/* Color Theme Variables */
:root {
  --primary-color: #1a2b4c;       /* Deep Navy Blue */
  --primary-hover: #121e36;       
  --accent-color: #007aff;        /* Clean Vibrant Blue */
  --accent-hover: #005bb5;        
  --light-bg: #f4f6fa;            
  --white: #ffffff;
  --text-dark: #222222;
  --text-muted: #666666;
  --border-color: #e2e8f0;
}

/* Universal Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
  scroll-behavior: smooth;
}

body {
  color: var(--text-dark);
  background-color: var(--light-bg);
  line-height: 1.6;
}

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

.section {
  padding: 70px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 32px;
  color: var(--primary-color);
  font-weight: 700;
}

.title-underline {
  width: 60px;
  height: 4px;
  background-color: var(--accent-color);
  margin: 10px auto 0;
  border-radius: 2px;
}

/* Header */
.header {
  background-color: var(--white);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  flex-direction: column;
  font-weight: 800;
  color: var(--primary-color);
}

.logo-text {
  font-size: 20px;
  line-height: 1;
}

.logo-subtext {
  font-size: 10px;
  color: var(--accent-color);
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 22px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 600;
  font-size: 14px;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent-color);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
  text-align: center;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-accent {
  background-color: var(--accent-color);
  color: var(--white);
}

.btn-accent:hover {
  background-color: var(--accent-hover);
}

.btn-outline {
  border: 2px solid var(--white);
  color: var(--white);
  background: transparent;
}

.btn-outline:hover {
  background-color: var(--white);
  color: var(--primary-color);
}

.badge-gas-safe {
  background-color: #fff3c4;
  color: #856404;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Hero Section */
.hero {
  position: relative;
  background: url('images/hero-bg.jpg') no-repeat center center/cover;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(26, 43, 76, 0.82);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-content h1 {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 15px;
}

.hero-content p {
  font-size: 18px;
  margin-bottom: 30px;
  color: #e2e8f0;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
}

/* About Us Section (With Image Gallery Grid) */
.about-section {
  background-color: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-text h3 {
  font-size: 24px;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 15px;
}

.about-highlights {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.highlight-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.highlight-item i {
  color: var(--accent-color);
  font-size: 20px;
  margin-top: 3px;
}

.highlight-item h4 {
  font-size: 16px;
  color: var(--primary-color);
}

.highlight-item p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Image Showcase Grid */
.about-gallery {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.gallery-img {
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.gallery-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.gallery-img:hover img {
  transform: scale(1.03);
}

.main-img {
  height: 240px;
}

.gallery-sub {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  height: 140px;
}

/* Color Variables */
:root {
  --light-bg: #ffffff;
  --light-border: #e2e8f0;
  --text-dark: #1a2b4c;
  --text-muted: #64748b;
  --accent-blue: #007aff;
  --accent-hover: #005bb5;
  --text-white: #ffffff;
}

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

/* Light Theme Contact Section */
.contact-header-short {
  background-color: var(--light-bg);
  padding: 45px 0;
  text-align: center;
  border-bottom: 1px solid var(--light-border);
}

.contact-short-wrapper h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.contact-short-wrapper p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 22px;
}

/* Button Styling */
.btn-phone-short {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--accent-blue);
  color: var(--text-white);
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-phone-short:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 122, 255, 0.3);
}

/* Responsive Rules */
@media (max-width: 576px) {
  .contact-header-short {
    padding: 35px 0;
  }

  .contact-short-wrapper h2 {
    font-size: 22px;
  }

  .contact-short-wrapper p {
    font-size: 14px;
  }

  .btn-phone-short {
    width: 100%;
    justify-content: center;
  }
}

/* Services Section */
/* Container & Section Base */
.services-section {
  background: #0f172a; /* Premium Dark Theme Background */
  padding: 90px 0;
  color: #ffffff;
}

.services-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 55px auto;
}

.section-badge {
  display: inline-block;
  background: rgba(0, 122, 255, 0.15);
  color: #38bdf8;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid rgba(56, 189, 248, 0.3);
  margin-bottom: 15px;
}

.services-header h2 {
  font-size: 36px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.services-header p {
  color: #94a3b8;
  font-size: 16px;
  line-height: 1.6;
}

/* 3-Column Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* Modern Card Design */
.service-card {
  background: #1e293b;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 20px 40px -15px rgba(0, 122, 255, 0.25);
}

/* Card Header (Icon + Number) */
.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.icon-wrapper {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #007aff, #0284c7);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 22px;
  box-shadow: 0 8px 16px rgba(0, 122, 255, 0.3);
}

.card-number {
  font-size: 20px;
  font-weight: 800;
  color: #334155;
  transition: color 0.3s ease;
}

.service-card:hover .card-number {
  color: #38bdf8;
}

/* Service Title */
.service-title {
  font-size: 20px;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 18px;
  min-height: 48px;
  display: flex;
  align-items: center;
}

/* Service Bullet Points */
.service-list {
  list-style: none;
  padding: 0;
  margin: 0;
  flex-grow: 1;
}

.service-list li {
  font-size: 14px;
  color: #cbd5e1;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.service-list li:last-child {
  margin-bottom: 0;
}

.service-list li i {
  color: #38bdf8;
  font-size: 12px;
  transition: transform 0.2s ease;
}

.service-card:hover .service-list li i {
  transform: translateX(3px);
}

/* Bottom Glow Accent Line */
.card-accent-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, #007aff, #38bdf8);
  transition: width 0.3s ease;
}

.service-card:hover .card-accent-line {
  width: 100%;
}

/* --- Responsive Layout --- */
@media (max-width: 992px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .services-header h2 {
    font-size: 30px;
  }
}

@media (max-width: 600px) {
  .services-section {
    padding: 60px 0;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .service-title {
    min-height: auto;
  }
}

/* Process Section */
.process-section {
  background-color: var(--primary-color);
  color: var(--white);
}

.process-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
  align-items: center;
}

.process-left .sub-heading {
  color: var(--accent-color);
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.process-left h2 {
  font-size: 34px;
  margin: 10px 0 15px;
  line-height: 1.2;
}

.process-left p {
  color: #cbd5e1;
  font-size: 15px;
  margin-bottom: 25px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.step-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 25px 18px;
  border-radius: 8px;
}

.step-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--accent-color);
  display: block;
  margin-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  padding-bottom: 5px;
}

.step-card h4 {
  font-size: 16px;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 13px;
  color: #cbd5e1;
}

/* Accordion FAQs Section */
.faqs-section {
  background-color: var(--white);
}

.accordion-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.accordion-item {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--light-bg);
}

.accordion-header {
  width: 100%;
  padding: 18px 20px;
  background: none;
  border: none;
  outline: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-color);
  cursor: pointer;
  text-align: left;
  transition: background-color 0.2s;
}

.accordion-header i.fa-circle-question {
  color: var(--accent-color);
  margin-right: 8px;
}

.accordion-header:hover {
  background-color: #e2e8f0;
}

.accordion-icon {
  font-size: 14px;
  transition: transform 0.3s ease;
  color: var(--accent-color);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background-color: var(--white);
}

.accordion-content p {
  padding: 18px 20px;
  font-size: 14px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
}

/* Footer Section */
.footer {
  background-color: #111a2e;
  color: #94a3b8;
  padding-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.logo-footer .logo-text {
  color: var(--white);
}

.footer-desc {
  font-size: 14px;
  margin-top: 15px;
  line-height: 1.6;
}

.footer-col h4 {
  color: var(--white);
  font-size: 18px;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--accent-color);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 15px;
}

.footer-contact-item i {
  color: var(--accent-color);
  font-size: 18px;
  margin-top: 3px;
}

.footer-contact-item span {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  color: #64748b;
  font-weight: 700;
}

.footer-contact-item a,
.footer-contact-item p {
  color: var(--white);
  font-size: 14px;
  text-decoration: none;
}

.footer-bottom {
  padding: 20px 0;
  font-size: 13px;
  background-color: #0b111e;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .about-grid,
  .process-wrapper {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 15px;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
@media (max-width: 768px) {
  .badge-gas-safe {
    display: none;
  }
}

  .hero-content h1 {
    font-size: 30px;
  }

  .footer-bottom-content {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}