/* IBS Emirates / Gulf Danish - Industrial Luxury | Mobile-First */
:root {
  --color-bg: #0a0e17;
  --color-bg-alt: #12182a;
  --color-bg-elevated: #1a2235;
  --color-surface: #f4f6f9;
  --color-surface-card: #ffffff;
  --color-accent: #5c7a99;
  --color-accent-hover: #7b96b3;
  --color-accent-bright: #8fa8c4;
  --color-text: #1a2232;
  --color-text-muted: #5a6578;
  --color-border: #d4dce6;
  --color-border-subtle: #e8ecf2;
  --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Libre Baskerville', Georgia, serif;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 2px 12px rgba(10, 14, 23, 0.06);
  --shadow-lg: 0 12px 40px rgba(10, 14, 23, 0.1);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --touch-target: 44px;
  --safe-top: env(safe-area-inset-top, 0);
  --safe-bottom: env(safe-area-inset-bottom, 0);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  font-size: clamp(15px, 2.5vw, 16px);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); }

/* Top bar - compact on mobile */
.topbar {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  color: rgba(255,255,255,0.9);
  padding: clamp(0.5rem, 2vw, 0.6rem) 0;
  font-size: clamp(0.8rem, 2vw, 0.85rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding-top: calc(clamp(0.5rem, 2vw, 0.6rem) + var(--safe-top));
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 1.5rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.topbar span { white-space: nowrap; }
.topbar a {
  color: rgba(255,255,255,0.9);
  padding: 0.25rem 0;
  min-height: var(--touch-target);
  display: inline-flex;
  align-items: center;
}
.topbar a:hover { color: var(--color-accent-bright); }

/* Header */
.site-header {
  background: var(--color-surface-card);
  box-shadow: 0 1px 0 var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(0.75rem, 2vw, 1rem) clamp(1rem, 4vw, 1.5rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.logo {
  display: flex;
  align-items: center;
  min-height: var(--touch-target);
}
.logo img { max-height: clamp(50px, 10vw, 70px); width: auto; }

/* Nav toggle - always visible on mobile, hidden on desktop */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-target);
  height: var(--touch-target);
  min-width: var(--touch-target);
  min-height: var(--touch-target);
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
  padding: 0;
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav-toggle:hover { background: var(--color-surface); }
.nav-toggle[aria-expanded="true"] { background: var(--color-bg); color: white; }

/* Nav overlay for mobile */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 23, 0.5);
  z-index: 98;
  opacity: 0;
  transition: opacity var(--transition);
}
.nav-overlay.visible {
  display: block;
  opacity: 1;
}

/* Navigation */
.nav-menu {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}
.nav-menu a {
  display: flex;
  align-items: center;
  min-height: var(--touch-target);
  padding: 0 1rem;
  color: var(--color-text);
  font-weight: 600;
  font-size: clamp(0.85rem, 1.5vw, 0.9rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav-menu a:hover, .nav-menu .active a {
  background: var(--color-bg);
  color: white;
}

/* Hero Slider */
.hero {
  position: relative;
  height: clamp(280px, 50vw, 480px);
  min-height: 260px;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}
.hero-slides {
  display: flex;
  height: 100%;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.hero-slide {
  flex: 0 0 100%;
  position: relative;
  height: 100%;
}
.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.78;
  filter: contrast(1.05) saturate(0.92);
}
.hero-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: clamp(1.25rem, 4vw, 2.5rem) clamp(1rem, 4vw, 2rem);
  padding-bottom: calc(clamp(1.25rem, 4vw, 2.5rem) + var(--safe-bottom));
  background: linear-gradient(transparent, rgba(10,14,23,0.97));
  color: rgba(255,255,255,0.95);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.hero-caption strong {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 4vw, 1.75rem);
  font-weight: 400;
  letter-spacing: 0.02em;
  display: block;
  margin-bottom: 0.25rem;
  color: #fff;
  line-height: 1.2;
}
.hero-caption span {
  opacity: 0.9;
  font-size: clamp(0.85rem, 2vw, 0.95rem);
  color: rgba(255,255,255,0.9);
  line-height: 1.4;
}
.hero-dots {
  position: absolute;
  bottom: clamp(0.75rem, 2vw, 1rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 2;
}
.hero-dot {
  width: 10px;
  height: 10px;
  min-width: 10px;
  min-height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
  padding: 0;
  border: none;
}
.hero-dot:hover { background: rgba(255,255,255,0.6); }
.hero-dot.active { background: var(--color-accent-bright); transform: scale(1.2); }
.hero-prev, .hero-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: var(--touch-target);
  height: var(--touch-target);
  min-width: var(--touch-target);
  min-height: var(--touch-target);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  z-index: 2;
}
.hero-prev:hover, .hero-next:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.hero-prev { left: clamp(0.5rem, 2vw, 1rem); }
.hero-next { right: clamp(0.5rem, 2vw, 1rem); }

/* Hero scroll hint */
.hero-scroll {
  position: absolute;
  bottom: clamp(3rem, 8vw, 4rem);
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 1.5rem;
  animation: bounce 2s infinite;
  z-index: 2;
}
.hero-scroll:hover { color: #fff; }
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-8px); }
  60% { transform: translateX(-50%) translateY(-4px); }
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 5vw, 1.5rem);
}

/* Sections */
.section { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.section-alt {
  background: linear-gradient(180deg, #eef1f6 0%, #f4f6f9 100%);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  font-weight: 400;
  color: var(--color-bg);
  margin-bottom: clamp(1.5rem, 4vw, 2rem);
  text-align: center;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

/* Intro block */
.intro-block {
  background: var(--color-surface-card);
  padding: clamp(1.5rem, 4vw, 2.75rem) clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border-subtle);
}
.intro-badge {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  font-weight: 600;
}
.intro-block h2 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.5vw, 1.65rem);
  font-weight: 400;
  color: var(--color-bg);
  margin-bottom: 1rem;
  letter-spacing: 0.01em;
  line-height: 1.3;
}
.intro-block p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.7;
  font-size: clamp(0.95rem, 1.5vw, 1rem);
}

/* Services grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: clamp(1.25rem, 3vw, 1.75rem);
  margin-top: clamp(1.5rem, 4vw, 2rem);
}
.service-card {
  background: var(--color-surface-card);
  padding: clamp(1.5rem, 3vw, 2rem) clamp(1.5rem, 3vw, 2.25rem);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--color-border-subtle);
  border-left: 4px solid var(--color-accent);
}
.service-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-left-color: var(--color-accent-hover);
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.2rem);
  font-weight: 400;
  color: var(--color-bg);
  margin-bottom: 0.75rem;
  letter-spacing: 0.01em;
  line-height: 1.3;
}
.service-card p {
  color: var(--color-text-muted);
  font-size: clamp(0.9rem, 1.5vw, 0.95rem);
  line-height: 1.6;
}
.service-card img {
  border-radius: var(--radius);
  margin-bottom: 1rem;
  border: 1px solid var(--color-border-subtle);
  width: 100%;
}

/* Features callout */
.features-callout {
  background: linear-gradient(165deg, var(--color-bg) 0%, var(--color-bg-alt) 50%, var(--color-bg-elevated) 100%);
  color: rgba(255,255,255,0.95);
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.5rem, 4vw, 2.5rem);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}
.features-callout h3 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 400;
  margin-bottom: 1.25rem;
  color: var(--color-accent-bright);
  letter-spacing: 0.02em;
}
.features-callout ul { list-style: none; }
.features-callout li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: rgba(255,255,255,0.88);
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  line-height: 1.5;
}
.features-callout li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--color-accent-bright);
  font-size: 0.75rem;
}
.features-callout .partner-logos {
  display: flex;
  gap: 1.25rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.features-callout .partner-logos img { max-height: 45px; width: auto; opacity: 0.9; }

/* Contact / Map */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2rem);
  align-items: start;
}
.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  order: 1;
}
.contact-map img { width: 100%; height: auto; }
.contact-info { order: 2; }
.contact-info h3 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.4rem);
  margin-bottom: 1rem;
  color: var(--color-bg);
}
.contact-info ul { list-style: none; }
.contact-info li {
  padding: 0.5rem 0;
  color: var(--color-text-muted);
  font-size: clamp(0.95rem, 1.5vw, 1rem);
}
.contact-info a {
  color: var(--color-accent);
  min-height: var(--touch-target);
  display: inline-flex;
  align-items: center;
}

/* Footer */
.site-footer {
  background: linear-gradient(180deg, var(--color-bg) 0%, #080b12 100%);
  color: rgba(255,255,255,0.75);
  padding: clamp(1.5rem, 4vw, 2.25rem) 0;
  padding-bottom: calc(clamp(1.5rem, 4vw, 2.25rem) + var(--safe-bottom));
  margin-top: clamp(2.5rem, 6vw, 4rem);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 1.5rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1rem;
}
.footer-inner p { font-size: clamp(0.85rem, 1.5vw, 0.9rem); }
.site-footer a {
  color: var(--color-accent-bright);
  min-height: var(--touch-target);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.site-footer a:hover { color: #fff; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  padding: 0 1.5rem;
  background: var(--color-accent);
  color: #fff !important;
  font-weight: 600;
  font-size: clamp(0.85rem, 1.5vw, 0.9rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  border-color: var(--color-accent-hover);
}

/* Page content */
.page-content { padding: clamp(1rem, 3vw, 2rem) 0; }
.page-content h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--color-bg);
  margin-bottom: 1.25rem;
  line-height: 1.3;
}

/* Projects flow - single page */
.projects-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 5vw, 3rem);
}
.project-block {
  background: var(--color-surface-card);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  border-left: 4px solid var(--color-accent);
}
.project-block h3 {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.35rem);
  color: var(--color-bg);
  margin-bottom: 1rem;
}
.project-block p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}
.project-block .project-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.project-logo {
  max-width: 280px;
  margin-top: 1rem;
}

/* Partners grid - mini logos */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.partner-mini {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--color-surface-card);
  border-radius: var(--radius);
  border: 1px solid var(--color-border-subtle);
  text-align: center;
}
.partner-mini img { max-height: 40px; width: auto; }
.partner-mini span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* Partners page */
.partner-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2rem);
  padding: clamp(1.5rem, 4vw, 2rem) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}
.partner-card:last-child { border-bottom: none; }
.partner-card h3 {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.35rem);
  color: var(--color-bg);
  margin-bottom: 0.75rem;
}
.partner-card img {
  max-width: 100%;
  width: 100%;
  border-radius: var(--radius);
  order: -1;
}

/* Projects page */
.project-section { margin-bottom: clamp(2rem, 4vw, 3rem); }
.project-section h3 {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.25rem);
  margin-bottom: 1rem;
  color: var(--color-bg);
}
.project-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.project-images img { border-radius: var(--radius); width: 100%; }

/* Back to top */
.to-top {
  position: fixed;
  bottom: calc(1.5rem + var(--safe-bottom));
  right: clamp(1rem, 4vw, 2rem);
  width: var(--touch-target);
  height: var(--touch-target);
  background: var(--color-bg-elevated);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.to-top.visible { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--color-accent); border-color: var(--color-accent); transform: translateY(-4px); }

/* Tables - scroll on mobile */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.content-table {
  width: 100%;
  min-width: 400px;
  border-collapse: collapse;
  font-size: clamp(0.8rem, 1.5vw, 0.9rem);
}
.content-table th,
.content-table td {
  padding: clamp(0.6rem, 1.5vw, 0.75rem) clamp(0.75rem, 2vw, 1rem);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.content-table th {
  background: var(--color-bg);
  color: white;
  font-weight: 600;
  font-size: clamp(0.75rem, 1.5vw, 0.85rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
}
.content-table tr:hover td { background: var(--color-surface); }
.content-table a { color: var(--color-accent); }

/* Two-column grid */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2rem);
  align-items: start;
}

/* Project list */
.project-list { list-style: none; }
.project-list li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--color-text-muted);
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  line-height: 1.5;
}
.project-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 600;
}

/* ========== TABLET & UP ========== */
@media (min-width: 600px) {
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .contact-map { order: 1; }
  .contact-info { order: 2; }
  .partner-card {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
  .partner-card img { order: 0; max-width: 300px; }
  .footer-inner { flex-direction: row; justify-content: space-between; text-align: left; }
  .grid-2 { grid-template-columns: 1fr 1fr; align-items: center; }
}

/* ========== DESKTOP ========== */
@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .nav-overlay { display: none !important; }
}

/* ========== MOBILE NAV ========== */
@media (max-width: 899px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100vh;
    height: 100dvh;
    background: var(--color-surface-card);
    flex-direction: column;
    padding: calc(60px + var(--safe-top)) 0 2rem;
    box-shadow: -8px 0 32px rgba(10, 14, 23, 0.15);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 99;
    overflow-y: auto;
    align-items: stretch;
    gap: 0;
  }
  .nav-menu a {
    padding: 1rem 1.5rem;
    min-height: 52px;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border-subtle);
  }
  body.nav-open { overflow: hidden; }
  body.nav-open .nav-menu { transform: translateX(0); }
  .nav-menu:not(.open) { transform: translateX(100%); }
}