:root{
  /* ---- EDIT ME: brand colors ---- */
  --paper:      #F1F3F6;   /* page background */
  --surface:    #FFFFFF;   /* card / panel background */
  --ink:        #000000;   /* main text */
  --ink-soft:   #6a32c5;   /* secondary text */
  --line:       #D9DEE5;   /* borders / dividers */
  --accent:     #3452FF;   /* primary brand color (buttons, links) */
  --accent-ink: #FFFFFF;   /* text on top of accent color */
  --stamp:      #6c1091;   /* secondary accent (the "boarding stamp") */
  --ok:         #000000;   /* success color */
  --err:        #E23B3B;   /* error color */

  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px -12px rgba(18,21,28,.18);
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--accent);}
button{font-family:inherit;}

.container{max-width:1080px;margin:0 auto;padding:0 24px;}

/* ---------- Top bar ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(241,243,246,.85);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  max-width:1080px;margin:0 auto;padding:16px 24px;
  display:flex;align-items:center;justify-content:space-between;
}
.logo{
  font-family:var(--font-display);
  font-weight:700;font-size:22px;letter-spacing:-.02em;
  display:flex;align-items:center;gap:8px;
  text-decoration:none;color:var(--ink);
}
.logo .dot{width:9px;height:9px;border-radius:50%;background:var(--stamp);display:inline-block;}
.nav{display:flex;gap:28px;font-size:14px;font-weight:500;}
.nav a{color:var(--ink-soft);text-decoration:none;}
.nav a:hover{color:var(--ink);}

/* ---------- Hero ---------- */
.hero{
  padding:64px 0 32px;
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);font-weight:600;
  display:inline-block;margin-bottom:14px;
}
.hero h1{
  font-family:var(--font-display);
  font-size:clamp(32px,4.2vw,52px);
  line-height:1.05;letter-spacing:-.02em;margin:0 0 18px;
}
.hero p.sub{color:var(--ink-soft);font-size:17px;max-width:44ch;margin:0 0 8px;}
.hero .trust{
  margin-top:22px;display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--ink-soft);
}
.hero .trust span{display:flex;align-items:center;gap:6px;}
.hero .trust b{color:var(--ink);}

/* ---------- Dropzone ---------- */
.dropzone{
  background:var(--surface);
  border:2px dashed var(--line);
  border-radius:var(--radius);
  padding:36px 24px;
  text-align:center;
  box-shadow:var(--shadow);
  transition:border-color .15s ease, transform .15s ease;
  position:relative;
}
.dropzone.drag{border-color:var(--accent);transform:scale(1.01);}
.dropzone .gate-badge{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  color:var(--ink-soft);border:1px solid var(--line);border-radius:20px;
  padding:4px 10px;display:inline-block;margin-bottom:16px;
}
.dz-icon{width:46px;height:46px;margin:0 auto 14px;color:var(--accent);}
.dropzone h3{margin:0 0 6px;font-size:17px;font-family:var(--font-display);}
.dropzone p{margin:0;color:var(--ink-soft);font-size:14px;}
.dropzone .browse-btn{
  background:none;border:none;color:var(--accent);font-weight:700;cursor:pointer;
  text-decoration:underline;font-size:inherit;padding:0;
}
.dropzone .hint{margin-top:14px;font-size:12px;color:var(--ink-soft);opacity:.8;}
.file-chip{
  margin-top:18px;display:inline-flex;align-items:center;gap:10px;
  background:var(--paper);border:1px solid var(--line);border-radius:30px;
  padding:8px 16px;font-size:13px;font-family:var(--font-mono);
}
.file-chip button{background:none;border:none;cursor:pointer;color:var(--ink-soft);font-size:15px;line-height:1;}

/* ---------- Ad slots ---------- */
.ad-slot{
  margin:36px auto;text-align:center;
  max-width:1080px;
}
.ad-slot .ad-label{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-soft);opacity:.55;margin-bottom:6px;
}
.ad-slot ins{margin:0 auto;}

/* ---------- Ticket picker ---------- */
.ticket-picker{padding:20px 0 8px;}
.ticket-picker h2{
  font-family:var(--font-display);font-size:22px;margin:0 0 4px;
}
.ticket-picker .muted{color:var(--ink-soft);font-size:14px;margin:0 0 20px;}
.tabs{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap;}
.tab{
  border:1px solid var(--line);background:var(--surface);
  border-radius:30px;padding:8px 16px;font-size:13px;font-weight:600;
  cursor:pointer;color:var(--ink-soft);
}
.tab.active{background:var(--ink);color:#fff;border-color:var(--ink);}

.ticket-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));
  gap:14px;
}
.ticket{
  position:relative;
  background:var(--surface);border:1px solid var(--line);
  border-radius:10px;padding:16px 16px 14px;cursor:pointer;
  text-align:left;
  transition:border-color .12s ease, transform .12s ease;
}
.ticket:hover{border-color:var(--accent);transform:translateY(-2px);}
.ticket.selected{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent) inset;}
.ticket:after{
  content:"";position:absolute;right:0;top:14px;bottom:14px;width:0;
  border-right:2px dashed var(--line);
}
.ticket .route{
  font-family:var(--font-mono);font-size:15px;font-weight:600;
  display:flex;align-items:center;gap:8px;margin-bottom:6px;
}
.ticket .route .arrow{color:var(--stamp);}
.ticket .note{font-size:12px;color:var(--ink-soft);}
.ticket .gate-no{
  position:absolute;top:14px;right:14px;font-family:var(--font-mono);
  font-size:10px;color:var(--ink-soft);opacity:0;
}

/* ---------- Convert panel ---------- */
.convert-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;margin-top:28px;box-shadow:var(--shadow);
}
.convert-panel .route-display{
  font-family:var(--font-mono);font-size:20px;font-weight:700;
  display:flex;align-items:center;gap:12px;margin-bottom:6px;
}
.convert-panel .route-display .arrow{color:var(--stamp);}
.convert-panel .file-name{color:var(--ink-soft);font-size:13px;margin-bottom:22px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border:none;border-radius:30px;padding:14px 28px;font-weight:700;font-size:15px;
  cursor:pointer;transition:transform .1s ease, opacity .1s ease;
}
.btn:active{transform:scale(.98);}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-download{background:var(--ok);color:#fff;}
.btn-ghost{background:none;color:var(--ink-soft);border:1px solid var(--line);}

.progress-wrap{margin:18px 0;display:none;}
.progress-wrap.show{display:block;}
.progress-track{
  height:8px;border-radius:6px;background:var(--paper);overflow:hidden;border:1px solid var(--line);
}
.progress-bar{height:100%;width:0%;background:var(--accent);transition:width .2s ease;}
.progress-label{font-size:12px;color:var(--ink-soft);margin-top:8px;font-family:var(--font-mono);}

.result{
  margin-top:20px;padding-top:20px;border-top:1px dashed var(--line);
  display:none;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.result.show{display:flex;}
.result .result-info{font-size:14px;}
.result .result-info b{display:block;font-family:var(--font-mono);font-size:15px;}
.arrow-btn{
  width:54px;height:54px;border-radius:50%;
  background:var(--ok);color:#fff;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px -6px rgba(14,165,160,.55);
}
.arrow-btn svg{width:22px;height:22px;}

/* ---------- How it works ---------- */
.how{padding:56px 0 16px;}
.how h2{font-family:var(--font-display);font-size:24px;margin:0 0 24px;}
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.how-step{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:20px;}
.how-step .k{font-family:var(--font-mono);color:var(--stamp);font-size:13px;font-weight:700;margin-bottom:8px;}
.how-step h4{margin:0 0 6px;font-size:15px;}
.how-step p{margin:0;font-size:13px;color:var(--ink-soft);}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--line);margin-top:60px;padding:30px 0;}
footer .foot-inner{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;color:var(--ink-soft);
}
footer a{color:var(--ink-soft);}

/* ---------- Error page ---------- */
.error-page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:var(--paper);text-align:center;padding:24px;
}
.error-card{max-width:460px;}
.error-code{
  font-family:var(--font-mono);color:var(--err);font-weight:700;
  font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px;
}
.error-card h1{font-family:var(--font-display);font-size:30px;margin:0 0 12px;}
.error-card p{color:var(--ink-soft);margin:0 0 26px;}
.error-icon{width:56px;height:56px;color:var(--err);margin:0 auto 20px;}

/* ---------- Toast ---------- */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:12px 20px;border-radius:30px;
  font-size:13px;opacity:0;pointer-events:none;transition:all .25s ease;z-index:100;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ---------- Responsive ---------- */
@media (max-width: 820px){
  .hero{grid-template-columns:1fr;padding-top:36px;}
  .nav{display:none;}
  .how-grid{grid-template-columns:1fr;}
}
@media (max-width: 480px){
  .container{padding:0 16px;}
  .convert-panel{padding:20px;}
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  *{transition:none !important; scroll-behavior:auto !important;}
}