:root {
    /* Color Palette - Premium Dark Theme */
    --bg-main: #0a0a0f;
    --bg-secondary: #13131c;
    --bg-glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    
    --text-main: #f0f0f5;
    --text-muted: #a0a0b0;
    
    --accent-primary: #6366f1; /* Indigo */
    --accent-secondary: #8b5cf6; /* Violet */
    --accent-glow: rgba(99, 102, 241, 0.5);
    
    --success: #10b981;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Offset for sticky navbar */
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.glow {
    position: absolute;
    width: 50vw;
    height: 50vw;
    max-width: 600px;
    max-height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    animation: float 10s ease-in-out infinite alternate;
}

.glow-1 {
    top: -10%;
    right: -5%;
    background: var(--accent-primary);
    animation-delay: 0s;
}

.glow-2 {
    bottom: -10%;
    left: -10%;
    background: var(--accent-secondary);
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-30px, 30px) scale(1.1); }
}

/* Typography & Utilities */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.highlight {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
    transition: var(--transition-normal);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.nav-links a:hover {
    color: var(--text-main);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-normal);
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-primary);
    color: #fff;
    border: none;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--glass-border);
    color: var(--text-main);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-container {
    max-width: 800px;
    margin: 0;
}

.greeting {
    color: var(--accent-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* Projects Section */
.projects {
    padding: 6rem 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.03), rgba(255,255,255,0));
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

.project-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.5rem;
}

.project-header i {
    font-size: 2rem;
    color: var(--accent-primary);
}

.project-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    margin-bottom: 1.5rem;
}

.tech-tags li {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-family: var(--font-heading);
    color: var(--text-muted);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.9rem;
    font-family: var(--font-heading);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: var(--transition-fast);
}

.project-link:hover {
    color: var(--accent-primary);
}

/* Skills Section */
.skills {
    padding: 6rem 0;
    background: rgba(19, 19, 28, 0.5);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.skill-item {
    background: var(--bg-glass);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-normal);
}

.skill-item i {
    font-size: 3rem;
    color: var(--accent-primary);
    transition: var(--transition-normal);
}

.skill-item span {
    font-family: var(--font-heading);
    font-weight: 500;
}

.skill-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-5px);
    border-color: var(--accent-secondary);
}

.skill-item:hover i {
    transform: scale(1.1);
    color: var(--accent-secondary);
}

/* Contact Section */
.contact {
    padding: 6rem 0;
}

.contact-box {
    text-align: center;
    padding: 4rem 2rem;
    border-radius: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
}

.contact-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 50%);
    z-index: 0;
    pointer-events: none;
}

.contact-box > * {
    position: relative;
    z-index: 1;
}

.contact-box p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem auto;
    font-size: 1.1rem;
}

.email-btn {
    font-size: 1.1rem;
    padding: 1rem 2rem;
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.whatsapp-btn {
    background: #25D366;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.whatsapp-btn:hover {
    background: #128C7E;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

/* Modal / Lightbox */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 15, 0.95);
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.close-modal {
    position: absolute;
    top: 2rem;
    right: 3rem;
    color: var(--text-main);
    font-size: 2.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 1001;
}

.close-modal:hover {
    color: var(--accent-primary);
    transform: scale(1.1);
}

.modal-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    width: 90%;
    max-width: 1200px;
    position: relative;
}

.modal-img-container {
    max-width: 80vw;
    max-height: 80vh;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
    border: 1px solid var(--glass-border);
}

#modalImg {
    width: 100%;
    height: auto;
    max-height: 80vh;
    object-fit: contain;
    display: block;
}

.nav-btn {
    background: var(--bg-glass);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.nav-btn:hover {
    background: var(--accent-primary);
    transform: scale(1.1);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    background: transparent;
}

.modal-indicators {
    display: flex;
    gap: 0.5rem;
    margin-top: 2rem;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--glass-border);
    cursor: pointer;
    transition: var(--transition-fast);
}

.indicator.active {
    background: var(--accent-primary);
    transform: scale(1.3);
}

.empty-album-msg {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-muted);
}

.empty-album-msg i {
    font-size: 4rem;
    color: var(--glass-border);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Footer */
footer {
    padding: 2rem 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-sub {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Em um cenário real, aqui entraria um menu hamburger */
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn-primary, .hero-actions .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .modal-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .close-modal {
        top: 1rem;
        right: 1.5rem;
    }
}