/* ================================================================
   Corvanta Features Page - Professional, Modern, Accessible
   Optimized for Performance & SEO
   ================================================================ */

/* ===== CSS VARIABLES ===== */
:root {
  --primary-blue: #2563eb;
  --dark-blue: #1e40af;
  --light-blue: #3b82f6;
  --sky-blue: #0ea5e9;
  --purple: #7c3aed;
  --green: #22c55e;
  --green-dark: #16a34a;
  --amber: #f59e0b;
  --red: #ef4444;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(37, 99, 235, 0.08);
  --shadow-lg: 0 10px 40px rgba(37, 99, 235, 0.12);
  --shadow-xl: 0 20px 60px rgba(37, 99, 235, 0.15);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Override base.css main element constraints for features page */
main#main-content {
  max-width: 100%;
  padding: 2rem 1.5rem 3rem;
}

@media (min-width: 1400px) {
  main#main-content {
    padding: 2rem 3rem 3rem;
  }
}

@media (min-width: 1920px) {
  main#main-content {
    padding: 2rem 4rem 3rem;
  }
}

/* ===== FEATURES HERO SECTION ===== */
.features-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
  color: var(--white);
  border-radius: 20px;
  margin-bottom: 3rem;
  position: relative;
  overflow: hidden;
  min-height: 480px;
}

.features-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.features-hero::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -15%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.features-hero-content {
  flex: 1 1 55%;
  z-index: 2;
  max-width: 600px;
}

.features-hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: var(--white);
  font-weight: 600;
  border-radius: 50px;
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.features-hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin: 0 0 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.features-hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  margin: 0 0 2rem;
}

.features-hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  min-width: 100px;
  transition: transform var(--transition-base), background var(--transition-base);
}

.stat-item:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.15);
}

.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

.features-hero-visual {
  flex: 1 1 40%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.hero-illustration {
  width: 100%;
  max-width: 450px;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.2));
}

/* Floating animation for hero elements */
.float-element {
  animation: float 4s ease-in-out infinite;
}

.float-element.delay-1 {
  animation-delay: 1s;
}

.float-element.delay-2 {
  animation-delay: 2s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ===== FEATURES NAVIGATION ===== */
.features-nav {
  position: sticky;
  top: 70px;
  z-index: 100;
  background: var(--white);
  padding: 1rem 0;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.features-nav-container {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.5rem;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.features-nav-container::-webkit-scrollbar {
  display: none;
}

.features-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.features-nav-btn:hover {
  background: var(--gray-200);
  color: var(--gray-900);
}

.features-nav-btn.active {
  background: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
}

.features-nav-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ===== SECTION STYLING ===== */
.features-section {
  margin-bottom: 5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--purple) 100%);
  color: var(--white);
  font-weight: 600;
  border-radius: 50px;
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--gray-900);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--white);
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-blue), var(--purple));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card.hidden {
  display: none;
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: transform var(--transition-base);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

.feature-icon.security {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  color: var(--primary-blue);
}

.feature-icon.verification {
  background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
  color: var(--green);
}

.feature-icon.documents {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  color: var(--amber);
}

.feature-icon.compliance {
  background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
  color: var(--purple);
}

.feature-icon.management {
  background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
  color: var(--sky-blue);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 0.75rem;
}

.feature-description {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin: 0 0 1.25rem;
}

.feature-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.feature-benefits li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--gray-700);
  line-height: 1.5;
}

.feature-benefits li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

.feature-tag {
  display: inline-block;
  background: var(--gray-100);
  color: var(--gray-600);
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ===== SECURITY SECTION ===== */
.security-section {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
  border-radius: 24px;
  padding: 4rem 3rem;
  margin-bottom: 5rem;
  overflow: hidden;
  position: relative;
}

.security-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.security-content {
  display: flex;
  align-items: center;
  gap: 4rem;
  position: relative;
  z-index: 1;
}

.security-text {
  flex: 1 1 60%;
}

.security-text .section-badge {
  background: rgba(59, 130, 246, 0.2);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.security-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--white);
  margin: 0 0 1rem;
}

.security-description {
  font-size: 1.1rem;
  color: var(--gray-400);
  line-height: 1.7;
  margin: 0 0 2rem;
}

.security-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.security-feature {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.security-feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--light-blue);
}

.security-feature-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin: 0 0 0.35rem;
}

.security-feature-content p {
  font-size: 0.9rem;
  color: var(--gray-400);
  margin: 0;
  line-height: 1.5;
}

.security-visual {
  flex: 1 1 35%;
  display: flex;
  justify-content: center;
}

.security-shield {
  position: relative;
  animation: float 4s ease-in-out infinite;
}

.security-shield svg {
  width: 200px;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(59, 130, 246, 0.3));
}

.shield-badge {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green);
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  white-space: nowrap;
}

/* ===== INTEGRATIONS SECTION ===== */
.integrations-section {
  margin-bottom: 5rem;
}

.integrations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.integration-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  background: var(--white);
  border-radius: 16px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition-base);
  cursor: default;
}

.integration-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
}

.integration-icon {
  width: 56px;
  height: 56px;
  background: var(--gray-100);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  transition: all var(--transition-base);
}

.integration-item:hover .integration-icon {
  background: var(--primary-blue);
  color: var(--white);
}

.integration-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-700);
  text-align: center;
}

/* ===== COMPARISON TABLE ===== */
.comparison-section {
  margin-bottom: 5rem;
}

.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-md);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  min-width: 600px;
}

.comparison-table thead {
  background: var(--gray-50);
}

.comparison-table th {
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-weight: 700;
  color: var(--gray-700);
  font-size: 0.95rem;
  border-bottom: 2px solid var(--gray-200);
}

.comparison-table th.highlight {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
  color: var(--white);
}

.comparison-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.95rem;
  color: var(--gray-700);
}

.comparison-table td.highlight {
  background: rgba(37, 99, 235, 0.05);
  font-weight: 600;
}

.comparison-table tbody tr:hover {
  background: var(--gray-50);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.check {
  color: var(--green);
  font-weight: 700;
  margin-right: 0.5rem;
}

.cross {
  color: var(--red);
  font-weight: 700;
  margin-right: 0.5rem;
}

.partial {
  color: var(--amber);
  font-weight: 700;
  margin-right: 0.5rem;
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--purple) 100%);
  border-radius: 24px;
  padding: 4rem 2rem;
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -25%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  right: -15%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  margin: 0 0 1rem;
}

.cta-description {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  margin: 0 0 2rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.cta-section .cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: 50px;
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
}

.cta-section .cta-btn.primary {
  background: var(--white);
  color: var(--primary-blue);
  border: 2px solid var(--white);
}

.cta-section .cta-btn.primary:hover {
  background: transparent;
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-section .cta-btn.secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.cta-section .cta-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
  transform: translateY(-3px);
}

.cta-note {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

.cta-note svg {
  color: var(--green);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .features-hero {
    flex-direction: column;
    text-align: center;
    padding: 3rem 1.5rem;
    min-height: auto;
  }
  
  .features-hero-content {
    max-width: 100%;
  }
  
  .features-hero-stats {
    justify-content: center;
  }
  
  .features-hero-visual {
    display: none;
  }
  
  .security-content {
    flex-direction: column;
    text-align: center;
  }
  
  .security-text {
    order: 2;
  }
  
  .security-visual {
    order: 1;
    margin-bottom: 2rem;
  }
  
  .security-features {
    text-align: left;
  }
}

@media (max-width: 768px) {
  .features-hero {
    padding: 2.5rem 1.25rem;
  }
  
  .features-hero-stats {
    gap: 1rem;
  }
  
  .stat-item {
    min-width: 80px;
    padding: 0.75rem;
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
  
  .features-nav {
    top: 60px;
    padding: 0.75rem 0;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .feature-card {
    padding: 1.5rem;
  }
  
  .security-section {
    padding: 2.5rem 1.5rem;
    border-radius: 16px;
  }
  
  .security-features {
    grid-template-columns: 1fr;
  }
  
  .integrations-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
  }
  
  .cta-section {
    padding: 3rem 1.5rem;
    border-radius: 16px;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .cta-section .cta-btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .features-hero-badge {
    font-size: 0.8rem;
    padding: 0.4rem 1rem;
  }
  
  .features-hero-title {
    font-size: 1.75rem;
  }
  
  .features-hero-subtitle {
    font-size: 1rem;
  }
  
  .features-nav-btn {
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
  }
  
  .features-nav-btn svg {
    width: 16px;
    height: 16px;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .feature-icon {
    width: 56px;
    height: 56px;
  }
  
  .feature-title {
    font-size: 1.1rem;
  }
  
  .security-shield svg {
    width: 150px;
  }
  
  .integrations-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .integration-item {
    padding: 1rem;
  }
  
  .integration-icon {
    width: 48px;
    height: 48px;
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  .feature-card,
  .stat-item,
  .integration-item,
  .cta-section .cta-btn,
  .features-nav-btn,
  .float-element {
    transition: none;
    animation: none;
  }
}

.features-nav-btn:focus-visible,
.cta-section .cta-btn:focus-visible,
.feature-card:focus-visible {
  outline: 3px solid var(--primary-blue);
  outline-offset: 2px;
}

/* ===== PRINT STYLES ===== */
@media print {
  .features-hero,
  .features-nav,
  .cta-section {
    display: none;
  }
  
  .feature-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }
}