/* ==========================================================================
   13. FOOTER
   ========================================================================== */

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-16) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-8);
}

.footer-logo .logo {
    margin-bottom: var(--spacing-4);
}

.footer-logo p {
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    max-width: 300px;
}

.footer-links-group {
    display: flex;
    gap: var(--spacing-16);
}

.footer-links h4 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-links a {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.footer-links a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.footer-bottom {
    margin-top: var(--spacing-12);
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.copyright {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.social-media {
    display: flex;
    gap: var(--spacing-4);
}

.social-media a {
    color: var(--text-secondary);
    font-size: var(--text-xl);
    transition: color var(--transition-fast);
}

.social-media a:hover {
    color: var(--cyan-500);
}

/* Responsive Footer */
@media (max-width: 768px) {
    .footer-content, .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links-group {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-8);
        width: 100%;
    }
}


/* ====================================
   CONTACT SECTION - PREMIUM DESIGN
   ==================================== */

.contact-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #312e81 100%);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-3xl) 0;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Contact Hero */
.contact-hero {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.contact-hero-title {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin: var(--spacing-lg) 0;
    color: #ffffff;
}

.contact-hero-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto;
}

/* Contact Cards */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.contact-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(124, 58, 237, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-card:hover {
    transform: translateY(-4px);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.contact-card:hover::before {
    opacity: 1;
}

.contact-card-primary {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
    border-color: rgba(59, 130, 246, 0.2);
}

.contact-card-primary:hover {
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 16px 48px rgba(59, 130, 246, 0.2);
}

.contact-card-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    flex-shrink: 0;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    z-index: 1;
}

.contact-card:hover .contact-card-icon {
    transform: scale(1.05) rotate(-3deg);
}

.contact-card-content {
    position: relative;
    z-index: 1;
}

.contact-card-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #94a3b8;
    margin-bottom: 0.5rem;
}

.contact-card-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: var(--spacing-sm);
}

.contact-card-action {
    font-size: 0.95rem;
    color: #60a5fa;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-card:hover .contact-card-action {
    gap: 0.75rem;
}

/* Social Links */
.contact-social {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.social-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #94a3b8;
    margin-bottom: var(--spacing-md);
}

.social-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.social-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    color: #cbd5e1;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.social-button:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(59, 130, 246, 0.3);
    color: #60a5fa;
    transform: translateY(-2px);
}

.social-button svg {
    flex-shrink: 0;
}

/* Response Badge */
.response-badge {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.response-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.response-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.response-text strong {
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
}

.response-text span {
    font-size: 0.875rem;
    color: #94a3b8;
}

/* Tecnologias Section */
.tecnologias {
    background: #0f172a;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.tech-category {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.tech-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.tech-category:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(59, 130, 246, 0.5);
    transform: translateY(-5px);
}

.tech-category:hover::before {
    transform: scaleX(1);
}

.tech-category h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: #ffffff;
}

.tech-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tech-list li {
    padding: var(--spacing-sm) 0;
    color: #cbd5e1;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

.tech-list li:last-child {
    border-bottom: none;
}

.tech-list li:hover {
    color: #3b82f6;
    padding-left: var(--spacing-sm);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-sticky);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(59, 130, 246, 0.4);
}

/* ====================================
   RIPPLE EFFECT
   ==================================== */
.btn {
    position: relative;
    overflow: hidden;
}

.btn .ripple {
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: rippleEffect 0.6s ease-out;
    pointer-events: none;
}

@keyframes rippleEffect {
    to {
        transform: scale(15);
        opacity: 0;
    }
}

/* ====================================
   NAVBAR ACTIVE LINK
   ==================================== */
.nav-menu a.active {
    color: var(--accent-400);
    position: relative;
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-400);
    border-radius: 2px;
}

/* ====================================
   SCROLL ANIMATIONS
   ==================================== */
.section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.animate {
    opacity: 1;
    transform: translateY(0);
}

/* ====================================
   CARD HOVER TRANSFORM
   ==================================== */
.projeto-card {
    transition: transform 0.3s ease;
    transform-style: preserve-3d;
}

/* ====================================
   ACCESSIBILITY
   ==================================== */
body.menu-open {
    overflow: hidden;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--accent-400);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-to-main {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--accent-500);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 9999;
}

.skip-to-main:focus {
    top: 0;
}