/* === Platform Hub Page Specific Styles === */

/* Platform Integration Grid */
.platform-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.platform-card {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  transition: transform var(--transition-med), box-shadow var(--transition-med);
  display: flex;
  flex-direction: column;
}

.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.platform-card .platform-desc {
  flex: 1;
}

.platform-card .view-guide-btn {
  align-self: center;
}

/* Verified checkmark in top-right corner */
.platform-card::after {
  content: '';
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 20px;
  height: 20px;
  background-image: url('images/checkmark.svg');
  background-size: contain;
  background-repeat: no-repeat;
}

.platform-logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  margin: 0 auto 1rem;
  display: block;
}

.platform-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.platform-desc {
  font-size: 0.9375rem;
  color: var(--white-dim);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.view-guide-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--yellow);
  border: 1px solid var(--yellow);
  border-radius: 50px;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.view-guide-btn:hover {
  background: var(--yellow);
  color: var(--black);
}

.view-guide-btn svg {
  width: 16px;
  height: 16px;
}

/* Engine Section */
.engine-section {
  padding: 5rem 0;
  background: linear-gradient(180deg, var(--dark-blue) 0%, var(--black) 100%);
}

.engine-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.engine-card {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--white-faint);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  text-align: center;
}

.engine-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--yellow);
  color: var(--black);
  font-size: 1.125rem;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 1rem;
}

.engine-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.engine-desc {
  font-size: 0.9375rem;
  color: var(--white-dim);
  line-height: 1.6;
}

.engine-platforms {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

.engine-platform-tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--yellow);
  background: rgba(255, 255, 138, 0.1);
  border: 1px solid rgba(255, 255, 138, 0.3);
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
}

/* Request Platform CTA */
.request-section {
  padding: 4rem 0;
  background: var(--black);
}

.request-box {
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.request-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.request-desc {
  font-size: 1rem;
  color: var(--white-dim);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.request-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--yellow);
  color: var(--black);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.875rem 1.75rem;
  border-radius: 50px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.request-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255, 255, 138, 0.25);
}

.request-btn svg {
  width: 20px;
  height: 20px;
}

/* === Student Workflow Section === */

.workflow-section {
  padding: 5rem 0;
}

.workflow-stack {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  margin-top: 3rem;
}

.workflow-phase {
  text-align: center;
}

.workflow-phase-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.workflow-phase-header .engine-number {
  margin-bottom: 0;
  width: auto;
  height: auto;
  background: none;
  color: var(--white);
  font-size: 1.75rem;
  border-radius: 0;
}

.workflow-phase-header .engine-title {
  margin-bottom: 0;
  font-size: 1.75rem;
}

.workflow-phase .engine-desc {
  max-width: 700px;
  margin: 0 auto;
}

.workflow-caption {
  display: block;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--white-dim);
  margin-top: 1.5rem;
  font-style: italic;
}

/* Phase 1: Source Logo Track */
.workflow-sources {
  margin-top: 2.5rem;
}

.workflow-logo-track {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2.5rem;
}

.workflow-logo-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.workflow-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.workflow-logo-name {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--white-dim);
}

/* Phase 2: Split View (Before/After) */
.split-view {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.split-panel {
  flex: 1;
  border-radius: 8px;
  overflow: hidden;
}

.split-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.5rem 1rem;
  text-align: left;
}

.split-content {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  text-align: left;
}

/* Before panel - Terminal style */
.split-before {
  background: #0d0d1a;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.split-before .split-label {
  color: #ff6b6b;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.split-before code {
  display: block;
  color: rgba(255, 255, 255, 0.4);
}

/* After panel - Clean style */
.split-after {
  background: rgba(255, 255, 138, 0.03);
  border: 1px solid rgba(255, 255, 138, 0.2);
}

.split-after .split-label {
  color: var(--yellow);
  border-bottom: 1px solid rgba(255, 255, 138, 0.1);
}

.split-after .split-content {
  font-family: var(--font-primary);
  font-size: 0.875rem;
}

.split-after .split-content p {
  color: var(--white);
  margin-bottom: 0.75rem;
}

.split-after .split-content p:last-child {
  margin-bottom: 0;
}

/* Split divider arrow */
.split-divider {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.25rem 0;
}

.split-arrow {
  width: 20px;
  height: 20px;
  stroke: var(--yellow);
  transform: rotate(90deg);
}

/* Phase 3: Destination Logos */
.workflow-destinations {
  margin-top: 2.5rem;
}

.destination-logos {
  display: flex;
  justify-content: center;
  gap: 3rem;
}

.destination-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.destination-logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.destination-name {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--white-dim);
}

/* Responsive */
@media (min-width: 640px) {
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
  
  .engine-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  
  /* Split view horizontal on tablet+ */
  .split-view {
    flex-direction: row;
    align-items: stretch;
  }
  
  .split-divider {
    padding: 0 0.5rem;
  }
  
  .split-arrow {
    transform: rotate(0deg);
  }
  
  .workflow-logo-track {
    gap: 3rem;
  }
  
  .workflow-logo {
    width: 64px;
    height: 64px;
  }
  
  .destination-logo-img {
    width: 56px;
    height: 56px;
  }
  
  .workflow-logo-name {
    font-size: 0.8125rem;
  }
  
  .destination-logos {
    gap: 3rem;
  }
}

@media (min-width: 768px) {
  .split-content {
    font-size: 0.875rem;
  }
  
  .workflow-phase-header .engine-number {
    font-size: 2rem;
  }
  
  .workflow-phase-header .engine-title {
    font-size: 2rem;
  }
}

@media (min-width: 1024px) {
  .platform-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .workflow-stack {
    gap: 5rem;
  }
  
  .workflow-logo-track {
    gap: 4rem;
  }
  
  .workflow-logo {
    width: 80px;
    height: 80px;
  }
  
  .destination-logo-img {
    width: 64px;
    height: 64px;
  }
  
  .workflow-logo-name {
    font-size: 0.875rem;
  }
  
  .destination-logos {
    gap: 4rem;
  }
  
  .destination-name {
    font-size: 0.875rem;
  }
}