Fix navbar z-index conflicts and responsive positioning issues

[Copilot]

Fixes the navbar "sticking" and responsive issues reported in Spanish: "El navbar se queda 'pegado' y mi navbar no funciona bien en responsive".

Problem

The navbar had several positioning and layering conflicts:

• Settings panel (z-index: 10) was overlapping the navbar (z-index: 5) causing visual conflicts
• At 1200px+ breakpoints, the navbar switches from position: fixed; bottom: 0 to position: absolute; top: 0; right: 0, but the settings panel was also positioned at the top-right causing overlap
• Mobile devices had suboptimal spacing on very small screens (≤374px)

Solution

Made minimal, surgical changes to fix the positioning hierarchy:

1. Fixed Z-Index Hierarchy

.navbar {
  z-index: 15; /* Increased from 5 to ensure navbar appears above settings panel */
}

2. Resolved Settings Panel Conflict at Large Screens

@media (min-width: 1200px) {
  .settings-panel {
    top: 70px; /* Move below navbar when it's positioned at top-right */
    right: 20px;
  }
}

3. Improved Mobile Responsiveness

@media (max-width: 374px) {
  .navbar-link {
    padding: 15px 4px; /* Reduced padding for better fit */
    font-size: var(--fs5);
  }
  .navbar-list {
    padding: 0 5px;
    gap: 2px;
  }
}

Testing

Verified across multiple breakpoints and navigation flows:

• ✅ Mobile (320px, 374px)
• ✅ Tablet (768px)
• ✅ Desktop transitions (1199px, 1200px, 1400px)
• ✅ All navbar navigation (About → Resume → Portfolio → Contact)
• ✅ Settings panel positioning at all screen sizes

The navbar now works smoothly across all responsive breakpoints without any "sticking" or overlap issues.

**Before (showing conflicts):** - Desktop: https://github.com/user-attachments/assets/f879fd21-f32a-460c-9549-95879dfe1855 - Mobile: https://github.com/user-attachments/assets/94c382b0-91f4-46eb-aefe-f4fa3ab668b8

After: All positioning conflicts resolved with proper navbar layering and responsive behavior.

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