/* =========================================================
   VOREN ENERJİ MÜHENDİSLİK - Ana Stil Dosyası
   ========================================================= */

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

/* --- CSS Variables --- */
:root {
  --navy:         #3a7bd5;
  --navy-dark:    #2563b8;
  --navy-light:   #5a9fe8;
  --accent:       #5b9ee8;
  --accent-light: #dbeeff;
  --white:        #ffffff;
  --off-white:   #fafafa;
  --gray-50:     #f9fafb;
  --gray-100:    #f3f4f6;
  --gray-200:    #e5e7eb;
  --gray-300:    #d1d5db;
  --gray-400:    #9ca3af;
  --gray-500:    #6b7280;
  --gray-600:    #4b5563;
  --gray-700:    #374151;
  --gray-800:    #1f2937;
  --gray-900:    #111827;
  --anthracite:  #2d3748;
  --text:        #1f2937;
  --text-muted:  #6b7280;
  --border:      #e5e7eb;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:   0 8px 32px rgba(0,0,0,.12);
  --radius-sm:   35px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --transition:  0.25s ease;
  --max-width:   1240px;
  --header-h:    80px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* --- Layout --- */
.wrap {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-sm { padding: 56px 0; }
.section-lg { padding: 100px 0; }

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--navy);
}
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.15rem; }
p { color: var(--text); line-height: 1.75; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--accent);
}

.section-title {
  margin-bottom: 16px;
}
.section-desc {
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 40px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--navy);
  color: var(--white);
  border: 2px solid var(--navy);
}
.btn-primary:hover {
  background: var(--navy-dark);
  border-color: var(--navy-dark);
}
.btn-header {
  background: rgba(243, 244, 246, 0.48);
  color: rgb(255, 255, 255);
  border: none;
  --radius-sm: 28px;
}
.btn-header:hover {
  background: rgba(243, 244, 246, 0.68);
}
.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}
.btn-outline:hover {
  background: var(--navy);
  color: var(--white);
}
.btn-white {
  background: var(--white);
  color: var(--navy);
  border: 2px solid var(--white);
}
.btn-white:hover {
  background: transparent;
  color: var(--white);
}
.btn-gold {
  background: var(--accent);
  color: var(--white);
  border: 2px solid var(--accent);
}
.btn-gold:hover {
  background: var(--navy-light);
  border-color: var(--navy-light);
}
.btn-whatsapp {
  background: #25D366;
  color: var(--white);
  border: 2px solid #25D366;
}
.btn-whatsapp:hover {
  background: #1ebe5d;
  border-color: #1ebe5d;
}
.btn svg { width: 18px; height: 18px; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img {
  height: 44px;
  width: auto;
}
.site-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: 0.02em;
}
.logo-sub {
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Main Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-item {
  position: relative;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: white;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--navy);
  background: var(--gray-50);
}
.nav-link svg { width: 14px; height: 14px; opacity: 0.6; transition: transform var(--transition); }
.nav-item:hover .nav-link svg { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  min-width: 260px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
  z-index: 100;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  font-size: 0.85rem;
  color: var(--gray-700);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-dropdown a:hover {
  background: var(--gray-50);
  color: var(--navy);
}
.nav-dropdown a svg {
  width: 16px; height: 16px;
  color: var(--accent);
  flex-shrink: 0;
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
 background: #f3f4f67a;
  border-radius: 20px;
  padding: 3px;
}
.lang-btn {
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  transition: var(--transition);
}
.lang-btn.active {
  background: var(--navy);
  color: var(--white);
}

/* Mobile-only lang toggle (next to hamburger) */
.lang-toggle-mobile {
  display: none;
  align-items: center;
  gap: 2px;
  background: rgba(255,255,255,0.15);
  border-radius: 20px;
  padding: 3px;
}
.lang-toggle-mobile .lang-btn {
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  transition: var(--transition);
}
.lang-toggle-mobile .lang-btn.active {
  background: var(--white);
  color: var(--navy);
}
@media (max-width: 1024px) {
  .lang-toggle-mobile { display: flex; }
}

/* Mobile menu toggle */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  background: var(--white);
  border-top: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  z-index: 999;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 16px 0 24px;
}
.mobile-nav.open { display: block; }
.mobile-nav-link {
  display: block;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
}
.mobile-nav-link:last-child { border-bottom: none; }
.mobile-nav-sub {
  padding: 8px 24px 8px 40px;
  font-size: 0.85rem;
  color: var(--gray-600);
  display: block;
  border-bottom: 1px solid var(--gray-100);
}
.mobile-nav-group-title {
  padding: 10px 24px 4px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400);
}

/* =========================================================
   HERO SLIDER
   ========================================================= */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 900px;
  overflow: hidden;
}
.hero-slides {
  display: flex;
  height: 100%;
  transition: transform 0.7s cubic-bezier(0.77, 0, 0.18, 1);
}
.hero-slide {
  flex: 0 0 100%;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgb(10 22 48 / 50%) 26%, rgba(10, 22, 48, 0.10) 100%);
}

/* Gradient placeholders until real images are added */
.hero-slide:nth-child(1) .hero-bg { background-color: #0e1e38; background-image: url('../img/hero-1.webp'), linear-gradient(135deg, #0e1e38 0%, #1a3560 100%); }
.hero-slide:nth-child(2) .hero-bg { background-color: #0c1c36; background-image: url('../img/hero-2.webp'), linear-gradient(135deg, #0c1c36 0%, #183258 100%); }
.hero-slide:nth-child(3) .hero-bg { background-color: #101f3a; background-image: url('../img/hero-3.webp'), linear-gradient(135deg, #101f3a 0%, #1c3762 100%); }
.hero-slide:nth-child(4) .hero-bg { background-color: #0b1a32; background-image: url('../img/hero-4.webp'), linear-gradient(135deg, #0b1a32 0%, #162e54 100%); }
.hero-slide:nth-child(5) .hero-bg { background-color: #0d1e3a; background-image: url('../img/hero-5.webp'), linear-gradient(135deg, #0d1e3a 0%, #1a3460 100%); }

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-slide .btn-gold {
    background: #ffffff;
    color: #000000;
    border: none;
    font-weight: bold;
    font-size: 15px;
}

.hero-slide  .btn-white {
    background: #f3f4f67a;
    color: #ffffff;
    border: 0px solid var(--white);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212, 228, 241, 0.15);
  border: 1px solid rgba(212, 228, 241, 0.35);
  color: var(--accent-light);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-title {
  color: var(--white);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 18px;
  max-width: 680px;
}
.hero-title span { color: #ffffff; }
.hero-desc {
  color: rgba(255,255,255,0.82);
  font-size: 1.05rem;
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Slider controls */
.hero-controls {
  position: absolute;
  bottom: 36px;
  left: 0; right: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.hero-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}
.hero-dot.active {
  background: var(--white);
  width: 24px;
  border-radius: 4px;
}

.hero-arrows {
  position: absolute;
  bottom: 50%;
  transform: translateY(50%);
  z-index: 3;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 20px;
  pointer-events: none;
}
.hero-arrow {
  pointer-events: all;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}
.hero-arrow:hover {
  background: rgba(255,255,255,0.28);
}
.hero-arrow svg { width: 20px; height: 20px; }

/* =========================================================
   STATS STRIP
   ========================================================= */
.stats-strip {
  background: var(--navy-dark);
  padding: 0;
}
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-item {
  padding: 36px 24px;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.1);
  position: relative;
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-num span { color: var(--accent-light); }
.stat-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  font-weight: 500;
}

/* =========================================================
   ABOUT SECTION (Homepage snippet)
   ========================================================= */
.about-section {
  background: var(--white);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-image {
  position: relative;
}
.about-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  aspect-ratio: 4/3;
}
.about-video {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: var(--radius-lg);
  object-fit: cover;
  display: block;
}
.about-image-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-image-placeholder svg {
  width: 80px; height: 80px;
  color: rgba(255,255,255,0.25);
}
.about-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--accent);
  color: var(--white);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.about-badge .num {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}
.about-badge .lbl {
  font-size: 0.78rem;
  font-weight: 500;
  opacity: 0.9;
}
.about-text p { margin-bottom: 18px; color: var(--text-muted); }
.iso-badges {
  display: flex;
  gap: 10px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.iso-badge {
  background: var(--gray-100);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--navy);
}

/* =========================================================
   SERVICES SECTION
   ========================================================= */
.services-section {
  background: var(--off-white);
}
.services-header {
  text-align: center;
  margin-bottom: 52px;
}
.services-header .section-label { justify-content: center; }
.services-header .section-label::before { display: none; }
.services-header .section-desc { margin: 0 auto; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--navy);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 52px; height: 52px;
  background: rgba(24,50,84,0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--navy);
  transition: var(--transition);
}
.service-card:hover .service-icon {
  background: var(--navy);
  color: var(--white);
}
.service-icon svg { width: 26px; height: 26px; }
.service-card h3 { margin-bottom: 10px; font-size: 1.05rem; }
.service-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.65;
  margin-bottom: 20px;
}
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  transition: gap var(--transition);
}
.service-link svg { width: 16px; height: 16px; }
.service-link:hover { gap: 10px; }

/* =========================================================
   REFERENCES SLIDER (Homepage)
   ========================================================= */
.refs-section {
  background: var(--white);
  overflow: hidden;
}
.refs-header {
  text-align: center;
  margin-bottom: 48px;
}
.refs-track-wrap {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}
.refs-track {
  display: flex;
  gap: 0;
  animation: scrollRefs 30s linear infinite;
  width: max-content;
}
.refs-track:hover { animation-play-state: paused; }
@keyframes scrollRefs {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.ref-logo-item {
  flex: 0 0 auto;
  padding: 16px 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--border);
  min-width: 160px;
}
.ref-logo-item img {
  height: 48px;
  width: auto;
  object-fit: contain;
}
.ref-logo-placeholder {
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gray-500);
  letter-spacing: 0.04em;
  text-align: center;
}

/* =========================================================
   CTA BANNER
   ========================================================= */
.cta-banner {
  background:
    linear-gradient(to right, rgba(37,99,184,0.70) 0%, rgba(58,123,213,0.60) 55%, rgba(37,99,184,0.50) 100%),
    url('../img/footer-top.webp') center / cover no-repeat;
  padding: 72px 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.cta-text h2 { color: var(--white); }
.cta-text p { color: rgba(255,255,255,0.72); max-width: 520px; margin-top: 10px; }
.cta-actions { display: flex; gap: 14px; flex-shrink: 0; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: #111d3a;
  padding: 64px 0 0;
  color: rgba(255,255,255,0.75);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo-name { color: var(--white); }
.footer-brand .logo-sub { color: rgba(255,255,255,0.5); }
.footer-brand p {
  margin-top: 16px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
}
.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.social-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.social-icon:hover {
  background: var(--navy);
  color: var(--white);
}
.social-icon svg { width: 16px; height: 16px; }
.footer-col h4 {
  color: var(--white);
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 700;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--white); padding-left: 4px; }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-contact-item svg {
  width: 16px; height: 16px;
  color: var(--accent-light);
  flex-shrink: 0;
  margin-top: 2px;
}
.footer-contact-item span {
  font-size: 0.83rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}
.footer-bottom-links {
  display: flex;
  gap: 20px;
}
.footer-bottom-links a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
}
.footer-bottom-links a:hover { color: rgba(255,255,255,0.7); }

/* =========================================================
   WHATSAPP BUTTON
   ========================================================= */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}
.whatsapp-btn {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: var(--transition);
  animation: waPulse 2s ease infinite;
}
.whatsapp-btn:hover { transform: scale(1.08); box-shadow: 0 6px 28px rgba(37,211,102,0.55); }
.whatsapp-btn svg { width: 28px; height: 28px; }
@keyframes waPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); }
  50%       { box-shadow: 0 4px 30px rgba(37,211,102,0.65); }
}
.whatsapp-tooltip {
  background: var(--white);
  color: var(--gray-700);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(8px);
  transition: all var(--transition);
  pointer-events: none;
}
.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* =========================================================
   PAGE HERO (Inner pages)
   ========================================================= */
.page-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  padding: 100px 0 56px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: -80px; left: 10%;
  width: 240px; height: 240px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero h1 { color: var(--white); margin-bottom: 10px; }
.page-hero p { color: rgba(255,255,255,0.72); max-width: 860px; }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumb a {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: rgba(255,255,255,0.9); }
.breadcrumb span {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}
.breadcrumb .current {
  font-size: 0.82rem;
  color: var(--accent-light);
  font-weight: 500;
}

/* =========================================================
   CORPORATE PAGE
   ========================================================= */
.about-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-sticky { position: sticky; top: 100px; }
.vision-mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}
.vm-card {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
}
.vm-card .icon {
  width: 44px; height: 44px;
  background: var(--navy);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  margin-bottom: 14px;
}
.vm-card .icon svg { width: 22px; height: 22px; }
.vm-card h3 { font-size: 1rem; margin-bottom: 10px; }
.vm-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; }
.quality-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 32px;
}
.iso-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.iso-card {
  background: var(--navy);
  color: var(--white);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}
.iso-card .iso-num {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 4px;
}
.iso-card .iso-name {
  font-size: 0.72rem;
  opacity: 0.7;
  line-height: 1.3;
}

/* =========================================================
   SERVICES PAGE & SUBPAGES
   ========================================================= */
.services-page-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-page-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition);
}
.service-page-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--navy);
  transform: translateY(-2px);
}
.service-page-card .svc-icon {
  width: 56px; height: 56px;
  background: rgba(24,50,84,0.07);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--navy);
  margin-bottom: 18px;
}
.service-page-card .svc-icon svg { width: 28px; height: 28px; }
.service-page-card h3 { margin-bottom: 10px; }
.service-page-card p { font-size: 0.87rem; color: var(--text-muted); margin-bottom: 20px; line-height: 1.65; }

/* Service Detail Layout */
.service-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}
.service-detail-main {}
.service-detail-image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
}
.service-detail-image-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
}
.service-detail-image-placeholder svg { width: 64px; height: 64px; color: rgba(255,255,255,0.25); }
.service-detail-main h2 { margin-bottom: 16px; font-size: 1.6rem; }
.service-detail-main > p { color: var(--text-muted); margin-bottom: 28px; line-height: 1.8; }
.scope-list {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 32px;
}
.scope-list h4 {
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 16px;
  font-weight: 700;
}
.scope-list ul { display: flex; flex-direction: column; gap: 10px; }
.scope-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.scope-list li::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--navy);
  flex-shrink: 0;
  margin-top: 6px;
}

/* Service Sidebar */
.service-sidebar { position: sticky; top: 100px; }
.sidebar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 24px;
}
.sidebar-card-title {
  background: var(--navy);
  color: var(--white);
  padding: 16px 20px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.sidebar-service-list { padding: 8px; }
.sidebar-service-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--gray-700);
  transition: var(--transition);
}
.sidebar-service-list a:hover, .sidebar-service-list a.active {
  background: var(--gray-50);
  color: var(--navy);
}
.sidebar-service-list a.active { font-weight: 600; }
.sidebar-service-list a svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }
.sidebar-contact {
  background: var(--navy);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
}
.sidebar-contact h4 { color: var(--white); margin-bottom: 10px; }
.sidebar-contact p { color: rgba(255,255,255,0.65); font-size: 0.85rem; margin-bottom: 20px; }

/* =========================================================
   PROJECTS PAGE
   ========================================================= */
.projects-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 40px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0;
}
.project-tab {
  padding: 12px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
}
.project-tab.active {
  color: var(--navy);
  border-bottom-color: var(--navy);
}
.project-tab-content { display: none; }
.project-tab-content.active { display: block; }
.projects-placeholder {
  text-align: center;
  padding: 72px 24px;
  background: var(--off-white);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border);
}
.projects-placeholder svg { width: 56px; height: 56px; color: var(--gray-300); margin: 0 auto 16px; }
.projects-placeholder h3 { color: var(--gray-500); font-size: 1.1rem; margin-bottom: 8px; }
.projects-placeholder p { color: var(--gray-400); font-size: 0.875rem; }

/* =========================================================
   REFERENCES PAGE
   ========================================================= */
.refs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.ref-grid-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 2/1;
  overflow: hidden;
  min-width: 0;
  transition: var(--transition);
}
.ref-grid-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--navy);
}
.ref-grid-item img {
  max-height: 56px;
  max-width: 100%;
  width: auto;
  object-fit: contain;
}
.ref-grid-item-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
  width: 100%;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--navy);
  text-align: center;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

/* =========================================================
   POLICY PAGES
   ========================================================= */
.policy-content h2 {
  font-size: 1.25rem;
  color: var(--navy);
  margin: 40px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}
.policy-content h3 {
  font-size: 1rem;
  color: var(--navy-light);
  margin: 24px 0 8px;
}
.policy-content p {
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 14px;
}
.policy-content ul {
  margin: 0 0 16px 20px;
  color: var(--text);
  line-height: 1.8;
}
.policy-content ul li { margin-bottom: 6px; }

/* =========================================================
   CONTACT PAGE
   ========================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 48px;
  align-items: start;
}
.contact-form-wrap {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.contact-form-wrap h2 { margin-bottom: 8px; }
.contact-form-wrap > p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 28px; }
.form-group { margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-label {
  display: block;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--navy);
}
.form-textarea { resize: vertical; min-height: 130px; }
.form-submit { width: 100%; justify-content: center; }
.form-success {
  display: none;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  color: #166534;
  font-size: 0.88rem;
  font-weight: 500;
  margin-top: 16px;
  align-items: center;
  gap: 8px;
}
.form-success.show { display: flex; }
.form-success svg { width: 18px; height: 18px; flex-shrink: 0; }

.contact-info-wrap { position: sticky; top: 100px; }
.contact-info-card {
  background: var(--navy);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 24px;
}
.contact-info-card h3 { color: var(--white); margin-bottom: 24px; }
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 22px;
}
.contact-info-item:last-child { margin-bottom: 0; }
.contact-info-icon {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  flex-shrink: 0;
}
.contact-info-icon svg { width: 18px; height: 18px; }
.contact-info-text { color: rgba(255,255,255,0.55); font-size: 0.8rem; margin-bottom: 2px; }
.contact-info-value { color: var(--white); font-size: 0.92rem; font-weight: 500; line-height: 1.4; }
.contact-social-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.contact-social-card h4 { margin-bottom: 16px; }
.contact-social-links {
  display: flex;
  gap: 10px;
}
.contact-social-link {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  transition: var(--transition);
}
.contact-social-link:hover { background: var(--navy); color: var(--white); }
.contact-social-link svg { width: 18px; height: 18px; }

/* =========================================================
   ANIMATIONS
   ========================================================= */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }
.fade-up-delay-5 { transition-delay: 0.5s; }

/* =========================================================
   UTILITIES
   ========================================================= */
.text-center { text-align: center; }
.text-gold { color: var(--accent); }
.text-navy { color: var(--navy); }
.text-muted { color: var(--text-muted); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-32 { margin-bottom: 32px; }
.d-flex { display: flex; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.align-center { align-items: center; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .main-nav, .header-actions .btn { display: none; }
  .hamburger { display: flex; }
  .hamburger span { background: var(--white); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .services-page-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(3) { border-top: 1px solid rgba(255,255,255,0.1); }
  .stat-item:nth-child(4) { border-top: 1px solid rgba(255,255,255,0.1); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image { order: -1; }
  .service-detail-layout { grid-template-columns: 1fr; }
  .service-sidebar { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-info-wrap { position: static; }
  .cta-inner { flex-direction: column; text-align: center; }
  .refs-grid { grid-template-columns: repeat(3, 1fr); }
  .about-detail-grid { grid-template-columns: 1fr; }
  .about-sticky { position: static; }
  .lang-toggle { display: none; }
}
@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .hero { height: 65vh; margin-top: var(--header-h); }
  .page-hero { margin-top: var(--header-h); }
  .site-header {
    position: fixed;
    top: 0;
    background: var(--navy);
  }
  .hamburger span { background: var(--white); }
  .section { padding: 56px 0; }
  .section-lg { padding: 64px 0; }
  .services-grid { grid-template-columns: 1fr; }
  .services-page-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .vision-mission-grid { grid-template-columns: 1fr; }
  .quality-grid { grid-template-columns: 1fr; gap: 32px; }
  .iso-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-title { font-size: 2rem; }
  .hero-actions { flex-direction: row; align-items: center; flex-wrap: wrap; }
  .hero-arrows { display: none; }
  .refs-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px; }
  .about-badge { display: none; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { justify-content: center; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .refs-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .iso-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
}