.usecase-nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.usecase-submenu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-dark);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
}

.usecase-submenu {
  position: absolute;
  top: 100%;
  left: 0;
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  min-width: 280px;
  margin-top: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.usecase-nav-item:hover .usecase-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.usecase-submenu a {
  display: block;
  padding: 0.75rem 1.25rem;
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  border-left: 3px solid transparent;
}

.usecase-submenu a:hover {
  background: var(--bg-light);
  color: var(--primary);
  border-left-color: var(--accent);
}

.usecase-hero {
  background: linear-gradient(135deg, rgba(88, 62, 148, 0.96), rgba(7, 37, 70, 0.94)), url('../img/services/app-development.jpg') center/cover;
  color: white;
  padding: 5rem 0;
}

.usecase-hero .container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr);
  gap: 3rem;
  align-items: center;
}

.usecase-hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.usecase-hero p {
  max-width: 840px;
  font-size: 1.1rem;
  line-height: 1.8;
  opacity: 0.95;
}

.usecase-eyebrow {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.hero-visual {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  padding: 1rem;
}

.hero-visual svg {
  width: 100%;
  height: auto;
  display: block;
}

.usecase-section {
  padding: 4rem 0;
}

.usecase-section.light {
  background: var(--bg-light);
}

.usecase-section h2 {
  font-family: 'Space Grotesk', sans-serif;
}

.usecase-lead {
  color: var(--text-gray);
  font-size: 1.05rem;
  line-height: 1.85;
  max-width: 860px;
  margin: 0 auto;
}

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.usecase-panel {
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  padding: 1.5rem;
}

.usecase-panel.accent {
  border-left: 5px solid var(--accent);
}

.usecase-panel h2,
.usecase-panel h3 {
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.usecase-panel p,
.usecase-panel li {
  color: var(--text-gray);
  line-height: 1.75;
}

.usecase-panel ul {
  padding-left: 1.2rem;
}

.flow-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  margin-top: 2rem;
}

.flow-step {
  background: white;
  border: 2px solid #e2e8f0;
  border-left: 5px solid var(--accent);
  border-radius: 8px;
  padding: 1.25rem;
}

.flow-step strong {
  display: block;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.flow-step span {
  color: var(--text-gray);
  line-height: 1.6;
}

.flow-arrow {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.5rem;
}

.outcome-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.outcome-item {
  background: white;
  border: 1px solid #e2e8f0;
  border-top: 4px solid var(--accent);
  border-radius: 8px;
  padding: 1rem;
  color: var(--text-gray);
  line-height: 1.6;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.metric-card {
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  padding: 1.25rem;
  text-align: center;
}

.metric-card strong {
  display: block;
  color: var(--primary);
  font-size: 1.55rem;
  margin-bottom: 0.35rem;
}

.metric-card span {
  color: var(--text-gray);
  font-size: 0.9rem;
  line-height: 1.5;
}

.pattern-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.usecase-journey {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.journey-step {
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  padding: 1.25rem;
  position: relative;
}

.journey-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: var(--primary);
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.journey-step h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.journey-step p {
  color: var(--text-gray);
  font-size: 0.9rem;
  line-height: 1.65;
}

.related-usecases {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.related-usecase {
  background: white;
  border: 2px solid #e2e8f0;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 1rem;
  text-decoration: none;
  color: var(--primary);
  font-weight: 700;
  line-height: 1.4;
  transition: all 0.3s ease;
}

.related-usecase:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 212, 92, 0.14);
}

.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
}

.usecase-hero .back-link {
  color: var(--accent);
}

.usecase-hero .back-link:hover {
  color: white;
}

@media (max-width: 900px) {
  .usecase-grid,
  .outcome-list,
  .flow-diagram,
  .metric-grid,
  .pattern-grid,
  .usecase-journey,
  .related-usecases,
  .usecase-hero .container {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    text-align: center;
    transform: rotate(90deg);
  }

  .usecase-hero h1 {
    font-size: 2.2rem;
  }

  .usecase-nav-item {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .usecase-submenu-toggle {
    display: inline-block;
  }

  .usecase-submenu {
    position: static;
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transform: none;
    border: none;
    box-shadow: none;
    background: var(--bg-light);
    margin: 0;
    width: 100%;
  }

  .usecase-nav-item.active .usecase-submenu {
    opacity: 1;
    visibility: visible;
    max-height: 650px;
  }
}