/* ============================================================
   VRAIMENT GAS SOLUTIONS — MASTER STYLESHEET v4.0
   Design Direction: Industrial Luxury — dark steel, flame gold,
   deep forest green. Bold type, dramatic contrasts, fire energy.
   Comprehensive: 800+ lines of premium styling
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700;800&family=Bebas+Neue&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  --green:        #1b6e3d;
  --green-dark:   #0e4526;
  --green-mid:    #23893f;
  --green-light:  #2dae4f;
  --green-glow:   rgba(27,110,61,0.25);
  --gold:         #e8a020;
  --gold-light:   #f5c842;
  --gold-dark:    #c47d10;
  --gold-dim:     rgba(232,160,32,0.15);
  --red:          #c0362b;
  --red-dark:     #8a251d;
  --charcoal:     #111614;
  --charcoal-2:   #1a1f1c;
  --charcoal-3:   #232b27;
  --charcoal-4:   #2d3631;
  --steel:        #2c3530;
  --steel-light:  #4a5e54;
  --white:        #ffffff;
  --off-white:    #f7f8f5;
  --off-white-2:  #ecece8;
  --muted:        #8a9e93;
  --border:       rgba(255,255,255,0.08);
  --border-light: rgba(0,0,0,0.08);
  --border-med:   rgba(0,0,0,0.12);

  --font-display: 'Bebas Neue', sans-serif;
  --font-head:    'Oswald', sans-serif;
  --font-body:    'Inter', sans-serif;

  --radius:    10px;
  --radius-lg: 18px;
  --radius-xl: 28px;
  --radius-2xl: 40px;

  --shadow-sm:  0 2px 12px rgba(0,0,0,0.15);
  --shadow-md:  0 8px 32px rgba(0,0,0,0.25);
  --shadow-lg:  0 20px 60px rgba(0,0,0,0.35);
  --shadow-xl:  0 30px 80px rgba(0,0,0,0.45);
  --glow-green: 0 0 40px rgba(27,110,61,0.4);
  --glow-gold:  0 0 30px rgba(232,160,32,0.35);
  --glow-red:   0 0 30px rgba(192,54,43,0.3);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--off-white);
  color: var(--charcoal);
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
ul { list-style: none; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--charcoal-2); }
::-webkit-scrollbar-thumb { background: var(--green); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* ===== TYPOGRAPHY ===== */
.label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}
.label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gold);
}
.label-large {
  font-size: 0.85rem;
  letter-spacing: 4px;
}
.label-dark {
  color: var(--green);
}
.label-dark::before { background: var(--green); }
.label-white {
  color: var(--gold-light);
}
.label-white::before { background: var(--gold-light); }

h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.15;
}
h1 { font-size: clamp(3rem, 8vw, 5.5rem); }
h2 { font-size: clamp(2rem, 5vw, 3.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4vw, 3.8rem);
  letter-spacing: 1px;
  color: var(--charcoal);
  margin-bottom: 20px;
}
.section-title span { color: var(--green); }
.section-title-light { color: white; }
.section-title-light span { color: var(--gold-light); }

.section-sub {
  font-size: 1.05rem;
  color: #5a6e63;
  max-width: 560px;
  line-height: 1.8;
}
.section-sub-light { color: rgba(255,255,255,0.75); }

.text-center { text-align: center; }
.text-center .section-sub { margin: 0 auto; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: 4px;
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: all 0.28s cubic-bezier(0.4,0,0.2,1);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  opacity: 0;
  transition: opacity 0.2s;
}
.btn:hover::after { opacity: 1; }
.btn-primary {
  background: var(--green);
  color: white;
  box-shadow: 0 4px 20px var(--green-glow);
}
.btn-primary:hover {
  background: var(--green-mid);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--green-glow);
}
.btn-gold {
  background: var(--gold);
  color: var(--charcoal);
  box-shadow: 0 4px 20px rgba(232,160,32,0.3);
}
.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: var(--glow-gold);
}
.btn-wa {
  background: #25D366;
  color: white;
  box-shadow: 0 4px 20px rgba(37,211,102,0.3);
}
.btn-wa:hover {
  background: #1dbf5c;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: white;
  border: 1.5px solid rgba(255,255,255,0.4);
}
.btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.08);
}
.btn-outline-dark {
  background: transparent;
  color: var(--charcoal);
  border: 1.5px solid var(--border-med);
}
.btn-outline-dark:hover {
  border-color: var(--green);
  background: rgba(27,110,61,0.05);
}
.btn-block { width: 100%; justify-content: center; }
.btn-lg { padding: 18px 42px; font-size: 1rem; }
.btn-sm { padding: 10px 22px; font-size: 0.82rem; }

/* ===== HEADER / NAVBAR ===== */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--charcoal);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}
#site-header.scrolled {
  background: rgba(17,22,20,0.97);
  backdrop-filter: blur(16px);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
.header-top {
  background: var(--green-dark);
  padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.header-top-info {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.header-top-info a, .header-top-info span {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.75);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}
.header-top-info a:hover { color: var(--gold); }
.header-top-wa {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #25D366;
  color: white;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 3px;
}
.header-top-wa:hover { background: #1dbf5c; }

.nav-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.nav-logo img { height: 48px; filter: brightness(1.2); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links li a {
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  padding: 8px 14px;
  border-radius: 4px;
  position: relative;
}
.nav-links li a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform 0.25s ease;
}
.nav-links li a:hover { color: white; }
.nav-links li a:hover::after,
.nav-links li a.active::after { transform: scaleX(1); }
.nav-links li a.active { color: white; }
.nav-cta {
  background: var(--gold);
  color: var(--charcoal) !important;
  border-radius: 3px !important;
  padding: 9px 20px !important;
}
.nav-cta:hover { background: var(--gold-light) !important; }
.nav-cta::after { display: none !important; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  width: 26px; height: 2px;
  background: white;
  transition: all 0.3s;
  display: block;
}

/* ===== HERO BANNER ===== */
.page-hero {
  background: linear-gradient(135deg, var(--charcoal) 0%, var(--charcoal-2) 60%, var(--green-dark) 100%);
  padding: 160px 0 90px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M0 0h80v80H0z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 60px;
  background: var(--off-white);
  clip-path: ellipse(55% 60px at 50% 100%);
}
.page-hero-content { position: relative; z-index: 2; }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.5rem);
  color: white;
  letter-spacing: 2px;
  line-height: 1;
  margin-bottom: 16px;
}
.page-hero h1 span { color: var(--gold); }
.page-hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  max-width: 500px;
  margin-bottom: 10px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
  font-family: var(--font-head);
}
.breadcrumb a { color: var(--gold); }
.breadcrumb a:hover { color: var(--gold-light); }

/* ===== FOOTER ===== */
#site-footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.7);
  padding-top: 80px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 56px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--border);
}
.footer-brand img { height: 52px; margin-bottom: 20px; }
.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.55);
  margin-bottom: 24px;
}
.footer-socials { display: flex; gap: 10px; }
.footer-socials a {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: all 0.2s;
}
.footer-socials a:hover { background: var(--green); }
.footer-col h4 {
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 22px;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-col ul li a::before {
  content: '›';
  color: var(--green-mid);
}
.footer-col ul li a:hover { color: white; padding-left: 4px; }
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-contact-item .ico {
  width: 32px; height: 32px;
  background: var(--green-glow);
  border: 1px solid rgba(27,110,61,0.3);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.footer-wa-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #25D366;
  color: white;
  padding: 12px 20px;
  border-radius: 4px;
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 600;
  margin-top: 20px;
  width: fit-content;
}
.footer-wa-btn:hover { background: #1dbf5c; }
.footer-bottom {
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
  flex-wrap: wrap;
}
.footer-bottom a { color: var(--gold); }

/* ===== FLOATING WA BUTTON ===== */
.wa-float {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 58px; height: 58px;
  background: #25D366;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 24px rgba(37,211,102,0.45);
  z-index: 999;
  transition: all 0.3s;
  animation: wa-pulse 2.5s ease-in-out infinite;
}
.wa-float:hover {
  transform: scale(1.08);
  animation: none;
}
@keyframes wa-pulse {
  0%, 100% { box-shadow: 0 4px 24px rgba(37,211,102,0.45); }
  50% { box-shadow: 0 4px 36px rgba(37,211,102,0.7), 0 0 0 8px rgba(37,211,102,0.12); }
}

/* ===== CARDS ===== */
.card {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 36px;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  position: relative;
  overflow: hidden;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green), var(--gold));
  transform: scaleX(0);
  transition: transform 0.3s;
}
.card:hover::before { transform: scaleX(1); }

/* ===== IMAGE GALLERY ===== */
.img-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 40px 0;
}
.img-gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 280px;
  position: relative;
  cursor: pointer;
}
.img-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.img-gallery-item:hover img { transform: scale(1.05); }
.img-gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  padding: 20px;
  color: white;
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
}

/* ===== PRICE CARD ===== */
.price-card {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all 0.3s;
  border: 1px solid var(--border-light);
}
.price-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.price-card-header {
  background: var(--charcoal);
  color: white;
  padding: 30px;
  text-align: center;
}
.price-card-price {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--gold);
}
.price-card-features {
  padding: 30px;
}
.price-card-features li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 12px;
}
.price-card .check {
  width: 22px;
  height: 22px;
  background: var(--green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.7rem;
}

/* ===== TESTIMONIAL ===== */
.testimonial-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
}
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 16px; right: 24px;
  font-family: var(--font-display);
  font-size: 5rem;
  color: var(--green);
  opacity: 0.12;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}
.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}
.stars { color: var(--gold); margin-bottom: 12px; }

/* ===== STATS ===== */
.stat-box {
  text-align: center;
  padding: 36px 24px;
}
.stat-number {
  font-family: var(--font-display);
  font-size: 3.2rem;
  color: var(--gold);
}
.stat-label {
  font-family: var(--font-head);
  font-size: 0.82rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
}

/* ===== SECTION DARK ===== */
.section-dark {
  background: var(--charcoal);
}
.section-charcoal-2 { background: var(--charcoal-2); }
.section-green { background: var(--green-dark); }
.section-offwhite { background: var(--off-white); }

/* ===== CTA STRIP ===== */
.cta-strip {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green) 100%);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.cta-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-strip h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
  color: white;
}
.cta-strip h2 span { color: var(--gold); }

/* ===== PROCESS STEPS ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--green), var(--gold));
}
.process-step {
  text-align: center;
  padding: 0 24px;
  position: relative;
}
.step-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--charcoal);
  border: 2px solid var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--gold);
  margin: 0 auto 24px;
  position: relative;
  z-index: 2;
}

/* ===== BADGES ===== */
.badge {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 3px;
}
.badge-green { background: rgba(27,110,61,0.12); color: var(--green); }
.badge-gold { background: rgba(232,160,32,0.15); color: #b07a10; }
.badge-popular { background: var(--green); color: white; }

/* ===== FEATURE LIST ===== */
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border-light);
}
.feature-list .check {
  width: 20px;
  height: 20px;
  background: var(--green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.65rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===== GRID HELPERS ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px;
}
.section { padding: 100px 0; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.grid-align-center { align-items: center; }

.img-rounded { border-radius: var(--radius-xl); overflow: hidden; }
.text-center { text-align: center; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }
.mt-40 { margin-top: 40px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .process-steps::before { display: none; }
  .img-gallery { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 70px 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .hamburger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--charcoal-2);
    flex-direction: column;
    padding: 16px;
  }
  .nav-links.open { display: flex; }
  .cta-strip-inner { flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-top-info { display: none; }
  .img-gallery { grid-template-columns: 1fr; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}
.anim-fadeup {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.anim-fadeup.visible { opacity: 1; transform: translateY(0); }
.anim-delay-1 { transition-delay: 0.1s; }
.anim-delay-2 { transition-delay: 0.2s; }
.anim-delay-3 { transition-delay: 0.3s; }
.anim-delay-4 { transition-delay: 0.4s; }