:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --text-color-light: #555555;
    --border-color: #eeeeee;
    --accent-color: #FFC107; 
    --header-bg: #f8f8f8; 
    --footer-bg: #f8f8f8; 
    --bubble-bg: #333;
    --bubble-text: #ffffff;
    --link-color: #007bff;
    --search-bg: #e9ecef;
    --search-text: #495057;
    --text-on-accent: #000000; 
    --back-to-top-bg: #FFC107;
    --back-to-top-text: #111111;
}

html.dark-mode {
    --bg-color: #121212;
    --text-color: #f0f0f0;
    --text-color-light: #bbbbbb;
    --border-color: #333333;
    --header-bg: #1c1c1c; 
    --footer-bg: #1c1c1c; 
    --bubble-bg: #f0f0f0;
    --bubble-text: #121212;
    --link-color: #3391ff;
    --search-bg: #343a40;
    --search-text: #dee2e6;
    --text-on-accent: #000000; 
    --back-to-top-bg: #FFC107;
    --back-to-top-text: #111111;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Lato', 'Arial', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    transition: background-color 0.3s, color 0.3s;
}

main {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    min-height: 70vh; 
}

a {
    color: var(--link-color);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

p {
    margin-bottom: 1.2rem;
    color: var(--text-color-light);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    color: var(--text-color);
    margin-bottom: 1rem;
}

ul, ol {
    margin-left: 20px;
    margin-bottom: 1rem;
    color: var(--text-color-light);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    background-color: var(--header-bg); 
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(5px);
    transition: background-color 0.3s, border-color 0.3s;
}

.logo a {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color); 
    text-decoration: none;
    flex-shrink: 0; 
    transition: color 0.3s;
    display: flex; 
    align-items: center;
    gap: 8px; 
}
.logo a:hover {
    text-decoration: none;
    opacity: 0.8;
}

.header-favicon {
   display: none; 
}

.nav-wrapper {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-grow: 1; 
    justify-content: flex-end; 
}

.main-nav {
    display: flex;
}

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

.nav-menu li {
    margin-left: 25px;
}

.nav-menu li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    padding-bottom: 5px;
    transition: color 0.3s;
}

.nav-menu li a:hover {
    color: var(--accent-color);
    text-decoration: none; 
}

.main-nav,
.header-controls {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.1s ease-in-out, visibility 0s 0.1s; 
}

body.js-loaded .main-nav,
body.js-loaded .header-controls {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.1s ease-in-out; 
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}
.search-box input {
    background-color: var(--search-bg);
    color: var(--search-text);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 6px 12px 6px 30px;
    font-size: 0.9rem;
    width: 180px;
    transition: width 0.3s, background-color 0.3s, border-color 0.3s;
}
.search-box input:focus {
    width: 220px;
    outline: none;
    border-color: var(--accent-color);
}
.search-box i.fa-search {
    position: absolute;
    left: 10px;
    color: var(--text-color-light);
    font-size: 0.9rem;
}

#search-results {
    display: none;
    position: absolute;
    top: calc(100% + 5px); 
    left: 0;
    width: 280px; 
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    z-index: 1100; 
    max-height: 300px;
    overflow-y: auto;
}
.search-result-item {
    display: block;
    padding: 10px 15px;
    color: var(--text-color-light);
    text-decoration: none;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}
.search-result-item:last-child {
    border-bottom: none;
}
.search-result-item:hover {
    background-color: var(--border-color);
    color: var(--text-color);
    text-decoration: none;
}
.search-result-item strong {
    color: var(--text-color);
}
.search-no-result {
    display: block;
    padding: 10px 15px;
    color: var(--text-color-light);
    font-size: 0.9rem;
    text-align: center;
}

.language-switcher {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}
.language-switcher button {
    background: none;
    border: none;
    color: var(--text-color-light);
    padding: 5px 8px;
    font-size: 0.8rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, opacity 0.3s;
}
.language-switcher button:first-child {
    border-right: 1px solid var(--border-color);
}
.language-switcher button.active {
    background-color: var(--accent-color); 
    color: var(--text-on-accent); 
}
.language-switcher button:not(.active):hover {
    background-color: var(--border-color);
    color: var(--text-color);
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
}
#theme-toggle .icon-sun { display: none; }
#theme-toggle .icon-moon { display: inline-block; }
html.dark-mode #theme-toggle .icon-sun { display: inline-block; }
html.dark-mode #theme-toggle .icon-moon { display: none; }

#mobile-menu-toggle {
    display: none; 
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}
#mobile-menu-toggle .icon-close { display: none; }
#mobile-menu-toggle .icon-hamburger { display: inline-block; }

body.nav-menu-open #mobile-menu-toggle .icon-close { display: inline-block; }
body.nav-menu-open #mobile-menu-toggle .icon-hamburger { display: none; }

.hero {
    text-align: center;
    padding: 40px 0 20px 0;
}
.hero h1 {
    font-size: 2.5rem;
}
.hero .subtitle {
    font-size: 1.3rem;
    font-family: 'Lato', 'Arial', sans-serif;
    color: var(--text-color-light);
}
.divider {
    border: 0;
    height: 1px;
    background: var(--border-color);
    margin: 30px auto;
    width: 50%;
}

.profile-section {
    padding: 20px 0;
}
.profile-container {
    display: flex;
    gap: 30px;
}
.profile-column-left {
    flex-basis: 250px;
    min-width: 250px;
}
.profile-column-right {
    flex: 1;
}
.profile-image-wrapper {
    position: relative;
}
.profile-photo {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.status-bubble {
    width: 18px;
    height: 18px;
    background-color: var(--accent-color);
    border-radius: 50%;
    position: absolute;
    bottom: 6px;
    left: -1px; 
    border: 2px solid var(--bg-color);
    animation: pulse 1.5s infinite;
}
@keyframes pulse {
    0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(255, 193, 7, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(255, 193, 7, 0); }
    100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(255, 193, 7, 0); }
}

.collab-bubble {
    position: absolute;
    bottom: 35px; 
    left: 10px;  
    background-color: var(--bubble-bg);
    color: var(--bubble-text);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s, transform 0.3s;
    white-space: nowrap; 
}
.profile-image-wrapper:hover .collab-bubble {
    opacity: 1;
    transform: translateY(0);
}
.collab-bubble::after {
    content: '';
    position: absolute;
    bottom: -8px; 
    left: -1px;  
    border-width: 8px 8px 0 8px;
    border-style: solid;
    border-color: var(--bubble-bg) transparent transparent transparent;
}

.content-page {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}

.content-page,
.hero,
.profile-section {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

body.js-loaded .content-page,
body.js-loaded .hero,
body.js-loaded .profile-section {
    opacity: 1;
}

.content-page h1 {
    font-size: 2.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 30px;
}
.content-page h2 {
    font-size: 1.8rem;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
    margin-top: 40px;
    margin-bottom: 20px;
}

.paper {
    margin-bottom: 15px; 
}
.paper-link-wrapper {
    display: flex;
    align-items: flex-start; 
    gap: 15px; 
    text-decoration: none;
    padding: 12px;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}
.paper-icon {
    padding-top: 5px; 
}
.paper-icon i {
    font-size: 1.5rem; 
    color: var(--text-color-light);
    transition: color 0.3s ease;
}
.paper-details {
    display: flex;
    flex-direction: column;
}
.paper-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 5px;
    transition: color 0.3s ease;
}
.paper-authors {
    font-style: italic;
    color: var(--text-color-light);
    font-size: 0.95rem;
    margin-bottom: 5px;
    transition: color 0.3s ease;
}
.paper-venue {
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--text-color-light);
    transition: color 0.3s ease;
}

.paper-link-wrapper:hover {
    background-color: var(--border-color); 
    text-decoration: none;
}
.paper-link-wrapper:hover .paper-icon i {
    color: var(--accent-color); 
}
.paper-link-wrapper:hover .paper-title {
    color: var(--accent-color); 
}
.paper-link-wrapper:hover .paper-authors,
.paper-link-wrapper:hover .paper-venue {
    color: var(--text-color); 
}

.course {
    margin-bottom: 30px;
}
.course-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 5px;
}
.course-details {
    font-style: italic;
    color: var(--text-color-light);
    font-size: 0.95rem;
    margin-bottom: 5px;
}

/* Antigo .btn-download, mantido caso outras páginas usem */
.btn-download {
    display: inline-block;
    background-color: var(--accent-color);
    color: #111;
    padding: 12px 22px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    margin-top: 20px;
    transition: background-color 0.3s, color 0.3s;
}
.btn-download:hover {
    background-color: #ffda6a; 
    text-decoration: none;
    color: #111;
}

footer {
    text-align: center;
    padding: 40px 20px;
    background-color: var(--footer-bg); 
    border-top: 1px solid var(--border-color);
    margin-top: 40px;
    transition: background-color 0.3s, border-color 0.3s;
}
.social-links a {
    font-size: 1.8rem;
    color: var(--text-color-light);
    margin: 0 12px;
    transition: color 0.3s;
}
.social-links a:hover {
    color: var(--accent-color);
}
footer p {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-color-light);
}

#back-to-top {
    display: none; 
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--back-to-top-bg);
    color: var(--back-to-top-text);
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s, opacity 0.3s, transform 0.3s;
    z-index: 1000;
    opacity: 0; 
    transform: translateY(20px);
}

#back-to-top.show {
    display: block; 
    opacity: 1;
    transform: translateY(0);
}

#back-to-top:hover {
    background-color: #ffda6a; 
    transform: translateY(-2px);
}


@media (max-width: 900px) { 
    .nav-wrapper {
        
        order: 3;
        width: 100%;
        margin-top: 10px;
        
        justify-content: flex-end;
    }
    
    header {
        flex-wrap: wrap; 
    }
    
    .logo {
        width: 100%; 
        margin-bottom: 10px;
    }

    .main-nav {
        display: none; 
        position: absolute;
        top: 125px; 
        left: 0;
        width: 100%;
        background-color: var(--header-bg);
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        order: 4; 
    }

    
    .main-nav.active {
        display: flex;
    }

    .main-nav .nav-menu {
        flex-direction: column;
        width: 100%;
    }

    .main-nav .nav-menu li {
        margin: 0;
    }
    
    .main-nav .nav-menu li a {
        display: block;
        padding: 15px 30px;
        border-bottom: 1px solid var(--border-color);
    }
    .main-nav .nav-menu li:last-child a {
        border-bottom: none;
    }

    #mobile-menu-toggle {
        display: block; 
    }
    
    .search-box {
        display: none; 
    }

    .profile-container {
        flex-direction: column;
        align-items: center;
    }
    .profile-column-left {
        width: 80%;
        max-width: 350px;
        margin-bottom: 20px;
    }
    
    .photo-gallery {
        column-count: 2;
    }
}

.photo-gallery {
    column-count: 3;
    column-gap: 15px; 
    margin-top: 20px;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

body.gallery-loaded .photo-gallery {
    opacity: 1;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    break-inside: avoid-column; 
    margin-bottom: 15px; 
}

.gallery-item img {
    width: 100%;
    height: auto; 
    object-fit: cover; 
    transition: transform 0.4s ease, filter 0.4s ease;
    display: block; 
    border-radius: 8px; 
}

.gallery-item:hover img {
    transform: scale(1.1);
    filter: brightness(0.8);
}

.gallery-item-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(0deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    color: #ffffff;
    padding: 20px 10px 10px 10px;
    font-size: 0.9rem;
    font-weight: bold;
    transform: translateY(100%);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.gallery-item:hover .gallery-item-caption {
    transform: translateY(0);
    opacity: 1;
}

.lightbox-modal {
    display: none; 
    position: fixed;
    z-index: 2000;
    padding-top: 50px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.5s;
}

.lightbox-content {
    margin: auto;
    display: block;
    width: auto;
    max-width: 85%;
    max-height: 80vh;
    border-radius: 5px;
    animation: zoomIn 0.5s;
}

.lightbox-caption {
    margin: 20px auto 0 auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    font-size: 1.1rem;
    line-height: 1.6;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.lightbox-close:hover,
.lightbox-close:focus {
    color: #bbb;
    text-decoration: none;
}

.lightbox-prev,
.lightbox-next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -22px;
    color: white;
    font-weight: bold;
    font-size: 24px;
    transition: 0.3s ease;
    border-radius: 0 3px 3px 0;
    user-select: none;
    background-color: rgba(0, 0, 0, 0.3);
    border: none;
    z-index: 2100;
}

.lightbox-prev {
    left: 15px;
    border-radius: 3px 0 0 3px;
}

.lightbox-next {
    right: 15px;
    border-radius: 0 3px 3px 0;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.lightbox-prev.hidden,
.lightbox-next.hidden {
    display: none;
}


@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes zoomIn {
    from { transform: scale(0.8); }
    to { transform: scale(1); }
}


@media (max-width: 380px) {
    .header-controls {
        gap: 8px; 
    }
    .language-switcher button {
        padding: 5px 6px;
    }
    .photo-gallery {
        column-count: 2;
    }
}


.cv-preview-wrapper {
    width: 280px; 
    margin: 30px auto; 
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.3s ease;
}
.cv-preview-wrapper:hover {
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.cv-preview-image-link {
    display: block; 
    line-height: 0; 
}
.cv-preview-image {
    width: 100%;
    height: auto;
    display: block; 
    transition: opacity 0.3s ease;
}
.cv-preview-image-link:hover .cv-preview-image {
    opacity: 0.8;
}

.btn-download-full-width { 
    display: block; 
    width: 100%;
    background-color: var(--accent-color);
    color: #111;
    padding: 12px 15px; 
    border-radius: 0 0 8px 8px;
    text-decoration: none;
    font-weight: bold;
    margin: 0; 
    transition: background-color 0.3s, color 0.3s;
    box-sizing: border-box;
}
.btn-download-full-width:hover {
    background-color: #ffda6a; 
    text-decoration: none;
    color: #111;
}