* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary), ui-sans-serif;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: white;
}

/* ============================================
   FOCUS STATES - Accesibilidad WCAG 2.1 AA
   ============================================ */
*:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.btn-primary:focus-visible,
.btn-outline-primary:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(0, 210, 255, 0.2);
}

.nav-link:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: var(--border-radius);
}

.whatsapp-float:focus-visible {
    outline: 3px solid white;
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(0, 210, 255, 0.4);
}

.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 30px;
    right: 30px;
    background-color: var(--color-whatsapp);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
    transition: var(--transition-long);
    z-index: 1000;
    animation: float 3s ease-in-out infinite;
}

/* Animación de flotación suave */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Badge de "Escríbenos" */
.whatsapp-float::after {
    content: 'Escríbenos';
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    color: var(--color-whatsapp);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.whatsapp-float:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(-5px);
}

/* Efecto hover mejorado */
.whatsapp-float:hover {
    background-color: var(--color-whatsapp-dark);
    transform: scale(1.15);
    box-shadow: 0 12px 32px rgba(37, 211, 102, 0.5);
    animation: none;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

.btn-primary {
    background-color: var(--color-secondary);
    border: none;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition-long);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

/* Efecto ripple sutil */
.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    background-color: var(--color-secondary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(227, 6, 19, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(227, 6, 19, 0.2);
    transition: all 0.1s ease;
}

.btn-outline-primary {
    color: var(--color-primary);
    background-color: transparent;
    border: 2px solid var(--color-primary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition-long);
    text-decoration: none;
    display: inline-block;
}

.btn-outline-primary:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 72, 164, 0.2);
}

.btn-outline-primary:active {
    transform: translateY(0);
    transition: all 0.1s ease;
}

.navbar {
    background-color: white;
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-sm) 0;
    border-bottom: 3px solid var(--color-accent);
}

.navbar-brand {
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    text-decoration: none;
}

.nav-link {
    color: var(--color-gray-600);
    font-weight: 500;
    margin: 0 var(--spacing-xs);
    transition: var(--transition-base);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    position: relative;
}

/* Underline animado en nav links */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s ease, left 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
    left: 10%;
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: rgba(0, 72, 164, 0.05);
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 700;
    background-color: rgba(0, 210, 255, 0.1);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

.footer {
    background-color: var(--color-gray-900);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-top: 4px solid var(--color-accent);
}

.footer h5 {
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.footer p {
    color: var(--color-gray-200);
    line-height: var(--line-height-relaxed);
}

.footer a {
    color: var(--color-gray-200);
    text-decoration: none;
    transition: var(--transition-base);
}

.footer a:hover {
    color: var(--color-accent);
    transform: translateX(3px);
}

/* Footer Social Icons */
.footer-social a {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition-base);
}

.footer-social a:hover {
    background-color: var(--color-accent);
    color: var(--color-gray-900);
    transform: translateY(-3px);
}

/* Footer Links */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    color: var(--color-gray-200);
}

.footer-links a i {
    font-size: 0.75rem;
    transition: var(--transition-base);
}

.footer-links a:hover i {
    transform: translateX(5px);
}

/* Footer Contact */
.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1rem;
    color: var(--color-gray-200);
}

.footer-contact i {
    color: var(--color-accent);
    width: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Responsive Footer */
@media (max-width: 991px) {
    .footer .col-lg-4 {
        margin-bottom: var(--spacing-md);
    }

    .footer h5 {
        font-size: 1.1rem;
    }
}

@media (max-width: 767px) {
    .footer {
        text-align: center;
    }

    .footer-links a,
    .footer-contact li {
        justify-content: center;
    }
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* ============================================
   SCROLL BEHAVIOR
   ============================================ */
html {
    scroll-behavior: smooth;
}

.section {
    scroll-margin-top: 80px; /* Altura del navbar fijo */
}

/* ============================================
   ACCESSIBILITY - Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .whatsapp-float {
        animation: none;
    }
}

@media (max-width: 768px) {
    .whatsapp-float {
        width: 55px;
        height: 55px;
        bottom: 20px;
        right: 20px;
    }
}