:root {
    --primary-color: #0ea5e9; /* Modern blue */
    --primary-dark: #0284c7;
    --background-color: #0f172a; /* Slate 900 */
    --surface-color: #1e293b; /* Slate 800 */
    --text-color: #f1f5f9; /* Slate 100 */
    --secondary-text-color: #94a3b8; /* Slate 400 */
    --accent-color: #38bdf8;
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 100%);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 0 20px;
}

/* Header & Glassmorphism */
header {
    background-color: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.nav-brand {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 800;
    text-decoration: none;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
}

.nav-menu {
    list-style: none;
    display: flex;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    padding: 8px 0;
    transition: color 0.3s ease-in-out;
    position: relative;
    font-weight: 500;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--accent-color);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle .bar {
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: all 0.3s ease-in-out;
}

.menu-toggle.open .bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.menu-toggle.open .bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.open .bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

main {
    padding-top: 80px;
}

section {
    padding: 80px 0;
}

section h2 {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
    color: var(--text-color);
    position: relative;
    display: table;
    margin-left: auto;
    margin-right: auto;
}

section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 10px auto 0;
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    margin-top: 20px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
    opacity: 0.9;
}

/* Sobre */
.about-container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--surface-color);
    box-shadow: var(--shadow-glow);
    transition: transform 0.3s ease;
}

.about-image:hover img {
    transform: scale(1.05);
}

.about-text h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    line-height: 1.2;
    background: linear-gradient(to right, #fff, #94a3b8);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-text h2 {
    font-size: 1.5rem;
    color: var(--secondary-text-color);
    margin-bottom: 25px;
    font-weight: 500;
    display: block;
    text-align: left;
}

.about-text h2::after {
    display: none;
}

.about-text p {
    color: var(--secondary-text-color);
    font-size: 1.1rem;
    max-width: 600px;
}

/* Experiência */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background-color: var(--surface-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: var(--background-color);
    border: 4px solid var(--primary-color);
    top: 25px;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 10px rgba(14, 165, 233, 0.5);
}

.timeline-item:nth-child(even)::after {
    left: -10px;
}

.timeline-content {
    padding: 30px;
    background-color: var(--surface-color);
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.timeline-content a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.timeline-content h3 {
    color: var(--text-color);
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.timeline-content .company {
    font-weight: bold;
    display: block;
    margin: 5px 0;
    color: var(--primary-color);
}

.timeline-content .date {
    font-size: 0.9rem;
    color: var(--secondary-text-color);
    margin-bottom: 15px;
    display: block;
}

.timeline-content ul {
    list-style-position: inside;
    color: var(--secondary-text-color);
}

.timeline-content ul li {
    margin-bottom: 8px;
}

/* Projetos */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background-color: var(--surface-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.4s ease;
    border: 1px solid var(--glass-border);
    position: relative;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary-color);
}

.project-card img {
    width: 100%; 
    height: 220px; 
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover img {
    transform: scale(1.1);
}

.project-card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card h3 {
    color: var(--text-color);
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.project-card p {
    color: var(--secondary-text-color);
    margin-bottom: 20px;
    flex-grow: 1;
    line-height: 1.6;
}

.project-card a {
    display: inline-block;
    text-decoration: none;
    color: var(--primary-color);
    font-weight: bold;
    margin-top: auto;
    transition: color 0.3s ease;
}

.project-card a:hover {
    color: var(--accent-color);
}

/* Contato */
#contato {
    text-align: center;
    background: linear-gradient(to top, var(--surface-color), var(--background-color));
}

.social-links {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-links a {
    color: var(--text-color);
    text-decoration: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--surface-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    border: 1px solid var(--glass-border);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 0;
    background-color: var(--background-color);
    border-top: 1px solid var(--glass-border);
    color: var(--secondary-text-color);
}

/* Scroll Animations */
.hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* Responsividade */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 80%;
        height: 100vh;
        background-color: var(--surface-color);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        z-index: 1000;
        box-shadow: -5px 0 15px rgba(0,0,0,0.5);
        padding-top: 80px;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-menu li {
        margin: 20px 0;
    }

    .about-container {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

    .about-text h1 {
        font-size: 2.2rem;
    }

    .timeline::after {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 15px;
    }

    .timeline-item:nth-child(even) {
        left: 0%;
    }

    .timeline-item::after {
        left: 12px;
    }

    .nav-menu a {
        font-size: 1.4rem;
    }
}