/* ==========================================================================
   PROJECT CARDS & HOW-IT-WORKS ARCHITECTURE EXPANSIONS
   ========================================================================== */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: 2rem;
}

.project-card {
  padding: 2.2rem;
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-cyan);
}

.project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.project-badge {
  font-family: var(--font-code);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.project-github-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--neu-shadow-btn);
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.project-github-link:hover {
  color: #fff;
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.15);
  box-shadow: 0 0 15px var(--accent-cyan-glow);
  transform: scale(1.08);
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-top: 0.5rem;
}

.project-pitch {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* "How It Works" Technical Step Box */
.project-mechanism-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--neu-shadow-inset);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

[data-theme="light"] .project-mechanism-box {
  background: rgba(230, 238, 248, 0.6);
  border-color: rgba(255, 255, 255, 0.8);
}

.mechanism-title {
  font-family: var(--font-code);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.mechanism-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.mechanism-step {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.step-num {
  font-family: var(--font-code);
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.15);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.step-content strong {
  color: var(--text-primary);
}

.project-footer {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--glass-border);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.project-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

@media (max-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 1.35rem;
  }

  .project-card {
    padding: 1.5rem 1.25rem;
    gap: 1.25rem;
  }

  .project-title {
    font-size: 1.25rem;
  }

  .project-pitch {
    font-size: 0.88rem;
    line-height: 1.55;
  }

  .project-mechanism-box {
    padding: 1rem;
    gap: 0.65rem;
  }

  .mechanism-step {
    font-size: 0.8rem;
    line-height: 1.4;
  }
}

@media (max-width: 480px) {
  .project-card {
    padding: 1.25rem 1rem;
    border-radius: var(--radius-md);
  }

  .project-title {
    font-size: 1.15rem;
  }

  .project-badge {
    font-size: 0.68rem;
    padding: 0.2rem 0.6rem;
  }

  .project-github-link {
    width: 34px;
    height: 34px;
    font-size: 0.95rem;
  }

  .project-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .project-actions .neu-btn {
    width: 100%;
    justify-content: center;
  }
}