:root {
    /* Light Mode Colors */
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #d1fae5;
    --secondary: #8b5cf6;
    --accent: #f59e0b;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-bs-theme="dark"] {
    /* Dark Mode Colors */
    --primary: #10b981;
    --primary-dark: #34d399;
    --primary-light: #064e3b;
    
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    
    --border-color: #374151;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5);
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Fredoka', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
}

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

/* Navbar */
.navbar-custom {
    background-color: var(--bg-primary);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    transition: all var(--transition-base);
}

.navbar-brand {
    font-family: 'Fredoka', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform var(--transition-base);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

/* Logo Image */
.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition-base);
}

.navbar-brand:hover .logo-img {
    transform: scale(1.1);
}

.brand-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--primary);
    background-color: var(--primary-light);
}

/* Theme Toggle Button */
.theme-toggle-btn {
    position: relative;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    border: 2px solid var(--border-color);
    background-color: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.theme-toggle-btn:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
    transform: rotate(180deg);
}

.theme-icon-light {
    color: var(--accent);
    font-size: 1.25rem;
}

.theme-icon-dark {
    display: none;
    color: var(--primary);
    font-size: 1.25rem;
}

[data-bs-theme="dark"] .theme-icon-light {
    display: none;
}

[data-bs-theme="dark"] .theme-icon-dark {
    display: block;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite reverse;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-full);
    font-weight: 600;
    color: var(--primary);
    font-size: 0.875rem;
    animation: slideInDown 0.6s ease-out;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    animation: slideInUp 0.6s ease-out 0.1s both;
}

.hero-highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.8;
    animation: slideInUp 0.6s ease-out 0.2s both;
}

.hero-stats {
    animation: slideInUp 0.6s ease-out 0.3s both;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    border-radius: var(--radius-lg);
    background-color: var(--bg-secondary);
    transition: all var(--transition-base);
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    font-family: 'Fredoka', sans-serif;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Hero Image Container */
.hero-image-container {
    position: relative;
    animation: slideInRight 0.8s ease-out 0.3s both;
}

.hero-main-image {
    position: relative;
    z-index: 2;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.floating-card {
    position: absolute;
    width: 80px;
    height: 80px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-lg);
    z-index: 3;
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    left: -40px;
    color: var(--primary);
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: -40px;
    color: var(--secondary);
    animation-delay: 0.5s;
}

.card-3 {
    bottom: 10%;
    left: -20px;
    color: var(--accent);
    animation-delay: 1s;
}

/* Image Placeholder */
.image-placeholder {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius-lg);
}

.video-placeholder {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    min-height: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
}

.video-placeholder:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* Buttons */
.btn {
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Features Section */
.features-section {
    background-color: var(--bg-secondary);
    margin-top: -50px;
    position: relative;
    z-index: 10;
}

.feature-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
    height: 100%;
    box-shadow: var(--shadow-md);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary);
    transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Section Styles */
.section-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-full);
    font-weight: 600;
    color: var(--primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Characters Section */
.characters-section {
    padding: 5rem 0;
    background-color: var(--bg-primary);
}

.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    background-color: var(--bg-secondary);
    border: 2px solid transparent;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
}

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

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

/* Character Cards */
.character-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.character-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.character-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
}

.character-image .image-placeholder {
    min-height: auto;
    height: 100%;
    font-size: 3rem;
}

.character-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    backdrop-filter: blur(10px);
    color: white;
}

.badge-mario {
    background: rgba(239, 68, 68, 0.9);
}

.badge-disney {
    background: rgba(59, 130, 246, 0.9);
}

.badge-pokemon {
    background: rgba(234, 179, 8, 0.9);
}

.badge-otros {
    background: rgba(139, 92, 246, 0.9);
}

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

.character-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.character-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.btn-character {
    width: 100%;
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-character:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* How It Works Section */
.how-it-works-section {
    padding: 5rem 0;
    background-color: var(--bg-secondary);
}

.step-card {
    position: relative;
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--radius-xl);
    text-align: center;
    height: 100%;
    transition: all var(--transition-base);
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.5rem;
    color: white;
    box-shadow: var(--shadow-lg);
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 2rem auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary);
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.step-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Video Section */
.video-section {
    padding: 3rem 0;
}

.video-container {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.process-list {
    list-style: none;
    padding: 0;
}

.process-list li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.process-list li i {
    color: var(--primary);
    font-size: 1.25rem;
}

/* About Section */
.about-section {
    padding: 5rem 0;
    background-color: var(--bg-primary);
}

.about-image-container {
    position: relative;
}

.about-main-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-badge {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-weight: 700;
    color: var(--primary);
    box-shadow: var(--shadow-lg);
}

[data-bs-theme="dark"] .about-badge {
    background: rgba(31, 41, 55, 0.95);
}

.about-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.value-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.value-item i {
    font-size: 2rem;
    color: var(--primary);
    flex-shrink: 0;
}

.value-item h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.value-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Testimonials Section */
.testimonials-section {
    padding: 5rem 0;
    background-color: var(--bg-secondary);
}

.testimonial-card {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--radius-xl);
    height: 100%;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.testimonial-stars {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.testimonial-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.author-name {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.author-role {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin: 0;
}

/* Contact Section */
.contact-section {
    padding: 5rem 0;
    background-color: var(--bg-primary);
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-item h5 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.contact-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
}

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

.social-link {
    width: 50px;
    height: 50px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    transform: translateY(-5px);
}

/* Contact Form */
.contact-form-container {
    background-color: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

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

.form-control,
.form-select {
    padding: 0.875rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
    outline: none;
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-brand {
    display: flex;
    align-items: center;
    font-family: 'Fredoka', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.footer-brand .logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: all var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 0.5rem;
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
}

.footer-contact li i {
    color: var(--primary);
}

.footer-divider {
    border-color: var(--border-color);
    opacity: 0.3;
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
    justify-content: flex-end;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    transform: translateY(-3px);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-full);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* Animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

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

/* Character Item Animation */
.character-item {
    animation: fadeIn 0.6s ease-out both;
}

.character-item:nth-child(1) { animation-delay: 0.1s; }
.character-item:nth-child(2) { animation-delay: 0.15s; }
.character-item:nth-child(3) { animation-delay: 0.2s; }
.character-item:nth-child(4) { animation-delay: 0.25s; }
.character-item:nth-child(5) { animation-delay: 0.3s; }
.character-item:nth-child(6) { animation-delay: 0.35s; }
.character-item:nth-child(7) { animation-delay: 0.4s; }
.character-item:nth-child(8) { animation-delay: 0.45s; }

/* Hide filtered items */
.character-item.hide {
    display: none;
}

/* Responsive */
@media (max-width: 991px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .navbar-collapse {
        background-color: var(--bg-primary);
        padding: 1rem;
        border-radius: var(--radius-md);
        margin-top: 1rem;
        box-shadow: var(--shadow-md);
    }
    
    .logo-img {
        height: 45px;
    }
}

@media (max-width: 767px) {
    .hero-section {
        min-height: auto;
    }
    
    .logo-img {
        height: 40px;
    }
    
    .brand-text {
        font-size: 1.1rem;
    }
    
    .footer-brand .logo-img {
        height: 38px;
    }
    
    .category-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-btn {
        width: 100%;
        justify-content: center;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background-color: var(--primary);
    color: white;
}