:root{
  --accent:#ff7f00;
  --dark: #0f1720;
  --muted:#6b7280;
  --card-bg:#ffffff;
  --btn-bg:#ffffff;
  --btn-text:#0b1220;
}

/* Base */
*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: 'Poppins', system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color:#111827;
  background:#f7f7f8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* Remove accidental focus outlines */
:focus { outline: none; }
:focus-visible { outline: 3px solid rgba(17,24,39,0.12); outline-offset: 2px; }

/* ===========================
   LOADING SCREEN
   =========================== */
#loading-screen {
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, #ffffff, #f7f7f7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
}

#loading-screen.active {
  opacity: 1;
  pointer-events: all;
}

.loading-content {
  text-align: center;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s ease 0.3s, transform 0.6s ease 0.3s;
}

#loading-screen.active .loading-content {
  opacity: 1;
  transform: translateY(0);
}

#loading-text {
  font-size: 42px;
  font-weight: 800;
  color: #0b1220;
  margin-bottom: 10px;
}

.dots span {
  font-size: 42px;
  font-weight: 800;
  color: #cfcfcf;
  animation: dotPulse 1.4s infinite ease-in-out;
}

.dots span:nth-child(2) { animation-delay: 0.2s; }
.dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotPulse {
  0% { color: #d0d0d0; }
  50% { color: #555; }
  100% { color: #d0d0d0; }
}

/* ===========================
   HEADER
   =========================== */
header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 40px;
  z-index:50;
  transition:background 300ms ease, padding 200ms ease, box-shadow 200ms ease;
  background: linear-gradient(180deg, rgba(15,23,32,0.12), rgba(15,23,32,0.08));
}

header.scrolled{
  background: linear-gradient(180deg, rgba(15,23,32,0.95), rgba(15,23,32,0.85));
  padding:12px 30px;
  box-shadow:0 6px 20px rgba(2,6,23,0.35);
}

.logo img{height:52px;width:auto;display:block}

nav{display:flex;gap:18px;align-items:center}
nav a{color:#fff;text-decoration:none;font-weight:600;opacity:0.95}

nav a.btn-nav{
  background:var(--btn-bg);
  color:var(--btn-text);
  padding:8px 14px;border-radius:8px;font-weight:700;
  border:1px solid rgba(11,18,32,0.06);
}

#mobile-menu-toggle{display:none;background:none;border:0;color:#fff;font-size:22px}

/* Hide header on portfolio page */
.portfolio-header nav,
.portfolio-header .logo {
  display: none !important;
}

/* Back button */
.back-btn {
  margin-left: 20px;
  margin-top: 10px;
}

/* ===========================
   HERO
   =========================== */
.hero{
  height:100vh;
  min-height:640px;
  background: url('images/hero.jpg') center/cover no-repeat fixed;
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  color:#fff;
}

.hero .overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(0,0,0,0.45), rgba(0,0,0,0.6));
}

.hero-content{position:relative;z-index:2;max-width:1100px;padding:0 20px}

.hero h1{
  font-size: clamp(36px, 6vw, 64px);
  line-height:1.02;
  margin:0 0 12px;
  font-weight:800;
  letter-spacing:-0.02em;
  opacity:0; transform:translateY(18px);
  transition:opacity 700ms ease, transform 700ms cubic-bezier(.2,.9,.2,1);
}

.hero p.subtle{color:rgba(255,255,255,0.9);margin-bottom:18px;opacity:0;transform:translateY(18px)}
.hero .hero-buttons{margin-top:10px;opacity:0;transform:translateY(18px)}

/* ===========================
   BUTTONS
   =========================== */
.btn{
  display:inline-block;padding:12px 22px;border-radius:10px;text-decoration:none;font-weight:700;
  transition:transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
  background:var(--btn-bg);
  color:var(--btn-text);
  border: 1px solid rgba(11,18,32,0.06);
  box-shadow: 0 6px 18px rgba(11,18,32,0.06);
}

.btn.primary{
  background:var(--btn-bg);
  color:var(--btn-text);
  box-shadow: 0 12px 30px rgba(11,18,32,0.08);
}

.btn.primary:hover{ transform:translateY(-6px); box-shadow: 0 22px 48px rgba(11,18,32,0.12); }

.btn.outline{
  background:transparent;
  color:var(--btn-bg);
  border:2px solid rgba(255,255,255,0.12);
}

.btn.outline:hover{ transform:translateY(-4px); }

/* ===========================
   REVEAL ANIMATIONS
   =========================== */
.reveal-up.in-view{opacity:1;transform:none}
.reveal-up.delay-1{transition-delay:120ms}
.reveal-up.delay-2{transition-delay:240ms}

/* ===========================
   SECTIONS
   =========================== */
.section{padding:72px 20px}
.container{max-width:1100px;margin:0 auto}
.light-bg{background:#fbfbfc}
h2{font-size:28px;margin-bottom:14px}
p{color:var(--muted);line-height:1.6}

/* ===========================
   SERVICES
   =========================== */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:18px}
.service-card{background:var(--card-bg);padding:18px;border-radius:12px;box-shadow:0 6px 20px rgba(12,18,24,0.06);transition:transform 220ms ease, box-shadow 220ms ease}
.service-card:hover{transform:translateY(-8px);box-shadow:0 20px 40px rgba(12,18,24,0.08)}

/* ===========================
   PORTFOLIO GRID
   =========================== */
.portfolio-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
.portfolio-item{position:relative;overflow:hidden;border-radius:10px;cursor:pointer;transition:transform 300ms ease}
.portfolio-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform 400ms ease}
.portfolio-item:hover img{transform:scale(1.08)}
.overlay-text{position:absolute;left:12px;bottom:12px;color:#fff;background:linear-gradient(90deg, rgba(0,0,0,0.45), rgba(0,0,0,0.25));padding:8px 12px;border-radius:8px;font-weight:700}

/* Fade-in after loading */
.fade-in-after-load {
  opacity: 0;
  transition: opacity 1.2s ease;
}

.fade-in-after-load.visible {
  opacity: 1;
}

/* ===========================
   REVIEWS
   =========================== */
.reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.review{background:#fff;padding:16px;border-radius:10px;box-shadow:0 6px 18px rgba(12,18,24,0.06);font-style:normal}

/* ===========================
   QUOTE FORM
   =========================== */
.quote-form{max-width:900px;margin-top:18px;background:#fff;padding:18px;border-radius:12px;box-shadow:0 10px 30px rgba(12,18,24,0.06)}
.form-row{display:flex;gap:12px;margin-bottom:12px}
.form-row input,.form-row select,.form-row textarea{
  flex:1;padding:12px;border-radius:8px;border:1px solid #e6e9ee;font-size:15px
}
.form-actions{display:flex;gap:12px;align-items:center}
textarea{resize:vertical}

/* ===========================
   FOOTER
   =========================== */
.site-footer{background:#0b1220;color:#fff;padding:18px 20px;margin-top:30px}
.site-footer .container{display:flex;justify-content:space-between;align-items:center}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width:900px){
  .portfolio-grid{grid-template-columns:repeat(2,1fr)}
  header{padding:12px 18px}
  #mobile-menu-toggle{display:block}
  nav{display:none}
  nav.open{display:flex;flex-direction:column;position:absolute;right:18px;top:70px;background:rgba(15,23,32,0.95);padding:12px;border-radius:8px}
}

@media (max-width:520px){
  .portfolio-grid{grid-template-columns:1fr}
  .form-row{flex-direction:column}
}