase .wrap{ grid-template-columns:1fr; }
  .showcase-media{ order:-1; }
  .nav-links{ display:none; }
}
@media (max-width: 560px){
  .hero .wrap{ padding-top:120px; }
  .hero-eyebrow{ margin-bottom:12px; }
}