/* ============================================
   DigiVert Technologies — Main Stylesheet
   Brand: Navy + Orange/Gold Accents
   Font: Inter (per brand guidelines)
   ============================================ */

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

/* --- CSS Variables --- */
:root {
  --navy-dark: #00005a;
  --navy-mid: #000072;
  --navy-light: #01008c;
  --accent-gold: #fdc30b;
  --accent-orange: #ff8000;
  --accent-amber: #ffd700;
  --white: #ffffff;
  --off-white: #f8f9fc;
  --light-gray: #e8eaf0;
  --mid-gray: #6b7280;
  --dark-gray: #374151;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1140px;
  --section-padding: 80px 0;
  --transition: 0.3s ease;
}

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

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

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--navy-mid);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-orange);
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy-dark);
}

h1 { font-size: 2rem; margin-bottom: 1rem; }
h2 { font-size: 1.625rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.375rem; margin-bottom: 0.5rem; }
h4 { font-size: 1.125rem; margin-bottom: 0.5rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

ul { list-style: none; }

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

/* --- Header / Navigation --- */
.site-header {
  background: var(--navy-dark);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0, 0, 90, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  height: 72px;
}

.logo img {
  height: 48px;
  width: auto;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  transition: all var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: 6px;
  vertical-align: middle;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  border-radius: 8px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  min-width: 280px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
  z-index: 100;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  color: var(--text-primary);
  padding: 10px 20px;
  font-size: 0.875rem;
  border-radius: 0;
}

.dropdown-menu a:hover {
  background: var(--off-white);
  color: var(--navy-mid);
}

.dropdown-menu a:focus-visible {
  background: var(--off-white);
  color: var(--navy-mid);
  outline: 2px solid var(--navy-mid);
  outline-offset: -2px;
}

.main-nav a:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  margin: 6px 0;
  transition: all var(--transition);
}

/* --- Hero Sections --- */
.hero {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-mid) 50%, var(--navy-light) 100%);
  color: var(--white);
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(253, 195, 11, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  color: var(--white);
  font-size: 2.5rem;
  font-weight: 800;
  max-width: 700px;
  margin-bottom: 0.5rem;
}

.hero .subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--accent-gold);
  margin-bottom: 1rem;
}

.hero p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 2rem;
}

/* Home hero is larger */
.hero-home h1 {
  font-size: 2.75rem;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--accent-gold);
  color: var(--navy-dark);
}

.btn-primary:hover {
  background: var(--accent-amber);
  color: var(--navy-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(253, 195, 11, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  border-color: var(--white);
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

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

.btn-secondary:hover {
  background: var(--navy-mid);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 90, 0.2);
}

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

/* --- Content Sections --- */
.section {
  padding: var(--section-padding);
}

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

.section-dark {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy-mid));
  color: var(--white);
}

.section-dark h2 {
  color: var(--white);
}

.section-dark p {
  color: rgba(255, 255, 255, 0.8);
}

.overline {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-orange);
  margin-bottom: 12px;
}

.section-dark .overline {
  color: var(--accent-gold);
}

.section-intro {
  max-width: 680px;
  margin-bottom: 2.5rem;
}

/* --- Two Column Layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.two-col-content {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}

/* --- Callout Box --- */
.callout {
  background: linear-gradient(135deg, rgba(0, 0, 90, 0.04), rgba(1, 0, 140, 0.06));
  border-left: 4px solid var(--navy-mid);
  padding: 20px 24px;
  border-radius: 0 8px 8px 0;
  margin-top: 1.5rem;
}

.callout p {
  color: var(--navy-dark);
  font-weight: 500;
  margin: 0;
  font-size: 0.95rem;
}

/* --- Icon Checklist --- */
.icon-checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.icon-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.icon-checklist li::before {
  content: '';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  background: var(--accent-gold);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z'/%3E%3C/svg%3E") center/contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='currentColor'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* --- Three Step Process --- */
.three-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  position: relative;
  padding: 32px 24px 24px;
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
  transition: all var(--transition);
}

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

.step:hover {
  border-color: var(--navy-mid);
  box-shadow: 0 8px 24px rgba(0, 0, 90, 0.08);
  transform: translateY(-4px);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--navy-dark);
  color: var(--accent-gold);
  font-weight: 800;
  font-size: 0.875rem;
  border-radius: 50%;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.step p {
  font-size: 0.925rem;
  margin: 0;
}

/* --- Outcome List --- */
.outcome-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 1.5rem;
}

.outcome-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.975rem;
  color: var(--text-secondary);
}

.outcome-list li::before {
  content: '';
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  background: var(--accent-orange);
  border-radius: 50%;
}

/* --- Engagement List --- */
.engagement-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 720px;
}

.engagement-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.975rem;
  color: var(--text-secondary);
  padding: 12px 16px;
  background: var(--white);
  border-radius: 8px;
  border: 1px solid var(--light-gray);
}

.section-alt .engagement-list li {
  background: var(--white);
}

.engagement-list li::before {
  content: '→';
  flex-shrink: 0;
  color: var(--accent-orange);
  font-weight: 700;
}

/* --- Service Cards (Homepage) --- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  padding: 32px 28px;
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
  transition: all var(--transition);
  text-align: center;
}

.service-card:hover {
  border-color: var(--navy-mid);
  box-shadow: 0 8px 32px rgba(0, 0, 90, 0.08);
  transform: translateY(-4px);
}

.service-card .card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy-dark), var(--navy-mid));
  border-radius: 12px;
  color: var(--accent-gold);
}

.service-card .card-icon svg {
  width: 28px;
  height: 28px;
}

.service-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.service-card p {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.service-card .card-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy-mid);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.service-grid-4 {
  grid-template-columns: repeat(2, 1fr);
}

.service-card .card-link::after {
  content: '→';
  transition: transform var(--transition);
}

.service-card:hover .card-link::after {
  transform: translateX(4px);
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy-mid));
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--white);
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin: 0 auto 2rem;
  font-size: 1.05rem;
}

/* --- Credibility Section (Homepage) --- */
.credibility {
  padding: 60px 0;
  background: var(--off-white);
  border-top: 1px solid var(--light-gray);
  border-bottom: 1px solid var(--light-gray);
}

.credibility-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.credibility h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.credibility p {
  font-size: 1.05rem;
  line-height: 1.7;
}

/* --- Contact Form --- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-main);
  font-size: 0.95rem;
  padding: 12px 16px;
  border: 1px solid var(--light-gray);
  border-radius: 8px;
  background: var(--white);
  color: var(--text-primary);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--navy-mid);
  box-shadow: 0 0 0 3px rgba(0, 0, 114, 0.1);
}

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

/* --- Values Grid (About) --- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  padding: 28px 24px;
  border-radius: 12px;
  border: 1px solid var(--light-gray);
  background: var(--white);
}

.value-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  color: var(--navy-dark);
}

.value-card p {
  font-size: 0.9rem;
  margin: 0;
}

/* --- Blog Cards --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.blog-card {
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--light-gray);
  overflow: hidden;
  transition: all var(--transition);
}

.blog-card:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 90, 0.08);
  transform: translateY(-4px);
}

.blog-card-body {
  padding: 24px;
}

.blog-card .blog-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-orange);
  margin-bottom: 8px;
}

.blog-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.blog-card h3 a {
  color: var(--navy-dark);
}

.blog-card h3 a:hover {
  color: var(--navy-mid);
}

.blog-card p {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.blog-card .read-more {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--navy-mid);
}

/* --- Footer --- */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand img {
  height: 40px;
  margin-bottom: 16px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  line-height: 1.6;
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  padding: 4px 0;
}

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

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

/* --- Bold Closer --- */
.bold-closer {
  font-weight: 700;
  color: var(--navy-dark);
  font-size: 1.05rem;
  margin-top: 0.5rem;
}

.section-dark .bold-closer {
  color: var(--accent-gold);
}

/* --- Differentiator Section --- */
.differentiator {
  max-width: 680px;
}

/* --- Page-level utility --- */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 2rem; }

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .service-grid,
  .three-steps,
  .values-grid,
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .two-col,
  .two-col-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 56px 0;
  }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.375rem; }

  .hero { padding: 72px 0 56px; }
  .hero h1 { font-size: 2rem; }
  .hero-home h1 { font-size: 2.25rem; }
  .hero .subtitle { font-size: 1.1rem; }

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--navy-dark);
    padding: 16px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  .main-nav a {
    display: block;
    padding: 12px 14px;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin-top: 4px;
    padding: 4px 0;
  }

  .dropdown-menu a {
    color: rgba(255, 255, 255, 0.7);
    padding: 10px 28px;
  }

  .dropdown-menu a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
  }

  .menu-toggle {
    display: block;
  }

  .service-grid,
  .service-grid-4,
  .three-steps,
  .values-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    text-align: center;
  }

  .cta-section h2 {
    font-size: 1.5rem;
  }
}