/* =========================================================
   CDES — Modern Redesign
   Palette: deep ocean navy + bright cyan + crisp white
   ========================================================= */
:root{
  --navy-950:#06121f;
  --navy-900:#0a1c30;
  --navy-800:#0f2742;
  --navy-700:#163457;
  --ink:#0b1622;
  --slate-700:#334155;
  --slate-500:#64748b;
  --slate-300:#cbd5e1;
  --slate-100:#f1f5f9;
  --bg:#ffffff;
  --bg-alt:#f6f9fc;
  --cyan-500:#0ea5e9;
  --cyan-400:#22b8f0;
  --cyan-300:#7dd3fc;
  --accent:#0284c7;
  --border:#e4ecf3;
  --shadow-sm:0 1px 2px rgba(15,39,66,.06);
  --shadow-md:0 8px 24px -8px rgba(15,39,66,.18);
  --shadow-lg:0 30px 60px -20px rgba(6,18,31,.35);
  --radius:14px;
  --radius-lg:20px;
  --maxw:1200px;
  --font-sans:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --font-display:'Space Grotesk','Inter',sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none;transition:.2s}
a:hover{color:var(--cyan-500)}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--navy-900);line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.2rem,4.5vw,3.6rem);font-weight:700}
h2{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:700}
h3{font-size:1.25rem;font-weight:600}
p{margin:0 0 1em;color:var(--slate-700)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

.eyebrow{
  display:inline-block;font-size:.78rem;font-weight:600;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan-500);
  padding:.4em .9em;background:rgba(14,165,233,.1);border-radius:99px;margin-bottom:1rem;
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.75em 1.4em;border-radius:10px;font-weight:600;font-size:.95rem;
  cursor:pointer;border:1px solid transparent;transition:all .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn--primary{background:linear-gradient(135deg,var(--cyan-500),var(--accent));color:#fff;box-shadow:var(--shadow-md)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);color:#fff}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn--ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}
.btn--lg{padding:.95em 1.8em;font-size:1rem}
.btn--sm{padding:.55em 1em;font-size:.85rem}
.btn--block{display:flex;width:100%}

/* NAV */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(255,255,255,.72);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:.25s;
}
.nav.is-scrolled{background:rgba(255,255,255,.92);border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:2rem}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--navy-900)}
.brand__mark{
  width:42px;height:42px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--cyan-500),var(--accent));color:#fff;
  box-shadow:var(--shadow-md);
}
.brand__mark svg{width:26px;height:26px}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__text strong{font-family:var(--font-display);font-size:1.15rem;letter-spacing:.02em}
.brand__text em{font-style:normal;font-size:.72rem;color:var(--slate-500);letter-spacing:.04em}
.nav__links{display:flex;gap:2rem}
.nav__links a{color:var(--navy-800);font-weight:500;font-size:.95rem;position:relative}
.nav__links a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--cyan-500);transform:scaleX(0);transform-origin:left;transition:.25s}
.nav__links a:hover::after{transform:scaleX(1)}
.nav__cta{align-self:center}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{width:24px;height:2px;background:var(--navy-900);transition:.2s}

/* HERO */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero__slides{position:absolute;inset:0}
.hero__slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.2s ease;transform:scale(1.05)}
.hero__slide.is-active{opacity:1;animation:kenburns 8s ease-out forwards}
@keyframes kenburns{from{transform:scale(1.05)}to{transform:scale(1.15)}}
.hero__overlay{position:absolute;inset:0;background:
  linear-gradient(135deg,rgba(6,18,31,.85) 0%,rgba(10,28,48,.7) 50%,rgba(14,165,233,.35) 100%);
}
.hero__content{position:relative;z-index:2;padding:140px 24px 100px;max-width:880px}
.hero .eyebrow{background:rgba(255,255,255,.12);color:var(--cyan-300)}
.hero h1{color:#fff}
.hero p{color:rgba(255,255,255,.85);font-size:1.15rem;max-width:640px;margin-bottom:2rem}
.hero__cta{display:flex;flex-wrap:wrap;gap:1rem;margin-bottom:3.5rem}
.hero__stats{display:flex;gap:2.5rem;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.15);padding-top:1.8rem}
.hero__stats > div{display:flex;flex-direction:column}
.hero__stats strong{font-family:var(--font-display);font-size:2rem;color:var(--cyan-300)}
.hero__stats span{font-size:.85rem;color:rgba(255,255,255,.7)}
.hero__dots{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero__dots button{
  width:30px;height:4px;border-radius:99px;border:0;background:rgba(255,255,255,.35);cursor:pointer;transition:.25s;
}
.hero__dots button.is-active{background:var(--cyan-400);width:46px}

/* SECTIONS */
.section{padding:100px 0}
.section--alt{background:var(--bg-alt)}
.section__head{text-align:center;max-width:720px;margin:0 auto 4rem}
.section__head p{font-size:1.08rem;color:var(--slate-500)}

/* SERVICES */
.services{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.service-card{
  background:#fff;padding:2.2rem 1.8rem;border-radius:var(--radius-lg);
  border:1px solid var(--border);transition:.3s;position:relative;overflow:hidden;
}
.service-card::before{
  content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--cyan-500),var(--accent));
  opacity:0;transition:.3s;z-index:0;
}
.service-card > *{position:relative;z-index:1}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.service-card:hover::before{opacity:1}
.service-card:hover h3,.service-card:hover p{color:#fff}
.service-card:hover .service-card__icon{background:rgba(255,255,255,.18)}
.service-card__icon{
  width:56px;height:56px;border-radius:14px;display:grid;place-items:center;
  background:rgba(14,165,233,.12);color:var(--cyan-500);margin-bottom:1.2rem;transition:.3s;
}
.service-card__icon svg{width:28px;height:28px}
.service-card:hover .service-card__icon{background:rgba(255,255,255,.2);color:#fff}

/* TABS */
.tabs{display:grid;grid-template-columns:340px 1fr;gap:2rem;align-items:start}
.tabs__nav{display:flex;flex-direction:column;gap:.6rem}
.tab{
  display:flex;align-items:center;gap:1rem;padding:.8rem;
  background:#fff;border:1px solid var(--border);border-radius:14px;cursor:pointer;
  text-align:left;font:inherit;color:var(--navy-900);transition:.2s;width:100%;
}
.tab img{width:54px;height:54px;object-fit:cover;border-radius:10px;flex-shrink:0}
.tab span{font-weight:500;font-size:.95rem}
.tab:hover{border-color:var(--cyan-400);transform:translateX(4px)}
.tab.is-active{background:linear-gradient(135deg,var(--cyan-500),var(--accent));color:#fff;border-color:transparent;box-shadow:var(--shadow-md)}
.tab.is-active span{color:#fff}

.tabs__panels{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:3rem;min-height:420px;position:sticky;box-shadow:var(--shadow-sm)}
.tab-panel{display:none;animation:fade .35s ease}
.tab-panel.is-active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.features{list-style:none;padding:0;margin:1.5rem 0 2rem;display:grid;gap:.7rem}
.features li{padding-left:1.8rem;position:relative;color:var(--slate-700)}
.features li::before{content:"";position:absolute;left:0;top:.6em;width:10px;height:10px;border-radius:50%;background:var(--cyan-500)}
.features strong{color:var(--navy-900)}

/* GALLERY */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.gallery figure{margin:0;position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:4/3;background:var(--navy-900)}
.gallery img{width:100%;height:100%;object-fit:cover;transition:.5s}
.gallery figure:hover img{transform:scale(1.08)}
.gallery figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:1.2rem 1.4rem;color:#fff;font-weight:600;
  background:linear-gradient(to top,rgba(6,18,31,.85),transparent);
}

/* ABOUT */
.about{display:grid;grid-template-columns:1.4fr 1fr;gap:3rem;align-items:start}
.checks{list-style:none;padding:0;margin:1.5rem 0 0;display:grid;gap:.8rem}
.checks li{padding-left:2rem;position:relative;color:var(--navy-800);font-weight:500}
.checks li::before{
  content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;
  background:var(--cyan-500);color:#fff;display:grid;place-items:center;font-size:.8rem;font-weight:700;
}
.about__card{
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));color:#fff;
  padding:2.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);position:sticky;top:100px;
}
.about__card h3{color:#fff}
.about__card p{color:rgba(255,255,255,.8)}

/* CONTACT */
.contact{display:grid;grid-template-columns:1fr 1.3fr;gap:3.5rem;align-items:start}
.contact__meta{list-style:none;padding:0;margin:1.5rem 0 0;display:grid;gap:1rem}
.contact__meta li{display:flex;flex-direction:column;padding:1rem 1.2rem;background:var(--bg-alt);border-radius:12px;border:1px solid var(--border)}
.contact__meta span{font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;color:var(--slate-500);margin-bottom:.2em}
.contact__meta a{color:var(--navy-900);font-weight:600}

.form{background:#fff;padding:2.5rem;border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-md);display:grid;gap:1.2rem}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.field{display:flex;flex-direction:column;gap:.4em}
.field > span{font-size:.85rem;font-weight:600;color:var(--navy-900)}
.field input,.field select,.field textarea{
  font:inherit;padding:.85em 1em;border:1.5px solid var(--border);border-radius:10px;
  background:#fff;color:var(--ink);transition:.2s;width:100%;
}
.field textarea{resize:vertical;font-family:inherit}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan-500);box-shadow:0 0 0 4px rgba(14,165,233,.12);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#ef4444;background:#fef2f2}
.field__error{font-style:normal;font-size:.8rem;color:#ef4444;min-height:1em}
.form__success{
  display:none;padding:1em 1.2em;background:#ecfdf5;color:#047857;border-radius:10px;
  border:1px solid #a7f3d0;font-weight:500;
}
.form__success.is-visible{display:block;animation:fade .3s ease}

/* FOOTER */
.footer{background:var(--navy-950);color:rgba(255,255,255,.7);padding:80px 0 0}
.footer__inner{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:3rem;padding-bottom:60px}
.footer h4{color:#fff;font-size:.85rem;text-transform:uppercase;letter-spacing:.14em;margin-bottom:1.2rem}
.footer a,.footer span{color:rgba(255,255,255,.65);display:block;margin-bottom:.6rem;font-size:.92rem}
.footer a:hover{color:var(--cyan-300)}
.brand--footer{color:#fff;margin-bottom:1.2rem}
.brand--footer .brand__text em{color:rgba(255,255,255,.5)}
.footer__tag{color:rgba(255,255,255,.6);max-width:380px;margin:0}
.footer__base{border-top:1px solid rgba(255,255,255,.08);padding:1.5rem 0;font-size:.85rem;color:rgba(255,255,255,.5)}

/* TO TOP */
.to-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:linear-gradient(135deg,var(--cyan-500),var(--accent));color:#fff;
  display:grid;place-items:center;font-size:1.3rem;font-weight:700;
  box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transform:translateY(20px);transition:.3s;z-index:40;
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{transform:translateY(-4px);color:#fff}

/* REVEAL */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-visible{opacity:1;transform:none}

/* RESPONSIVE */
@media (max-width:980px){
  .services{grid-template-columns:repeat(2,1fr)}
  .tabs{grid-template-columns:1fr}
  .tabs__nav{flex-direction:column;overflow-x:none;padding-bottom:.5rem;scrollbar-width:thin}
  .tab{min-width:240px;flex-shrink:0}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .about,.contact{grid-template-columns:1fr}
  .about__card{position:static}
  .footer__inner{grid-template-columns:1fr;gap:2rem}
  .category__back{display:block;}
}
@media (max-width:720px){
  .nav__links,.nav__cta{display:none}
  .nav__toggle{display:flex}
  .nav.is-open .nav__links{
    display:flex;flex-direction:column;position:absolute;top:74px;left:0;right:0;
    background:#fff;padding:1.5rem 24px;border-bottom:1px solid var(--border);gap:1.2rem;box-shadow:var(--shadow-md);
  }
  .hero__content{padding-top:120px}
  .hero__stats{gap:1.5rem}
  .hero__stats strong{font-size:1.6rem}
  .section{padding:70px 0}
  .services{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .form,.tabs__panels{padding:1.7rem}
  .form__row{grid-template-columns:1fr}
}