/* ============================================================
   TABBED SKILLS SHOWCASE SECTION
   ============================================================ */
#skills {
  background: transparent;
  padding: 8rem 0;
  position: relative;
}

/* The Mini Navbar */
#skills-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 4rem;
  padding: 0 1rem;
}

.skill-tab-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
  backdrop-filter: blur(8px);
  will-change: transform;
  transform: translateZ(0);
}

.skill-tab-btn:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px) translateZ(0);
}

.skill-tab-btn.active {
  background: var(--gradient-btn);
  color: var(--text-on-accent);
  border-color: transparent;
  box-shadow: 0 5px 20px var(--accent-glow);
}

/* The Boxes Container */
#skills-container {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* The Category Box */
.skill-category-box {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 24px;
  padding: 3rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  display: none; /* Hidden by default, toggled via JS */
  will-change: opacity, transform;
  transform: translateZ(0);
  backface-visibility: hidden;
  animation: boxFadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.skill-category-box.active {
  display: block;
}

@keyframes boxFadeIn {
  from { opacity: 0; transform: translateY(20px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Creative Animated Border */
.skill-category-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 4px;
  background: var(--gradient-hero);
  opacity: 0.8;
}

.box-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.box-icon {
  width: 48px;
  height: 48px;
  background: var(--tag-bg);
  color: var(--accent-primary);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: var(--shadow-glow);
}

.box-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: capitalize;
}

/* The Skills Inside */
.box-skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.skill-node {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: all 0.3s ease;
  position: relative;
}

[data-theme="matcha"] .skill-node {
  background: #F4F3EE;
  border-color: rgba(59, 91, 71, 0.12);
}

[data-theme="spidey"] .skill-node {
  background: #FFFDF8;
  border-color: rgba(185, 28, 28, 0.12);
}

.skill-node:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateY(-5px);
  box-shadow: 0 10px 25px var(--accent-glow);
}

[data-theme="matcha"] .skill-node:hover,
[data-theme="spidey"] .skill-node:hover {
  background: #FFFFFF;
  border-color: var(--accent-primary);
}

.skill-node-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.skill-name {
  font-family: 'Inter', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-pct {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: rgba(0,0,0,0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
}

.skill-node:hover .skill-pct {
  color: var(--accent-primary);
  background: var(--tag-bg);
}

/* Circular/Linear Progress inside node */
.skill-progress-track {
  width: 100%;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.skill-progress-fill {
  height: 100%;
  background: var(--gradient-hero);
  border-radius: 3px;
  width: 0;
  transition: width 1.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 768px) {
  #skills {
    padding: 5rem 0;
  }

  #skills-nav {
    gap: 0.6rem;
    margin-bottom: 2.5rem;
  }

  .skill-tab-btn {
    padding: 0.6rem 1.1rem;
    font-size: 0.78rem;
  }

  .skill-category-box {
    padding: 2rem 1.5rem;
    border-radius: 18px;
  }

  .box-header {
    gap: 1rem;
    margin-bottom: 1.5rem;
  }

  .box-icon {
    width: 40px;
    height: 40px;
  }

  .box-title {
    font-size: 1.4rem;
  }

  .box-skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
  }

  .skill-node {
    padding: 1.2rem;
    border-radius: 12px;
  }

  .skill-name {
    font-size: 0.95rem;
  }
}

@media (max-width: 480px) {
  #skills {
    padding: 3.5rem 0;
  }

  #skills-nav {
    gap: 0.5rem;
    margin-bottom: 2rem;
    padding: 0 0.5rem;
  }

  .skill-tab-btn {
    padding: 0.5rem 0.85rem;
    font-size: 0.72rem;
  }

  .skill-category-box {
    padding: 1.5rem 1.25rem;
    border-radius: 14px;
  }

  .box-title {
    font-size: 1.2rem;
  }

  .box-skills-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .skill-node {
    padding: 1rem;
    border-radius: 10px;
  }

  .skill-name {
    font-size: 0.9rem;
  }

  .skill-pct {
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
  }
}

@media (max-width: 360px) {
  .skill-category-box {
    padding: 1.25rem 1rem;
  }

  .skill-tab-btn {
    padding: 0.4rem 0.7rem;
    font-size: 0.68rem;
  }
}