/* Variáveis CSS para tema claro */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --background: #ffffff;
    --background-alt: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --border-radius: 12px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --header-height: 72px;
}

/* Variáveis CSS para tema escuro */
[data-theme="dark"] {
    --primary-color: #818cf8;
    --secondary-color: #a78bfa;
    --accent-color: #22d3ee;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --background: #111827;
    --background-alt: #1f2937;
    --border-color: #374151;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* Reset e configurações base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    transition: background-color 0.3s ease, color 0.3s ease;
    padding-top: calc(var(--header-height) + env(safe-area-inset-top));
}

img, svg, video { max-width: 100%; height: auto; }

/* Layout principal */
.portfolio-layout {
    min-height: 100vh;
}

/* Theme Toggle Button (in-header) */
.theme-toggle {
    background: var(--background-alt);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-primary);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
    transition: transform 0.2s ease, background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.theme-toggle:hover {
    transform: translateY(-2px);
    background: var(--background);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: background-color 0.3s ease, box-shadow 0.2s ease, border-color 0.3s ease;
}

[data-theme="dark"] .header {
    background: rgba(17, 24, 39, 0.9);
}

.header.scrolled {
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-brand a {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s ease;
    position: relative;
}

.nav-links a:after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -6px;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
    border-radius: 1px;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
}

.nav-links a:hover:after,
.nav-links a.active:after {
    transform: scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    background: transparent;
    border: 0;
    padding: 0.25rem;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 2rem;
    background: linear-gradient(135deg, var(--background) 0%, var(--background-alt) 100%);
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

/* Subtle entrance animations */
.hero-text > * { opacity: 0; animation: slideUp 0.6s ease forwards; }
.hero-text h1 { animation-delay: 0.05s; }
.hero-text h2 { animation-delay: 0.15s; }
.hero-text .hero-description { animation-delay: 0.25s; }
.hero-text .hero-buttons { animation-delay: 0.35s; }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-text h1 {
    font-size: clamp(1.75rem, 4vw + 1rem, 3rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
    line-height: 1.1;
}

.hero-text h2 {
    font-size: clamp(1rem, 1vw + 0.9rem, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    font-weight: 500;
}

.highlight {
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-placeholder {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    padding: 6px;
}

.profile-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    display: block;
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.25rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.3s ease, color 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
}

.btn-outline:hover {
    background: var(--background-alt);
    transform: translateY(-1px);
}

/* Seções */
section {
    padding: 5rem 2rem;
    scroll-margin-top: 90px; /* account for fixed header when jumping to anchors */
}

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

section h2 {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2.25rem;
    color: var(--text-primary);
}

/* About Section */
.about {
    background: var(--background-alt);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.about-text, .skills-column {
    display: flex;
    flex-direction: column;
    gap: 2.25rem;
}

/* Titles */
.formation h3, .community h3, .skills h3, .languages h3, .certifications h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

/* Formation & Certifications Section */
.formation h3, .community h3, .skills h3, .languages h3, .certifications h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.formation-grid, .community-grid, .languages-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.formation-item, .community-item, .language-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.formation-item:hover, .community-item:hover, .language-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.formation-icon, .community-icon, .language-icon {
    font-size: 1.75rem;
    flex-shrink: 0;
    width: 40px;
    text-align: center;
}

.formation-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1.5rem;
}

.certification-item a {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    text-decoration: none;
    height: 100%;
}

.certification-item a:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    color: var(--primary-color);
}

.certification-badge {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 8px;
}

.certification-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.certification-item a:hover .certification-name {
    color: var(--primary-color);
}


.community-content h4, .language-content h4 {
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.community-content p, .language-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-2px);
}

.skill-icon {
    font-size: 1.5rem;
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.project-card {
    background: var(--background);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

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

.project-image {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.project-icon {
    font-size: 3rem;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
}

.project-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: var(--background-alt);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.project-links {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

/* Contact Section */
.contact {
    background: var(--background-alt);
}

.contact-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-2px);
}

.contact-icon {
    font-size: 2rem;
}

.contact-item h4 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
    word-break: break-all;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    background: var(--background);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.contact-form h3 {
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-size: 1.75rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: var(--background);
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

.validation-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Skills Dropdown Styles */
.skills-dropdown-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.skill-category {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s ease;
}

.skill-category:hover {
    box-shadow: var(--shadow-lg);
}

.skill-category-header {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--background-alt);
    border: none;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-category-header:hover {
    background: var(--primary-color);
    color: white;
}

.skill-category-header:hover .category-icon,
.skill-category-header:hover .dropdown-arrow {
    color: white;
}

.category-icon {
    font-size: 1.25rem;
    margin-right: 0.75rem;
    transition: color 0.3s ease;
}

.category-title {
    flex: 1;
    text-align: left;
}

.dropdown-arrow {
    font-size: 0.875rem;
    transition: transform 0.3s ease, color 0.3s ease;
    color: var(--text-secondary);
}

.skill-category-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.25rem;
}

.skill-category-content.active {
    max-height: 500px;
    padding: 1.25rem;
}

.skill-category.active .dropdown-arrow {
    transform: rotate(180deg);
}

.skill-category.active .skill-category-header {
    border-bottom-color: var(--primary-color);
}

/* Ajustar o grid das skills dentro do dropdown */
.skill-category-content .skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.skill-category-content .skill-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--background-alt);
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.skill-category-content .skill-item:hover {
    transform: translateX(5px);
    background: var(--background);
    border-color: var(--primary-color);
}

/* Community Dropdown Styles */
.community-dropdown-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.community-category {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s ease;
}

.community-category:hover {
    box-shadow: var(--shadow-lg);
}

.community-category-header {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--background-alt);
    border: none;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.community-category-header:hover {
    background: var(--primary-color);
    color: white;
}

.community-category-header:hover .category-icon,
.community-category-header:hover .dropdown-arrow {
    color: white;
}

.community-category-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.25rem;
}

.community-category-content.active {
    max-height: 500px;
    padding: 1.25rem;
}

.community-category.active .dropdown-arrow {
    transform: rotate(180deg);
}

.community-category.active .community-category-header {
    border-bottom-color: var(--primary-color);
}

/* Ajustar o grid das community items dentro do dropdown */
.community-category-content .community-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.community-category-content .community-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--background-alt);
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.community-category-content .community-item:hover {
    transform: translateX(5px);
    background: var(--background);
    border-color: var(--primary-color);
}

/* Modern Languages Section - Inspired by top portfolios */
.languages-modern {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.language-item-modern {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.language-item-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: transform 0.3s ease;
    transform-origin: bottom;
}

.language-item-modern:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.language-item-modern:hover::before {
    transform: scaleY(1);
}

.language-header-modern {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.language-flag {
    font-size: 1.5rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.language-details h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.fluency-level {
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.fluency-level.native {
    color: #059669;
    background: rgba(5, 150, 105, 0.1);
}

.fluency-level.advanced {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.fluency-level.basic {
    color: #0891b2;
    background: rgba(8, 145, 178, 0.1);
}

.proficiency-bar {
    height: 4px;
    background: var(--background-alt);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 1rem;
    position: relative;
}

.proficiency-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    width: 0;
    position: relative;
}

.proficiency-fill::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 2px;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 1px;
}

.native-fill {
    background: linear-gradient(90deg, #059669, #10b981);
}

.advanced-fill {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.basic-fill {
    background: linear-gradient(90deg, #0891b2, #06b6d4);
}

.language-context {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.context-tag {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    background: var(--background-alt);
    color: var(--text-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.context-tag.studying {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.1), rgba(6, 182, 212, 0.1));
    color: #0891b2;
    border-color: rgba(8, 145, 178, 0.3);
    position: relative;
    overflow: hidden;
}

.context-tag.studying::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(8, 145, 178, 0.2), transparent);
    animation: studyingPulse 2s infinite;
}

@keyframes studyingPulse {
    0% { left: -100%; }
    100% { left: 100%; }
}

.language-item-modern:hover .context-tag {
    transform: translateY(-1px);
    border-color: var(--primary-color);
    color: var(--text-primary);
}

/* Languages Dropdown Styles */
.languages-dropdown-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.language-category {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s ease;
}

.language-category:hover {
    box-shadow: var(--shadow-lg);
}

.language-category-header {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--background-alt);
    border: none;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.language-category-header:hover {
    background: var(--primary-color);
    color: white;
}

.language-category-header:hover .category-icon,
.language-category-header:hover .dropdown-arrow {
    color: white;
}

.language-category-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.25rem;
}

.language-category-content.active {
    max-height: 800px;
    padding: 1.25rem;
}

.language-category.active .dropdown-arrow {
    transform: rotate(180deg);
}

.language-category.active .language-category-header {
    border-bottom-color: var(--primary-color);
}

/* Ajustar o conteúdo das languages dentro do dropdown */
.language-category-content .languages-modern {
    gap: 1rem;
}

.language-category-content .language-item-modern {
    margin-bottom: 0;
}

/* Projects Dropdown Styles */
.projects-dropdown-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.project-category {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s ease;
}

.project-category:hover {
    box-shadow: var(--shadow-lg);
}

.project-category-header {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: var(--background-alt);
    border: none;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.project-category-header:hover {
    background: var(--primary-color);
    color: white;
}

.project-category-header:hover .category-icon,
.project-category-header:hover .dropdown-arrow {
    color: white;
}

.project-category-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 1.5rem;
}

.project-category-content.active {
    max-height: 1200px;
    padding: 1.5rem;
}

.project-category.active .dropdown-arrow {
    transform: rotate(180deg);
}

.project-category.active .project-category-header {
    border-bottom-color: var(--primary-color);
}

/* Enhanced Project Cards */
.project-card {
    background: var(--background);
    border-radius: var(--border-radius);
    padding: 0;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.project-card.featured {
    border: 2px solid var(--primary-color);
    position: relative;
}

.project-card.featured::before {
    content: '⭐ Destaque';
    position: absolute;
    top: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-bottom-left-radius: var(--border-radius);
    z-index: 1;
}

.project-image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    background: var(--background-alt);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    height: 120px;
}

.project-icon {
    font-size: 3rem;
    transition: transform 0.3s ease;
}

.project-card:hover .project-icon {
    transform: scale(1.1);
}

.project-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.production {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.3);
}

.status-badge.development {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.3);
}

.status-badge.concept {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.3);
}

.project-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.project-content h3 {
    font-size: 1.375rem;
    margin: 0;
    color: var(--text-primary);
    font-weight: 700;
}

.project-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.project-metrics {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.metric {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--background-alt);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.metric-icon {
    font-size: 0.875rem;
}

.metric-text {
    font-size: 0.8rem;
    font-weight: 600;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: var(--background-alt);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.tech-tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.project-links {
    display: flex;
    gap: 0.75rem;
    margin-top: auto;
    padding-top: 1rem;
}

/* Contact Section Enhanced Styles */
.contact-dropdown-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-category {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s ease;
}

.contact-category-header {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: var(--background-alt);
    border: none;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-category-header:hover {
    background: var(--primary-color);
    color: white;
}

.contact-category-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 1.5rem;
}

.contact-category-content.active {
    max-height: 1500px;
    padding: 1.5rem;
}

.contact-category.active .dropdown-arrow {
    transform: rotate(180deg);
}

/* Contact Cards */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.contact-card {
    background: var(--background-alt);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.contact-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.contact-card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
    animation: pulse 2s infinite;
}

/* Modern Form */
.contact-form-modern {
    background: var(--background-alt);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.input-wrapper {
    position: relative;
}

.btn-submit {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 12px;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

/* Opportunities */
.opportunities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.opportunity-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.opportunity-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Talks & Presentations photo reveal */
.speaking-photo {
    margin: 0 0 1rem 0;
}

.speaking-photo-frame {
    position: relative;
    width: 100%;
    max-width: 720px;
    aspect-ratio: 16 / 9;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.08));
}

.speaking-photo-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transform: scale(1.06);
    filter: blur(10px) saturate(1.05);
    opacity: 0;
    transition: transform 600ms cubic-bezier(.2,.7,.3,1),
                filter 600ms cubic-bezier(.2,.7,.3,1),
                opacity 350ms ease-out;
}

/* Reveal when dropdown opens (or JS toggles .revealed) */
.community-category-content.active .speaking-photo-img,
.speaking-photo-frame.revealed .speaking-photo-img {
    transform: scale(1);
    filter: blur(0);
    opacity: 1;
}

@media (max-width: 768px) {
    :root { --header-height: 64px; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-text h2 {
        font-size: 1.25rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    section {
        padding: 3rem 1rem;
    }
    
    .navbar {
        padding: 1rem;
    }
    
    .profile-placeholder {
        width: 200px;
        height: 200px;
        font-size: 5rem;
    }
    
    .theme-toggle {
        right: 1rem;
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
    
    .formation-item, .community-item, .language-item {
        padding: 1rem;
        gap: 0.75rem;
    }
    
    .formation-name {
        font-size: 0.85rem;
    }
    
    .community-content h4, .language-content h4 {
        font-size: 1rem;
    }
    
    .community-content p, .language-content p {
        font-size: 0.9rem;
    }
    
    .project-card {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-text h2 {
        font-size: 1.125rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    section h2 {
        font-size: 2rem;
    }
    
    .project-links {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .formation-item,
    .skill-item {
        padding: 0.75rem;
    }
    
    .theme-toggle {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* Scroll suave */
html {
    scroll-behavior: smooth;
}

/* Efeitos de hover suaves */
a, button {
    transition: all 0.3s ease;
}

/* Estilo para validação */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
    font-size: 0.8rem;
}

/* Responsive navigation */
@media (max-width: 900px) {
    .nav-links {
        position: absolute;
        top: 100%;
        right: 1rem;
        left: 1rem;
        background: var(--background);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        box-shadow: var(--shadow);
        padding: 0.75rem;
        display: none;
        flex-direction: column;
        gap: 0.5rem;
    }
    .nav-links.open { display: flex; }
    .nav-toggle { display: flex; }
}

/* Accessible focus outlines */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible,
.theme-toggle:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* About responsive adjustments */
@media (max-width: 992px) {
    .about-content { grid-template-columns: 1fr; gap: 2rem; }
}

/* Ensure nav dropdown overlays content properly */
@media (max-width: 900px) {
    .nav-links {
        z-index: 1001;
    }
}