/* Reset e estilos globais */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #1a3a5c;
    --secondary-blue: #2c5f8d;
    --light-blue: #4a90c5;
    --dark-navy: #0d1f35;
    --light-gray: #f2f2f2;
    --medium-gray: #666;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-navy);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header e Navbar */
header {
    background-color: var(--dark-navy);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--light-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--light-blue);
}

.nav-menu a.admin-link {
    background-color: var(--secondary-blue);
    color: var(--white);
}

.nav-menu a.admin-link:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--primary-blue) 50%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 4px;
}

/* Page Header */
.page-header {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.2rem;
    color: var(--light-gray);
}

/* Content Section */
.content-section {
    padding: 3rem 0;
}

.content-block {
    margin-bottom: 3rem;
}

.content-block h2 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 2rem;
}

.content-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--medium-gray);
}

.content-image {
    max-width: 100%;
    height: auto;
    margin-top: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px var(--shadow);
}

/* Features Grid */
.features {
    background-color: var(--light-gray);
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    color: var(--primary-blue);
    font-size: 2.2rem;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px var(--shadow);
}

.feature-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* Project Preview on Home */
.project-preview {
    display: flex;
    flex-direction: column;
}

.project-preview-image {
    width: 100%;
    height: 200px;
    margin: -2rem -2rem 1rem -2rem;
    overflow: hidden;
    border-radius: 8px 8px 0 0;
}

.project-preview-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-preview p {
    flex-grow: 1;
    margin-bottom: 1rem;
}

.btn-link-sm {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--secondary-blue);
    color: var(--white);
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.3s;
    align-self: flex-start;
}

.btn-link-sm:hover {
    background-color: var(--primary-blue);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px var(--shadow);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

/* Members Grid */
.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.member-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 4px 6px var(--shadow);
    text-align: center;
    transition: transform 0.3s;
}

.member-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px var(--shadow);
}

.member-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 4px solid var(--secondary-blue);
}

.member-photo-placeholder {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background-color: var(--secondary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 3rem;
    color: var(--white);
    font-weight: bold;
}

.member-info h3 {
    color: var(--dark-navy);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.member-role {
    color: var(--secondary-blue);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.member-bio {
    color: var(--medium-gray);
    margin-bottom: 0.75rem;
}

.member-email a {
    color: var(--secondary-blue);
    text-decoration: none;
}

.member-email a:hover {
    text-decoration: underline;
}

/* Photos Grid */
.photos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.photo-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s;
}

.photo-card:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 12px var(--shadow);
}

.photo-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.photo-info {
    padding: 1rem;
}

.photo-info h4 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.photo-info p {
    color: var(--medium-gray);
    font-size: 0.9rem;
}

/* Publications List */
.publications-list {
    max-width: 900px;
    margin: 0 auto;
}

.year-divider {
    color: var(--primary-blue);
    font-size: 2rem;
    margin: 3rem 0 2rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--secondary-blue);
}

.publication-card {
    background-color: var(--white);
    border-left: 4px solid var(--secondary-blue);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.publication-card:hover {
    transform: translateX(5px);
    box-shadow: 0 6px 12px var(--shadow);
}

.publication-header {
    margin-bottom: 1rem;
}

.publication-type {
    display: inline-block;
    background-color: var(--light-blue);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.publication-header h3 {
    color: var(--dark-navy);
    font-size: 1.3rem;
    margin-top: 0.5rem;
    line-height: 1.4;
}

.publication-authors {
    color: var(--medium-gray);
    font-style: italic;
    margin-bottom: 0.5rem;
}

.publication-venue {
    color: var(--dark-navy);
    margin-bottom: 1rem;
}

.publication-abstract {
    margin: 1rem 0;
}

.publication-abstract details {
    background-color: var(--light-gray);
    padding: 1rem;
    border-radius: 4px;
}

.publication-abstract summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--primary-blue);
    user-select: none;
}

.publication-abstract summary:hover {
    color: var(--secondary-blue);
}

.publication-abstract p {
    margin-top: 1rem;
    line-height: 1.6;
    text-align: justify;
}

.publication-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.btn-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--secondary-blue);
    color: var(--white);
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-link:hover {
    background-color: var(--primary-blue);
}

.bibtex-container {
    margin-top: 1rem;
    background-color: var(--light-gray);
    padding: 1rem;
    border-radius: 4px;
    position: relative;
}

.bibtex-container pre {
    margin: 0;
    overflow-x: auto;
    background-color: var(--dark-navy);
    color: var(--light-gray);
    padding: 1rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

.bibtex-container code {
    font-family: 'Courier New', monospace;
}

.btn-copy {
    margin-top: 0.5rem;
    padding: 0.4rem 0.8rem;
    background-color: var(--light-blue);
    color: var(--white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.btn-copy:hover {
    background-color: var(--secondary-blue);
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--primary-blue) 50%, var(--secondary-blue) 100%);
}

.login-box {
    background-color: var(--white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo img {
    height: 80px;
}

.login-box h2 {
    text-align: center;
    color: var(--dark-navy);
    margin-bottom: 2rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark-navy);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary-blue);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: var(--secondary-blue);
    color: var(--white);
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--primary-blue);
}

.btn-danger {
    background-color: #dc3545;
    color: var(--white);
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.alert-error {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

/* Empty Message */
.empty-message {
    text-align: center;
    color: var(--medium-gray);
    font-size: 1.1rem;
    padding: 3rem;
}

/* Login Footer */
.login-footer {
    margin-top: 1.5rem;
    text-align: center;
}

.login-footer a {
    color: var(--secondary-blue);
    text-decoration: none;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    background-color: var(--dark-navy);
    color: var(--light-gray);
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
        text-align: center;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .features-grid,
    .projects-grid,
    .members-grid,
    .photos-grid {
        grid-template-columns: 1fr;
    }
}