:root {
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-card: #ffffff;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent: #ea1d2c;
    --accent-light: rgba(234, 29, 44, 0.08);
    --border: #e2e8f0;
    --border-hover: #cbd5e1;

    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-pixel: 'Press Start 2P', monospace;
    --nav-height: 72px;
    --radius: 12px;
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

ul { list-style: none; }

strong { font-weight: 600; color: var(--text); }

/* ── Pixel Font ── */
.pixel-font {
    font-family: var(--font-pixel);
    letter-spacing: 0.5px;
}

.blink {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ── Navbar ── */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    z-index: 100;
    transition: var(--transition);
}

nav.scrolled {
    border-bottom-color: var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 100%;
}

.logo {
    font-size: 0.75rem;
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background-color: var(--text);
    transition: var(--transition);
    transform-origin: center;
}

/* ── Hero ── */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
    padding-top: calc(var(--nav-height) + 2rem);
    width: 100%;
    z-index: 2;
}

.hero-tag {
    font-size: 0.55rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    text-transform: lowercase;
}

.hero h1 {
    font-family: var(--font-sans);
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.hero .dot {
    color: var(--accent);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--text);
    color: var(--bg);
    border: 1px solid var(--text);
}

.btn-primary:hover {
    background-color: #1e293b;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    border-color: var(--text);
    background-color: var(--bg-alt);
    transform: translateY(-2px);
}

/* Hero grid decoration */
.hero-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.grid-bg {
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: linear-gradient(to left, rgba(0,0,0,0.4), transparent);
    -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.4), transparent);
}

/* ── Sections ── */
.section {
    max-width: 1000px;
    margin: 0 auto;
    padding: 90px 2rem;
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.section-header.center {
    justify-content: center;
}

.section-label {
    font-size: 0.55rem;
    color: var(--accent);
}

.section-header h2 {
    font-family: var(--font-sans);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* ── About ── */
.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3.5rem;
}

.about-text p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding-top: 0.25rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.detail-label {
    font-size: 0.5rem;
    color: var(--accent);
    text-transform: uppercase;
}

.detail-item span:last-child {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text);
}

/* ── Skills Detailed ── */
.skills-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.skill-category h3 {
    font-size: 0.55rem;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 1.25rem;
    letter-spacing: 1px;
}

.skill-grid-detailed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.skill-card-detailed {
    background-color: var(--bg-alt);
    border: 1px solid var(--border);
    padding: 1.25rem 1.25rem;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: var(--transition);
}

.skill-head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.skill-head i {
    font-size: 1.75rem;
    color: var(--text);
    transition: var(--transition);
}

.skill-head strong {
    font-size: 0.95rem;
    font-weight: 600;
}

.skill-context {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.skill-card-detailed:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(234, 29, 44, 0.06);
    background-color: var(--bg);
}

.skill-card-detailed:hover .skill-head i {
    color: var(--accent);
}

/* ── Projects Grid ── */
.projects-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 1.5rem !important;
    width: 100%;
}

@media (max-width: 960px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 640px) {
    .projects-grid {
        grid-template-columns: 1fr !important;
    }
}

.project-card {
    background-color: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: var(--transition);
    height: 100%;
}

.project-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.06);
    background-color: var(--bg);
}

.project-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
}

.project-link {
    font-size: 1.3rem;
    color: var(--text-muted);
    transition: var(--transition);
    flex-shrink: 0;
}

.project-link:hover {
    color: var(--accent);
    transform: scale(1.1);
}

.project-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.project-title a {
    color: var(--text);
    transition: var(--transition);
}

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

.project-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.65;
    flex-grow: 1;
}

.project-description strong {
    color: var(--text);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
}

.project-tags li {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.3rem 0.75rem;
    border-radius: 6px;
    background-color: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.project-card:hover .project-tags li {
    background-color: var(--bg-alt);
}

/* ── Contact ── */
#contato {
    text-align: center;
    max-width: 700px;
}

.contact-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

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

.contact-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    background-color: var(--bg-alt);
}

.contact-card i {
    font-size: 1.1rem;
    color: var(--accent);
}

.contact-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(234, 29, 44, 0.08);
    background-color: var(--bg);
}

/* ── Footer ── */
footer {
    border-top: 1px solid var(--border);
    padding: 2.5rem 2rem;
    text-align: center;
    background-color: var(--bg-alt);
}

.footer-logo {
    font-size: 0.6rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.footer-socials {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.footer-socials a {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.footer-socials a:hover {
    color: var(--accent);
}

.footer-content > p:last-child {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ── Animations ── */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
        z-index: 1000;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.5rem;
        transition: right 0.3s ease;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.1rem;
    }

    .nav-links a::after { display: none; }

    .hamburger.active span:nth-child(1) {
        transform: translateY(4px) rotate(45deg);
    }
    .hamburger.active span:nth-child(2) {
        transform: translateY(-4px) rotate(-45deg);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero h1 {
        font-size: clamp(2.2rem, 10vw, 3.5rem);
    }

    .hero-decoration {
        display: none;
    }

    .section {
        padding: 60px 1.5rem;
    }

    .project-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .skill-grid-detailed {
        grid-template-columns: 1fr;
    }

    .contact-links {
        flex-direction: column;
        align-items: stretch;
    }
}