/* ============================
   BUILT UP SYDNEY — MASTER CSS
   ============================ */

:root {
  --dark:#020617;
  --primary:#0ea5e9;
  --accent:#22c55e;
  --light:#f8fafc;
  --gray:#94a3b8;
  --radius:16px;
  --shadow:0 12px 40px rgba(0,0,0,.12);
}

*,
*::before,
*::after{
  box-sizing:border-box;
  margin:0;
  padding:0;
}

body{
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Ubuntu,"Helvetica Neue",Arial;
  background:var(--light);
  color:#0f172a;
  line-height:1.6;
  overflow-x:hidden;
}

img{
  max-width:100%;
  display:block;
}

a{
  text-decoration:none;
  color:inherit;
}

ul{ list-style:none; }

/* ============================
   NAVBAR
   ============================ */

.nav{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:1000;
  background:rgba(2,6,23,.9);
  backdrop-filter:blur(10px);
  padding:18px 60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  box-shadow:0 8px 30px rgba(0,0,0,.25);
}

.logo{
  font-size:1.4rem;
  font-weight:800;
  letter-spacing:.6px;
  color:white;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:36px;
}

.nav-links a{
  color:white;
  font-weight:600;
  position:relative;
  padding-bottom:4px;
}

.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-6px;
  width:0%;
  height:2px;
  background:var(--primary);
  transition:.3s;
}

.nav-links a:hover::after,
.nav-links a.active::after{
  width:100%;
}

.nav-links .btn{
  background:linear-gradient(135deg,var(--primary),#38bdf8);
  padding:12px 22px;
  border-radius:999px;
  color:white;
  font-weight:700;
  box-shadow:0 6px 20px rgba(14,165,233,.4);
  transition:.3s;
}

.nav-links .btn:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 30px rgba(14,165,233,.6);
}

/* Mobile menu button */
.menu-toggle{
  display:none;
  font-size:30px;
  color:white;
  cursor:pointer;
}

/* ============================
   HERO
   ============================ */

.hero{
  min-height:100vh;
  padding-top:100px;
  display:grid;
  grid-template-columns:1fr;
  align-items:center;
  gap:60px;
  padding-left:80px;
  padding-right:80px;
  background:
    linear-gradient(120deg,rgba(2,6,23,.75),rgba(2,6,23,.35)),
    url("../images/hero.jpg") center/cover no-repeat;
  color:white;
}

.hero.small-hero{
  min-height:60vh;
}

.hero-content h1{
  font-size:3.4rem;
  font-weight:900;
  line-height:1.15;
  margin-bottom:20px;
  max-width:780px;
}

.hero-content p{
  font-size:1.15rem;
  color:#e5e7eb;
  max-width:620px;
  margin-bottom:30px;
}

.hero-buttons{
  display:flex;
  gap:20px;
  flex-wrap:wrap;
}

/* ============================
   BUTTONS
   ============================ */

.btn-primary{
  background:linear-gradient(135deg,var(--primary),#38bdf8);
  padding:14px 30px;
  border-radius:999px;
  color:white;
  font-weight:800;
  box-shadow:0 10px 30px rgba(14,165,233,.5);
  transition:.3s;
}

.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 40px rgba(14,165,233,.7);
}

.btn-outline{
  border:2px solid rgba(255,255,255,.6);
  padding:12px 28px;
  border-radius:999px;
  color:white;
  font-weight:700;
  transition:.3s;
}

.btn-outline:hover{
  background:white;
  color:#020617;
}

/* ============================
   SECTION BASE
   ============================ */

.section{
  padding:110px 80px;
}

.section.dark{
  background:#020617;
  color:white;
}

.section-title{
  text-align:center;
  margin-bottom:70px;
}

.section-title h2{
  font-size:2.8rem;
  font-weight:900;
  margin-bottom:12px;
}

.section-title p{
  font-size:1.05rem;
  color:var(--gray);
}

/* ============================
   WHY CHOOSE US
   ============================ */

.features-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:40px;
  margin-top:40px;
}

.feature-card{
  background:white;
  padding:42px 32px;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  text-align:center;
  transition:.4s;
  position:relative;
  overflow:hidden;
}

.feature-card::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,transparent,rgba(14,165,233,.12));
  opacity:0;
  transition:.4s;
}

.feature-card:hover::before{
  opacity:1;
}

.feature-card:hover{
  transform:translateY(-14px);
  box-shadow:0 22px 70px rgba(0,0,0,.2);
}

.feature-icon{
  width:72px;
  height:72px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--primary),#38bdf8);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:30px;
  color:white;
  margin:0 auto 22px;
}

.feature-card h3{
  font-size:1.25rem;
  font-weight:800;
  margin-bottom:10px;
}

.feature-card p{
  color:#475569;
  font-size:.95rem;
}

/* ============================
   SERVICES
   ============================ */

.services-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
  margin-top:40px;
}

.service-card{
  background:white;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:.4s;
}

.service-card:hover{
  transform:translateY(-12px);
  box-shadow:0 22px 70px rgba(0,0,0,.22);
}

.service-card img{
  height:230px;
  width:100%;
  object-fit:cover;
}

.service-card .content{
  padding:26px 24px;
}

.service-card h3{
  font-size:1.15rem;
  font-weight:800;
  margin-bottom:8px;
}

.service-card p{
  font-size:.92rem;
  color:#475569;
}

/* ============================
   BEFORE / AFTER
   ============================ */

.before-after-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:50px;
  margin-top:40px;
}

.before-after-card{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}

.before-after-card img{
  width:100%;
  height:440px;
  object-fit:cover;
  transition:.4s;
}

.before-after-card .after{
  position:absolute;
  inset:0;
  opacity:0;
}

.before-after-card:hover .after{
  opacity:1;
}

.before-after-label{
  position:absolute;
  bottom:16px;
  left:16px;
  background:rgba(2,6,23,.75);
  color:white;
  padding:7px 16px;
  border-radius:999px;
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.3px;
}

/* ============================
   GALLERY
   ============================ */

.gallery-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
  margin-top:40px;
}

.gallery-item{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  cursor:pointer;
}

.gallery-item img{
  height:280px;
  width:100%;
  object-fit:cover;
  transition:.5s;
}

.gallery-item:hover img{
  transform:scale(1.08);
}

.gallery-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(2,6,23,.75),transparent);
  opacity:0;
  display:flex;
  align-items:flex-end;
  padding:22px;
  transition:.4s;
}

.gallery-item:hover .gallery-overlay{
  opacity:1;
}

.gallery-overlay span{
  color:white;
  font-weight:800;
}

/* ============================
   ABOUT PAGE
   ============================ */

.about-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:60px;
  align-items:center;
}

.about-text h3{
  font-size:1.8rem;
  font-weight:900;
  margin-bottom:16px;
}

.about-text p{
  margin-bottom:18px;
  color:#475569;
  font-size:1rem;
}

.about-image img{
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}

/* ============================
   CTA SECTION
   ============================ */

.cta{
  background:
    linear-gradient(135deg,rgba(2,6,23,.88),rgba(2,6,23,.7)),
    url("../images/hero.jpg") center/cover no-repeat;
  color:white;
  text-align:center;
  padding:120px 80px;
}

.cta h2{
  font-size:2.7rem;
  font-weight:900;
  margin-bottom:16px;
}

.cta p{
  font-size:1.1rem;
  color:#e5e7eb;
  margin-bottom:30px;
}

/* ============================
   CONTACT FORM
   ============================ */

.contact-wrapper{
  max-width:1100px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:50px;
}

.contact-info{
  background:#020617;
  color:white;
  border-radius:var(--radius);
  padding:52px 42px;
  box-shadow:var(--shadow);
}

.contact-info h3{
  font-size:1.7rem;
  margin-bottom:14px;
}

.contact-info p{
  color:#cbd5f5;
  margin-bottom:30px;
  font-size:.95rem;
}

.contact-detail{
  display:flex;
  align-items:center;
  gap:14px;
  margin-bottom:18px;
  font-size:.95rem;
}

.contact-detail span{
  font-size:20px;
}

.contact-form{
  background:white;
  border-radius:var(--radius);
  padding:52px 42px;
  box-shadow:var(--shadow);
}

.contact-form h3{
  font-size:1.7rem;
  margin-bottom:22px;
}

.form-group{
  margin-bottom:18px;
}

.form-group label{
  display:block;
  font-weight:700;
  font-size:.85rem;
  margin-bottom:6px;
}

.form-group input,
.form-group textarea{
  width:100%;
  padding:14px 16px;
  border-radius:12px;
  border:1px solid #e2e8f0;
  font-size:.9rem;
  transition:.3s;
}

.form-group input:focus,
.form-group textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(14,165,233,.15);
}

.contact-form button{
  background:linear-gradient(135deg,var(--primary),#38bdf8);
  border:none;
  padding:14px 28px;
  border-radius:999px;
  color:white;
  font-weight:800;
  cursor:pointer;
  box-shadow:0 10px 30px rgba(14,165,233,.45);
  transition:.3s;
}

.contact-form button:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 40px rgba(14,165,233,.65);
}

/* ============================
   FOOTER
   ============================ */

.footer{
  background:#020617;
  color:#94a3b8;
  padding:70px 80px 40px;
}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:40px;
  margin-bottom:40px;
}

.footer h4{
  color:white;
  margin-bottom:16px;
  font-size:1.1rem;
}

.footer a{
  color:#94a3b8;
  font-size:.9rem;
  display:block;
  margin-bottom:10px;
}

.footer a:hover{
  color:white;
}

.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:20px;
  text-align:center;
  font-size:.8rem;
  color:#64748b;
}

/* ============================
   ANIMATIONS
   ============================ */

.fade-in{
  opacity:0;
  transform:translateY(40px);
  transition:opacity .8s ease, transform .8s ease;
}

.fade-in.visible{
  opacity:1;
  transform:translateY(0);
}

/* ============================
   RESPONSIVE
   ============================ */

@media(max-width:1100px){
  .hero{
    padding-left:40px;
    padding-right:40px;
  }
  .features-grid{ grid-template-columns:repeat(2,1fr); }
  .services-grid{ grid-template-columns:repeat(2,1fr); }
  .gallery-grid{ grid-template-columns:repeat(2,1fr); }
  .contact-wrapper{ grid-template-columns:1fr; }
  .about-grid{ grid-template-columns:1fr; }
}

@media(max-width:800px){
  .menu-toggle{ display:block; }

  .nav{
    padding:16px 24px;
  }

  .nav-links{
    position:absolute;
    top:72px;
    left:0;
    width:100%;
    background:#020617;
    flex-direction:column;
    align-items:center;
    gap:22px;
    padding:28px 0;
    display:none;
  }

  .nav-links.show{
    display:flex;
  }

  .hero{
    padding-top:120px;
  }

  .features-grid{ grid-template-columns:1fr; }
  .services-grid{ grid-template-columns:1fr; }
  .before-after-grid{ grid-template-columns:1fr; }
  .gallery-grid{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
}

@media(max-width:480px){
  .hero-content h1{ font-size:2.3rem; }
  .section{ padding:90px 26px; }
  .cta{ padding:90px 26px; }
  .footer{ padding:60px 26px 30px; }
}