/* ═══ DAN AIR TECH — modern rebuild ═══ */

:root{
  --navy-900:#04182E;
  --navy-800:#062B4E;
  --navy-700:#0A3A66;
  --blue:#00539F;
  --sky:#3EA0E8;
  --gold:#F2A71B;
  --gold-dk:#D18A16;
  --ink:#0E1726;
  --body:#4C5B6E;
  --line:#E3E9F1;
  --paper:#FFFFFF;
  --soft:#F4F7FB;
  --radius:18px;
  --max:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 18px 50px -22px rgba(4,24,46,.35);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Montserrat',system-ui,-apple-system,'Segoe UI',sans-serif;
  color:var(--body);
  background:var(--paper);
  font-size:16.5px;
  line-height:1.7;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{color:var(--ink);line-height:1.12;letter-spacing:-.02em;margin:0 0 .5em;font-weight:800}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}

.wrap{width:min(var(--max),92vw);margin-inline:auto}

.skip{position:absolute;left:-9999px;top:0;background:var(--gold);color:#04182E;padding:.8rem 1.2rem;z-index:99;font-weight:700}
.skip:focus{left:1rem;top:1rem}

:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:6px}

/* ═══ NAV ═══ */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:50;
  transition:background .35s var(--ease),box-shadow .35s var(--ease),backdrop-filter .35s;
}
.nav__inner{
  width:min(var(--max),94vw);margin-inline:auto;
  display:flex;align-items:center;gap:1.5rem;
  height:78px;transition:height .35s var(--ease);
}
.nav.is-stuck{background:rgba(4,24,46,.86);backdrop-filter:blur(14px);box-shadow:0 1px 0 rgba(255,255,255,.08),0 20px 40px -30px #000}
.nav.is-stuck .nav__inner{height:66px}

.brand{display:flex;align-items:center;gap:.65rem;flex-shrink:0}
.brand img{width:44px;height:44px;object-fit:contain}
.brand__txt{
  font-weight:600;letter-spacing:.18em;font-size:.78rem;color:#fff;
  text-transform:uppercase;line-height:1.1
}
.brand__txt strong{display:block;color:var(--gold);font-weight:800;letter-spacing:.3em}

.nav__menu{display:flex;align-items:center;gap:1.7rem;margin-left:auto;font-size:.82rem;font-weight:600}
.nav__menu a{color:rgba(255,255,255,.82);letter-spacing:.03em;position:relative;padding:.3rem 0;transition:color .25s}
.nav__menu a::after{
  content:'';position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--gold);transition:width .3s var(--ease)
}
.nav__menu a:hover{color:#fff}
.nav__menu a:hover::after{width:100%}
.nav__cta{
  background:var(--gold);color:#04182E !important;padding:.62rem 1.15rem;border-radius:999px;
  transition:transform .25s var(--ease),background .25s
}
.nav__cta::after{display:none}
.nav__cta:hover{background:#fff;transform:translateY(-2px)}

.nav__tools{display:flex;align-items:center;gap:.75rem}
.lang{display:flex;border:1px solid rgba(255,255,255,.25);border-radius:999px;overflow:hidden}
.lang button{
  background:none;border:0;color:rgba(255,255,255,.7);font:inherit;font-size:.72rem;font-weight:700;
  padding:.42rem .68rem;cursor:pointer;letter-spacing:.06em;transition:.25s
}
.lang button.is-active{background:var(--gold);color:#04182E}
.lang button:not(.is-active):hover{color:#fff}

.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:.4rem;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:#fff;transition:.3s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ═══ HERO ═══ */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  background:var(--navy-900);overflow:hidden;padding:120px 0 0
}
.hero__bg{
  position:absolute;inset:0;
  background:image-set(url('../assets/hero.jpg') 1x) center/cover no-repeat;
  background-image:url('../assets/hero.jpg');
  transform:scale(1.06);
  animation:heroZoom 18s var(--ease) forwards
}
.hero__bg::after{
  content:'';position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(4,24,46,.88) 0%,rgba(4,24,46,.55) 38%,rgba(4,24,46,.94) 100%),
    radial-gradient(80% 60% at 15% 40%,rgba(0,83,159,.5),transparent 70%)
}
@keyframes heroZoom{to{transform:scale(1)}}
.hero__grid{
  position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.13) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.13) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 50% 45%,#000,transparent 75%)
}
.hero__inner{position:relative;width:min(var(--max),92vw);margin-inline:auto;flex:1;display:flex;flex-direction:column;justify-content:center;padding-block:2rem}

.badge{
  display:inline-flex;align-items:center;gap:.6rem;align-self:flex-start;
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);backdrop-filter:blur(6px);
  color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  padding:.5rem 1rem;border-radius:999px;margin-bottom:1.6rem
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 0 rgba(242,167,27,.7);animation:pulse 2.4s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 12px rgba(242,167,27,0)}100%{box-shadow:0 0 0 0 rgba(242,167,27,0)}}

.hero h1{
  color:#fff;font-size:clamp(2.6rem,7.2vw,5.4rem);letter-spacing:-.035em;margin-bottom:1rem;max-width:16ch
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--gold),#FFD777 55%,var(--gold));
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero__lead{color:rgba(255,255,255,.8);font-size:clamp(1rem,1.6vw,1.2rem);max-width:56ch;margin-bottom:2.2rem}

.hero__actions{display:flex;flex-wrap:wrap;gap:.9rem}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:1rem 1.9rem;border-radius:999px;font-weight:700;font-size:.9rem;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;transition:transform .28s var(--ease),background .28s,color .28s,box-shadow .28s
}
.btn--gold{background:var(--gold);color:#04182E;box-shadow:0 14px 34px -14px rgba(242,167,27,.75)}
.btn--gold:hover{background:#FFBE3F;transform:translateY(-3px)}
.btn--ghost{border-color:rgba(255,255,255,.32);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--navy-900);transform:translateY(-3px)}
.btn--block{width:100%}

.hero__ports{
  position:relative;display:grid;grid-template-columns:repeat(3,1fr);
  width:min(var(--max),92vw);margin:0 auto;
  border-top:1px solid rgba(255,255,255,.14);
}
.port{padding:1.5rem 1.2rem 2.2rem;border-right:1px solid rgba(255,255,255,.1)}
.port:last-child{border-right:0}
.port strong{display:block;color:#fff;font-size:1.5rem;letter-spacing:.04em;line-height:1}
.port span{display:block;margin-top:.35rem;color:rgba(255,255,255,.6);font-size:.78rem;font-weight:600}
.port span em{display:block;font-style:normal}
.port i{display:block;font-style:normal;color:rgba(255,255,255,.38);font-size:.72rem;font-weight:500}

/* ═══ STATS ═══ */
.stats{background:var(--navy-800);color:#fff;padding:0}
.stats__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.1)}
.stat{background:var(--navy-800);padding:2.4rem 1.4rem;text-align:center}
.stat b{display:block;font-size:clamp(1.8rem,3.4vw,2.6rem);color:var(--gold);letter-spacing:-.03em;line-height:1}
.stat span{display:block;margin-top:.5rem;font-size:.78rem;font-weight:600;color:rgba(255,255,255,.62);letter-spacing:.04em}

/* ═══ SECTIONS ═══ */
.sec{padding:clamp(4.5rem,9vw,7.5rem) 0}
.sec--soft{background:var(--soft)}
.sec--dark{background:var(--navy-900);color:rgba(255,255,255,.72)}
.sec--dark h2,.sec--dark h3{color:#fff}

.kicker{
  display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase;
  color:var(--blue);margin-bottom:1rem
}
.sec--dark .kicker{color:var(--gold)}
.sec__head{max-width:62ch;margin-bottom:3.2rem}
.sec__head h2{font-size:clamp(1.9rem,4vw,2.9rem)}
.sec__note{max-width:62ch;margin-top:2.8rem;font-size:.96rem;color:var(--body)}

/* ═══ CARDS ═══ */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.2rem}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:2rem 1.7rem;position:relative;overflow:hidden;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s
}
.card::before{
  content:'';position:absolute;inset:0 0 auto 0;height:3px;
  background:linear-gradient(90deg,var(--blue),var(--sky));transform:scaleX(0);transform-origin:left;
  transition:transform .45s var(--ease)
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card:hover::before{transform:scaleX(1)}
.card__ico{
  display:grid;place-items:center;width:52px;height:52px;border-radius:14px;
  background:linear-gradient(140deg,rgba(0,83,159,.12),rgba(62,160,232,.16));color:var(--blue);margin-bottom:1.2rem
}
.card__ico svg{width:26px;height:26px;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:1.12rem;margin-bottom:.55rem}
.card p{font-size:.92rem;margin:0}

/* ═══ FLEET ═══ */
.fleet{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.4rem}
.fleet__col{
  border:1px solid rgba(255,255,255,.13);border-radius:var(--radius);padding:1.8rem;
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.01))
}
.fleet__eng{
  display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.2em;color:var(--navy-900);
  background:var(--gold);padding:.35rem .8rem;border-radius:999px;margin-bottom:1.3rem
}
.fleet__list li{
  display:flex;align-items:baseline;gap:.6rem;flex-wrap:wrap;
  padding:.85rem 0;border-bottom:1px solid rgba(255,255,255,.09);font-size:.9rem
}
.fleet__list li:last-child{border-bottom:0}
.fleet__list .ac{
  font-weight:800;color:#fff;font-size:1.05rem;letter-spacing:.02em;min-width:64px
}
.fleet__list i{font-style:normal;color:rgba(255,255,255,.45)}

/* ═══ MISSION ═══ */
.mission__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.pillars{display:grid;gap:.9rem}
.pillars li{
  background:var(--soft);border-left:3px solid var(--gold);border-radius:0 14px 14px 0;padding:1.2rem 1.4rem
}
.pillars b{display:block;color:var(--ink);font-size:1rem}
.pillars span{font-size:.88rem}

/* ═══ TIMELINE ═══ */
.timeline{position:relative;display:grid;gap:2rem;padding-left:2.2rem;margin-bottom:3.5rem}
.timeline::before{content:'';position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--blue),var(--gold))}
.timeline li{position:relative}
.timeline li::before{
  content:'';position:absolute;left:-2.2rem;top:6px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--blue)
}
.timeline li:last-child::before{border-color:var(--gold)}
.timeline b{font-size:.74rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--blue)}
.timeline h3{font-size:1.2rem;margin:.3rem 0 .4rem}
.timeline p{font-size:.94rem;margin:0;max-width:60ch}

.acmi{border-top:1px solid var(--line);padding-top:2rem}
.acmi__lbl{display:block;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--body);margin-bottom:1rem;opacity:.75}
.acmi__chips{display:flex;flex-wrap:wrap;gap:.55rem}
.acmi__chips span{
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:.45rem 1rem;
  font-size:.82rem;font-weight:600;color:var(--ink);transition:.25s var(--ease)
}
.acmi__chips span:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}

/* ═══ CERTIFICATE ═══ */
.certcard{
  display:flex;align-items:center;gap:1.3rem;flex-wrap:wrap;
  border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem 1.8rem;background:var(--soft);
  transition:.35s var(--ease)
}
.certcard:hover{border-color:var(--blue);background:#fff;box-shadow:var(--shadow);transform:translateY(-3px)}
.certcard__ico{display:grid;place-items:center;width:56px;height:56px;border-radius:14px;background:rgba(0,83,159,.1);color:var(--blue);flex-shrink:0}
.certcard__ico svg{width:28px;height:28px;stroke-linecap:round;stroke-linejoin:round}
.certcard__txt{flex:1;min-width:200px}
.certcard__txt b{display:block;color:var(--ink);font-size:1.02rem}
.certcard__txt i{font-style:normal;font-size:.84rem}
.certcard__dl{
  background:var(--blue);color:#fff;padding:.72rem 1.4rem;border-radius:999px;font-size:.84rem;font-weight:700
}

/* ═══ CONTACT ═══ */
.contact{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
.contact__list{margin-top:2rem;display:grid;gap:1rem}
.contact__list li{border-top:1px solid rgba(255,255,255,.12);padding-top:1rem}
.contact__list b{display:block;font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:.2rem}
.contact__list span{color:#fff;font-size:.94rem;font-weight:600}

.form{
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.12);
  border-radius:22px;padding:clamp(1.5rem,3vw,2.4rem);backdrop-filter:blur(8px)
}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{display:block;margin-bottom:1.15rem}
.field>span{display:block;font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.62);margin-bottom:.5rem}
.field input,.field textarea{
  width:100%;font:inherit;font-size:.94rem;color:#fff;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);border-radius:12px;
  padding:.9rem 1rem;transition:.25s var(--ease);resize:vertical
}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.3)}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--gold);background:rgba(255,255,255,.08)}
.field input:user-invalid{border-color:#E8674F}

.drop{position:relative;border:1.5px dashed rgba(255,255,255,.28);border-radius:12px;padding:1.4rem;text-align:center;transition:.25s var(--ease)}
.drop:hover,.drop.is-over{border-color:var(--gold);background:rgba(242,167,27,.06)}
.drop input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}
.drop__txt{font-size:.86rem;color:rgba(255,255,255,.55);pointer-events:none}
.drop.has-file{border-style:solid;border-color:var(--gold)}
.drop.has-file .drop__txt{color:var(--gold);font-weight:700}

.check{display:flex;align-items:flex-start;gap:.7rem;font-size:.85rem;margin-bottom:.8rem;cursor:pointer;color:rgba(255,255,255,.7)}
.check input{width:18px;height:18px;margin-top:.15rem;accent-color:var(--gold);flex-shrink:0}
.form .btn{margin-top:1rem}

/* ═══ FOOTER ═══ */
.foot{background:#02101F;color:rgba(255,255,255,.55);padding:3.5rem 0 1.5rem;font-size:.86rem}
.foot__grid{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap;padding-bottom:2.5rem;border-bottom:1px solid rgba(255,255,255,.1)}
.brand--foot img{width:40px;height:40px}
.foot__tag{margin:1rem 0 0;max-width:34ch;font-size:.84rem}
.foot__links{display:grid;grid-template-columns:repeat(2,auto);gap:.6rem 2.5rem;align-content:start}
.foot__links a{transition:color .25s}
.foot__links a:hover{color:var(--gold)}
.foot__bar{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-top:1.5rem;font-size:.78rem;opacity:.65}

/* ═══ REVEAL ═══ */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ═══ RESPONSIVE ═══ */
@media (max-width:1000px){
  .mission__grid,.contact{grid-template-columns:1fr}
  .hero__ports{grid-template-columns:repeat(2,1fr)}
  .port:nth-child(2){border-right:0}
  .port:nth-child(1),.port:nth-child(2){border-bottom:1px solid rgba(255,255,255,.1)}
  .port:nth-child(3){grid-column:1/-1;border-right:0}
  .stats__grid{grid-template-columns:repeat(2,1fr)}
  .stat:last-child{grid-column:1/-1}
}
@media (max-width:860px){
  .burger{display:flex}
  .nav{background:rgba(4,24,46,.9);backdrop-filter:blur(14px)}
  .nav__menu{
    position:fixed;inset:66px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--navy-900);padding:1rem 6vw 2rem;font-size:1rem;
    transform:translateY(-120%);transition:transform .45s var(--ease);
    box-shadow:0 30px 60px -30px #000;border-top:1px solid rgba(255,255,255,.08)
  }
  .nav__menu.is-open{transform:none}
  .nav__menu a{padding:1rem 0;border-bottom:1px solid rgba(255,255,255,.07)}
  .nav__cta{text-align:center;margin-top:1.2rem;border-bottom:0 !important;padding:.9rem 1.15rem}
}
@media (max-width:720px){
  body{font-size:16px}
  .hero__bg{background-image:url('../assets/hero-mobile.jpg')}
  .hero{min-height:88svh;padding-top:100px}
  .form__row{grid-template-columns:1fr}
  .foot__grid{flex-direction:column}
  .timeline{padding-left:1.8rem}
  .timeline li::before{left:-1.8rem;width:14px;height:14px}
}
@media (max-width:480px){
  .hero__ports{grid-template-columns:1fr}
  .port{border-right:0;border-bottom:1px solid rgba(255,255,255,.1);padding:1.1rem 0}
  .port:last-child{border-bottom:0}
  .stats__grid{grid-template-columns:1fr}
  .foot__links{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}