/* ============================================
   ADN CONSTRUCT — Global Stylesheet
   Theme: Industrial Luxury
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700;900&family=DM+Sans:wght@300;400;500;600&family=DM+Mono:wght@400;500&display=swap');

:root {
  --gold: #C8973F;
  --gold-light: #E5B96A;
  --gold-dark: #9A6E28;
  --bg: #141414;
  --bg2: #1C1C1C;
  --bg3: #242424;
  --surface: #2A2A2A;
  --border: #333333;
  --text: #E8E2D6;
  --text-muted: #8A8278;
  --white: #F5F0E8;
  --red: #C0392B;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-gold: 0 0 40px rgba(200,151,63,0.15);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Concrete texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

a { color: var(--gold); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--gold-light); }

img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: var(--font-body); }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; }
h1 { font-size: clamp(2.4rem, 6vw, 4.5rem); font-weight: 900; }
h2 { font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 700; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }

p { color: var(--text-muted); }

/* ============================================ LAYOUT */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; position: relative; z-index: 1; }
.section { padding: 6rem 0; }
.section--dark { background-color: var(--bg2); }
.section--surface { background-color: var(--bg3); }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.section-label::before {
  content: '';
  display: block;
  width: 2rem;
  height: 1px;
  background: var(--gold);
}

.section-title { margin-bottom: 1rem; }
.section-subtitle { color: var(--text-muted); max-width: 600px; margin-bottom: 3rem; font-size: 1.05rem; }

/* ============================================ NAV */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.2rem 0;
  transition: all var(--transition);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(20,20,20,0.95);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
  padding: 0.8rem 0;
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative; z-index: 1;
}
.nav__logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.02em;
}
.nav__logo span { color: var(--gold); }
.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}
.nav__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}
.nav__links a:hover,
.nav__links a.active { color: var(--white); }
.nav__links a.active::after {
  content: '';
  display: block;
  height: 2px;
  background: var(--gold);
  margin-top: 2px;
}
.nav__cta {
  background: var(--gold);
  color: var(--bg) !important;
  padding: 0.50rem 0.0rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: background var(--transition) !important;
}
.nav__cta:hover { background: var(--gold-light) !important; color: var(--bg) !important; }

/* External company link */
.nav__ext {
  color: var(--text-muted) !important;
  border: 1px solid var(--border);
  padding: 0.35rem 0.95rem;
  font-size: 0.72rem !important;
  letter-spacing: 0.08em;
  display: inline-flex !important;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition) !important;
}
.nav__ext:hover { color: var(--gold) !important; border-color: var(--gold) !important; }
.nav__ext svg { opacity: 0.6; transition: opacity var(--transition); }
.nav__ext:hover svg { opacity: 1; }

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all var(--transition);
}

/* Mobile Nav */
@media (max-width: 768px) {
  .nav__hamburger { display: flex; }
  .nav__links {
    position: fixed;
    inset: 0;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    font-size: 1.2rem;
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 99;
  }
  .nav__links.open { transform: translateX(0); }
  .nav__links a { font-size: 1.1rem; }
}

/* ============================================ BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.btn--primary {
  background: var(--gold);
  color: var(--bg);
}
.btn--primary:hover {
  background: var(--gold-light);
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,151,63,0.35);
}
.btn--outline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--border);
}
.btn--outline:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}
.btn--ghost {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
}
.btn--ghost:hover {
  background: var(--gold);
  color: var(--bg);
}
.btn--danger {
  background: var(--red);
  color: white;
}
.btn--danger:hover { opacity: 0.85; }
.btn--sm { padding: 0.55rem 1.2rem; font-size: 0.8rem; }

/* ============================================ CARDS */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 0;
  background: var(--gold);
  transition: height var(--transition);
}
.card:hover::before { height: 100%; }
.card:hover {
  border-color: var(--gold-dark);
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}

/* ============================================ GRID */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ============================================ FORMS */
.form-group { margin-bottom: 1.5rem; }
.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.form-control {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.9rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  outline: none;
  appearance: none;
}
.form-control:focus { border-color: var(--gold); }
.form-control::placeholder { color: var(--text-muted); opacity: 0.6; }
textarea.form-control { resize: vertical; min-height: 120px; }
select.form-control {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238A8278' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* ============================================ GOLD DIVIDER */
.gold-divider {
  width: 3rem;
  height: 3px;
  background: var(--gold);
  margin: 1.5rem 0;
}

/* ============================================ PAGE HERO */
.page-hero {
  padding: 9rem 0 5rem;
  background: var(--bg2);
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(200,151,63,0.06), transparent 60%);
}

/* ============================================ TOAST */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--surface);
  border: 1px solid var(--gold);
  color: var(--text);
  padding: 1rem 1.5rem;
  z-index: 9999;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.error { border-color: var(--red); }

/* ============================================ BADGE */
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  background: rgba(200,151,63,0.12);
  color: var(--gold);
  border: 1px solid rgba(200,151,63,0.3);
}

/* ============================================ FOOTER */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
  position: relative; z-index: 1;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}
.footer__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 1rem;
}
.footer__logo span { color: var(--gold); }
.footer__desc { font-size: 0.875rem; line-height: 1.7; margin-bottom: 1.5rem; }
.footer h4 {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
  font-family: var(--font-mono);
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 0.6rem; }
.footer ul a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer ul a:hover { color: var(--gold); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer__contact p {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.footer__contact p span { color: var(--gold); }

@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}

/* ============================================ SCROLL REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================ LOADER */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
}
.page-loader.hidden { opacity: 0; pointer-events: none; }
.loader-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: var(--gold);
  animation: pulse 1s ease infinite alternate;
}
@keyframes pulse { to { opacity: 0.4; } }

/* ============================================ ADMIN BADGE */
.admin-bar {
  position: fixed;
  bottom: 0;
  left: 0; right: 0;
  background: var(--gold);
  color: var(--bg);
  text-align: center;
  padding: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  z-index: 200;
  display: none;
}
.admin-bar a {
  color: var(--bg);
  font-weight: 700;
  text-decoration: underline;
}