:root {
  --bg-primary: #0d1117;
  --bg-secondary: #0f1419;
  --text-primary: #e8f5e9;
  --text-secondary: #a8d5ba;
  --accent: #2ec158;
}

.light-mode {
  --bg-primary: #f0f7f1;
  --bg-secondary: #ffffff;
  --text-primary: #0d1b0d;
  --text-secondary: #2d5a2d;
  --accent: #1e8c2a;
}

body {
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.font-mono {
  font-family: 'JetBrains Mono', monospace;
}

.bg-primary {
  background-color: var(--bg-primary);
}

.bg-secondary {
  background-color: var(--bg-secondary);
}

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

.text-secondary {
  color: var(--text-secondary);
}

.text-accent {
  color: var(--accent);
}

.border-accent {
  border-color: var(--accent);
}

.bg-accent {
  background-color: var(--accent);
}

.ring-accent {
  --tw-ring-color: var(--accent);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-delay-1 {
  animation-delay: 0.1s;
}

.animate-delay-2 {
  animation-delay: 0.2s;
}

.animate-delay-3 {
  animation-delay: 0.3s;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.9rem;
}

.skill-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.45rem;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0.9rem;
  padding: 1rem 0.85rem;
  min-height: 172px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  cursor: default;
}

.light-mode .skill-card {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(245, 250, 246, 0.92));
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow: 0 10px 24px rgba(7, 31, 12, 0.08);
}

.skill-card:hover,
.skill-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.32);
  outline: none;
}

.light-mode .skill-card:hover,
.light-mode .skill-card:focus-visible {
  box-shadow: 0 12px 28px rgba(7, 31, 12, 0.14);
}

.skill-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 0.85rem;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.light-mode .skill-icon-wrap {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
}

.skill-icon {
  width: 28px;
  height: 28px;
}

.skill-icon--wide {
  width: 42px;
  height: auto;
  max-height: 26px;
  object-fit: contain;
}

.skill-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  line-height: 1.2;
  color: var(--text-primary);
}

.skill-level {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.skill-dots {
  display: flex;
  align-items: center;
  gap: 0.32rem;
}

.skill-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.light-mode .skill-dot {
  background: rgba(0, 0, 0, 0.16);
  border-color: rgba(0, 0, 0, 0.16);
}

.skill-dot.is-filled {
  background: var(--accent);
  border-color: var(--accent);
}

.skill-card::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 12px);
  transform: translateX(-50%) translateY(6px);
  width: max-content;
  max-width: 230px;
  padding: 0.45rem 0.6rem;
  border-radius: 0.5rem;
  font-size: 0.72rem;
  line-height: 1.35;
  background: #08120b;
  color: #dff7e3;
  border: 1px solid rgba(46, 193, 88, 0.45);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 20;
}

.light-mode .skill-card::after {
  background: #0f2412;
  color: #ebffef;
}

.skill-card::before {
  content: '';
  position: absolute;
  left: 50%;
  bottom: calc(100% + 6px);
  width: 10px;
  height: 10px;
  transform: translateX(-50%) rotate(45deg);
  background: #08120b;
  border-right: 1px solid rgba(46, 193, 88, 0.45);
  border-bottom: 1px solid rgba(46, 193, 88, 0.45);
  opacity: 0;
  transition: opacity 0.18s ease;
  z-index: 19;
}

.skill-card:hover::after,
.skill-card:hover::before,
.skill-card:focus-visible::after,
.skill-card:focus-visible::before {
  opacity: 1;
}

.skill-card:hover::after,
.skill-card:focus-visible::after {
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 640px) {
  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .skill-card {
    min-height: 162px;
  }

  .skill-card::after {
    display: none;
  }

  .skill-card::before {
    display: none;
  }
}

.project-card {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.light-mode .project-card {
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.modal-backdrop {
  background: rgba(0, 0, 0, 0.8);
}

.light-mode .modal-backdrop {
  background: rgba(0, 0, 0, 0.5);
}