/**
 * CSS Custom Properties (Variables)
 * Global variables for consistent styling across the application
 */
:root {
    /* Main Colors */
    --primary-color: #2563eb;
    --secondary-color: #33a539;
    --success-color: #197a21;
    --text-color: #1f2937;
    --text-light: #4b5563;
    --background-color: #f8fafc;
    --box-background: #ffffff;
    --box-shadow: 0 4px 4px -1px rgba(0, 0, 0, 0.08), 0 2px 2px -1px rgba(0, 0, 0, 0.06);
    
    /* Dark Theme Colors */
    --dark-background: #222020;
    --dark-box-background: #333435;
    --dark-text: #f1f5f9;
    --dark-text-secondary: #94a3b8;
    
    /* Spacing Scale */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 40px;
    
    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 15px;
    --border-radius-full: 50%;
    
    /* Animation */
    --transition-speed: 0.3s;
}

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

body {
    min-height: 100vh;
    background-color: var(--background-color);
    font-family: 'Ubuntu', sans-serif;
    overflow-x: hidden;
    position: relative;
    transition: background-color var(--transition-speed) ease;
    padding-top: var(--spacing-md);
}

/**
 * Background Animation
 * Animated code symbols in the background
 */
.background-codes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.background-codes span {
    position: absolute;
    color: rgba(0, 0, 0, 0.08);
    font-size: 2.5rem;
    animation: float 20s linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) rotate(360deg);
        opacity: 0;
    }
}

.background-codes span:nth-child(1) { left: 5%; animation-duration: 15s; font-size: 4rem; }
.background-codes span:nth-child(2) { left: 20%; animation-duration: 18s; font-size: 3rem; }
.background-codes span:nth-child(3) { left: 35%; animation-duration: 10s; font-size: 5rem; }
.background-codes span:nth-child(4) { left: 50%; animation-duration: 20s; font-size: 3.5rem; }
.background-codes span:nth-child(5) { left: 65%; animation-duration: 22s; font-size: 4.5rem; }
.background-codes span:nth-child(6) { left: 80%; animation-duration: 14s; font-size: 5.5rem; }
.background-codes span:nth-child(7) { left: 90%; animation-duration: 25s; font-size: 3rem; }

/**
 * Main Container
 * Primary content wrapper with centered layout
 */
.box {
    max-width: 700px;
    text-align: center;
    z-index: 1;
    position: relative;
    width: 100%;
    margin: var(--spacing-md);
    padding: var(--spacing-lg);
    transition: background-color var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
}

/**
 * Single Page Sections
 * Main sections for the single-page layout
 */
.home-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.portfolio-section {
    min-height: 100vh;
    padding: var(--spacing-lg) 0;
    background-color: var(--background-color);
    position: relative;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}


/**
 * Error 404 Page
 * Styles for the 404 error page layout
 */
.error-container {
    text-align: center;
    padding: 2rem;
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.error-container h1 {
    font-size: 4rem;
    margin: 0;
    color: #c02716;
}
.error-container p {
    font-size: 1.2rem;
    margin: 1rem 0;
}
.error-container a {
    color: #3498db;
    text-decoration: none;
}
.error-container a:hover {
    text-decoration: underline;
}

/**
 * Global Smooth Scroll
 * Enable smooth scrolling behavior for the entire page
 */
html {
    scroll-behavior: smooth;
}

/**
 * Profile Image
 * Styles for the circular profile image with hover effect
 */
.profile-image {
    border-radius: var(--border-radius-full);
    width: 180px;
    height: 180px;
    object-fit: cover;
    margin-bottom: var(--spacing-md);
    transition: transform var(--transition-speed) ease;
}

.profile-image:hover {
    transform: scale(1.05);
}

/**
 * Typography
 * Global text styles and heading hierarchy
 */
h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
    transition: color var(--transition-speed) ease;
}

h2 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
    font-weight: normal;
    transition: color var(--transition-speed) ease;
}

p {
    font-size: 1.05rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
    transition: color var(--transition-speed) ease;
}

/**
 * Skills and Badges
 * Styling for skill tags and badge components
 */
.skills {
    margin: var(--spacing-md) 0;
}

.badge {
    background-color: var(--primary-color);
    color: var(--box-background);
    margin: var(--spacing-xs);
    padding: 8px var(--spacing-sm);
    border-radius: var(--border-radius-lg);
    font-size: 0.8rem;
    transition: opacity var(--transition-speed) ease,
                transform var(--transition-speed) ease;
}

.badge:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/**
 * Buttons
 * Global button styles and variations
 */
.btn-port {
    background-color: var(--secondary-color);
    color: var(--box-background);
    padding: 8px var(--spacing-sm) !important;
    border-radius: var(--border-radius-lg);
    font-size: 0.8rem;
    font-weight: 600;
    margin: 0 var(--spacing-md) var(--spacing-md) var(--spacing-md);
    transition: opacity var(--transition-speed) ease,
                transform var(--transition-speed) ease;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.btn-port:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* Navigation specific buttons */
.scroll-to-portfolio,
.scroll-to-home {
    background-color: var(--success-color);
    margin: var(--spacing-md) 0;
}

.scroll-to-portfolio:hover,
.scroll-to-home:hover {
    background-color: var(--secondary-color);
}

/* Social Icons */
.social-icons a {
    color: var(--text-color);
    margin: 0 var(--spacing-sm);
    font-size: 1.8rem;
    text-decoration: none;
    transition: color var(--transition-speed) ease,
                transform var(--transition-speed) ease;
}

.social-icons a:hover {
    color: var(--primary-color);
    text-decoration: none;
    transform: translateY(-3px);
}

/* Ensure social icons never have underline */
.social-icons a,
.social-icons a:hover,
.social-icons a:focus,
.social-icons a:active,
.social-icons a:visited {
    text-decoration: none !important;
}

/* Old theme button styles removed - now in .header-controls */

/**
 * Portfolio Styles
 * Styles for portfolio section and cards
 */
.portfolio-header {
    width: 100%;
    padding-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.portfolio-section .portfolio-header {
    padding-top: 0;
}

.header-top {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.header-title {
    text-align: center;
    flex-grow: 1;
}

.header-title h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
    font-weight: 700;
}

.header-title p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin: 0;
}

.portfolio-filters {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.search-box {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.search-box i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) calc(var(--spacing-md) * 2 + 16px);
    border: 2px solid var(--box-background);
    border-radius: var(--border-radius-md);
    background-color: var(--box-background);
    font-size: 1rem;
    color: var(--text-color);
    transition: all var(--transition-speed) ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.filter-tag {
    background: var(--box-background);
    color: var(--text-color);
    border: none;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.filter-tag:hover {
    background: var(--primary-color);
    color: white;
}

.filter-tag.active {
    background: var(--primary-color);
    color: white;
}

.btn-reset {
    background: var(--text-light);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-weight: 500;
}

.btn-reset:hover {
    opacity: 0.8;
}

.btn-reset i {
    margin-right: 5px;
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-light);
}

.no-results i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.no-results p {
    font-size: 1.2rem;
    margin: 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    margin-top: var(--spacing-lg);
}

.portfolio-card {
    background: var(--box-background);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed) ease;
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
}

.portfolio-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.portfolio-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, 0.02));
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

.portfolio-card:hover::after {
    opacity: 1;
}

.portfolio-card-image {
    position: relative;
    overflow: hidden;
    padding-top: 60%;
}

.portfolio-card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-speed) ease;
}

.portfolio-card:hover .portfolio-card-image img {
    transform: scale(1.05);
}

.portfolio-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: all var(--transition-speed) ease;
}

.portfolio-card:hover .portfolio-card-overlay {
    opacity: 1;
}

.view-details {
    color: white;
    font-weight: 500;
    font-size: 0.9rem;
    transform: translateY(20px);
    transition: transform var(--transition-speed) ease;
    background: var(--primary-color);
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
}

.portfolio-card:hover .view-details {
    transform: translateY(0);
}

.portfolio-card-content {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.portfolio-card-content h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.card-description {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tech-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.tech-tag {
    background: var(--primary-color);
    color: white;
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    font-size: 0.7rem;
    font-weight: 500;
    transition: transform var(--transition-speed) ease;
}

.tech-tag.more {
    background: var(--text-light);
}

.tech-tag:hover {
    transform: translateY(-2px);
}

/* Modal Styles */
.project-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed) ease;
}

.project-modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--box-background);
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    border-radius: var(--border-radius-md);
    position: relative;
    overflow: hidden;
    transform: translateY(20px);
    transition: transform var(--transition-speed) ease;
}

.project-modal.show .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 2;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    transition: all var(--transition-speed) ease;
}

.modal-close:hover {
    background: var(--primary-color);
    transform: rotate(90deg);
}

.modal-body {
    display: flex;
    flex-direction: column;
    max-height: 90vh;
}

.modal-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-speed) ease;
}

.modal-image img:hover {
    transform: scale(1.02);
}

.modal-info {
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.modal-info h2 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

.website-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    transition: color var(--transition-speed) ease;
}

.website-link:hover {
    color: var(--secondary-color);
}

.modal-info p {
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    color: var(--text-light);
}

.modal-info p a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    transition: color var(--transition-speed) ease;
}

.modal-info p a:hover {
    color: var(--secondary-color);
    text-decoration: none;
}

.modal-technologies h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

.modal-technologies .tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.portfolio-nav {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-lg);
}

body.dark-theme .portfolio-nav-bottom {
    border-top-color: rgba(255, 255, 255, 0.1);
}

/**
 * Dark Theme
 * Color overrides and specific styles for dark mode
 */
body.dark-theme {
    --background-color: var(--dark-background);
    --box-background: var(--dark-box-background);
    --text-color: var(--dark-text);
    --text-light: var(--dark-text-secondary);
    --box-shadow: 0 4px 8px rgba(255, 255, 255, 0.07);
}

/* Ensure badge text remains white in dark theme */
body.dark-theme .badge,
body.dark-theme .tech-tag, 
body.dark-theme .scroll-to-portfolio,
body.dark-theme .scroll-to-home {
    color: white;
}

/* Full Image Modal Styles */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed) ease;
}

.image-modal.show {
    opacity: 1;
    visibility: visible;
}

.image-modal-content {
    position: relative;
    max-width: 95vw;
    max-height: 95vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.image-modal-close {
    position: absolute;
    top: -50px;
    right: -10px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) ease;
    backdrop-filter: blur(10px);
    z-index: 2001;
}

.image-modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.full-image {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: transform var(--transition-speed) ease;
}

.image-modal-title {
    margin-top: 20px;
    color: white;
    font-size: 1.2rem;
    font-weight: 500;
    text-align: center;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    backdrop-filter: blur(10px);
}

/* Dark theme support for image modal */
body.dark-theme .image-modal-close {
    background: rgba(0, 0, 0, 0.3);
    color: var(--dark-text);
}

body.dark-theme .image-modal-close:hover {
    background: rgba(0, 0, 0, 0.5);
}

body.dark-theme .image-modal-title {
    background: rgba(0, 0, 0, 0.8);
    color: var(--dark-text);
}

body.dark-theme .carousel-caption-custom {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

body.dark-theme .background-codes span {
    color: rgba(255, 255, 255, 0.1);
}

/* Estilo antigo removido - agora está no .header-controls */

/**
 * Animated Portfolio Arrow
 * Bouncing arrow indicator for scrolling to portfolio
 */
.scroll-arrow {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-color);
    font-size: 2rem;
    animation: bounceArrow 2s infinite;
    cursor: pointer;
    transition: color var(--transition-speed) ease;
}

.scroll-arrow:hover {
    color: var(--primary-color);
}

@keyframes bounceArrow {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

body.dark-theme .scroll-arrow {
    color: var(--dark-text);
}

/**
 * Responsive Design
 * Media queries for different screen sizes
 */
@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        padding: var(--spacing-sm);
    }

    .modal-body {
        flex-direction: column;
    }

    .modal-image {
        height: 250px;
    }
    
    /* Responsive styles for image modal - tablets */
    .image-modal-close {
        top: -45px;
        right: -5px;
        width: 38px;
        height: 38px;
        font-size: 1.3rem;
    }
    
    .image-modal-title {
        font-size: 1.1rem;
        padding: 9px 18px;
        margin-top: 18px;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 20px;
    }

    body {
        padding-top: 0;
    }

    .home-section {
        min-height: 100vh;
        padding: var(--spacing-md) 0;
    }

    .portfolio-section {
        min-height: auto;
        padding: var(--spacing-lg) 0;
    }

    .header-top {
        padding: var(--spacing-md);
    }

    .header-title h1 {
        font-size: 2rem;
    }

    .header-title p {
        font-size: 1rem;
    }

    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        margin-top: var(--spacing-md);
    }

    .portfolio-card-content h3 {
        font-size: 1.1rem;
    }

    .card-description {
        font-size: 0.85rem;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }

    /* Adjust scroll-arrow for smaller resolutions */
    .scroll-arrow {
        bottom: 20px;
        font-size: 1.5rem;
        z-index: 10;
    }

    /* Estilo antigo removido - agora está no .header-controls */

    .search-box input {
        font-size: 0.9rem;
    }

    .filter-tag {
        font-size: 0.75rem;
        padding: 4px 10px;
    }

    .view-details {
        font-size: 0.85rem;
        padding: 6px 12px;
    }

    .modal-content {
        width: 95%;
    }

    .modal-info {
        padding: var(--spacing-md);
    }

    .modal-info h2 {
        font-size: 1.5rem;
    }

    .tech-tag {
        font-size: 0.65rem;
        padding: 2px 6px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 15px;
        --spacing-lg: 15px;
    }

    .portfolio-header {
        position: relative;
    }

    .header-title h1 {
        font-size: 1.8rem;
    }

    .header-title p {
        font-size: 0.9rem;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .portfolio-card-image {
        padding-top: 50%;
    }

    .filter-tags {
        gap: 5px;
    }

    .filter-tag {
        font-size: 0.7rem;
        padding: 3px 8px;
    }

    .search-box input {
        font-size: 0.85rem;
        padding: 8px 12px 8px 35px;
    }

    /* Additional scroll-arrow adjustment for very small screens */
    .scroll-arrow {
        bottom: 15px;
        font-size: 1.3rem;
    }

    .modal-image {
        height: 200px;
    }

    .modal-info h2 {
        font-size: 1.3rem;
    }
    
    /* Responsive styles for image modal */
    .image-modal-close {
        top: -40px;
        right: 0;
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }
    
    .image-modal-title {
        font-size: 1rem;
        padding: 8px 16px;
        margin-top: 15px;
    }

    .website-link {
        font-size: 0.9rem;
    }

    .modal-info p {
        font-size: 0.9rem;
    }

    .btn-port {
        font-size: 0.75rem;
        padding: 6px 12px;
    }

    .no-results i {
        font-size: 2.5rem;
    }

    .no-results p {
        font-size: 1rem;
    }

    .card-description {
        -webkit-line-clamp: 2;
        line-clamp: 2;
        font-size: 0.8rem;
    }

    .portfolio-card-content {
        padding: var(--spacing-sm);
    }
}

/**
 * Header Controls
 * Styles for header navigation and control elements
 */
.header-controls {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Ubuntu', sans-serif;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: var(--box-background);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-md);
    padding: 8px 12px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    box-shadow: var(--box-shadow);
    color: var(--text-color);
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
}

.theme-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.theme-toggle-btn i {
    transition: transform var(--transition-speed) ease;
}

/* Language Selector */
.language-selector {
    position: relative;
}

.language-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--box-background);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-md);
    padding: 8px 12px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    box-shadow: var(--box-shadow);
    min-width: 80px;
}

.language-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.language-toggle .current-flag {
    width: 20px;
    height: 15px;
    border-radius: 2px;
    object-fit: cover;
}

.language-toggle .current-lang {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
}

.language-toggle i {
    font-size: 0.7rem;
    color: var(--text-light);
    transition: transform var(--transition-speed) ease;
}

.language-toggle.active i {
    transform: rotate(180deg);
}

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--box-background);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-md);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-speed) ease;
    margin-top: 5px;
    min-width: 140px;
}

.language-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    text-decoration: none;
    color: var(--text-color);
    transition: background-color var(--transition-speed) ease;
    font-size: 0.9rem;
}

.language-option:hover {
    background-color: var(--background-color);
    color: var(--text-color);
}

.language-option img {
    width: 20px;
    height: 15px;
    border-radius: 2px;
    object-fit: cover;
}

/* Dark Theme - Header Controls */
body.dark-mode .theme-toggle-btn,
body.dark-mode .language-toggle,
body.dark-mode .language-menu {
    background: var(--dark-box-background);
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--dark-text);
}

body.dark-mode .language-toggle .current-lang,
body.dark-mode .language-option {
    color: var(--dark-text);
}

body.dark-mode .language-option:hover {
    background-color: var(--dark-background);
    color: var(--dark-text);
}

/* Responsiveness - Header Controls */
@media (max-width: 768px) {
    .header-controls {
        top: 15px;
        right: 15px;
        gap: 8px;
    }
    
    .theme-toggle-btn {
        min-width: 40px;
        height: 40px;
        padding: 6px 10px;
        font-size: 0.9rem;
    }
    
    .language-toggle {
        padding: 6px 10px;
        min-width: 70px;
    }
    
    .language-toggle .current-flag {
        width: 18px;
        height: 13px;
    }
    
    .language-option img {
        width: 18px;
        height: 13px;
    }
}