@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-color-01: #0d1117;
    --bg-color-02: #111827;
    --surface-color: #151c2c;
    --surface-color-strong: #1b2436;
    --border-color: #2d3748;
    --main-color: #00d5e8;
    --accent-color: #7dd3a7;
    --text-color: #f8fafc;
    --muted-text: #a8b3c7;
    --shadow-color: #0000004d;
    --focus-color: #f8e16c;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
}

html {
    font-family: 'Poppins', sans-serif;
    font-size: 16px;
    scroll-padding-top: 5.5rem;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background: var(--bg-color-01);
    color: var(--text-color);
}

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

a,
button,
input,
textarea {
    font: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
.lang-toggle-checkbox:focus-visible + .lang-toggle-label {
    outline: 0.18rem solid var(--focus-color);
    outline-offset: 0.22rem;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    width: 100%;
    min-height: 4.8rem;
    padding: 0.9rem clamp(1rem, 5vw, 5rem);
    background: #0d1117f2;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(14px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    color: var(--text-color);
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.02rem;
}

.logo:hover {
    color: var(--main-color);
}

.nav {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav a,
.nav-responsive a {
    position: relative;
    color: var(--muted-text);
    border-radius: 0.5rem;
    padding: 0.55rem 0.8rem;
    font-weight: 500;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.nav a:hover,
.nav-responsive a:hover,
.nav a.is-active,
.nav-responsive a.is-active {
    color: var(--text-color);
    background: var(--surface-color-strong);
}

.nav a::after {
    content: '';
    position: absolute;
    right: 0.8rem;
    bottom: 0.35rem;
    left: 0.8rem;
    height: 0.12rem;
    background: var(--main-color);
    border-radius: 999px;
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.2s ease;
}

.nav a.is-active::after {
    transform: scaleX(1);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-switcher {
    position: relative;
}

.lang-toggle-checkbox {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.lang-toggle-label {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 4.35rem;
    height: 2rem;
    padding: 0 0.35rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    cursor: pointer;
}

.lang-toggle-label::after {
    content: '';
    position: absolute;
    top: 0.2rem;
    left: 0.2rem;
    z-index: 2;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background: var(--text-color);
    transition: transform 0.25s ease;
}

.lang-toggle-checkbox:checked + .lang-toggle-label::after {
    transform: translateX(2.3rem);
}

.flag-us,
.flag-br {
    width: 1.35rem;
    height: auto;
    border-radius: 0.15rem;
}

.menu-hamburguer {
    display: none;
    width: 2.7rem;
    height: 2.7rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--surface-color);
    cursor: pointer;
}

.bar1,
.bar2,
.bar3 {
    display: block;
    width: 1.35rem;
    height: 0.15rem;
    margin: 0.28rem auto;
    background-color: var(--text-color);
    border-radius: 999px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.change .bar1 {
    transform: translateY(0.43rem) rotate(45deg);
}

.change .bar2 {
    opacity: 0;
}

.change .bar3 {
    transform: translateY(-0.43rem) rotate(-45deg);
}

.nav-responsive {
    display: grid;
    gap: 0.35rem;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    width: 100%;
    padding: 0.8rem clamp(1rem, 5vw, 5rem) 1rem;
    background: #0d1117fa;
    border-bottom: 1px solid var(--border-color);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-0.45rem);
    visibility: hidden;
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
}

.nav-responsive.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    visibility: visible;
}

section {
    padding: 6.5rem clamp(1rem, 6vw, 6rem);
}

span {
    color: var(--main-color);
}

.home {
    min-height: 100vh;
    width: min(100%, 82.5rem);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.38fr) minmax(18rem, 1fr);
    align-items: center;
    gap: clamp(2.5rem, 5vw, 5rem);
}

.home-content {
    max-width: 45rem;
}

.home-content h3:first-child {
    margin-bottom: 0.75rem;
    color: var(--accent-color);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08rem;
}

.home-content h1 {
    max-width: 14ch;
    color: var(--text-color);
    font-size: clamp(2.45rem, 5.4vw, 4.45rem);
    font-weight: 800;
    line-height: 1.04;
}

.home-content h3:not(:first-child) {
    margin-top: 1rem;
    color: var(--muted-text);
    font-size: clamp(1.15rem, 2.4vw, 1.8rem);
    font-weight: 600;
}

.home-content p {
    margin-top: 1.4rem;
    color: var(--muted-text);
    font-size: 1rem;
    line-height: 1.75;
}

.home-summary {
    max-width: 42rem;
}

.home-supporting {
    max-width: 40rem;
    margin-top: 1.15rem;
    font-size: 0.95rem;
    line-height: 1.65;
}

.home-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 1.7rem;
}

.home-img {
    justify-self: center;
    width: min(100%, 25.625rem);
    max-width: 25.625rem;
    aspect-ratio: 4 / 5;
    padding: 0.7rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    box-shadow: 0 1.1rem 2.6rem #00000038;
}

.home-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 50% 18%;
    border-radius: 0.75rem;
}

.social-media {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.8rem;
}

.social-media a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    color: var(--main-color);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1.55rem;
    transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.social-media a:hover {
    transform: translateY(-0.15rem);
    border-color: var(--main-color);
    background: var(--surface-color-strong);
}

.social-media a:hover i {
    transform: scale(1.08);
}

.social-media i {
    transition: transform 0.2s ease;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 1.6rem;
    min-height: 2.9rem;
    padding: 0.75rem 1.15rem;
    color: #061116;
    background: var(--main-color);
    border: 1px solid var(--main-color);
    border-radius: 0.5rem;
    font-weight: 700;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
    color: var(--text-color);
    background: transparent;
    transform: translateY(-0.1rem);
}

.btn:active {
    transform: translateY(0) scale(0.98);
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.72;
    transform: none;
}

.home-actions .btn {
    margin-top: 0;
}

.btn-secondary {
    color: var(--text-color);
    background: transparent;
    border-color: var(--border-color);
}

.btn-secondary:hover {
    color: var(--main-color);
    border-color: var(--main-color);
    background: var(--surface-color-strong);
}

.services,
.contact {
    background: var(--bg-color-01);
}

.portfolio {
    background: var(--bg-color-02);
    scroll-margin-top: 5.5rem;
}

.portfolio h2 {
    max-width: 72rem;
    margin-right: auto;
    margin-left: auto;
}

.services h2,
.portfolio h2,
.contact h2 {
    margin-bottom: clamp(2rem, 5vw, 3.5rem);
    color: var(--text-color);
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.1;
    text-align: center;
}

.services-container {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.services-box {
    min-height: 100%;
    padding: 1.6rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: 0 1rem 2.5rem var(--shadow-color);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.services-box:hover {
    transform: translateY(-0.18rem);
    border-color: #00d5e866;
    box-shadow: 0 1rem 2.25rem #0000003d;
}

.services-box i {
    color: var(--accent-color);
    font-size: 2.5rem;
}

.services-box h3 {
    margin-top: 1rem;
    color: var(--text-color);
    font-size: 1.15rem;
}

.services-box p {
    margin-top: 0.85rem;
    color: var(--muted-text);
    font-size: 0.95rem;
    line-height: 1.65;
}

.portfolio-container {
    width: min(100%, 72rem);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
    gap: 1.5rem;
}

.portfolio-box {
    display: flex;
    min-width: 0;
    height: 100%;
    flex-direction: column;
    overflow: hidden;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: 0 0.8rem 2rem #0000002e;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.portfolio-box.is-featured {
    border-color: #00d5e880;
}

.portfolio-box:hover {
    transform: translateY(-0.18rem);
    border-color: #00d5e866;
    box-shadow: 0 1rem 2.25rem #0000003d;
}

.project-media {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #0a0f19;
}

.project-media img {
    display: block;
    width: 100%;
    height: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    object-position: top;
    transition: transform 0.2s ease;
}

.portfolio-box:hover .project-media img {
    transform: scale(1.015);
}

.project-media--fallback {
    display: grid;
    place-items: center;
    color: var(--muted-text);
    border-bottom: 1px solid var(--border-color);
}

.project-content {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 0.95rem;
    padding: 1.25rem;
}

.project-badge {
    align-self: flex-start;
    padding: 0.28rem 0.55rem;
    color: #061116;
    background: var(--accent-color);
    border-radius: 0.35rem;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04rem;
}

.project-content h3 {
    color: var(--text-color);
    font-size: 1.2rem;
    line-height: 1.25;
}

.project-content p {
    color: var(--muted-text);
    font-size: 0.95rem;
    line-height: 1.65;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
}

.project-tech li {
    padding: 0.35rem 0.55rem;
    color: var(--text-color);
    background: var(--surface-color-strong);
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
}

.portfolio-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: auto;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 2.5rem;
    padding: 0.62rem 0.75rem;
    color: var(--text-color);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-weight: 700;
    transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.project-link:hover {
    color: var(--main-color);
    border-color: var(--main-color);
    background: var(--surface-color-strong);
}

form {
    max-width: 45rem;
    margin: 0.6rem auto 2rem;
}

form .input-box {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.form-field {
    width: 100%;
    text-align: left;
}

.input-box .form-field {
    flex: 1 1 18rem;
}

.form-field label {
    display: inline-block;
    margin: 0.3rem 0 0.35rem;
    color: var(--muted-text);
    font-size: 0.9rem;
    font-weight: 600;
}

form input,
form textarea {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    color: var(--text-color);
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    margin: 0.4rem 0;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

form input:focus,
form textarea:focus {
    border-color: var(--main-color);
    background-color: var(--surface-color-strong);
}

form textarea {
    resize: none;
}

.form-submit {
    margin-top: 1rem;
}

.form-status {
    min-height: 1.5rem;
    margin-top: 0.9rem;
    color: var(--muted-text);
    font-size: 0.95rem;
    text-align: center;
}

.form-status[data-status="success"] {
    color: var(--accent-color);
}

.form-status[data-status="error"] {
    color: #ff9c9c;
}

footer {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.4rem clamp(1rem, 5vw, 5rem);
    color: var(--muted-text);
    background-color: var(--bg-color-01);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

@media (max-width: 1100px) {
    .services-container {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .nav {
        display: none;
    }

    .menu-hamburguer {
        display: inline-block;
    }

    section {
        padding: 5.8rem clamp(1rem, 5vw, 2rem);
    }

    .home {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 7rem;
        gap: 2.25rem;
    }

    .home-content h1 {
        max-width: 100%;
    }

    .home-img {
        width: min(100%, 24rem);
        justify-self: center;
    }
}

@media (max-width: 640px) {
    header {
        min-height: 4.4rem;
    }

    .logo {
        font-size: 1.15rem;
    }

    .header-controls {
        gap: 0.65rem;
    }

    .services-container,
    .portfolio-container {
        grid-template-columns: 1fr;
    }

    .services-box,
    .project-content {
        padding: 1rem;
    }

    .home {
        padding-top: 6.25rem;
        padding-right: 1.5rem;
        padding-left: 1.5rem;
    }

    .home-content h1 {
        font-size: clamp(2.25rem, 12vw, 3.2rem);
    }

    .home-actions {
        flex-direction: column;
    }

    .home-actions .btn {
        width: 100%;
    }

    .home-img {
        width: min(100%, 18.75rem);
    }

    .portfolio-links {
        flex-direction: column;
    }

    .project-link {
        justify-content: center;
        width: 100%;
    }

    .form-submit {
        width: 100%;
    }
}

.reveal {
    opacity: 0;
    transform: translateY(1.1rem);
    transition: opacity 0.48s ease, transform 0.48s ease;
    transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.home-img.reveal {
    transform: translateY(1.2rem) scale(0.985);
}

.home-img.reveal.is-visible {
    transform: translateY(0) scale(1);
}

body.is-language-changing [data-key] {
    opacity: 0.62;
}

[data-key] {
    transition: opacity 0.18s ease;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .reveal,
    .home-img.reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .portfolio-box:hover,
    .services-box:hover,
    .social-media a:hover,
    .btn:hover,
    .project-link:hover {
        transform: none;
    }
}