/* Project Section */
.projects-section {
  background: rgba(0, 0, 0, 0.4);
}

/* Filter Buttons */
.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  justify-content: center;
}

.filter-button {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--secondary-color);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  font-size: 0.85rem;
  font-family: var(--font-main);
}

.filter-button:hover {
  background: rgba(0, 0, 0, 0.5);
  color: var(--primary-color);
}

.filter-button.active {
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}

/* Project Card */
.project-card {
  background: var(--card-bg);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--border-radius-lg);
  padding: 1.25rem;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  background: var(--card-hover-bg);
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Card Header */
.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.project-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-icon {
  color: var(--accent-color);
  font-size: 1rem;
}

.project-title {
  font-size: 1.05rem;
  margin: 0;
  color: var(--primary-color);
}

/* Status Badges */
.status-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.status-active {
  background: rgba(76, 175, 80, 0.15);
  color: var(--success-color);
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.status-in-progress {
  background: rgba(255, 152, 0, 0.15);
  color: var(--warning-color);
  border: 1px solid rgba(255, 152, 0, 0.3);
}

.status-operational {
  background: rgba(33, 150, 243, 0.15);
  color: var(--info-color);
  border: 1px solid rgba(33, 150, 243, 0.3);
}

.status-planning {
  background: rgba(156, 39, 176, 0.15);
  color: #ce93d8;
  border: 1px solid rgba(156, 39, 176, 0.3);
}

.status-completed {
  background: rgba(76, 175, 80, 0.25);
  color: var(--success-color);
  border: 1px solid rgba(76, 175, 80, 0.4);
}

/* Description */
.project-description {
  color: var(--secondary-color);
  font-size: 0.85rem;
  line-height: 1.5;
  margin: 0 0 0.75rem 0;
}

/* Tech Tags */
.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.tech-tag {
  background: rgba(74, 137, 220, 0.1);
  color: var(--accent-color);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.7rem;
  border: 1px solid rgba(74, 137, 220, 0.2);
}

/* Features List */
.project-features {
  list-style: none;
  padding: 0;
  margin: 0 0 0.75rem 0;
  font-size: 0.8rem;
  color: var(--secondary-color);
}

.project-features li {
  padding: 0.15rem 0;
  padding-left: 1rem;
  position: relative;
}

.project-features li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-color);
}

/* Progress Bar */
.project-progress {
  margin-bottom: 0.75rem;
}

.progress-label {
  font-size: 0.75rem;
  color: var(--secondary-color);
  margin-bottom: 0.3rem;
}

.progress-bar {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 4px;
  height: 6px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent-color), #6db3f2);
  transition: width 0.5s ease;
}

/* Card Footer */
.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

.project-link {
  font-size: 0.8rem;
  color: var(--accent-color);
  transition: var(--transition-fast);
}

.project-link:hover {
  color: #6db3f2;
}

.project-date {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.3);
}

/* Error Message */
.error-message {
  text-align: center;
  color: var(--danger-color);
  padding: 2rem;
}

/* Animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .project-filters {
    gap: 0.35rem;
  }

  .filter-button {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
  }

  .project-footer {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }
}