:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #8b5cf6;
    --secondary-color: #f1f5f9;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --border-color-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 0.75rem;
    --border-radius-sm: 0.5rem;
    --border-radius-lg: 1.25rem;
    --border-radius-xl: 1.5rem;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-colors: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-base: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
}

/* Dark theme */
[data-theme="dark"] {
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --border-color: #334155;
    --border-color-light: #475569;
    --secondary-color: #334155;
}

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: var(--font-size-base);
    transition: var(--transition-colors);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Layout */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* Language Selector */
.language-selector {
    position: fixed;
    top: var(--spacing-lg);
    right: 5rem;
    z-index: 1000;
}

.current-language {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-base);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.current-language:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

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

.language-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-base);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    border-bottom: 1px solid var(--border-color-light);
}

.language-option:last-child {
    border-bottom: none;
}

.language-option:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
}

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

.flag {
    font-size: 1.2em;
}

.language-name {
    font-weight: 500;
}

#language-select {
    padding: var(--spacing-sm) var(--spacing-base);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    display: none; /* Hidden since we now use the dropdown */
}

#language-select:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

#language-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* How to Play Button */
.how-to-play-btn {
    position: fixed;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-base);
    border: none;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, var(--success-color), #16a34a);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.how-to-play-btn:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #059669, var(--success-color));
    box-shadow: var(--shadow-xl);
}

.how-to-play-btn:active {
    transform: translateY(0);
}

.how-to-play-btn:focus {
    outline: none;
    box-shadow: var(--shadow-xl), 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.how-to-play-btn i {
    font-size: var(--font-size-lg);
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 3.5rem;
    height: 3.5rem;
    border: none;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.theme-toggle:hover {
    transform: scale(1.05) translateY(-2px);
    background: var(--primary-dark);
    box-shadow: var(--shadow-xl);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle:focus {
    outline: none;
    box-shadow: var(--shadow-xl), 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
    padding-top: var(--spacing-3xl);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
}

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

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-xl) 0;
}

.header h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
}

.header p {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    font-weight: 300;
    margin-top: var(--spacing-base);
}

.welcome-message {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--primary-color);
    border-style: dashed;
}

.welcome-message p {
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: 500;
    margin: 0;
}

/* Section Headers and Descriptions */
.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-description {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    margin-top: var(--spacing-sm);
    font-style: italic;
}

.category-group-header {
    margin-bottom: var(--spacing-base);
}

.category-help {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    font-style: italic;
}

/* Tips and Help Text */
.tip {
    display: block;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-base);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(6, 182, 212, 0.1));
    border: 1px solid var(--success-color);
    border-radius: var(--border-radius-sm);
    color: var(--success-color);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.help-text {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    line-height: 1.4;
}

/* Setup Sections */
.setup-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.setup-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

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

.setup-section h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
    font-weight: 600;
}

/* Players Setup */
.player-count {
    margin-bottom: var(--spacing-lg);
}

.player-count label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.player-count input {
    width: 100%;
    max-width: 200px;
    padding: var(--spacing-base);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.player-count input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), var(--shadow);
    transform: translateY(-1px);
}

.players-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.player-input {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    padding: var(--spacing-base);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.player-input:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.player-input span {
    min-width: 4rem;
    font-weight: 600;
    color: var(--primary-color);
    font-size: var(--font-size-sm);
}

.player-input input {
    flex: 1;
    padding: var(--spacing-base);
    border: none;
    background: transparent;
    font-size: var(--font-size-base);
    color: var(--text-primary);
    transition: var(--transition);
}

.player-input input:focus {
    outline: none;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
}

/* Categories Setup */
.category-groups {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.category-group h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.category-group h3::before {
    content: '';
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, var(--primary-color), var(--primary-light));
    border-radius: 2px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-base);
}

.category-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-base);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: var(--font-size-sm);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.category-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.category-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.category-item:hover::before {
    left: 100%;
}

.category-item.selected {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.category-item.selected::before {
    display: none;
}

.category-item input[type="checkbox"] {
    margin: 0;
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.category-item.custom {
    position: relative;
}

.remove-category {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 0.25rem;
    transition: var(--transition);
}

.remove-category:hover {
    background: var(--danger-color);
    color: white;
}

.custom-category-input {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.custom-category-input input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.custom-category-input input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Settings */
.settings-grid {
    display: grid;
    gap: 1.5rem;
}

.setting label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.setting input[type="number"] {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.setting input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 1.2rem;
    height: 1.2rem;
    accent-color: var(--primary-color);
}

/* Number Input Groups */
.number-input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    max-width: 200px;
}

.number-input-group input[type="number"] {
    flex: 1;
    text-align: center;
    padding: var(--spacing-sm);
    min-width: 80px;
}

.number-input-group .btn-icon {
    flex-shrink: 0;
}

/* Form Groups */
.form-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-base);
}

.form-group input {
    flex: 1;
}

/* Setting Items */
.setting-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.setting-help {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

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

.checkbox-item input[type="checkbox"] {
    width: 1.2rem;
    height: 1.2rem;
    accent-color: var(--primary-color);
}

.checkbox-item label {
    margin-bottom: 0;
    cursor: pointer;
}

/* Buttons */
.btn {
    padding: var(--spacing-base) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    min-height: 3rem;
    position: relative;
    overflow: hidden;
    text-transform: capitalize;
    letter-spacing: 0.025em;
}

.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 0.5s ease;
}

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

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

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

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

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

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-small {
    padding: 0.5rem;
    font-size: 0.9rem;
    min-height: 2.5rem;
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
    min-height: 3.5rem;
}

.btn-icon {
    padding: var(--spacing-sm);
    min-height: 2.5rem;
    width: 2.5rem;
    font-size: var(--font-size-lg);
    font-weight: bold;
}

#start-game {
    display: block;
    margin: 2rem auto 0;
    font-size: var(--font-size-lg);
    padding: var(--spacing-base) var(--spacing-xl);
    max-width: 300px;
}

/* Game Screen */
.game-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color-light);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.game-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light), var(--primary-color));
}

.round-info {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-secondary);
    text-align: left;
}

.letter-display {
    text-align: center;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
}

.letter-display span:last-child {
    display: inline-block;
    width: 5rem;
    height: 5rem;
    line-height: 5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 50%;
    margin-left: var(--spacing-base);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-3xl);
    animation: letterPulse 2s ease-in-out infinite;
}

@keyframes letterPulse {
    0%, 100% { 
        transform: scale(1); 
        box-shadow: var(--shadow-lg);
    }
    50% { 
        transform: scale(1.05); 
        box-shadow: var(--shadow-xl);
    }
}

.timer-display {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-base);
    text-align: right;
}

.timer-circle {
    position: relative;
    width: 6rem;
    height: 6rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: white;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.timer-circle::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, var(--primary-color), var(--primary-light), var(--primary-color));
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.timer-circle:hover::before {
    opacity: 1;
}

.timer-circle.warning {
    background: linear-gradient(135deg, var(--warning-color), #fbbf24);
    animation: timerWarning 1s ease-in-out infinite;
}

.timer-circle.danger {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
    animation: timerDanger 0.5s ease-in-out infinite;
}

@keyframes timerWarning {
    0%, 100% { 
        transform: scale(1);
        box-shadow: var(--shadow-lg);
    }
    50% { 
        transform: scale(1.1);
        box-shadow: var(--shadow-xl);
    }
}

@keyframes timerDanger {
    0%, 100% { 
        transform: scale(1) rotate(0deg);
        box-shadow: var(--shadow-lg);
    }
    25% { 
        transform: scale(1.15) rotate(-2deg);
        box-shadow: var(--shadow-xl);
    }
    75% { 
        transform: scale(1.15) rotate(2deg);
        box-shadow: var(--shadow-xl);
    }
}

/* Timer Controls */
.timer-controls {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-base);
    flex-wrap: wrap;
}

.timer-controls .btn {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-base);
    min-height: 2.5rem;
}

.categories-display {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.categories-display h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.categories-display ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.categories-display li {
    padding: 1rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-weight: 500;
    text-align: center;
}

.game-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Scoring Screen */
.scoring-header {
    text-align: center;
    margin-bottom: 2rem;
}

.scoring-header h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.scoring-header .round-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

.round-number, .letter-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.round-number .label, .letter-info .label {
    font-weight: 500;
    color: var(--text-secondary);
}

.round-number .value, .letter-info .value {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.2rem;
}

.scoring-rules {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.scoring-rules h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.scoring-rules ul {
    list-style: none;
}

.scoring-rules-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.scoring-rule {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    transition: all 0.2s ease;
}

.scoring-rule:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.scoring-rule .rule-description {
    font-size: 1rem;
    line-height: 1.4;
}

.scoring-table {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    overflow-x: auto;
}

.scoring-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.scoring-player-section {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    transition: var(--transition);
}

.scoring-player-section:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.scoring-player-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.scoring-player-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.scoring-player-total {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--success-color);
}

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

.scoring-category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.scoring-category-name {
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    margin-right: 1rem;
}

.scoring-input {
    width: 100%;
    padding: 0.5rem;
    border: none;
    background: transparent;
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.scoring-input:focus {
    outline: none;
    background: var(--secondary-color);
    border-radius: 0.25rem;
}

/* Score buttons */
.score-buttons {
    display: flex;
    gap: 0.25rem;
    justify-content: center;
    width: 100%;
}

.score-btn {
    flex: 1;
    padding: 0.5rem 0.25rem;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    min-width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.score-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.score-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
    box-shadow: var(--shadow);
}

.score-btn.no-answer.active {
    background: var(--danger-color);
    border-color: var(--danger-color);
}

.score-btn.tied.active {
    background: var(--warning-color);
    border-color: var(--warning-color);
}

.score-btn.valid.active {
    background: var(--success-color);
    border-color: var(--success-color);
}

/* Responsive scoring */
@media (max-width: 768px) {
    .scoring-categories {
        grid-template-columns: 1fr;
    }
    
    .scoring-category-item {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .scoring-category-name {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }
    
    .score-btn {
        padding: 0.4rem 0.2rem;
        font-size: 1rem;
        min-width: 32px;
    }
    
    .scoring-grid {
        min-width: 400px;
    }
}

.scoring-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Results Screen */
.results-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 1rem 2rem;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.leaderboard {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.leaderboard-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.leaderboard-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.leaderboard-item.winner {
    border-color: var(--success-color);
    background: linear-gradient(135deg, var(--bg-primary), #ecfdf5);
}

.rank {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-right: 1rem;
    min-width: 3rem;
}

.rank.first {
    color: #fbbf24;
}

.rank.second {
    color: #94a3b8;
}

.rank.third {
    color: #cd7c2f;
}

.player-info {
    flex: 1;
}

.player-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.player-stats {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.total-score {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.round-history {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.history-round {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.history-scores {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.history-player {
    text-align: center;
    padding: 0.75rem;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
}

.history-player-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.history-player-score {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.results-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Action Sections */
.scoring-actions,
.results-actions {
    display: flex;
    gap: var(--spacing-base);
    justify-content: center;
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.scoring-actions .btn,
.results-actions .btn {
    min-width: 150px;
    font-size: var(--font-size-base);
    padding: var(--spacing-sm) var(--spacing-base);
}

.start-section {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.modal-content h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.modal-content p {
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* How to Play Modal */
.how-to-play-content {
    max-width: 800px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
    text-align: left;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-base);
    border-bottom: 2px solid var(--border-color);
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: var(--font-size-xl);
    padding: var(--spacing-sm);
    border-radius: 50%;
    transition: var(--transition);
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--danger-color);
    color: white;
    transform: scale(1.1);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.modal-body h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-base);
    font-weight: 600;
}

.modal-body h4 i {
    color: var(--primary-light);
}

.game-objective p,
.modal-body p {
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: var(--spacing-base);
}

/* Game Steps */
.step {
    display: flex;
    gap: var(--spacing-base);
    padding: var(--spacing-base);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    margin-bottom: var(--spacing-base);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.step-content h5 {
    color: var(--primary-color);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.step-content p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
    line-height: 1.5;
}

/* Scoring Rules */
.scoring-table {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base);
}

.scoring-row {
    display: grid;
    grid-template-columns: 1fr auto 2fr;
    gap: var(--spacing-base);
    align-items: center;
    padding: var(--spacing-base);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.scoring-row:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.score-type {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.score-type.unique {
    color: var(--success-color);
}

.score-type.shared {
    color: var(--warning-color);
}

.score-type.empty {
    color: var(--danger-color);
}

.score-points {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    text-align: center;
    min-width: 4rem;
}

.score-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Game Tips */
.game-tips ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.game-tips li {
    padding: var(--spacing-sm) 0;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    border-bottom: 1px solid var(--border-color);
}

.game-tips li:last-child {
    border-bottom: none;
}

/* Example Round */
.example-content {
    background: var(--bg-secondary);
    padding: var(--spacing-base);
    border-radius: var(--border-radius);
    border: 2px solid var(--primary-color);
    border-style: dashed;
}

.example-letter {
    text-align: center;
    margin-bottom: var(--spacing-base);
    font-size: var(--font-size-lg);
}

.example-letter strong {
    display: inline-block;
    width: 3rem;
    height: 3rem;
    line-height: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 50%;
    margin-left: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.example-categories {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.example-category {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    padding: var(--spacing-sm);
    background: var(--bg-primary);
    border-radius: var(--border-radius-sm);
}

.example-category span:first-child {
    font-weight: 600;
    min-width: 6rem;
    color: var(--primary-color);
}

.example-category span:last-child {
    color: var(--text-secondary);
    font-style: italic;
}

.modal-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-base);
    border-top: 2px solid var(--border-color);
    text-align: center;
}

.modal-footer .btn {
    padding: var(--spacing-base) var(--spacing-2xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-base);
    }

    .header h1 {
        font-size: var(--font-size-3xl);
    }

    .header p {
        font-size: var(--font-size-lg);
    }

    .setup-section {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }

    .setup-section h2 {
        font-size: var(--font-size-xl);
    }

    .game-header {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
        padding: var(--spacing-lg);
    }

    .timer-display {
        justify-content: center;
    }

    .timer-circle {
        width: 5rem;
        height: 5rem;
        font-size: var(--font-size-xl);
    }

    .letter-display span:last-child {
        width: 4rem;
        height: 4rem;
        line-height: 4rem;
        font-size: var(--font-size-2xl);
    }

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

    .categories-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: var(--spacing-sm);
    }

    .players-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-base);
    }

    .scoring-header-row,
    .scoring-row {
        grid-template-columns: 120px repeat(auto-fit, minmax(80px, 1fr));
        gap: var(--spacing-xs);
    }

    .game-controls,
    .scoring-controls,
    .results-controls {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-base);
    }

    .btn {
        width: 100%;
        max-width: 320px;
        padding: var(--spacing-lg) var(--spacing-xl);
    }

    .language-selector {
        position: static;
        margin-bottom: var(--spacing-base);
        text-align: center;
    }

    .theme-toggle {
        position: static;
        margin: 0 auto var(--spacing-base);
        width: 3rem;
        height: 3rem;
    }

    .modal-content {
        margin: var(--spacing-base);
        width: calc(100% - 2rem);
    }

    .how-to-play-content {
        width: calc(100% - 1rem);
        max-height: 85vh;
        padding: var(--spacing-base);
    }

    .modal-header h3 {
        font-size: var(--font-size-lg);
    }

    .modal-body {
        gap: var(--spacing-lg);
    }

    .step {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .step-number {
        align-self: flex-start;
        width: 2rem;
        height: 2rem;
        font-size: var(--font-size-base);
    }

    .scoring-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .example-categories {
        gap: var(--spacing-xs);
    }

    .example-category {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }

    .example-category span:first-child {
        min-width: auto;
    }

    .how-to-play-btn {
        position: static;
        margin: 0 auto var(--spacing-base);
        width: auto;
    }

    .how-to-play-btn span {
        display: none;
    }

    .how-to-play-btn {
        width: 3rem;
        height: 3rem;
        padding: 0;
        border-radius: 50%;
    }
}

@media (max-width: 480px) {
    .setup-section {
        padding: var(--spacing-base);
    }

    .setup-section h2 {
        font-size: var(--font-size-lg);
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }

    .players-list {
        grid-template-columns: 1fr;
    }

    .player-input {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
        padding: var(--spacing-base);
    }

    .player-input span {
        min-width: auto;
        text-align: left;
    }

    .modal-content {
        padding: var(--spacing-lg);
    }

    .modal-buttons {
        flex-direction: column;
        gap: var(--spacing-base);
    }

    .btn {
        padding: var(--spacing-base);
        font-size: var(--font-size-sm);
    }

    .timer-circle {
        width: 4rem;
        height: 4rem;
        font-size: var(--font-size-lg);
    }

    .header h1 {
        font-size: var(--font-size-2xl);
    }

    .category-item {
        padding: var(--spacing-base);
        font-size: var(--font-size-xs);
    }

    .how-to-play-content {
        padding: var(--spacing-sm);
        max-height: 80vh;
    }

    .modal-header {
        margin-bottom: var(--spacing-base);
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .modal-body h4 {
        font-size: var(--font-size-base);
    }

    .step-content h5 {
        font-size: var(--font-size-sm);
    }

    .example-letter strong {
        width: 2.5rem;
        height: 2.5rem;
        line-height: 2.5rem;
        font-size: var(--font-size-lg);
    }

    .modal-footer .btn {
        width: 100%;
        padding: var(--spacing-lg);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}

/* Focus styles for better accessibility */
button:focus,
input:focus,
select:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    border-color: var(--primary-color);
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 6px rgba(99, 102, 241, 0.15);
}

/* Skip link for screen readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    z-index: 9999;
    transition: var(--transition);
}

.skip-link:focus {
    top: 6px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --border-color-light: #333333;
        --shadow: 0 0 0 2px #000000;
        --shadow-lg: 0 0 0 3px #000000;
    }
    
    [data-theme="dark"] {
        --border-color: #ffffff;
        --border-color-light: #cccccc;
        --shadow: 0 0 0 2px #ffffff;
        --shadow-lg: 0 0 0 3px #ffffff;
    }

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

    .category-item.selected {
        background: var(--primary-color);
        border: 3px solid var(--text-primary);
    }
}

/* Loading animation for smooth transitions */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Apply animations to elements */
.setup-section {
    animation: fadeInUp 0.6s ease-out;
}

.setup-section:nth-child(2) {
    animation-delay: 0.1s;
}

.setup-section:nth-child(3) {
    animation-delay: 0.2s;
}

.setup-section:nth-child(4) {
    animation-delay: 0.3s;
}

.category-item {
    animation: slideInRight 0.4s ease-out;
}

.player-input {
    animation: fadeInUp 0.5s ease-out;
}

.btn {
    animation: scaleIn 0.3s ease-out;
}

/* Additional score button styles for JavaScript-generated buttons */
.btn-score {
    flex: 1;
    padding: 0.75rem 0.5rem;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    min-width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin: 10px;
}

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

.btn-score.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.btn-no-answer.active {
    background: #dc3545 !important;
    border-color: #dc3545 !important;
}

.btn-tied.active {
    background: #fd7e14 !important;
    border-color: #fd7e14 !important;
}

.btn-valid.active {
    background: #198754 !important;
    border-color: #198754 !important;
}