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

:root {
    --primary-bg: #2c2e31;
    --secondary-bg: #1e1e1e;
    --accent-color: #e2b714;
    --accent-color-dark: #c19a12;
    --accent-color-alpha: rgba(226, 183, 20, 0.1);
    --text-primary: #d1d0c5;
    --text-secondary: #646669;
    --text-tertiary: #86888a;
    --text-muted: #86888a;
    --border-color: #3c3f41;
    --success-color: #4caf50;
    --error-color: #f44336;
    --current-word-bg: #e2b714;
    --current-word-text: #2c2e31;
    --glass-bg: rgba(44, 46, 49, 0.8);
    --card-bg: rgba(44, 46, 49, 0.9);
    --card-bg-secondary: rgba(30, 30, 30, 0.8);
    --input-bg: rgba(30, 30, 30, 0.8);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --card-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--primary-bg);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 1rem;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem 0;
}

.title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: clamp(1rem, 4vw, 1.2rem);
    font-weight: 400;
    color: var(--text-secondary);
    opacity: 0.9;
}

.stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.stat {
    background: var(--glass-bg);
    padding: 1.25rem 1rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(226, 183, 20, 0.1), transparent);
    transition: left 0.5s;
}

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

.stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-color);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    display: block;
    font-size: clamp(1.5rem, 5vw, 2rem);
    font-weight: 700;
    color: var(--text-primary);
}

.typing-area {
    background: var(--glass-bg);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    position: relative;
}

.typing-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.words-container {
    min-height: 120px;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--secondary-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    font-size: clamp(1rem, 4vw, 1.3rem);
    line-height: 1.8;
    word-wrap: break-word;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    letter-spacing: 0.02em;
}

.word {
    display: inline-block;
    margin-right: 0.5rem;
    padding: 0.1rem 0.2rem;
    border-radius: 4px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.word.current {
    background: var(--current-word-bg);
    color: var(--current-word-text);
    font-weight: 600;
    box-shadow: 0 0 20px rgba(226, 183, 20, 0.3);
}

.word.correct {
    color: var(--success-color);
    font-weight: 500;
}

.word.incorrect {
    color: var(--error-color);
    text-decoration: underline;
    text-decoration-color: var(--error-color);
    text-decoration-thickness: 2px;
}

.word.typed {
    color: var(--text-muted);
}

.input-area {
    display: flex;
    gap: 1rem;
    align-items: center;
    position: relative;
}

#typingInput {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: clamp(1rem, 4vw, 1.1rem);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    outline: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Inter', sans-serif;
    background: var(--secondary-bg);
    color: var(--text-primary);
    position: relative;
}

#typingInput:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(226, 183, 20, 0.1);
    background: var(--primary-bg);
}

#typingInput:disabled {
    background: var(--secondary-bg);
    color: var(--text-muted);
    cursor: not-allowed;
    border-color: var(--border-color);
}

#typingInput::placeholder {
    color: var(--text-muted);
}

.restart-btn {
    padding: 1rem 1.5rem;
    background: var(--border-color);
    color: var(--text-primary);
    border: none;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}

.restart-btn:hover {
    background: var(--accent-color);
    color: var(--current-word-text);
    transform: translateY(-1px);
}

.restart-btn:active {
    transform: translateY(0);
}

.results {
    background: var(--glass-bg);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    position: relative;
}

.results::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.results h2 {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.result-item {
    background: var(--secondary-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

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

.result-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    display: block;
    font-size: clamp(1.5rem, 5vw, 1.8rem);
    font-weight: 700;
    color: var(--text-primary);
}

.new-test-btn {
    padding: 1rem 2.5rem;
    background: var(--accent-color);
    color: var(--current-word-text);
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Inter', sans-serif;
}

.new-test-btn:hover {
    background: #f0c040;
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(226, 183, 20, 0.3);
}

.new-test-btn:active {
    transform: translateY(0);
}

/* Enhanced Settings Styles */
.settings {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    margin-top: 24px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.settings-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

.header-controls {
    display: flex;
    gap: 8px;
    align-items: center;
}

.sound-toggle {
    background: var(--card-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sound-toggle:hover {
    background: var(--border-color);
    transform: scale(1.05);
}

.sound-toggle.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.sound-icon {
    font-size: 1.2rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.setting-group label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.setting-group select {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23e2b714' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6,9 12,15 18,9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 48px;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.setting-group select:hover {
    border-color: var(--accent-color);
    background-color: rgba(226, 183, 20, 0.05);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.setting-group select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-color-alpha), 0 4px 16px rgba(0, 0, 0, 0.15);
    background-color: rgba(226, 183, 20, 0.08);
}

.setting-group select:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Custom dropdown arrow animation */
.setting-group select:focus {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23e2b714' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='18,15 12,9 6,15'%3E%3C/polyline%3E%3C/svg%3E");
}

/* Enhanced setting group styling */
.setting-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
}

.setting-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    position: relative;
    padding-left: 4px;
}

.setting-group label::before {
    content: '';
    position: absolute;
    left: -4px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 16px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-color-dark));
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.setting-group:hover label::before {
    opacity: 1;
}

/* Dropdown option styling */
.setting-group select option {
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 12px 16px;
    font-size: 0.9rem;
    border: none;
    transition: background-color 0.2s ease;
}

.setting-group select option:hover {
    background: var(--accent-color-alpha);
}

.setting-group select option:checked {
    background: var(--accent-color);
    color: var(--current-word-text);
    font-weight: 600;
}

/* Enhanced settings grid layout */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 28px;
}

/* Settings container enhancement */
.settings {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 28px;
    margin-top: 28px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.settings::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-color-dark), var(--accent-color));
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

/* Key Statistics Panel */
.key-stats-panel {
    background: var(--card-bg-secondary);
    border-radius: 12px;
    padding: 20px;
    margin-top: 20px;
    border: 1px solid var(--border-color);
}

.key-stats-panel h4 {
    margin: 0 0 16px 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.key-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.key-stat {
    background: var(--card-bg);
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.key-char {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-color);
    font-family: 'JetBrains Mono', monospace;
}

.key-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.key-percentage {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.practice-btn {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-color-dark));
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.practice-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.practice-btn:active {
    transform: translateY(0);
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Enhanced Theme Toggle */
.theme-toggle {
    background: var(--card-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.theme-icon {
    font-size: 1.2rem;
}

/* Enhanced Animations */
@keyframes pulse {
    0% { 
        transform: scale(1);
        box-shadow: 0 0 20px rgba(226, 183, 20, 0.3);
    }
    50% { 
        transform: scale(1.02);
        box-shadow: 0 0 30px rgba(226, 183, 20, 0.5);
    }
    100% { 
        transform: scale(1);
        box-shadow: 0 0 20px rgba(226, 183, 20, 0.3);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.word.current {
    animation: pulse 2s infinite;
}

.stat, .typing-area, .results, .settings {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0.75rem;
    }
    
    .header {
        margin-bottom: 1.5rem;
        padding: 1.5rem 0;
    }
    
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .stat {
        padding: 1rem 0.75rem;
    }
    
    .typing-area {
        padding: 1.5rem;
    }
    
    .words-container {
        padding: 1rem;
        min-height: 100px;
        font-size: 1rem;
    }
    
    .input-area {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .restart-btn {
        width: 100%;
        padding: 0.875rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .setting-group {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .setting-group label {
        min-width: auto;
    }
    
    .setting-group select {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .stats-bar {
        grid-template-columns: 1fr;
    }
    
    .title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .typing-area {
        padding: 1rem;
    }
    
    .words-container {
        padding: 0.75rem;
        font-size: 0.9rem;
        line-height: 1.6;
    }
    
    .stat {
        padding: 0.875rem 0.5rem;
    }
    
    .stat-value {
        font-size: 1.25rem;
    }
    
    .results {
        padding: 1.5rem;
    }
    
    .settings {
        padding: 1.5rem;
    }
}

@media (max-width: 360px) {
    .container {
        padding: 0.5rem;
    }
    
    .typing-area, .results, .settings {
        padding: 1rem;
    }
    
    .words-container {
        padding: 0.5rem;
        font-size: 0.85rem;
    }
}

/* Smooth transitions */
* {
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

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

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-bg: #1a1a1a;
        --secondary-bg: #0f0f0f;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --accent-color: #ffff00;
        --text-primary: #ffffff;
        --text-secondary: #cccccc;
    }
}

/* Responsive Design for Settings */
@media (max-width: 768px) {
    .settings-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .key-stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 8px;
    }
    
    .settings {
        padding: 20px;
        margin-top: 20px;
    }
    
    .key-stats-panel {
        padding: 16px;
        margin-top: 16px;
    }
}

/* About Developer Section */
.about-developer {
    background: linear-gradient(135deg, var(--card-bg), var(--card-bg-secondary));
    border-radius: 16px;
    padding: 24px;
    margin-top: 24px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.about-developer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-color-dark), var(--accent-color));
    animation: shimmer 3s ease-in-out infinite;
}

.about-developer h4 {
    margin: 0 0 20px 0;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
}

.developer-info {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.developer-avatar {
    flex-shrink: 0;
}

.avatar-icon {
    font-size: 3rem;
    display: block;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.developer-details {
    flex: 1;
}

.developer-details h5 {
    margin: 0 0 8px 0;
    color: var(--accent-color);
    font-size: 1.3rem;
    font-weight: 600;
}

.developer-description {
    margin: 0 0 16px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.4;
}

.developer-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.dev-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--card-bg);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.dev-link:hover {
    background: var(--accent-color);
    color: var(--current-word-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(226, 183, 20, 0.3);
    border-color: var(--accent-color);
}

.dev-link:active {
    transform: translateY(0);
}

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

.project-info {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.project-info p {
    margin: 8px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.project-info strong {
    color: var(--accent-color);
}

.tech-stack {
    color: var(--text-tertiary) !important;
    font-size: 0.85rem !important;
    font-style: italic;
}

/* Responsive design for About Developer */
@media (max-width: 768px) {
    .about-developer {
        padding: 20px;
        margin-top: 20px;
    }
    
    .developer-info {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .developer-links {
        justify-content: center;
    }
    
    .avatar-icon {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .developer-links {
        flex-direction: column;
        align-items: center;
    }
    
    .dev-link {
        width: 100%;
        justify-content: center;
    }
}