/* ========================================
   RT Creative Engineers - Premium White Theme
   Design System & Complete Styles
   ======================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

/* --- CSS Variables --- */
:root {
  --bg: #FFFFFF;
  --primary: #0A2540;
  --secondary: #6B7280;
  --accent: #007BFF;
  --accent-hover: #0056b3;
  --border: #E5E7EB;
  --light-bg: #F9FAFB;
  --card-shadow: 0 2px 16px rgba(10,37,64,0.06);
  --card-shadow-hover: 0 8px 32px rgba(10,37,64,0.12);
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.35s cubic-bezier(.4,0,.2,1);
  --max-width: 1200px;
  --header-h: 72px;
}

/* --- Reset --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Inter',sans-serif;color:var(--primary);background:var(--bg);line-height:1.7;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;border:none;outline:none}

/* --- Utility --- */
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section--alt{background:var(--light-bg)}
.section__label{display:inline-block;font-size:13px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.section__title{font-family:'Poppins',sans-serif;font-size:clamp(28px,4vw,42px);font-weight:700;line-height:1.25;margin-bottom:16px;color:var(--primary)}
.section__sub{font-size:17px;color:var(--secondary);max-width:600px;line-height:1.8}
.section__header{text-align:center;margin-bottom:60px}
.section__header .section__sub{margin:0 auto}

/* --- Reveal Animation --- */
.reveal{opacity:0;transform:translateY(32px);transition:opacity .7s var(--transition),transform .7s var(--transition)}
.reveal.active{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}
.reveal-delay-4{transition-delay:.4s}

/* --- Buttons --- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:var(--radius);font-weight:600;font-size:15px;cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 4px 16px rgba(0,123,255,.25)}
.btn--primary:hover{background:var(--accent-hover);box-shadow:0 6px 24px rgba(0,123,255,.35);transform:translateY(-2px)}
.btn--outline{background:transparent;color:var(--primary);border:2px solid var(--border)}
.btn--outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn--white{background:#fff;color:var(--primary);box-shadow:var(--card-shadow)}
.btn--white:hover{box-shadow:var(--card-shadow-hover);transform:translateY(-2px)}
.btn .ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.35);transform:scale(0);animation:ripple-anim .6s linear}
@keyframes ripple-anim{to{transform:scale(4);opacity:0}}

/* ========================
   HEADER
   ======================== */
.header{position:fixed;top:0;left:0;width:100%;height:var(--header-h);z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 1px 12px rgba(10,37,64,.07)}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
.header__logo{display:flex;align-items:center}
.header__logo img{height:48px;width:auto;display:block}
.header__nav{display:flex;align-items:center;gap:36px}
.header__nav a{font-size:14px;font-weight:500;color:var(--secondary);transition:color .3s;position:relative}
.header__nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--accent);transition:width .3s}
.header__nav a:hover,
.header__nav a.active{color:var(--primary)}
.header__nav .dropdown{position:relative;display:flex;align-items:center;height:100%}
.header__nav .dropdown-menu{position:absolute;top:100%;left:0;background:#fff;box-shadow:var(--card-shadow-hover);border-radius:var(--radius);padding:12px 0;min-width:260px;opacity:0;visibility:hidden;transition:var(--transition);transform:translateY(10px);display:flex;flex-direction:column;gap:4px}
.header__nav .dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.header__nav .dropdown-menu a{padding:10px 24px;font-size:14px;color:var(--secondary);font-weight:500;transition:var(--transition)}
.header__nav .dropdown-menu a::after{display:none}
.header__nav .dropdown-menu a:hover{background:var(--light-bg);color:var(--accent)}
/* Dropdown chevron removed as per request */
@media(max-width:900px){
  .header__nav .dropdown-menu{position:static;box-shadow:none;opacity:1;visibility:visible;transform:none;min-width:100%;padding:0;display:none;background:transparent;border-radius:0}
  .header__nav .dropdown.open .dropdown-menu{display:flex}
}
.header__nav a:not(.dropdown > a):hover::after,
.header__nav a:not(.dropdown > a).active::after{width:100%}
.header__cta{margin-left:12px}
.header__nav-cta{display:none}

/* Hamburger Button */
.header__hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;z-index:1102;position:relative;width:40px;height:40px;align-items:center;justify-content:center;border-radius:10px;transition:all .3s;background:transparent}
.header__hamburger:hover{background:rgba(0,123,255,.06)}
.header__hamburger span{width:20px;height:2px;background:var(--primary);transition:all .4s cubic-bezier(.77,0,.18,1);display:block;border-radius:3px;transform-origin:center center}
.header__hamburger.active span{background:#fff}
.header__hamburger.active span:nth-child(1){transform:rotate(45deg) translate(3.5px, 3.5px)}
.header__hamburger.active span:nth-child(2){opacity:0;transform:scaleX(0)}
.header__hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(3.5px, -3.5px)}

/* =============================================
   FULL-SCREEN MOBILE MENU OVERLAY
   ============================================= */
.mobile-overlay{
  position:fixed;inset:0;z-index:1099;
  opacity:0;visibility:hidden;
  transition:opacity .5s ease,visibility .5s ease;
}
.mobile-overlay.active{opacity:1;visibility:visible}

@media(max-width:900px){
  .header__nav{
    position:fixed;
    inset:0;
    width:100%;
    height:100vh;
    height:100dvh;
    background:linear-gradient(160deg, #06152b 0%, #0a2540 40%, #0d3158 100%);
    flex-direction:column;
    align-items:center;
    justify-content:flex-start;
    padding:120px 32px 60px;
    gap:8px;
    z-index:1100;
    overflow-y:auto;
    overflow-x:hidden;
    overscroll-behavior:contain;
    opacity:0;
    visibility:hidden;
    transition:opacity .4s cubic-bezier(.4,0,.2,1), visibility .4s cubic-bezier(.4,0,.2,1);
  }
  .header__nav.open{
    opacity:1;
    visibility:visible;
  }
  .header__hamburger{display:flex}
  .header__cta{display:none}

  /* Header becomes transparent when menu is open */
  body.menu-open .header{
    background:transparent;
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
    box-shadow:none;
    z-index:1101;
  }

  /* Decorative shapes in mobile menu */
  .header__nav::before{
    content:'';
    position:fixed;
    top:-80px;right:-60px;
    width:250px;height:250px;
    background:radial-gradient(circle, rgba(0,123,255,.15) 0%, transparent 70%);
    border-radius:50%;
    pointer-events:none;
    z-index:0;
    animation:menuFloat 6s ease-in-out infinite;
  }
  .header__nav::after{
    content:'';
    position:fixed;
    bottom:-40px;left:-40px;
    width:200px;height:200px;
    background:radial-gradient(circle, rgba(52,211,153,.1) 0%, transparent 70%);
    border-radius:50%;
    pointer-events:none;
    z-index:0;
    animation:menuFloat 6s ease-in-out infinite reverse;
  }
  @keyframes menuFloat{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(15px,-20px) scale(1.1)}}

  /* Close button (styled by hamburger.active) sits above overlay via z-index */

  /* ---- Mobile Nav Links ---- */
  .header__nav > a,
  .header__nav > .dropdown > a{
    font-family:'Poppins',sans-serif;
    font-size:20px;
    font-weight:600;
    color:rgba(255,255,255,.9);
    padding:12px 8px;
    width:100%;
    border-bottom:none;
    text-align:center;
    position:relative;
    z-index:1;
    letter-spacing:.3px;
    /* stagger animation */
    opacity:0;
    transform:translateY(20px);
    transition:opacity .4s ease, transform .4s ease, color .3s;
  }
  .header__nav > a::after,
  .header__nav > .dropdown > a::after{
    display:none !important;
  }
  .header__nav > a:hover,
  .header__nav > .dropdown > a:hover{
    color:#fff;
  }
  .header__nav > a.active{
    color:var(--accent);
  }
  .header__nav > a.active::before{
    content:'';
    position:absolute;
    bottom:2px;
    left:50%;
    transform:translateX(-50%);
    width:16px;
    height:2px;
    background:var(--accent);
    border-radius:2px;
  }

  /* Staggered entrance */
  .header__nav.open > *:nth-child(1){transition-delay:.05s}
  .header__nav.open > *:nth-child(2){transition-delay:.1s}
  .header__nav.open > *:nth-child(3){transition-delay:.15s}
  .header__nav.open > *:nth-child(4){transition-delay:.2s}
  .header__nav.open > *:nth-child(5){transition-delay:.25s}
  .header__nav.open > *:nth-child(6){transition-delay:.3s}
  .header__nav.open > *:nth-child(7){transition-delay:.35s}

  .header__nav.open > a,
  .header__nav.open > .dropdown,
  .header__nav.open > .dropdown > a{
    opacity:1;
    transform:translateY(0);
  }
  /* The dropdown container itself needs to animate */
  .header__nav > .dropdown{
    opacity:0;
    transform:translateY(20px);
    transition:opacity .4s ease, transform .4s ease;
  }

  /* ---- Services Dropdown ---- */
  .header__nav .dropdown{
    position:relative;
    display:flex;
    flex-direction:column;
    align-items:center;
    width:100%;
    z-index:1;
  }
  .header__nav .dropdown > a{
    justify-content:center;
    gap:10px;
    border-bottom:none;
    display:inline-flex;
    width:auto;
  }
  /* Chevron arrow removed as per request */
  .header__nav .dropdown-menu{
    padding:0;
    background:rgba(255,255,255,.05);
    border-radius:12px;
    max-height:0;
    overflow:hidden;
    transition:max-height .4s cubic-bezier(.4,0,.2,1), margin .3s ease, padding .3s ease;
    width:100%;
    max-width:320px;
    margin:0;
    border:1px solid rgba(255,255,255,0);
  }
  .header__nav .dropdown.open .dropdown-menu{
    display:flex;
    flex-direction:column;
    max-height:800px;
    padding:8px 0;
    margin:12px 0;
    border-color:rgba(255,255,255,.08);
  }
  .header__nav .dropdown-menu a{
    padding:12px 20px;
    font-size:13px;
    font-weight:500;
    color:rgba(255,255,255,.7);
    text-align:center;
    transition:all .25s ease;
    border-radius:8px;
  }
  .header__nav .dropdown-menu a:hover{
    color:#fff;
    background:rgba(255,255,255,.08);
  }  .header__nav .dropdown-menu a::before{
    content:'';
    position:absolute;
    left:0;top:0;bottom:0;
    width:2px;
    background:var(--accent);
    opacity:0;
    transition:opacity .25s;
  }
  .header__nav .dropdown-menu a:hover::before{
    opacity:1;
  }

  /* ---- Mobile CTA Button ---- */
  .header__nav .btn{
    width:auto;
    min-width:200px;
    justify-content:center;
    margin-top:28px;
    padding:15px 36px;
    border-radius:50px;
    font-size:15px;
    font-weight:700;
    background:linear-gradient(135deg, #007BFF 0%, #0056b3 100%);
    color:#fff;
    box-shadow:0 8px 32px rgba(0,123,255,.3);
    z-index:1;
    /* stagger animation */
    opacity:0;
    transform:translateY(16px) scale(.95);
    transition:opacity .4s ease .45s, transform .4s ease .45s, box-shadow .3s;
  }
  .header__nav.open .btn{
    opacity:1;
    transform:translateY(0) scale(1);
  }
  .header__nav .btn:hover{
    box-shadow:0 12px 40px rgba(0,123,255,.45);
    transform:translateY(-2px) scale(1.02);
  }
  .header__nav-cta{display:inline-flex !important}

  /* Footer info inside mobile nav */
  .mobile-nav-footer{
    margin-top:auto;
    padding:24px 32px;
    text-align:center;
    z-index:1;
    opacity:0;
    transform:translateY(12px);
    transition:opacity .4s ease .5s, transform .4s ease .5s;
  }
  .header__nav.open .mobile-nav-footer{
    opacity:1;
    transform:translateY(0);
  }
  .mobile-nav-footer p{
    color:rgba(255,255,255,.3);
    font-size:12px;
    letter-spacing:1px;
    text-transform:uppercase;
    font-weight:500;
  }

  /* Body scroll lock */
  body.menu-open{
    overflow:hidden;
  }
}

/* ========================
   HERO
   ======================== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:var(--header-h);overflow:hidden;background:#fff}
.hero__shapes{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero__shape{position:absolute;border-radius:50%;filter:blur(80px);opacity:.12;animation:float 8s ease-in-out infinite}
.hero__shape--1{width:500px;height:500px;background:var(--accent);top:-10%;right:-5%;animation-delay:0s}
.hero__shape--2{width:350px;height:350px;background:#a78bfa;bottom:5%;left:-5%;animation-delay:2s}
.hero__shape--3{width:250px;height:250px;background:#34d399;bottom:30%;right:20%;animation-delay:4s}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(20px,-30px)}}
.hero__inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero__content{max-width:560px}
.hero__label{font-size:13px;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--accent);margin-bottom:20px}
.hero__title{font-family:'Poppins',sans-serif;font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1.15;margin-bottom:20px;color:var(--primary)}
.hero__title span{color:var(--accent)}
.hero__sub{font-size:18px;color:var(--secondary);margin-bottom:12px;line-height:1.8}
.hero__tagline{font-size:14px;font-weight:600;letter-spacing:4px;text-transform:uppercase;color:var(--secondary);margin-bottom:32px}
.hero__buttons{display:flex;gap:16px;flex-wrap:wrap}
.hero__image{position:relative}
.hero__img-placeholder{width:100%;aspect-ratio:4/3;background:linear-gradient(135deg,var(--light-bg) 0%,#e8edf2 100%);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--secondary);border:1px solid var(--border);overflow:hidden}
.hero__img-placeholder img{width:100%;height:100%;object-fit:cover}

/* Hero Slider */
.hero-slider{position:relative;width:100%;aspect-ratio:4/3;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--card-shadow)}
.hero-slider__slides{position:relative;width:100%;height:100%}
.hero-slider__slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;transition:opacity 0.6s ease-in-out;z-index:1}
.hero-slider__slide.active{opacity:1;z-index:2}
.hero-slider__slide img{width:100%;height:100%;object-fit:cover}
.hero-slider__caption{position:absolute;bottom:0;left:0;width:100%;background:linear-gradient(to top, rgba(10,37,64,0.85) 0%, transparent 100%);color:#fff;padding:60px 20px 24px;font-family:'Poppins',sans-serif;font-weight:600;font-size:18px;text-align:center;z-index:2;opacity:0;transition:opacity 0.6s ease-in-out;text-shadow:0 2px 4px rgba(0,0,0,0.5);letter-spacing:1px}
.hero-slider__slide.active .hero-slider__caption{opacity:1}
.hero-slider__btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,0.8);color:var(--primary);width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:3;transition:var(--transition);font-size:18px;border:1px solid var(--border)}
.hero-slider__btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.hero-slider__btn--prev{left:16px}
.hero-slider__btn--next{right:16px}
.hero-slider__dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3}
.hero-slider__dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,0.5);cursor:pointer;transition:var(--transition);border:1px solid rgba(0,0,0,0.1)}
.hero-slider__dot.active{background:var(--accent);border-color:var(--accent);transform:scale(1.2)}

@media(max-width:900px){
  .hero__inner{grid-template-columns:1fr;text-align:center}
  .hero__content{max-width:100%}
  .hero__buttons{justify-content:center}
  .hero__image{order:-1;width:100%;max-width:400px;margin:0 auto}
}

/* ========================
   HIGHLIGHTS / SERVICE PREVIEW
   ======================== */
.highlights__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.highlight-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:var(--transition);cursor:default}
.highlight-card:hover{transform:translateY(-6px);box-shadow:var(--card-shadow-hover);border-color:var(--accent)}
.highlight-card__icon{width:56px;height:56px;margin:0 auto 20px;border-radius:12px;background:rgba(0,123,255,.08);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--accent);transition:var(--transition)}
.highlight-card:hover .highlight-card__icon{background:var(--accent);color:#fff}
.highlight-card__title{font-family:'Poppins',sans-serif;font-weight:600;font-size:16px;margin-bottom:8px}
.highlight-card__text{font-size:14px;color:var(--secondary);line-height:1.7}

/* ========================
   WHY CHOOSE US
   ======================== */
.why__inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.why__points{display:flex;flex-direction:column;gap:24px;margin-top:24px}
.why__point{display:flex;gap:16px;align-items:flex-start}
.why__point-icon{flex-shrink:0;width:44px;height:44px;border-radius:10px;background:rgba(0,123,255,.08);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:18px}
.why__point-title{font-family:'Poppins',sans-serif;font-weight:600;font-size:15px;margin-bottom:4px}
.why__point-text{font-size:14px;color:var(--secondary);line-height:1.7}
.why__image .hero__img-placeholder{aspect-ratio:1/1}
@media(max-width:900px){.why__inner{grid-template-columns:1fr}}

/* ========================
   STATS
   ======================== */
.stats{background:var(--primary);padding:80px 0;position:relative;overflow:hidden}
.stats::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h60v60H0z' fill='none' stroke='rgba(255,255,255,0.04)' stroke-width='1'/%3E%3C/svg%3E");pointer-events:none}
.stats__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;text-align:center;position:relative;z-index:1}
.stat__number{font-family:'Poppins',sans-serif;font-size:clamp(36px,5vw,52px);font-weight:800;color:#fff;line-height:1}
.stat__number span{color:var(--accent)}
.stat__label{font-size:15px;color:rgba(255,255,255,.6);margin-top:8px;font-weight:500}

/* ========================
   ABOUT
   ======================== */
.about__grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:40px}
.about__card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px;transition:var(--transition)}
.about__card:hover{box-shadow:var(--card-shadow-hover);transform:translateY(-4px)}
.about__card-title{font-family:'Poppins',sans-serif;font-weight:700;font-size:20px;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.about__card-title .icon{color:var(--accent)}
.about__card-text{font-size:15px;color:var(--secondary);line-height:1.8}
.about__desc{font-size:17px;color:var(--secondary);line-height:1.9;max-width:800px;margin:0 auto 40px;text-align:center}
@media(max-width:768px){.about__grid{grid-template-columns:1fr}}

/* ========================
   SERVICES
   ======================== */
.services__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:28px}
.service-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px 28px;transition:var(--transition);position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:0;background:var(--accent);transition:height .4s}
.service-card:hover::before{height:100%}
.service-card:hover{box-shadow:var(--card-shadow-hover);transform:translateY(-4px)}
.service-card__icon{width:52px;height:52px;border-radius:12px;background:rgba(0,123,255,.08);display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--accent);margin-bottom:20px;transition:var(--transition)}
.service-card:hover .service-card__icon{background:var(--accent);color:#fff}
.service-card__title{font-family:'Poppins',sans-serif;font-weight:600;font-size:18px;margin-bottom:10px}
.service-card__text{font-size:14px;color:var(--secondary);line-height:1.8}

/* ========================
   PROJECTS
   ======================== */
.projects__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:28px}
.project-card{position:relative;border-radius:var(--radius);overflow:hidden;cursor:pointer;aspect-ratio:4/3;background:var(--light-bg);border:1px solid var(--border)}
.project-card__img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.project-card__img-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--secondary);background:linear-gradient(135deg,#f0f4f8,#e2e8f0)}
.project-card__overlay{position:absolute;inset:0;background:rgba(0,123,255,.85);display:flex;flex-direction:column;align-items:center;justify-content:center;opacity:0;transition:opacity .4s}
.project-card:hover .project-card__overlay{opacity:1}
.project-card:hover .project-card__img{transform:scale(1.08)}
.project-card__overlay-title{color:#fff;font-family:'Poppins',sans-serif;font-weight:600;font-size:18px;margin-bottom:8px}
.project-card__overlay-btn{color:#fff;font-size:14px;font-weight:500;border:1px solid rgba(255,255,255,.5);padding:8px 20px;border-radius:var(--radius);transition:var(--transition)}
.project-card__overlay-btn:hover{background:#fff;color:var(--accent)}

/* ========================
   LIGHTBOX
   ======================== */
.lightbox{position:fixed;inset:0;z-index:10000;background:rgba(10,15,30,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .4s ease,visibility .4s ease}
.lightbox.active{opacity:1;visibility:visible}
.lightbox__content{position:relative;max-width:85vw;max-height:85vh;display:flex;flex-direction:column;align-items:center;transform:scale(.9) translateY(20px);transition:transform .4s cubic-bezier(.2,.8,.3,1)}
.lightbox.active .lightbox__content{transform:scale(1) translateY(0)}
.lightbox__img{max-width:100%;max-height:75vh;border-radius:16px;box-shadow:0 25px 80px rgba(0,0,0,.5);object-fit:contain}
.lightbox__title{color:#fff;font-family:'Poppins',sans-serif;font-size:20px;font-weight:600;margin-top:20px;text-align:center;letter-spacing:.3px}
.lightbox__close{position:absolute;top:-50px;right:-10px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s}
.lightbox__close:hover{background:rgba(255,255,255,.25);transform:rotate(90deg)}
.lightbox__nav{position:absolute;top:50%;transform:translateY(-50%);width:50px;height:50px;border-radius:50%;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s}
.lightbox__nav:hover{background:rgba(255,255,255,.25)}
.lightbox__nav--prev{left:-70px}
.lightbox__nav--next{right:-70px}
.lightbox__counter{color:rgba(255,255,255,.5);font-size:13px;margin-top:8px;font-weight:500}
@media(max-width:768px){
  .lightbox__nav--prev{left:10px}
  .lightbox__nav--next{right:10px}
  .lightbox__close{top:-45px;right:0}
  .lightbox__content{max-width:95vw}
}

/* ========================
   CLIENTS
   ======================== */
.clients__strip{display:flex;flex-wrap:wrap;justify-content:center;gap:40px;align-items:center}
.client-logo{width:120px;height:60px;display:flex;align-items:center;justify-content:center;filter:grayscale(1) opacity(.5);transition:var(--transition);font-size:13px;color:var(--secondary);font-weight:600;border:1px solid var(--border);border-radius:8px;padding:8px 16px}
.client-logo:hover{filter:grayscale(0) opacity(1);border-color:var(--accent)}

/* ========================
   CAREERS
   ======================== */
.careers__inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.careers__form{display:flex;flex-direction:column;gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:13px;font-weight:600;color:var(--primary)}
.form-input{padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;transition:border-color .3s;background:#fff}
.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,123,255,.1)}
.form-input--file{padding:12px;cursor:pointer}
textarea.form-input{resize:vertical;min-height:100px}
@media(max-width:900px){.careers__inner{grid-template-columns:1fr}}

/* ========================
   CONTACT
   ======================== */
.contact__inner{display:grid;grid-template-columns:1fr 1fr;gap:60px}
.contact__form{display:flex;flex-direction:column;gap:16px}
.contact__info{display:flex;flex-direction:column;gap:24px}
.contact__info-item{display:flex;gap:14px;align-items:flex-start}
.contact__info-icon{flex-shrink:0;width:44px;height:44px;border-radius:10px;background:rgba(0,123,255,.08);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:18px}
.contact__info-title{font-weight:600;font-size:14px;margin-bottom:2px}
.contact__info-text{font-size:14px;color:var(--secondary)}
.contact__map{width:100%;height:250px;border-radius:var(--radius);background:var(--light-bg);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--secondary);font-size:14px;margin-top:20px;overflow:hidden}
@media(max-width:900px){.contact__inner{grid-template-columns:1fr}}

/* ========================
   FOOTER
   ======================== */
.footer{background:var(--primary);color:rgba(255,255,255,.7);padding:60px 0 30px}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer__brand{margin-bottom:12px;display:inline-block}
.footer__brand img{height:48px;width:auto;display:block}
.footer__desc{font-size:14px;line-height:1.8;max-width:300px}
.footer__title{font-family:'Poppins',sans-serif;font-weight:600;font-size:15px;color:#fff;margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__links a{font-size:14px;transition:color .3s}
.footer__links a:hover{color:var(--accent)}
.footer__bar{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:13px}
@media(max-width:768px){.footer__grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:480px){.footer__grid{grid-template-columns:1fr}}

/* ========================

/* ========================
   ENGINEERING GRID BG
   ======================== */
.grid-bg{background-image:url("data:image/svg+xml,%3Csvg width='40' height='40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h40v40H0z' fill='none' stroke='%23E5E7EB' stroke-width='.5'/%3E%3C/svg%3E");background-size:40px 40px}

/* ========================
   SCROLLBAR
   ======================== */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:var(--light-bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--secondary)}

/* ========================
   SUBPAGE HEADER
   ======================== */
.page-header{padding:180px 0 80px;background:linear-gradient(135deg,var(--light-bg),#e8edf2);text-align:center;position:relative;overflow:hidden}
.page-header__title{font-family:'Poppins',sans-serif;font-size:clamp(36px,5vw,52px);font-weight:800;color:var(--primary);margin-bottom:16px;position:relative;z-index:1}
.page-header__sub{font-size:18px;color:var(--secondary);max-width:700px;margin:0 auto;position:relative;z-index:1}
.page-header__content{max-width:800px;margin:0 auto;text-align:center}

/* ========================
   TIMELINE
   ======================== */
.timeline{position:relative;max-width:800px;margin:60px auto 0;padding-left:40px}
.timeline::before{content:'';position:absolute;top:0;left:15px;width:2px;height:100%;background:var(--border)}
.timeline-item{position:relative;margin-bottom:40px}
.timeline-item:last-child{margin-bottom:0}
.timeline-item::before{content:'';position:absolute;left:-40px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--accent);border:4px solid #fff;box-shadow:0 0 0 2px var(--accent)}
.timeline-title{font-family:'Poppins',sans-serif;font-weight:700;font-size:18px;color:var(--primary);margin-bottom:8px}
.timeline-text{font-size:15px;color:var(--secondary);line-height:1.7}

/* ========================
   ACCORDION (FAQ)
   ======================== */
.faq-grid{max-width:800px;margin:40px auto 0;display:flex;flex-direction:column;gap:16px}
.accordion-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}
.accordion-header{width:100%;text-align:left;padding:20px 24px;font-family:'Poppins',sans-serif;font-weight:600;font-size:16px;color:var(--primary);background:transparent;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:var(--transition)}
.accordion-header:hover{background:var(--light-bg)}
.accordion-header::after{content:'+';font-size:24px;font-weight:400;color:var(--accent);transition:transform 0.3s}
.accordion-item.active .accordion-header::after{transform:rotate(45deg)}
.accordion-item.active{border-color:var(--accent);box-shadow:var(--card-shadow)}
.accordion-content{max-height:0;overflow:hidden;transition:max-height 0.4s ease-out;background:#fff}
.accordion-inner{padding:0 24px 24px;font-size:15px;color:var(--secondary);line-height:1.7}