/* =========================================================
   RioAvia Flight Support — Design System
   ink        #03292A  near-black teal, text & dark surfaces
   brand      #07B08F  RioAvia teal, primary accent
   brand-deep #058267  hover / pressed states
   gauge      #E8A33D  fuel-gauge amber, used ONLY for price/urgency signals
   paper      #F6F8F7  page background
   mist       #E3EAE7  card / divider surfaces
   white      #FFFFFF
   ========================================================= */

:root{
  --ink: #03292A;
  --ink-70: rgba(3,41,42,.7);
  --ink-45: rgba(3,41,42,.45);
  --brand: #07B08F;
  --brand-deep: #058267;
  --brand-tint: #E4F5F0;
  --gauge: #E8A33D;
  --gauge-tint: #FCEEDA;
  --paper: #F6F8F7;
  --mist: #E3EAE7;
  --white: #FFFFFF;
  --line: rgba(3,41,42,.12);

  --display: "Space Grotesk", "Inter", sans-serif;
  --body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --container: 1180px;
  --radius: 4px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--body);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  line-height:1.55;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{
  font-family:var(--display);
  font-weight:600;
  line-height:1.08;
  letter-spacing:-0.01em;
  margin:0 0 .5em;
}
p{ margin:0 0 1em; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}

.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--brand);
  display:inline-block;
}
.eyebrow.on-dark{ color:#8FE3CC; }
.eyebrow.on-dark::before{ background:#8FE3CC; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius);
  font-weight:600;
  font-size:14.5px;
  border:1px solid transparent;
  white-space:nowrap;
  transition:background .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
}
.btn-primary{ background:var(--brand); color:var(--white); }
.btn-primary:hover{ background:var(--brand-deep); transform:translateY(-1px); }
.btn-ghost-dark{ border-color:rgba(255,255,255,.35); color:var(--white); }
.btn-ghost-dark:hover{ border-color:#fff; background:rgba(255,255,255,.08); }
.btn-ghost{ border-color:var(--line); color:var(--ink); }
.btn-ghost:hover{ border-color:var(--ink); }
.btn-amber{ background:var(--gauge); color:var(--ink); }
.btn-amber:hover{ background:#d6912e; transform:translateY(-1px); }
.btn-sm{ padding:10px 18px; font-size:13.5px; }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(246,248,247,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:82px; position:relative;
}
.brand-mark{ flex:none; }
.brand-mark img{ height:34px; width:auto; }
.main-nav{ display:flex; align-items:center; gap:26px; }
.main-nav ul{ display:flex; gap:22px; align-items:center; }
.main-nav a{
  font-size:14px; font-weight:600; color:var(--ink-70);
  position:relative; padding:6px 0; white-space:nowrap;
}
.main-nav a:hover, .main-nav a.active{ color:var(--ink); }
.main-nav a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px; background:var(--brand);
}
.nav-mobile-cta{ display:none; }
.nav-toggle{
  display:none; flex-direction:column; justify-content:center; align-items:stretch;
  gap:5px; width:34px; height:34px; padding:0; border:none; background:none; cursor:pointer; flex:none;
}
.nav-toggle span{
  display:block; height:2px; width:100%; background:var(--ink); border-radius:2px;
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
.header-actions{ display:flex; align-items:center; gap:18px; }
.header-actions .phone-link{ font-family:var(--mono); font-size:13px; color:var(--ink-70); }

/* language switcher */
.lang-switch{ position:relative; display:inline-flex; align-items:center; flex:none; }
.lang-switch::after{
  content:"▾"; position:absolute; right:11px; top:50%; transform:translateY(-50%);
  font-size:9px; color:var(--ink-45); pointer-events:none;
}
.lang-switch select{
  appearance:none; -webkit-appearance:none; -moz-appearance:none;
  font-family:var(--mono); font-size:12px; font-weight:600; letter-spacing:.03em;
  color:var(--ink-70); background:var(--white); border:1px solid var(--line);
  border-radius:20px; padding:7px 26px 7px 14px; cursor:pointer; line-height:1.2;
}
.lang-switch select:hover{ border-color:var(--ink-45); }
.lang-switch select:focus{ outline:2px solid var(--brand); outline-offset:2px; }
.on-dark .lang-switch select{ background:rgba(255,255,255,.08); border-color:rgba(255,255,255,.25); color:#fff; }

/* dropdown */
.has-dropdown{ position:relative; }
.dropdown{
  position:absolute; top:100%; left:-14px; padding-top:14px;
  opacity:0; visibility:hidden; transform:translateY(4px);
  transition:opacity .15s ease, transform .15s ease, visibility .15s ease;
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown{
  opacity:1; visibility:visible; transform:translateY(0);
}
.dropdown-inner{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  min-width:240px; padding:8px; box-shadow:0 18px 40px -12px rgba(3,41,42,.18);
}
.dropdown-inner a{
  display:flex; flex-direction:column; gap:2px;
  padding:11px 14px; border-radius:3px; font-size:14px; font-weight:600; color:var(--ink);
}
.dropdown-inner a:hover{ background:var(--brand-tint); }
.dropdown-inner a span{ font-family:var(--mono); font-size:11px; font-weight:500; color:var(--brand); letter-spacing:.06em; }

/* ---------- Flight strip (signature element) ---------- */
.strip{
  display:flex; align-items:center; gap:14px;
  font-family:var(--mono);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  background:var(--white);
  padding:12px 16px;
  border-radius:2px;
}
.strip .strip-code{ font-weight:700; font-size:13px; letter-spacing:.04em; color:var(--ink); }
.strip .strip-route{ font-size:12.5px; color:var(--ink-70); }
.strip .strip-status{ margin-left:auto; font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--brand-deep); }

.strip-board{
  border-top:1px solid rgba(255,255,255,.14);
  border-bottom:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  display:flex; flex-wrap:wrap; justify-content:center;
}
.tick{
  display:flex; align-items:center; gap:10px;
  font-family:var(--mono); font-size:12.5px; color:rgba(255,255,255,.82);
  padding:13px 26px; border-right:1px solid rgba(255,255,255,.14);
  white-space:nowrap;
}
.tick:last-child{ border-right:none; }
.tick b{ color:#fff; }
.tick .dot{ width:5px; height:5px; border-radius:50%; background:var(--brand); flex:none; }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  color:#fff;
  background:var(--ink);
  overflow:hidden;
}
.hero-media{
  position:absolute; inset:0;
  background-size:cover; background-position:center;
}
.hero-media::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(3,41,42,.72) 0%, rgba(3,41,42,.86) 55%, #03292A 100%);
}
.hero-inner{ position:relative; padding:120px 0 56px; }
.hero h1{ font-size:clamp(38px,5.4vw,64px); max-width:15ch; color:#fff; }
.hero .lede{ font-size:18px; max-width:52ch; color:rgba(255,255,255,.82); }
.hero-ctas{ display:flex; gap:14px; margin:30px 0 10px; flex-wrap:wrap; }

/* ---------- Section scaffolding ---------- */
section{ padding:96px 0; }
.section-tight{ padding:64px 0; }
.section-head{ max-width:640px; margin-bottom:48px; }
.section-head h2{ font-size:clamp(28px,3.4vw,40px); }
.section-head p{ font-size:16.5px; color:var(--ink-70); }
.bg-ink{ background:var(--ink); color:#fff; }
.bg-ink .section-head p{ color:rgba(255,255,255,.72); }
.bg-mist{ background:var(--mist); }

/* ---------- Stat strips row ---------- */
.stat-row{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.stat-row.on-dark{ background:rgba(255,255,255,.12); border-color:rgba(255,255,255,.12); }
.stat-cell{ background:var(--white); padding:26px 24px; }
.on-dark .stat-cell{ background:var(--ink); }
.stat-cell .num{ font-family:var(--display); font-size:34px; font-weight:600; color:var(--brand); }
.on-dark .stat-cell .num{ color:#8FE3CC; }
.stat-cell .label{ font-family:var(--mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-70); margin-top:6px; }
.on-dark .stat-cell .label{ color:rgba(255,255,255,.6); }

/* ---------- Service cards ---------- */
.card-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.card-grid > *:nth-child(4):last-child{ grid-column:2; }
.service-card{
  background:var(--white); border:1px solid var(--line);
  border-radius:var(--radius); overflow:hidden;
  display:flex; flex-direction:column;
  transition:box-shadow .18s ease, transform .18s ease;
}
.service-card:hover{ box-shadow:0 20px 44px -20px rgba(3,41,42,.28); transform:translateY(-3px); }
.service-card .strip{ border-radius:0; border-left:none; border-bottom:1px solid var(--line); }
.service-card .card-body{ padding:26px 24px 24px; flex:1; display:flex; flex-direction:column; }
.service-card h3{ font-size:21px; margin-bottom:10px; }
.service-card p{ color:var(--ink-70); font-size:14.5px; flex:1; }
.service-card .card-link{
  font-size:13.5px; font-weight:700; color:var(--brand-deep);
  display:inline-flex; align-items:center; gap:6px; margin-top:14px;
}
.service-card .card-link:hover{ gap:10px; }

/* ---------- Feature list ---------- */
.check-list li{
  display:flex; gap:12px; padding:13px 0; border-bottom:1px solid var(--line);
  font-size:15px;
}
.check-list li:last-child{ border-bottom:none; }
.check-list .mark{ color:var(--brand); font-weight:700; flex:none; font-family:var(--mono); }

.two-col{ display:grid; grid-template-columns:1.05fr .95fr; gap:64px; align-items:center; }
.two-col img{ border-radius:var(--radius); }

/* ---------- Pricing / fuel spotlight ---------- */
.gauge-panel{
  background:linear-gradient(135deg,#083c3d,#03292A);
  color:#fff; border-radius:6px; padding:48px;
  display:grid; grid-template-columns:1.2fr .8fr; gap:40px; align-items:center;
  position:relative; overflow:hidden;
}
.gauge-panel::before{
  content:""; position:absolute; right:-60px; top:-60px; width:280px; height:280px;
  border-radius:50%; background:radial-gradient(circle, rgba(232,163,61,.25), transparent 70%);
}
.gauge-tag{
  display:inline-flex; align-items:center; gap:8px;
  background:var(--gauge-tint); color:#8a5a15; font-family:var(--mono); font-size:11.5px;
  text-transform:uppercase; letter-spacing:.08em; padding:6px 12px; border-radius:20px; margin-bottom:16px;
}
.gauge-tag .dot{ width:6px; height:6px; border-radius:50%; background:var(--gauge); }
.gauge-panel h2{ color:#fff; font-size:clamp(26px,3vw,34px); }
.gauge-panel p{ color:rgba(255,255,255,.78); }
.gauge-figures{ display:flex; flex-direction:column; gap:18px; position:relative; }
.gauge-figure{ border-top:1px solid rgba(255,255,255,.15); padding-top:14px; }
.gauge-figure:first-child{ border-top:none; padding-top:0; }
.gauge-figure .num{ font-family:var(--display); font-size:30px; color:var(--gauge); }
.gauge-figure .lbl{ font-family:var(--mono); font-size:11.5px; color:rgba(255,255,255,.65); text-transform:uppercase; letter-spacing:.08em; }

/* ---------- Steps ---------- */
.step-strip{ display:flex; flex-direction:column; gap:14px; }
.step{
  display:grid; grid-template-columns:96px 1fr; gap:22px;
  border:1px solid var(--line); background:var(--white);
  border-radius:2px; padding:20px 22px;
}
.step .code{ font-family:var(--mono); font-size:12.5px; color:var(--brand-deep); border-right:1px solid var(--line); padding-right:18px; align-self:start; }
.step h4{ font-size:17px; margin-bottom:6px; }
.step p{ font-size:14.5px; color:var(--ink-70); margin:0; }

/* ---------- Form ---------- */
.form-panel{ background:var(--white); border:1px solid var(--line); border-radius:6px; padding:40px; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:12.5px; font-weight:700; text-transform:uppercase; letter-spacing:.05em; color:var(--ink-70); margin-bottom:7px; font-family:var(--mono); }
.field input, .field select, .field textarea{
  width:100%; border:1px solid var(--line); background:var(--paper);
  padding:12px 14px; border-radius:3px; font-family:var(--body); font-size:14.5px; color:var(--ink);
}
.field textarea{ resize:vertical; min-height:110px; }
.field input:focus, .field select:focus, .field textarea:focus{
  outline:2px solid var(--brand); outline-offset:1px; background:#fff;
}
.form-note{ font-size:13px; color:var(--ink-45); margin-top:14px; }
.form-success{
  display:none; background:var(--brand-tint); border:1px solid var(--brand); color:var(--brand-deep);
  padding:14px 16px; border-radius:4px; font-size:14px; margin-top:16px; font-weight:600;
}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink); color:#fff; border-radius:6px; padding:56px;
  display:flex; align-items:center; justify-content:space-between; gap:30px; flex-wrap:wrap;
}
.cta-band h2{ color:#fff; font-size:28px; margin-bottom:6px; }
.cta-band p{ color:rgba(255,255,255,.7); margin:0; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink); color:rgba(255,255,255,.65); padding-top:64px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:48px; border-bottom:1px solid rgba(255,255,255,.12); }
.footer-grid img{ height:30px; margin-bottom:16px; }
.footer-grid p{ font-size:13.5px; color:rgba(255,255,255,.55); max-width:32ch; }
.footer-col h5{ font-family:var(--mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.08em; color:rgba(255,255,255,.4); margin-bottom:16px; }
.footer-col li{ margin-bottom:11px; font-size:14px; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; padding:22px 0; font-size:12.5px; color:rgba(255,255,255,.4); flex-wrap:wrap; gap:10px; }
.footer-bottom a:hover{ color:#fff; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero{ padding:64px 0 46px; border-bottom:1px solid var(--line); }
.page-hero h1{ font-size:clamp(32px,4vw,46px); max-width:18ch; }
.page-hero .lede{ font-size:17px; color:var(--ink-70); max-width:60ch; }
.breadcrumb{ font-family:var(--mono); font-size:12px; color:var(--ink-45); margin-bottom:18px; text-transform:uppercase; letter-spacing:.06em; }
.breadcrumb a:hover{ color:var(--brand-deep); }

/* ---------- utility ---------- */
.mt-0{ margin-top:0; }
.center{ text-align:center; margin-left:auto; margin-right:auto; }
.badge-row{ display:flex; gap:10px; flex-wrap:wrap; margin-top:18px; }
.pill{
  font-family:var(--mono); font-size:11.5px; text-transform:uppercase; letter-spacing:.06em;
  border:1px solid var(--line); padding:7px 12px; border-radius:20px; color:var(--ink-70);
}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .card-grid{ grid-template-columns:1fr 1fr; }
  .card-grid > *:nth-child(4):last-child{ grid-column:auto; }
  .two-col{ grid-template-columns:1fr; gap:34px; }
  .footer-grid{ grid-template-columns:1fr 1fr; row-gap:32px; }
  .gauge-panel{ grid-template-columns:1fr; }
  .stat-row{ grid-template-columns:1fr 1fr; }
}
@media (max-width:760px){
  .nav-toggle{ display:flex; }
  .header-actions{ gap:10px; }
  .header-actions .phone-link{ display:none; }
  .header-actions .btn-primary.btn-sm{ display:none; }
  .lang-switch select{ font-size:11px; padding:6px 22px 6px 10px; }
  .lang-switch::after{ right:9px; }
  .nav-mobile-cta{ display:block; margin-top:10px; padding-top:16px; border-top:1px solid var(--line); }
  .nav-mobile-cta .btn{ display:block; text-align:center; }
  .main-nav{
    position:absolute; top:100%; left:0; right:0;
    max-height:0; overflow:hidden;
    background:var(--white); border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px -12px rgba(3,41,42,.18);
    transition:max-height .25s ease;
  }
  .main-nav.nav-open{ max-height:70vh; overflow-y:auto; }
  .main-nav ul{ flex-direction:column; align-items:stretch; gap:0; padding:8px 24px 22px; }
  .main-nav li{ width:100%; }
  .main-nav a{ display:block; padding:13px 0; white-space:normal; }
  .main-nav a.active::after{ display:none; }
  .has-dropdown .dropdown{
    position:static; opacity:1; visibility:visible; transform:none; padding-top:0;
  }
  .has-dropdown .dropdown-inner{
    border:none; box-shadow:none; background:none; padding:0 0 6px 14px; min-width:0;
  }
  .card-grid{ grid-template-columns:1fr; }
  .form-row{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  section{ padding:64px 0; }
  .cta-band{ padding:36px 24px; flex-direction:column; align-items:flex-start; }
  .gauge-panel{ padding:30px; }
  .form-panel{ padding:24px; }
}