/**
 * ============================================================================
 * SKILLS DOMAIN STYLESHEET
 * ============================================================================
 * Mengatur tata letak matriks keahlian 4 domain teknologi, kartu keahlian
 * berbingkai metalik, ikon vektor, dan badge spesialisasi teknologi.
 * Mengikuti tema gelap metalik obsidian dan aksen merah metalik presisi.
 */

.skills-section {
  position: relative;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.skills-header {
  margin-bottom: var(--space-12, 3rem);
}

.skills-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2, 0.5rem);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.skills-eyebrow-line {
  display: inline-block;
  width: 20px;
  height: 2px;
  background-color: var(--red-primary);
}

.skills-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.skills-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  max-width: 68ch;
  line-height: var(--leading-relaxed);
  margin: 0;
}

/* Grid 4 Domain Keahlian */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6, 1.5rem);
  width: 100%;
}

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

@media (min-width: 1100px) {
  .skills-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Kartu Keahlian Metalik */
.skill-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6, 1.5rem);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-metallic);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-card-hover), 0 8px 24px -6px var(--red-glow);
}

/* Header Kartu: Ikon & Indikator */
.skill-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.skill-icon-wrapper {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-accent);
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.skill-card:hover .skill-icon-wrapper {
  border-color: var(--red-badge-border);
  color: var(--red-hover);
  box-shadow: 0 0 12px var(--red-glow);
}

.skill-icon {
  width: 22px;
  height: 22px;
}

.skill-card-index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* Konten Kartu */
.skill-card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.015em;
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}

.skill-card-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
  flex-grow: 1;
}

/* Tech Badges */
.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2, 0.5rem);
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

.skill-badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: 0.2rem 0.55rem;
  background-color: var(--red-badge-bg);
  border: 1px solid var(--red-badge-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  letter-spacing: 0.02em;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.skill-card:hover .skill-badge {
  border-color: rgba(230, 46, 61, 0.45);
}

.skill-badge:hover {
  background-color: rgba(230, 46, 61, 0.2);
  color: #ffffff;
}