:root {
  --skill-primary-dark: #047857;
  --skill-primary: #10b981;
  --skill-primary-light: #d1fae5;
  --skill-text-dark: #1f2937;
  --skill-text-light: #6b7280;
  --skill-background: #ffffff;
  --skill-section-bg: #f9fafb;
  --skill-border-color: #e5e7eb;
  --skill-shadow: rgba(5, 150, 105, 0.05);
  --skill-shadow-hover: rgba(5, 150, 105, 0.15);
}

.skills {
  font-family: 'Poppins', sans-serif;
  background-color: var(--skill-section-bg);
  padding: 80px 5vw;
  overflow-x: hidden;
}

.skills__container {
  max-width: 1100px;
  margin: 0 auto;
}

.skills__header {
  text-align: center;
  margin-bottom: 50px;
}

.skills__title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--skill-text-dark);
  margin: 0 0 10px;
}

.skills__subtitle {
  font-size: 1.125rem;
  color: var(--skill-text-light);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.skills-card {
  background-color: var(--skill-background);
  border-radius: 16px;
  padding: 30px;
  border: 1px solid var(--skill-border-color);
  box-shadow: 0 4px 15px var(--skill-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.skills-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 35px var(--skill-shadow-hover);
  border-color: var(--skill-primary);
}

.skills-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--skill-primary-dark);
  margin: 0 0 25px 0;
  border-bottom: 1px solid var(--skill-border-color);
  padding-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.skills-card__title i {
  width: 28px;
  height: 28px;
  color: var(--skill-primary);
  transition: transform 0.3s ease;
}

.skills-card:hover .skills-card__title i {
  transform: scale(1.1);
}

.skills-card__list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.skill-item {
  position: relative;
  padding: 10px;
  border-radius: 8px;
  transition: background-color 0.2s ease, opacity 0.5s ease-out, transform 0.5s ease-out;
  opacity: 0;
  transform: translateX(-20px);
}

.skills-card.is-visible .skill-item {
  opacity: 1;
  transform: translateX(0);
}

.skills-card.is-visible .skill-item:nth-child(2) {
  transition-delay: 0.1s;
}

.skills-card.is-visible .skill-item:nth-child(3) {
  transition-delay: 0.2s;
}

.skills-card.is-visible .skill-item:nth-child(4) {
  transition-delay: 0.3s;
}

.skill-item:hover {
  background-color: var(--skill-primary-light);
}

.skill-item__info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 1rem;
}

.skill-item__details {
  display: flex;
  align-items: center;
  gap: 12px;
}

.skill-item__icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  transition: transform 0.3s ease-in-out;
}

.skill-item:hover .skill-item__icon {
  transform: scale(1.15) rotate(-5deg);
}

.skill-item__name {
  font-weight: 500;
  color: var(--skill-text-dark);
  transition: color 0.2s ease;
}

.skill-item__level {
  font-weight: 500;
  color: var(--skill-text-light);
  transition: color 0.2s ease;
}

.skill-item:hover .skill-item__name,
.skill-item:hover .skill-item__level {
  color: var(--skill-primary-dark);
}

.skill-item__track {
  width: 100%;
  height: 10px;
  background-color: #e5e7eb;
  border-radius: 5px;
  overflow: hidden;
}

.skill-item__fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--skill-primary), var(--skill-primary-dark));
  border-radius: 5px;
  transition: width 1.5s cubic-bezier(0.25, 1, 0.5, 1) 0.3s, filter 0.2s ease;
}

.skill-item:hover .skill-item__fill {
  filter: brightness(1.15);
}

@media (max-width: 768px) {
  .skills__title {
    font-size: 2rem;
  }

  .skills__subtitle {
    font-size: 1rem;
  }

  .skills {
    padding: 60px 5vw;
  }
}

@media (max-width: 480px) {
  .skills-card {
    padding: 25px;
  }

  .skills-card__title {
    font-size: 1.25rem;
  }
}