/* ============================================
   Estilos Compartidos (Menú y Footer)
   ============================================ */

/* ============================================
   Top Navigation (Fixed Menu)
   ============================================ */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.nav__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-lg);
}

.nav__logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-gray-900);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: transform 0.2s ease, color 0.2s ease;
    white-space: nowrap;
}

.nav__logo:hover {
    transform: scale(1.05);
    color: #667eea;
}

.nav__links {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

.nav__link {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-gray-700);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    border-radius: var(--border-radius-md);
    transition: all 0.2s ease;
    white-space: nowrap;
    position: relative;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav__link:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    transform: translateY(-1px);
}

.nav__link--active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.nav__link--active:hover {
    background: linear-gradient(135deg, #5568d3 0%, #653a8f 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.nav__link-icon {
    width: 16px !important;
    height: 16px !important;
    max-width: 16px !important;
    max-height: 16px !important;
    object-fit: contain;
    flex-shrink: 0;
    display: block;
}

/* Responsive: Menú en móviles */
@media (max-width: 640px) {
    .nav__content {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-sm) 0;
        gap: var(--spacing-sm);
    }

    .nav__logo {
        font-size: 1.125rem;
    }

    .nav__links {
        width: 100%;
        justify-content: space-between;
    }

    .nav__link {
        flex: 1;
        text-align: center;
        font-size: 0.875rem;
        padding: var(--spacing-xs) var(--spacing-sm);
        justify-content: center;
    }
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-gray-800);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.footer p {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.footer__github {
    margin-top: var(--spacing-sm);
}

.footer__link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

.footer__link:hover {
    color: white;
    text-decoration: underline;
}