:root {
    --background-darker: #0a0a0a;
    --background-dark: #111827;
    --background-medium: #1f2937;
    --background-light: #374151;
    --text-white: #f8fafc;
    --text-gray: #d1d5db;
    --text-muted: #9ca3af;
    --primary-color: #1e40af;
    --primary-hover: #1e3a8a;
    --accent-color: #3b82f6;
    --space-xl: 3rem;
    --space-lg: 2rem;
    --space-md: 1.5rem;
    --space-sm: 1rem;
    --border-width: 1px;
    --border-radius-lg: 12px;
}

/* Reset e configurações gerais */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: var(--background-darker);
    color: var(--text-white);
    padding-top: 76px;
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--background-darker), var(--background-dark)) !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    border-bottom: 1px solid var(--background-light);
}

.navbar-brand {
    font-size: 1.5rem !important;
    color: var(--text-white) !important;
}

.nav-link {
    font-weight: 500;
    color: var(--text-gray) !important;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color) !important;
    transform: translateY(-1px);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--background-dark), var(--background-darker));
    color: var(--text-white);
    padding: 120px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(30, 64, 175, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-section .display-4 {
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-white), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.hero-section .lead {
    font-size: 1.3rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.stat-item {
    padding: 1.5rem;
    background: rgba(30, 64, 175, 0.1);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--background-light);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.stat-text {
    font-size: 0.9rem;
    color: var(--text-gray);
}

/* Seções gerais */
section {
    padding: 80px 0;
    background-color: var(--background-dark);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-white);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

/* Sobre */
#sobre {
    background: var(--background-darker);
}

#sobre img {
    width: 250px;
    height: 250px;
    object-fit: cover;
    border: 5px solid var(--primary-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

#sobre .fs-5 {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
}

#sobre strong {
    color: var(--text-white);
}

/* Habilidades */
#habilidades {
    background: var(--background-dark);
    border-top: 1px solid var(--background-light);
    border-bottom: 1px solid var(--background-light);
}

.skill-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(30, 64, 175, 0.05);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--background-light);
    transition: all 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent-color);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.skill-logo {
    width: 32px;
    height: 32px;
    filter: brightness(0) invert(1);
}

.skill-header h5 {
    font-weight: 600;
    color: var(--text-white);
}

.skill-bar {
    background: var(--background-light);
    height: 8px;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 10px;
}

.skill-progress {
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    height: 100%;
    border-radius: 10px;
    transition: width 1s ease-in-out;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

/* Certificações */
#certificacoes {
    background: var(--background-darker);
}

.certification-item {
    background: linear-gradient(135deg, var(--background-medium), var(--background-dark));
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--background-light);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.certification-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
}

.certification-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.3);
    border-color: var(--accent-color);
}

.certification-item h5 {
    color: var(--text-white);
}

.certification-item p {
    color: var(--text-gray);
}

/* Projetos */
#projetos {
    background: var(--background-dark);
    border-top: 1px solid var(--background-light);
}

.card {
    border: 1px solid var(--background-light);
    background: var(--background-medium);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    height: 100%;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    border-color: var(--accent-color);
}

.card-img-top {
    border-bottom: 3px solid var(--primary-color);
}

.card-title {
    color: var(--text-white);
    font-weight: 600;
}

.card-text {
    color: var(--text-gray);
}

.card-text strong {
    color: var(--text-white);
}

.tech-tags .badge {
    margin-right: 5px;
    margin-bottom: 5px;
    background: var(--primary-color);
    color: var(--text-white);
    border: 1px solid var(--accent-color);
}

/* Formulário de Contato */
#contato {
    background: var(--background-darker);
}

#contato .card {
    background: var(--background-medium);
    border: 1px solid var(--background-light);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.form-label {
    color: var(--text-white);
    font-weight: 500;
}

.form-control,
.form-select {
    background: var(--background-dark);
    border: 2px solid var(--background-light);
    color: var(--text-white);
    padding: 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.form-control:focus,
.form-select:focus {
    background: var(--background-dark);
    border-color: var(--accent-color);
    color: var(--text-white);
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* Oportunidades */
#oportunidades {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-top: 1px solid var(--background-light);
    border-bottom: 1px solid var(--background-light);
}

.opportunity-item {
    transition: all 0.3s ease;
    padding: 2rem 1rem;
    border-radius: var(--border-radius-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.opportunity-item:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

.opportunity-item h4 {
    color: var(--text-white);
    font-weight: 600;
}

.opportunity-item p {
    color: rgba(255, 255, 255, 0.9);
}

/* Botões personalizados */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border: none;
    font-weight: 600;
    padding: 12px 30px;
    color: var(--text-white);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(30, 64, 175, 0.3);
    color: var(--text-white);
}

.btn-outline-light {
    border: 2px solid var(--text-gray);
    color: var(--text-gray);
    background: transparent;
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    background: var(--text-white);
    color: var(--background-dark);
    transform: translateY(-2px);
    border-color: var(--text-white);
}

.btn-success {
    background: linear-gradient(135deg, #059669, #10b981);
    border: none;
}

.btn-success:hover {
    background: linear-gradient(135deg, #047857, #059669);
    transform: translateY(-2px);
}

/* Footer */
footer {
    background-color: var(--background-darker);
    color: var(--text-white);
    padding: var(--space-xl) 0;
    border-top: var(--border-width) solid var(--background-light);
}

.contact-column {
    padding: var(--space-md);
    background: var(--background-medium);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--background-light);
    transition: all 0.3s ease;
    height: 100%;
}

.contact-column:hover {
    background: var(--background-light);
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.contact-icon {
    transition: all 0.3s ease;
}

.contact-column:hover .contact-icon {
    transform: scale(1.1);
}

.contact-info h5 {
    color: var(--text-white);
    font-weight: 600;
}

.contact-info p {
    font-size: 0.9rem;
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.contact-info .btn {
    transition: all 0.3s ease;
}

.contact-info .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.border-secondary {
    border-color: var(--background-light) !important;
}

/* Animações */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-dark);
}

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

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

/* Responsividade do Footer */
@media (max-width: 768px) {
    .contact-column {
        margin-bottom: var(--space-lg);
        text-align: center;
    }
    
    .contact-info p {
        font-size: 0.85rem;
    }
    
    .contact-icon i {
        font-size: 2.5rem !important;
    }
}

@media (max-width: 576px) {
    .contact-column {
        padding: var(--space-sm);
    }
    
    .contact-info p {
        font-size: 0.8rem;
        word-break: break-word;
    }
    
    .contact-info .btn {
        font-size: 0.8rem;
        padding: 0.5rem 1rem;
    }
}

/* Responsividade Geral */
@media (max-width: 768px) {
    .hero-section {
        padding: 100px 0;
        min-height: auto;
    }
    
    .hero-section .display-4 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    #sobre img {
        width: 200px;
        height: 200px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .stat-item {
        margin-bottom: 1rem;
    }
}

@media (max-width: 576px) {
    .hero-section .display-4 {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .skill-item {
        padding: 1rem;
    }
}