@import url('variables.css');

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-dark);
  background-color: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-dark);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
  opacity: 1;
}

ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-sm);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  line-height: 1.5;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

/* Cards */
.card {
  background-color: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}

.card:hover::before {
  transform: scaleY(1);
}

/* Sections */
.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section[style*="background-color: var(--color-bg)"] {
  position: relative;
}

.section[style*="background-color: var(--color-bg)"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--color-primary);
  position: relative;
  padding-bottom: var(--spacing-lg);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-full);
}

.section-subtitle {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--color-dark-light);
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
  line-height: var(--line-height-relaxed);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Utilities */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mt-3 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-2xl); }

/* Skip to content link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* Header & Navigation */
.header {
  background-color: var(--color-bg-light);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height-mobile);
}

@media (min-width: 1024px) {
  .header {
    height: var(--header-height);
  }
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
}

@media (min-width: 1024px) {
  .header-container {
    padding: var(--spacing-md) var(--spacing-xl);
  }
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo:hover {
  color: var(--color-primary-dark);
}

.logo-text {
  display: none;
}

@media (min-width: 768px) {
  .logo-text {
    display: inline;
  }
}

.nav {
  display: none;
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
  }
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-list li {
  margin: 0;
  display: flex;
  align-items: center;
}

.nav-link {
  color: var(--color-dark);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-block;
  line-height: 1.5;
  white-space: nowrap;
}

.nav-link:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-bg);
}

.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: 1001;
}

@media (min-width: 1024px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--color-dark);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-nav {
  position: fixed;
  top: var(--header-height-mobile);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-bg-light);
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  z-index: 999;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: var(--spacing-xl);
}

.mobile-nav-item {
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-link {
  display: block;
  padding: var(--spacing-lg);
  color: var(--color-dark);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-bg);
  padding-left: var(--spacing-xl);
}

/* Footer */
.footer {
  background-color: var(--color-dark);
  color: var(--color-gray-lighter);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: var(--spacing-4xl);
}

.footer-content {
  display: grid;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer-section h3 {
  color: white;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-lg);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.footer-section a:hover {
  color: white;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--color-dark-light);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.service-areas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.service-area {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-dark);
  color: white;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-dark);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family-primary);
  transition: border-color var(--transition-fast);
  background-color: var(--color-bg-light);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 77, 122, 0.1);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
  border-color: #dc2626;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.error-message {
  color: #dc2626;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  display: block;
}

.form-message {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  font-weight: var(--font-weight-medium);
}

.form-message.success {
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #10b981;
}

.form-message.error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #ef4444;
}

.form-actions {
  margin-top: var(--spacing-xl);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, rgba(26, 77, 122, 0.85) 0%, rgba(15, 47, 74, 0.85) 100%),
              url('https://images.unsplash.com/photo-1581092160562-40aa08e78837?w=1920&h=1080&fit=crop&q=80') center/cover no-repeat;
  color: white;
  padding: var(--spacing-4xl) 0;
  text-align: center;
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  color: white;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2xl);
  color: rgba(255, 255, 255, 0.95);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Certifications */
.certifications {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  justify-content: center;
  align-items: center;
}

.certification-badge {
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: none;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.certification-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.certification-badge:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.certification-badge:hover::before {
  left: 100%;
}

/* Service Cards */
.service-card {
  text-align: center;
  padding: var(--spacing-xl);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  display: inline-block;
  transition: transform var(--transition-base);
}

.service-card:hover .service-icon {
  transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  transition: color var(--transition-fast);
}

.service-card:hover h3 {
  color: var(--color-secondary);
}

/* Equipment Gallery */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.equipment-item {
  background-color: var(--color-bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid transparent;
  position: relative;
}

.equipment-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  transform: scaleY(0);
  transition: transform var(--transition-base);
  z-index: 1;
}

.equipment-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}

.equipment-item:hover::before {
  transform: scaleY(1);
}

.equipment-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: var(--color-bg);
  display: block;
  transition: transform var(--transition-base);
}

.equipment-item:hover .equipment-image {
  transform: scale(1.05);
}

.equipment-content {
  padding: var(--spacing-lg);
  position: relative;
  z-index: 0;
}

.equipment-content h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-fast);
}

.equipment-item:hover .equipment-content h3 {
  color: var(--color-secondary);
}

.equipment-specs {
  list-style: none;
  margin: var(--spacing-md) 0 0 0;
  padding: 0;
}

.equipment-specs li {
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  transition: padding-left var(--transition-fast);
}

.equipment-item:hover .equipment-specs li {
  padding-left: var(--spacing-sm);
}

.equipment-specs li:last-child {
  border-bottom: none;
}