:root {
  --prussian-blue: #003153;
  --prussian-blue-light: #0060a4;
  --prussian-blue-dark: #001f3f;
  --grey-light: #f5f7fa;
  --grey-medium: #e1e8ed;
  --grey-dark: #657786;
  --white: #ffffff;
  --shadow-sm: 0 4px 10px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 18px 40px rgba(15, 23, 42, 0.18);
  --transition-fast: 0.18s ease-out;
}

/* Base */
body {
  font-family: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--grey-light);
  color: #1f2933;
  line-height: 1.6;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Layout */
.main-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  padding: 2rem 0 3rem;
}

/* Top category nav */
.solutions-nav {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  padding: 0.75rem 0;
  position: relative;
  top: 70px;
  z-index: 0;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.12);
  margin-bottom: 3.5rem;
}

.solutions-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.solutions-menu::-webkit-scrollbar {
  display: none;
}

.solutions-item {
  color: var(--prussian-blue-dark);
  padding: 0.5rem 1.5rem;
  cursor: pointer;
  white-space: nowrap;
  font-weight: 500;
  font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), background-color var(--transition-fast),
              border-color var(--transition-fast), transform var(--transition-fast);
  user-select: none;
}

.solutions-item:hover {
  color: var(--prussian-blue);
  background-color: rgba(0, 49, 83, 0.05);
}

.solutions-item.active {
  color: var(--prussian-blue);
  font-weight: 600;
  border-bottom-color: var(--prussian-blue);
  background-color: rgba(0, 49, 83, 0.06);
}

/* Sidebar */
.sidebar {
  background: var(--white);
  border-radius: 12px;
  padding: 1.6rem 1.6rem 1.3rem;
  height: fit-content;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--grey-medium);
}

.filter-section {
  margin-bottom: 1.6rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--grey-medium);
}

.filter-section:last-child {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 1.2rem;
}

.filter-title {
  display: flex;
  align-items: center;
  font-size: 0.95rem;
  margin-bottom: 0.9rem;
  color: var(--prussian-blue);
  font-weight: 600;
}

.filter-icon {
  width: 18px;
  height: 18px;
  margin-right: 0.5rem;
  color: var(--prussian-blue);
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.filter-option {
  display: flex;
  align-items: center;
  position: relative;
  padding-left: 30px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--grey-dark);
  transition: color var(--transition-fast);
}

.filter-option:hover {
  color: var(--prussian-blue);
}

.filter-option input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

/* Custom checkbox */
.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 20px;
  width: 20px;
  background-color: var(--grey-light);
  border: 1px solid var(--grey-medium);
  border-radius: 4px;
  transition: border-color var(--transition-fast), background-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

.filter-option:hover input ~ .checkmark {
  border-color: var(--prussian-blue);
}

.filter-option input:checked ~ .checkmark {
  background-color: var(--prussian-blue);
  border-color: var(--prussian-blue);
  box-shadow: 0 0 0 1px rgba(0, 49, 83, 0.12);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.filter-option input:checked ~ .checkmark:after {
  display: block;
}

.filter-option .checkmark:after {
  left: 7px;
  top: 3px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* Sidebar buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast),
              border-color var(--transition-fast);
  font-family: inherit;
  font-size: 0.9rem;
  border: none;
}

.btn-primary {
  background: #0d6efd;
  color: #ffffff;
  width: 100%;
  margin-bottom: 0.75rem;
}

.btn-primary:hover {
  background: #0a52bd;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  width: 100%;
  background: transparent;
  border: 1px solid var(--grey-medium);
  color: var(--prussian-blue);
}

.btn-outline:hover {
  background: var(--grey-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Main content */
.main-content {
  background: var(--white);
  border-radius: 16px;
  padding: 2.1rem 2.1rem 2.6rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--grey-medium);
}

/* Header inside main */
.solutions-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 1.9rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--grey-medium);
  gap: 1.8rem;
}

.solutions-title {
  font-size: 1.8rem;
  color: var(--prussian-blue);
  margin: 0 0 0.4rem;
}

.solutions-subtitle {
  color: var(--grey-dark);
  font-size: 0.95rem;
  max-width: 540px;
  margin: 0;
  line-height: 1.7;
}

/* Sort dropdown */
.sort-options {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.sort-options label {
  font-size: 0.85rem;
  color: var(--grey-dark);
}

.sort-select {
  padding: 0.45rem 2rem 0.45rem 0.85rem;
  border: 1px solid var(--grey-medium);
  border-radius: 999px;
  background-color: var(--white);
  font-size: 0.85rem;
  color: var(--grey-dark);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23657786' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8em center;
  background-size: 1em;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.sort-select:hover {
  border-color: var(--prussian-blue);
}

.sort-select:focus {
  outline: none;
  border-color: var(--prussian-blue);
  box-shadow: 0 0 0 2px rgba(0, 49, 83, 0.12);
}

/* Solutions grid & cards */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.6rem;
  margin-bottom: 2.6rem;
}

.solution-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--grey-medium);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
              border-color var(--transition-fast);
}

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

.solution-content {
  padding: 1.3rem 1.5rem 1.4rem;
}

.solution-category {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--prussian-blue);
  background: rgba(0, 49, 83, 0.06);
  padding: 0.18rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 0.7rem;
}

/* Icon */
.solution-icon {
  margin-bottom: 0.8rem;
}

.solution-icon svg {
  width: 34px;
  height: 34px;
  stroke: var(--prussian-blue);
  stroke-width: 1.6;
  fill: none;
}

/* Card text */
.solution-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--prussian-blue);
  margin: 0 0 0.6rem;
  line-height: 1.4;
}

.solution-description {
  font-size: 0.9rem;
  color: var(--grey-dark);
  margin-bottom: 1rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.solution-features {
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.solution-features li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--grey-dark);
}

.solution-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4rem;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background-color: var(--prussian-blue);
}

/* Card footer */
.solution-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.75rem;
  border-top: 1px solid var(--grey-medium);
}

.solution-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--prussian-blue);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.solution-link:hover {
  color: var(--prussian-blue-dark);
  transform: translateX(1px);
}

/* CTA */
.solutions-cta {
  text-align: center;
  background: var(--white);
  padding: 2.4rem 2rem;
  border-radius: 14px;
  margin: 2.4rem 0 0;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--grey-medium);
}

.solutions-cta h2 {
  color: var(--prussian-blue);
  margin-bottom: 0.9rem;
  font-size: 1.55rem;
}

.solutions-cta p {
  color: var(--grey-dark);
  max-width: 540px;
  margin: 0 auto 1.25rem;
  font-size: 0.98rem;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--grey-medium);
}

.page-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: var(--white);
  border: 1px solid var(--grey-medium);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--prussian-blue);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast),
              color var(--transition-fast);
}

.page-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.page-btn:hover:not(:disabled) {
  background: var(--grey-light);
  border-color: var(--prussian-blue);
}

.page-numbers {
  display: flex;
  gap: 0.4rem;
}

.page-number,
.page-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--grey-dark);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.page-number:hover {
  background: var(--grey-light);
  color: var(--prussian-blue);
}

.page-number.active {
  background: var(--prussian-blue);
  color: #ffffff;
  font-weight: 500;
}

.page-dots {
  cursor: default;
}

/* Responsive */
@media (max-width: 1024px) {
  .main-container {
    grid-template-columns: 1fr;
    gap: 1.6rem;
  }

  .sidebar {
    position: sticky;
    top: 80px;
    z-index: 10;
  }

  .solutions-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .solutions-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .solutions-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .sort-options {
    width: 100%;
    justify-content: flex-start;
  }

  .solutions-cta {
    padding: 2rem 1.25rem;
    margin-top: 2rem;
  }
}

@media (max-width: 480px) {
  .pagination {
    flex-direction: column;
    gap: 1rem;
  }

  .page-numbers {
    order: -1;
  }
}