/* ===========================
   RAIYANTEX SOLUTIONS
   Main Stylesheet
=========================== */

:root {
  --green: #6ebef3;
  --green-light: #4caf50;
  --green-dark: #013378;
  --green-pale: #e8f5e9;
  --accent: #ff6f00;
  --text-dark: #fcad0f;
  --text-mid: #444;
  --text-light: #777;
  --white: #ffffff;
  --bg-light: #cbddf1;
  --border: #e0e0e0;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 32px rgba(0,0,0,0.14);
  --radius: 10px;
  --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* ===== TOP BAR ===== */
.top-bar {
  background: var(--green-dark);
  color: #cfe8cf;
  font-size: 0.82rem;
  padding: 6px 0;
}
.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.top-bar a { color: #cfe8cf; transition: color var(--transition); }
.top-bar a:hover { color: var(--white); }
.top-contact span { margin-right: 18px; }
.top-contact span i { margin-right: 5px; }
.top-social a { margin-left: 10px; font-size: 0.9rem; }

/* ===== HEADER / NAV ===== */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.10);
  transition: box-shadow var(--transition);
}
header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.15); }

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo img { height: 75%; }
.logo-text .brand { font-size: 1.35rem; font-weight: 700; color: var(--green-dark); line-height: 1.2; }
.logo-text .tagline { font-size: 0.72rem; color: var(--text-light); letter-spacing: 0.5px; }

nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
nav ul li { position: relative; }
nav ul li a {
  display: block;
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
}
nav ul li a:hover,
nav ul li a.active {
  color: var(--green);
  background: var(--green-pale);
}

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  min-width: 230px;
  box-shadow: var(--shadow-hover);
  border-radius: var(--radius);
  border-top: 3px solid var(--green);
  padding: 10px 0;
  z-index: 999;
  animation: fadeDown 0.2s ease;
}
.dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu li a {
  padding: 9px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 0;
}
.dropdown-menu li a:hover { background: var(--green-pale); color: var(--green); }

.nav-cta {
  background: var(--green) !important;
  color: var(--white) !important;
  border-radius: 6px !important;
  padding: 9px 18px !important;
}
.nav-cta:hover { background: var(--green-dark) !important; color: var(--white) !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--green-dark);
  border-radius: 2px;
  transition: all var(--transition);
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 540px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green) 60%, #388e3c 100%);
  color: var(--white);
}
.hero-bg {
  position: absolute; inset: 0;
  background: url('../images/hero-bg.svg') center/cover no-repeat;
  opacity: 0.12;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  padding: 80px 0;
  animation: fadeUp 0.7s ease both;
}
.hero-eyebrow {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50px;
  padding: 5px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
}
.hero h1 span { color: #a5d6a7; }
.hero p {
  font-size: 1.05rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover { background: #e65100; border-color: #e65100; transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover { background: rgba(255,255,255,0.15); transform: translateY(-2px); }
.btn-green {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
}
.btn-green:hover { background: var(--green-dark); }

/* ===== SECTION COMMON ===== */
section { padding: 72px 0; }
.section-tag {
  display: inline-block;
  background: var(--green-pale);
  color: var(--green-dark);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
  line-height: 1.25;
}
.section-title span { color: var(--green); }
.section-sub {
  font-size: 1rem;
  color: var(--text-light);
  max-width: 600px;
  margin-bottom: 48px;
}
.section-header { margin-bottom: 48px; }
.section-header.center { text-align: center; }
.section-header.center .section-sub { margin: 0 auto 48px; }

/* ===== STATS BAR ===== */
.stats-bar {
  background: var(--green-dark);
  color: var(--white);
  padding: 36px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: #a5d6a7;
  line-height: 1;
}
.stat-label {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: 6px;
}

/* ===== SERVICES CARDS ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--green);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 56px; height: 56px;
  background: var(--green-pale);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.service-icon svg { width: 28px; height: 28px; }
.service-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; color: var(--text-dark); }
.service-card p { font-size: 0.88rem; color: var(--text-light); line-height: 1.65; }
.service-card .read-more {
  display: inline-flex; align-items: center; gap: 5px;
  margin-top: 16px;
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--green);
  transition: gap var(--transition);
}
.service-card:hover .read-more { gap: 10px; }

/* ===== WHY US ===== */
.why-bg { background: var(--bg-light); }
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.why-image { position: relative; }
.why-image img { border-radius: 14px; box-shadow: var(--shadow); width: 100%; }
.why-badge {
  position: absolute;
  bottom: -18px; right: -18px;
  background: var(--green);
  color: var(--white);
  padding: 18px 22px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow);
}
.why-badge .num { font-size: 2rem; font-weight: 800; line-height: 1; }
.why-badge .label { font-size: 0.78rem; opacity: 0.85; }
.why-points { display: flex; flex-direction: column; gap: 18px; margin-top: 28px; }
.why-point { display: flex; gap: 16px; align-items: flex-start; }
.why-point-icon {
  width: 44px; height: 44px; min-width: 44px;
  background: var(--green-pale);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--green);
  font-size: 1.1rem;
}
.why-point h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.why-point p { font-size: 0.85rem; color: var(--text-light); }

/* ===== CERTIFICATIONS TICKER ===== */
.cert-section { background: var(--white); padding: 50px 0; }
.cert-ticker-wrap { overflow: hidden; position: relative; }
.cert-ticker-wrap::before,
.cert-ticker-wrap::after {
  content: '';
  position: absolute; top: 0; bottom: 0; width: 80px; z-index: 2;
  pointer-events: none;
}
.cert-ticker-wrap::before { left: 0; background: linear-gradient(to right, var(--white), transparent); }
.cert-ticker-wrap::after  { right: 0; background: linear-gradient(to left, var(--white), transparent); }
.cert-ticker {
  display: flex;
  width: max-content;
  animation: ticker 28s linear infinite;
}
.cert-ticker:hover { animation-play-state: paused; }
.cert-item {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 30px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 0 12px;
  white-space: nowrap;
  /* background: var(--bg-light); */
  background:color(#f7f7f7);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-mid);
  transition: all var(--transition);
  cursor: default;
}
.cert-item:hover { background: var(--green-pale); color: var(--green-dark); border-color: var(--green-light); }
.cert-item .dot { width: 10px; height: 10px; background: var(--green); border-radius: 50%; }

.cert-item {
  display: flex;
  align-items: center;
  gap: 10px;
}
.cert-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}
@keyframes ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===== PROCESS ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 38px; left: 80px; right: 80px;
  height: 2px;
  background: linear-gradient(to right, var(--green-pale), var(--green), var(--green-pale));
}
.process-step { text-align: center; padding: 24px 20px; position: relative; z-index: 1; }
.step-num {
  width: 60px; height: 60px;
  background: var(--green);
  color: var(--white);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 800;
  margin: 0 auto 16px;
  border: 4px solid var(--white);
  box-shadow: 0 0 0 3px var(--green-light);
}
.process-step h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 0.82rem; color: var(--text-light); }

/* ===== INDUSTRIES ===== */
.industry-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
}
.industry-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}
.industry-card:hover { background: var(--green-pale); border-color: var(--green-light); transform: translateY(-3px); }
.industry-card svg { width: 36px; height: 36px; margin: 0 auto 12px; color: var(--green); }
.industry-card span { font-size: 0.82rem; font-weight: 600; color: var(--text-mid); }

/* ===== TESTIMONIALS ===== */
.testimonials-bg { background: var(--bg-light); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  position: relative;
  transition: box-shadow var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-hover); }
.quote-icon {
  position: absolute;
  top: 20px; right: 24px;
  font-size: 3rem;
  line-height: 1;
  color: var(--green-pale);
  font-family: Georgia, serif;
}
.testimonial-card p { font-size: 0.9rem; color: var(--text-mid); font-style: italic; margin-bottom: 20px; line-height: 1.7; }
.t-author { display: flex; align-items: center; gap: 12px; }
.t-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1rem;
}
.t-name { font-weight: 700; font-size: 0.9rem; }
.t-company { font-size: 0.78rem; color: var(--text-light); }
.stars { color: #ffc107; font-size: 0.85rem; margin-bottom: 12px; }

/* ===== CTA BANNER ===== */
.cta-section {
  background: linear-gradient(135deg, var(--green-dark), var(--green));
  color: var(--white);
  text-align: center;
  padding: 72px 0;
}
.cta-section h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 16px; }
.cta-section p { opacity: 0.88; margin-bottom: 32px; font-size: 1rem; max-width: 540px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-white { background: var(--white); color: var(--green-dark); border-color: var(--white); }
.btn-white:hover { background: #f0f0f0; }

/* ===== CONTACT ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 60px; align-items: start; }
.contact-info h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 20px; color: var(--green-dark); }
.contact-detail { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 20px; }
.c-icon {
  width: 44px; height: 44px; min-width: 44px;
  background: var(--green-pale);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--green);
  font-size: 1.1rem;
}
.c-detail-text h4 { font-size: 0.88rem; font-weight: 700; margin-bottom: 2px; }
.c-detail-text p { font-size: 0.85rem; color: var(--text-light); }
.contact-form-box {
  background: var(--bg-light);
  padding: 36px;
  border-radius: 14px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--text-mid); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(46,125,50,0.12);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-success {
  display: none;
  background: var(--green-pale);
  border: 1px solid var(--green-light);
  color: var(--green-dark);
  padding: 14px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 10px;
}

/* ===== FOOTER ===== */
footer {
  background: #013378;
  color: #c8ddc8;
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-about .logo-text .brand { color: var(--white); }
.footer-about .logo-text .tagline { color: #7a9e7a; }
.footer-about p { font-size: 0.85rem; color: #8fac8f; margin: 16px 0 20px; line-height: 1.75; }
.footer-social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: 8px;
  margin-right: 8px;
  color: #c8ddc8;
  font-size: 0.9rem;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--green); color: var(--white); }
.footer-col h4 { font-size: 0.92rem; font-weight: 700; color: var(--white); margin-bottom: 18px; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px; background: var(--green); }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.84rem; color: #8fac8f; transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--white); }
.footer-col ul li a::before { content: '›'; margin-right: 6px; color: var(--green); }
.footer-contact-item { display: flex; gap: 10px; margin-bottom: 14px; align-items: flex-start; }
.footer-contact-item i { color: var(--green-light); font-size: 0.9rem; margin-top: 3px; }
.footer-contact-item span { font-size: 0.83rem; color: #8fac8f; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: #5a7a5a;
}
.footer-bottom a { color: var(--green-light); }
.footer-bottom a:hover { color: var(--white); }

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
  background: linear-gradient(135deg, var(--green-dark), var(--green));
  color: var(--white);
  padding: 60px 0 50px;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url('../images/hero-bg.svg') right center/auto 200% no-repeat;
  opacity: 0.08;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(1.6rem, 3vw, 2.6rem); font-weight: 800; margin-bottom: 10px; }
.page-hero p { opacity: 0.85; font-size: 1rem; }
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 0.82rem; margin-top: 16px; opacity: 0.8; }
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { color: rgba(255,255,255,0.4); }

/* ===== SERVICE DETAIL PAGE ===== */
.service-detail-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 48px; align-items: start; }
.service-body h2 { font-size: 1.5rem; font-weight: 700; margin: 28px 0 12px; color: var(--green-dark); }
.service-body p { font-size: 0.95rem; color: var(--text-mid); margin-bottom: 16px; line-height: 1.8; }
.service-body ul { margin: 0 0 20px 18px; }
.service-body ul li { font-size: 0.9rem; color: var(--text-mid); margin-bottom: 8px; list-style: disc; }
.service-sidebar { position: sticky; top: 90px; }
.sidebar-box { background: var(--bg-light); border-radius: var(--radius); padding: 24px; margin-bottom: 20px; border: 1px solid var(--border); }
.sidebar-box h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 14px; color: var(--green-dark); }
.sidebar-box ul li { padding: 8px 0; border-bottom: 1px solid var(--border); }
.sidebar-box ul li:last-child { border-bottom: none; }
.sidebar-box ul li a { font-size: 0.85rem; color: var(--text-mid); transition: color var(--transition); display: flex; justify-content: space-between; }
.sidebar-box ul li a:hover { color: var(--green); }
.sidebar-box ul li a.current { color: var(--green); font-weight: 700; }

/* ===== ABOUT GRID ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-img img { border-radius: 14px; box-shadow: var(--shadow-hover); }
.value-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
.value-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all var(--transition);
}
.value-card:hover { border-color: var(--green-light); box-shadow: var(--shadow); }
.value-card h4 { font-size: 0.9rem; font-weight: 700; color: var(--green-dark); margin-bottom: 6px; }
.value-card p { font-size: 0.82rem; color: var(--text-light); }

/* ===== TEAM ===== */
.team-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 24px; }
.team-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.team-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.team-photo {
  height: 200px;
  background: var(--green-pale);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.team-photo svg { width: 80px; height: 80px; color: var(--green); }
.team-info { padding: 20px; }
.team-info h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.team-info .role { font-size: 0.8rem; color: var(--green); font-weight: 600; margin-bottom: 8px; }
.team-info p { font-size: 0.82rem; color: var(--text-light); }

/* ===== BACK TO TOP ===== */
#back-to-top {
  position: fixed; bottom: 30px; right: 30px; z-index: 999;
  width: 44px; height: 44px;
  background: var(--green);
  color: var(--white);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(46,125,50,0.35);
  border: none;
}
#back-to-top.visible { opacity: 1; transform: translateY(0); }
#back-to-top:hover { background: var(--green-dark); }

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .process-steps::before { display: none; }
}
@media (max-width: 768px) {
  section { padding: 52px 0; }
  nav ul, .hamburger ~ nav { display: none; }
  nav ul.open { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--white); padding: 16px; box-shadow: var(--shadow); border-top: 1px solid var(--border); gap: 2px; z-index: 999; }
  nav ul.open .dropdown-menu { display: block; position: static; box-shadow: none; border: none; background: var(--green-pale); border-radius: 6px; padding: 6px 0; margin: 4px 0; animation: none; }
  .hamburger { display: flex; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .why-badge { bottom: 10px; right: 10px; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .service-detail-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .value-cards { grid-template-columns: 1fr; }
  .hero-content { padding: 52px 0; }
  .process-steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .industry-cards { grid-template-columns: repeat(2, 1fr); }
}