/* Downlink-Specific Layout Enhancements */
.nav-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 2rem;
    transition: color 0.15s ease;
}
.nav-back:hover { color: var(--accent); }

.hero-download {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    margin-top: 2rem;
}

.download-meta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.spec-card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.spec-card h3 {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.spec-list {
    list-style: none;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.spec-list li {
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
    padding-bottom: 0.25rem;
}

.spec-label { color: var(--text-main); }

.code-block {
    background: #050608;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #7dd3fc;
    overflow-x: auto;
    margin-top: 1rem;
}

/* Modal Overlay Background */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 6, 8, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

/* Modal Window Container */
.modal-content {
  background: var(--panel-bg);
  border: 1px solid var(--border-hover);
  border-radius: 10px;
  max-width: 480px;
  width: 100%;
  padding: 1.75rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 20px var(--accent-glow);
  animation: modalFadeIn 0.2s ease-out;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.modal-title {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-main);
}

.modal-body {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}

/* Secondary Button for Acknowledge */
.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.5rem 1rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
}

/* Fade-in Animation */
@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Credits Grid */
.credits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.credit-card {
  background: rgba(16, 20, 28, 0.5);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  transition: border-color 0.2s ease;
}

.credit-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
}

.credit-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.credit-name {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
}

.credit-role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border-hover);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.credit-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 0;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.project-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}