:root {
    --bg-primary: #06060d;
    --bg-secondary: #0c0c18;
    --bg-card: rgba(255, 255, 255, 0.022);
    --bg-card-hover: rgba(255, 255, 255, 0.045);
    --border: rgba(255, 255, 255, 0.05);
    --border-hover: rgba(255, 255, 255, 0.10);
    --text-primary: #e4e4ec;
    --text-secondary: #9090a0;
    --text-tertiary: #5a5a6e;
    --accent: #5eead4;
    --accent-soft: rgba(94, 234, 212, 0.08);
    --accent-glow: rgba(94, 234, 212, 0.18);
    --accent-hover: #7ff5e0;
    --font-heading: 'Montserrat', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --max-width: 1100px;
    --header-height: 64px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-weight: 400;
    font-size: 1rem;
    overflow-x: hidden;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: -40vh;
    right: -30vw;
    width: 80vw;
    height: 80vw;
    max-width: 900px;
    max-height: 900px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 65%);
    pointer-events: none;
    z-index: 0;
    opacity: 0.7;
}

body::after {
    content: '';
    position: fixed;
    bottom: -30vh;
    left: -20vw;
    width: 60vw;
    height: 60vw;
    max-width: 600px;
    max-height: 600px;
    background: radial-gradient(circle, rgba(120, 100, 210, 0.10) 0%, transparent 65%);
    pointer-events: none;
    z-index: 0;
    opacity: 0.6;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition);
}

ul {
    list-style: none;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 800;
}
h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
}
h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background: rgba(6, 6, 13, 0.78);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.3);
}

header .nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.03em;
    color: var(--accent);
    z-index: 1001;
    transition: color var(--transition);
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}
.nav-links a {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition), background var(--transition);
    white-space: nowrap;
}
.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
    outline: none;
}
.nav-links a.btn-nav {
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 600;
    padding: 0.5rem 1.2rem;
}
.nav-links a.btn-nav:hover {
    background: rgba(94, 234, 212, 0.16);
    color: var(--accent-hover);
}

#hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 1.5rem 4rem;
}

.hero-content {
    max-width: 650px;
}

.availability-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(94, 234, 212, 0.07);
    border: 1px solid rgba(94, 234, 212, 0.18);
    border-radius: 50px;
    padding: 0.4rem 1.1rem;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 2rem;
    animation: fadeInUp 0.7s ease-out;
}
.availability-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s ease-in-out infinite;
}

.hero-content h1 {
    margin-bottom: 1.2rem;
    animation: fadeInUp 0.7s ease-out 0.1s both;
}
.hero-content h1 .highlight {
    color: var(--accent);
    position: relative;
}

.hero-content .subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.7s ease-out 0.2s both;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 0.7s ease-out 0.3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.8rem;
    border-radius: 50px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
}
.btn-primary {
    background: var(--accent);
    color: #050510;
    border-color: var(--accent);
    box-shadow: 0 4px 20px rgba(94, 234, 212, 0.25);
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 6px 30px rgba(94, 234, 212, 0.4);
    transform: translateY(-2px);
}
.btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--text-primary);
}
.btn-outline:hover {
    border-color: rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.03);
    transform: translateY(-2px);
}

section {
    position: relative;
    z-index: 1;
    padding: 6rem 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}
.section-header h2 {
    margin-bottom: 0.6rem;
}
.section-header p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
    font-size: 0.95rem;
}

#tech {
    padding-top: 3rem;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 1rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.7rem;
    padding: 1.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
    cursor: default;
}
.tech-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}
.tech-item i {
    font-size: 2rem;
    color: var(--text-secondary);
    transition: color var(--transition);
}
.tech-item:hover i {
    color: var(--accent);
}
.tech-item span {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition);
}
.tech-item:hover span {
    color: var(--text-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}
.project-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(94, 234, 212, 0.08);
}

.project-image {
    width: 100%;
    aspect-ratio: 16 / 10;
    position: relative;
    overflow: hidden;
    background: var(--bg-secondary);
}

.project-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.02) 50%,
        transparent 100%
    );
    animation: shimmer 2s infinite;
    z-index: 0;
    pointer-events: none;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.project-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), filter 0.4s ease;
    position: relative;
    z-index: 1;
}

.project-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(6, 6, 13, 0.4) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition);
    z-index: 2;
    pointer-events: none;
}

.project-card:hover .project-image::after {
    opacity: 1;
}

.project-card:hover .project-thumb {
    transform: scale(1.04);
    filter: brightness(0.9);
}

.project-image .overlay {
    position: absolute;
    inset: 0;
    background: rgba(6, 6, 13, 0.25);
    opacity: 0;
    transition: opacity var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 3;
}

.project-card:hover .overlay {
    opacity: 1;
}
.overlay .icon-link {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    transition: all var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.15);
}
.overlay .icon-link:hover {
    background: var(--accent);
    color: #050510;
    border-color: var(--accent);
    transform: scale(1.1);
}

.project-info {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.project-tags span {
    font-size: 0.72rem;
    font-weight: 500;
    padding: 0.25rem 0.7rem;
    border-radius: 50px;
    background: var(--accent-soft);
    color: var(--accent);
    letter-spacing: 0.03em;
}
.project-info h3 {
    margin-top: 0.2rem;
}
.project-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex: 1;
}
.project-links {
    display: flex;
    gap: 0.8rem;
    margin-top: 0.5rem;
}
.project-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: color var(--transition);
}
.project-links a:hover {
    color: var(--accent);
}

#contato {
    text-align: center;
    padding-bottom: 5rem;
}
#contato .contact-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}
.contact-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.9rem 1.6rem;
    border-radius: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}
.contact-link i {
    font-size: 1.1rem;
}
.contact-link:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}
.contact-link:hover i {
    color: var(--accent);
}

footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.82rem;
}
footer span {
    color: var(--accent);
}

.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes pulse {
    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.4;
        transform: scale(1.25);
    }
}

@media (min-width: 600px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.2rem;
    }
    .nav-links {
        gap: 0.3rem;
    }
    .nav-links a {
        padding: 0.5rem 0.9rem;
        font-size: 0.85rem;
    }
}

@media (min-width: 900px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.8rem;
    }
    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    section {
        padding: 7rem 2rem;
    }
    #hero {
        padding: 8rem 2rem 5rem;
    }
    .hero-content .subtitle {
        font-size: 1.25rem;
    }
    .nav-links a {
        padding: 0.5rem 1.1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 420px) {
    .nav-links a {
        padding: 0.45rem 0.6rem;
        font-size: 0.78rem;
    }
    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.7rem;
    }
    .tech-item {
        padding: 1.2rem 0.5rem;
    }
    .tech-item i {
        font-size: 1.6rem;
    }
    .tech-item span {
        font-size: 0.7rem;
    }
}

@media (max-width: 380px) {
    .nav-links {
        gap: 0;
    }
    .nav-links a {
        padding: 0.4rem 0.5rem;
        font-size: 0.72rem;
    }
    .logo {
        font-size: 1.1rem;
    }
}