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

:root {
    --primary: #c8aa6e;
    --primary-dark: #a6844c;
    --primary-light: #dcc684;
    --secondary: #0f1419;
    --secondary-light: #1e2328;
    --accent: #cdbe91;
    --accent-dark: #b8a66b;
    
    --background: #010a13;
    --background-light: #0f1419;
    --background-card: #1e2328;
    --background-hover: #323741;
    
    --text-primary: #f0e6d2;
    --text-secondary: #a09b8c;
    --text-muted: #5bc0de;
    
    --border: #463714;
    --border-light: #c8aa6e40;
    
    --success: #0ad406;
    --warning: #f0ad4e;
    --danger: #d9534f;
    --info: #5bc0de;
    
    --easy: #00c851;
    --medium: #ffbb33;
    --hard: #ff4444;
    --extreme: #cc0000;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
    
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Monaco', 'Menlo', monospace;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

[data-theme="light"] {
    --background: #f0e6d2;
    --background-light: #c8aa6e;
    --background-card: #ffffff;
    --background-hover: #e5ddc8;
    
    --text-primary: #1e2328;
    --text-secondary: #3c3c41;
    --text-muted: #1e2328;
    
    --border: #c8aa6e;
    --border-light: #c8aa6e80;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
    overflow-x: hidden;
    transition: background-color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-light);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-container {
    text-align: center;
}

.jax-icon-loading {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-xl);
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    animation: pulse 2s infinite;
}

.champion-icon-loading {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--primary);
}

.loading-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.loading-bar {
    width: 300px;
    height: 6px;
    background: var(--background-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-lg);
    animation: loading 2s ease-in-out infinite;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--background)95;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: var(--background);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary);
}

.brand-accent {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--background-hover);
    transform: translateY(-2px);
}

.nav-link.active {
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(200, 170, 110, 0.3);
    border: 1px solid var(--primary-light);
}

.nav-link.active .nav-icon {
    color: var(--background);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.nav-link.active::after {
    display: none;
}

.nav-link:not(.active):hover {
    background: var(--background-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(200, 170, 110, 0.15);
}

@media (max-width: 768px) {
    .nav-link.active {
        margin: 0.25rem 0;
        border-radius: var(--radius-md);
    }
}

.nav-icon {
    font-size: 1.1rem;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--background-card);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--background-hover);
    transform: scale(1.05);
}

.language-toggle {
    position: relative;
    display: inline-block;
}

.language-btn {
    width: 60px;
    height: 44px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--background-card);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-size: 0.875rem;
    font-weight: 500;
}

.language-btn:hover {
    background: var(--background-hover);
    transform: scale(1.05);
}

.language-icon {
    font-size: 1rem;
}

.language-text {
    font-size: 0.75rem;
    font-weight: 600;
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--background-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
    min-width: 140px;
}

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

.language-option {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: none;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    text-align: left;
}

.language-option:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.language-option:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

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

.language-option.active {
    background: var(--primary);
    color: var(--text-inverse);
}

.language-option.active:hover {
    background: var(--primary-dark);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    width: 44px;
    height: 44px;
    border: none;
    background: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-md);
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
    transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.main-content {
    margin-top: 80px;
}

.section {
    min-height: 100vh;
    padding: var(--spacing-3xl) 0;
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-slow);
}

.section.active-section {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

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

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

.btn-secondary {
    background: var(--background-card);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

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

/* Cards */
.card {
    background: var(--background-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

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

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.card:hover::before {
    transform: scaleX(1);
}

@media (max-width: 1024px) {
    .section-container,
    .hero-container {
        padding: 0 var(--spacing-md);
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    h1 { font-size: 3rem; }
    h2 { font-size: 2rem; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--background);
        flex-direction: column;
        padding: var(--spacing-lg);
        border-top: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-description {
        font-size: 1.125rem;
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--spacing-sm);
    }
    
    .section-container,
    .hero-container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    h1 { font-size: 2rem; }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

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

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

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

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }
.invisible { opacity: 0; }
.visible { opacity: 1; }

html {
    scroll-behavior: smooth;
}

.section {
    display: none;
}

.section.active-section,
.hero-section.active-section {
    display: block;
}

.hero-section {
    display: block;
}

.hero-section:not(.active-section) {
    display: none;
}

.nav-link {
    transition: all 0.3s ease;
}