/* ============================================================
   SECCION SKILLS — agrupadas por categoría (Frontend, Backend,
   Bases de datos, Cloud & Herramientas), en vez de una única
   rejilla plana de iconos sueltos
   ============================================================ */
.skills {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    padding: 120px 0;
    transition: background-color 0.4s ease, color 0.4s ease;
}

.skill-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 22px;
    width: 100%;
}

.skill-category {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-4px);
    border-color: transparent;
    background: linear-gradient(var(--glass-bg), var(--glass-bg)) padding-box,
        linear-gradient(135deg, var(--accent), var(--accent-2)) border-box;
    border: 1px solid transparent;
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.skill-category-icon {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(var(--accent-rgb), 0.14);
    color: var(--accent);
    font-size: 18px;
}

.skill-category-header h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
}

.skill-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-pill);
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.skill-chip:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
}

.skill-chip img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}

.skill-chip i {
    font-size: 14px;
    color: var(--accent);
}