/* ============================================================
   Sand Rock - Computer Systems Design & Integration
   Professional Website Stylesheet
   ============================================================ */

/* ---------- CSS Variables / Design Tokens ---------- */
:root {
  --color-primary: #0c1b33;
  --color-primary-light: #152c52;
  --color-secondary: #0a5b8c;
  --color-accent: #00838f;
  --color-accent-light: #00acc1;
  --color-highlight: #26a69a;
  --color-white: #ffffff;
  --color-off-white: #f5f7fa;
  --color-light-gray: #e8ecf1;
  --color-medium-gray: #90a4ae;
  --color-dark-gray: #37474f;
  --color-text: #1c2331;
  --color-text-light: #546e7a;
  --color-footer: #080e1a;
  --color-footer-text: #b0bec5;
  --color-border: #cfd8dc;
  --color-success: #2e7d32;
  --color-warning: #f57c00;
  --color-danger: #c62828;

  --font-heading: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.15);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --max-width: 1200px;
  --header-height: 72px;
}

/* ---------- CSS Reset ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.7;
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.3;
  color: var(--color-primary);
}

/* ---------- Utility Classes ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.3s ease;
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}
.btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.btn-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

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

/* ---------- Header / Navigation ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.5px;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-highlight));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 800;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color 0.3s ease;
  position: relative;
}
.nav-links a:hover,
.nav-links a:focus {
  color: var(--color-accent);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width 0.3s ease;
}
.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ---------- Hero Section ---------- */
.hero {
  padding-top: var(--header-height);
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 40%, var(--color-secondary) 70%, var(--color-accent) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.04) 0%, transparent 70%);
  transform: rotate(-15deg);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background: linear-gradient(to top, rgba(12,27,51,0.6), transparent);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 720px;
  padding: 80px 0;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1px;
}
.hero h1 span {
  color: var(--color-accent-light);
}

.hero-description {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 640px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 56px;
}
.hero-stat h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 4px;
}
.hero-stat p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  font-weight: 500;
}

.hero-visual {
  display: none;
}

@media (min-width: 1024px) {
  .hero-visual {
    display: block;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 45%;
    max-width: 600px;
    opacity: 0.15;
    pointer-events: none;
  }
  .hero-visual svg {
    width: 100%;
    height: auto;
  }
}

/* ---------- Section Common ---------- */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  padding: 6px 16px;
  background-color: rgba(0,131,143,0.08);
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

.section-alt {
  background-color: var(--color-off-white);
}

/* ---------- Services Grid ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-highlight));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, rgba(0,131,143,0.1), rgba(38,166,154,0.1));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.5rem;
  color: var(--color-accent);
}

.service-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.service-features li {
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  padding-left: 20px;
  position: relative;
}
.service-features li::before {
  content: '~';
  position: absolute;
  left: 0;
  color: var(--color-highlight);
  font-weight: 700;
}

/* ---------- About Section ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image-placeholder {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-lg);
  padding: 60px;
  text-align: center;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.about-image-placeholder .decorative-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

.about-image-placeholder .about-badge {
  font-size: 4rem;
  font-weight: 900;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.about-image-placeholder .about-name {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  position: relative;
  z-index: 1;
}
.about-image-placeholder .about-tagline {
  font-size: 0.95rem;
  opacity: 0.8;
  margin-top: 8px;
  position: relative;
  z-index: 1;
}

.about-content h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.about-content .lead {
  font-size: 1.15rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 20px;
  line-height: 1.6;
}

.about-content p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-stats-row {
  display: flex;
  gap: 40px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-light-gray);
}

.about-stat-item h4 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-accent);
}
.about-stat-item p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin: 0;
}

/* ---------- Process Section ---------- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.process-step {
  text-align: center;
  padding: 40px 20px;
  position: relative;
}

.process-step-number {
  width: 56px;
  height: 56px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 auto 20px;
}

.process-step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.process-step p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ---------- Technology Stack ---------- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
}

.tech-item {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  padding: 28px 16px;
  text-align: center;
  transition: all 0.3s ease;
}
.tech-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.tech-item .tech-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}
.tech-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.tech-item p {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ---------- Industries Section ---------- */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.industry-card {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all 0.3s ease;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.industry-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.industry-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: rgba(0,131,143,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.industry-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.industry-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ---------- Case Studies ---------- */
.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}

.case-study-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border: 1px solid var(--color-light-gray);
}
.case-study-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.case-study-preview {
  height: 200px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.case-study-preview .preview-badge {
  color: var(--color-white);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 2px;
  position: relative;
  z-index: 1;
}
.case-study-preview::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(45deg, rgba(255,255,255,0.03) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255,255,255,0.03) 25%, transparent 25%);
  background-size: 20px 20px;
}

.case-study-body {
  padding: 28px;
}

.case-study-body .tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0,131,143,0.08);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 50px;
  margin-bottom: 12px;
}

.case-study-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.case-study-body p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-study-metrics {
  display: flex;
  gap: 24px;
}
.case-study-metric strong {
  display: block;
  font-size: 1.3rem;
  color: var(--color-highlight);
  font-weight: 800;
}
.case-study-metric span {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ---------- Testimonials ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}

.testimonial-card {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  transition: all 0.3s ease;
}
.testimonial-card:hover {
  box-shadow: var(--shadow-md);
}

.testimonial-card .quote-mark {
  font-size: 4rem;
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.15;
  position: absolute;
  top: 16px;
  left: 24px;
  font-family: Georgia, serif;
}

.testimonial-text {
  font-size: 1rem;
  color: var(--color-dark-gray);
  line-height: 1.8;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-highlight));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
}

.testimonial-author h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
}
.testimonial-author p {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item:hover {
  border-color: var(--color-accent);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 24px 28px;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-body);
}
.faq-question .faq-toggle {
  font-size: 1.4rem;
  color: var(--color-accent);
  transition: transform 0.3s ease;
  min-width: 24px;
  text-align: center;
}

.faq-answer {
  padding: 0 28px 24px;
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0,188,212,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.cta-section h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
  position: relative;
}

.cta-section p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 36px;
  position: relative;
}

.cta-section .btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

/* ---------- Contact Section ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.contact-info > p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-detail-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(0,131,143,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.contact-detail-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 2px;
}
.contact-detail-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.contact-form {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-off-white);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,131,143,0.12);
}

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

/* ---------- Footer ---------- */
.site-footer {
  background-color: var(--color-footer);
  color: var(--color-footer-text);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-footer-text);
}

.footer-links h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 0.9rem;
  color: var(--color-footer-text);
  transition: color 0.3s ease;
}
.footer-links a:hover {
  color: var(--color-accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}
.footer-bottom a {
  color: var(--color-footer-text);
  transition: color 0.3s ease;
}
.footer-bottom a:hover {
  color: var(--color-accent-light);
}
.footer-bottom-links {
  display: flex;
  gap: 24px;
}

/* ---------- Policy Pages Common ---------- */
.policy-page {
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 80px;
}

.policy-hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  padding: 80px 0;
  text-align: center;
}

.policy-hero h1 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 12px;
}
.policy-hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
}

.policy-content {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 0;
}

.policy-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-light-gray);
}
.policy-content h2:first-child {
  margin-top: 0;
}

.policy-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 28px;
  margin-bottom: 12px;
}

.policy-content p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.policy-content ul,
.policy-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}
.policy-content ul {
  list-style: disc;
}
.policy-content ol {
  list-style: decimal;
}
.policy-content li {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 8px;
}

.policy-content strong {
  color: var(--color-primary);
  font-weight: 700;
}

.policy-content a {
  color: var(--color-accent);
  text-decoration: underline;
}
.policy-content a:hover {
  color: var(--color-accent-light);
}

.policy-content address {
  font-style: normal;
  color: var(--color-text-light);
  line-height: 1.8;
}

.policy-content .info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}
.policy-content .info-table td,
.policy-content .info-table th {
  padding: 12px 16px;
  border: 1px solid var(--color-light-gray);
  font-size: 0.95rem;
  text-align: left;
}
.policy-content .info-table th {
  background: var(--color-off-white);
  color: var(--color-primary);
  font-weight: 700;
  width: 30%;
}
.policy-content .info-table td {
  color: var(--color-text-light);
}

.last-updated {
  font-size: 0.85rem;
  color: var(--color-medium-gray);
  margin-bottom: 32px;
  font-style: italic;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.8rem;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--color-white);
    flex-direction: column;
    padding: 24px;
    box-shadow: var(--shadow-md);
    gap: 16px;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-toggle {
    display: flex;
  }

  .hero h1 {
    font-size: 2.2rem;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }
  .section-header h2 {
    font-size: 1.8rem;
  }
  .services-grid,
  .industries-grid,
  .case-studies-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .contact-form {
    padding: 24px;
  }
  .policy-hero h1 {
    font-size: 2rem;
  }
  .about-stats-row {
    flex-wrap: wrap;
    gap: 24px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }
  .hero-buttons {
    flex-direction: column;
  }
  .hero-buttons .btn {
    width: 100%;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}