:root {
    --bg-color: #0a0a0a;
    --bg-color-alt: #121212;
    --card-color: #1a1a1a;
    --primary-color: #ffffff;
    --glow-color: rgba(29, 78, 216, 0.3);
    --text-color: #e0e0e0;
    --text-muted-color: #888888;
    --border-color: #2e2e2e;
    --font-main: 'Exo 2', sans-serif;
    --font-mono: 'Roboto Mono', monospace;
    --header-height: 4.5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231a1a1a' fill-opacity='0.4'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    min-height: auto;
    padding: 8rem 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.section:nth-of-type(even) {
    background-color: var(--bg-color-alt);
}

.section__header {
    margin-bottom: 4rem;
}

.section__title {
    font-family: var(--font-mono);
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    color: var(--primary-color);
    font-weight: 400;
}

.button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    border: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    color: var(--primary-color);
    text-decoration: none;
    font-family: var(--font-mono);
    transition: background-color 0.3s, border-color 0.3s;
}

.button:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--text-muted-color);
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Header */
.header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    background-color: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    transition: transform 0.4s ease-in-out;
}

.header.visible {
    transform: translateY(0);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    color: var(--primary-color);
    font-weight: 700;
    font-family: var(--font-mono);
    font-size: 1.5rem;
    text-decoration: none;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: 2rem;
    counter-reset: item;
}

.nav__link {
    text-decoration: none;
    color: var(--text-color);
    font-family: var(--font-mono);
    position: relative;
    transition: color 0.3s;
}

.nav__link:hover,
.nav__link.active {
    color: var(--primary-color);
}

.nav__link::before {
    content: '0' counter(item) '.';
    counter-increment: item;
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* Hero */
.hero {
    min-height: 100vh;
    justify-content: center;
    text-align: left;
    overflow: hidden;
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
}

.hero-glow {
    position: absolute;
    width: 800px;
    height: 800px;
    left: 50%;
    top: 50%;
    background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    animation: pulse 8s infinite ease-in-out;
    z-index: 0;
}

@keyframes pulse {
    0% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(0.9);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.1);
    }
    100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(0.9);
    }
}

.hero__container {
    position: relative;
    z-index: 2;
    max-width: 1000px;
}

.hero__title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.hero__subtitle {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: 400;
    color: var(--text-muted-color);
    line-height: 1.1;
    margin-bottom: 2rem;
}

.hero__description {
    max-width: 600px;
    margin-top: 1rem;
    color: var(--text-muted-color);
}

.hero__actions {
    margin-top: 2.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.button-cv {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

.hero__socials {
    display: flex;
    gap: 1.5rem;
}

.hero__social-link {
    font-size: 1.5rem;
    color: var(--text-muted-color);
    transition: color 0.3s, transform 0.3s;
}

.hero__social-link:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.highlight {
    color: var(--primary-color);
    font-weight: 600;
}

/* Habilidades */
.skills__container {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* força 3 colunas */
    gap: 2rem;
}


.skills__column h3 {
    font-family: var(--font-mono);
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.8rem;
}

.skills__column .skill__card {
    margin-bottom: 0.8rem;
}

.skill__card {
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s, background-color 0.3s;
}

.skill__card:hover {
    transform: translateY(-3px);
    background-color: #2a2a2a;
}

.skill__card i {
    font-size: 1.2rem;
    color: var(--text-muted-color);
    width: 20px;
    text-align: center;
}

.skill__card span {
    font-family: var(--font-mono);
    font-size: 0.9rem;
}


/* Trajetória & Pesquisa */
#trajectory-content h3 {
    font-family: var(--font-mono);
    color: var(--primary-color);
    margin-top: 3rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

#trajectory-content h3:first-of-type {
    margin-top: 0;
}

.timeline {
    position: relative;
    max-width: 800px;
}

.timeline-item {
    border-left: 2px solid var(--border-color);
    padding: 0.5rem 0 2rem 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -9px;
    top: 10px;
    width: 16px;
    height: 16px;
    background-color: var(--bg-color-alt);
    border: 3px solid var(--text-muted-color);
    border-radius: 50%;
}

.timeline-degree {
    font-size: 1.2rem;
    color: var(--text-color);
}

.timeline-institution {
    font-family: var(--font-mono);
    color: var(--primary-color);
}

.timeline-period {
    font-size: 0.9rem;
    color: var(--text-muted-color);
    margin: 0.2rem 0 0.5rem;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.research-card {
    background-color: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.3s;
}

.research-card:hover {
    transform: translateY(-5px);
}

.research-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    filter: grayscale(50%);
}

.research-card-content {
    padding: 1.5rem;
}

.research-category {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.research-title {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

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

/* Projetos */
.projects__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* força 3 colunas */
    gap: 1.5rem;
    --grid-max-height: 0px; /* Será definido pelo JS */
    max-height: var(--grid-max-height);
    overflow: hidden;
    transition: max-height 0.7s ease-in-out;
}

.projects__grid.expanded {
    max-height: 2000px;
    /* Valor alto para acomodar todos */
}

.project__card {
    background: var(--card-color);
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
    height: 350px;
    display: flex;
    flex-direction: column;
}

.project__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.project__image-wrapper {
    height: 180px;
    overflow: hidden;
}

.project__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project__content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project__title {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.project__description {
    color: var(--text-muted-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.project__button {
    width: 100%;
    text-align: center;
    display: block;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    background-color: transparent;
    color: var(--text-color);
    font-family: var(--font-mono);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s;
    margin-top: auto;
}

.project__button:hover {
    background-color: var(--border-color);
    color: var(--primary-color);
}

.show-more__container {
    margin-top: 2rem;
    text-align: center;
}

/* Contato */
.contact__container {
    max-width: 700px;
    margin: auto;
    text-align: center;
}

.contact__heading {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.contact__text {
    margin-bottom: 2.5rem;
    color: var(--text-muted-color);
}

.button-contact {
    font-size: 1.1rem;
    padding: 1rem 2rem;
}

/* Footer */
.footer {
    background-color: #000;
    padding: 2rem 0;
    text-align: center;
    color: var(--text-muted-color);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
}

/* Modal */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.is-open {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--bg-color-alt);
    border-radius: 4px;
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border-color);
    opacity: 0;
    transition: opacity 0.3s ease 0.1s;
}

.modal.is-open .modal-content {
    opacity: 1;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    color: var(--text-muted-color);
    font-size: 2rem;
    cursor: pointer;
    transition: color 0.3s;
    background: none;
    border: none;
    z-index: 10;
}

.modal-close:hover {
    color: var(--primary-color);
}

.modal-body {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 2rem;
    padding: 2rem;
}

.modal-image-container {
    max-height: 500px;
    overflow: hidden;
    border-radius: 4px;
}

#modal-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#modal-title {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

#modal-description {
    color: var(--text-muted-color);
    margin-bottom: 1.5rem;
}

.modal-tech h4 {
    font-family: var(--font-mono);
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.modal-tech ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
    padding: 0;
}

.modal-tech li {
    background-color: var(--border-color);
    color: var(--text-color);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

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

.button-small {
    padding: 0.6rem 1.2rem;
}

@media (max-width: 992px) {
    .modal-body {
        grid-template-columns: 1fr;
    }
    .modal-image-container {
        max-height: 300px;
    }
}

@media (max-width: 768px) {
    .nav__menu {
        display: none;
    }
}