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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #3b82f6;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0e7ff 100%);
    height: 100vh;
    color: var(--text-color);
    padding: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    animation: fadeIn 0.6s ease-out;
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

header {
    text-align: center;
    margin-bottom: 25px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Game Modes Row */
.game-modes-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

/* Game Modes */
.game-modes {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    flex: 1;
}

.mode-btn {
    background: var(--card-bg);
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 16px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-color);
    box-shadow: var(--shadow);
    font-size: 0.9rem;
    font-weight: 500;
}

.mode-btn:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.mode-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Selectors Row */
.selectors-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 10px;
    flex-shrink: 0;
}

/* Auto Advance Row */
.auto-advance-row {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 10px;
    flex-shrink: 0;
}

.profession-selector,
.theme-selector {
    background: var(--card-bg);
    padding: 12px 16px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.profession-selector label,
.theme-selector label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
    white-space: nowrap;
}

.profession-selector select,
.theme-selector select {
    flex: 1;
    min-width: 120px;
    padding: 6px 12px;
    font-size: 0.85rem;
    background: var(--bg-color);
    color: var(--text-color);
    border: 1.5px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
}

.profession-selector select:hover,
.theme-selector select:hover {
    border-color: var(--primary-color);
}

.profession-selector select:focus,
.theme-selector select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Auto Advance Selector */
.auto-advance-selector {
    background: var(--card-bg);
    padding: 12px 16px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.auto-advance-selector label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
    margin: 0;
}

.auto-advance-selector input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #000000;
    border: 1.5px solid var(--border-color);
    border-radius: 4px;
}

.auto-advance-selector input[type="checkbox"]:focus {
    outline: 2px solid #000000;
    outline-offset: 2px;
}

.auto-advance-selector span {
    user-select: none;
}

/* Time Duration Row */
.time-duration-row {
    display: none;
    background: var(--card-bg);
    padding: 12px 16px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 10px;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.time-duration-row.active {
    display: flex;
}

.time-duration-row label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color);
    white-space: nowrap;
}

.duration-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    flex: 1;
}

.duration-btn {
    background: var(--bg-color);
    border: 1.5px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 16px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-color);
    font-size: 0.85rem;
    font-weight: 500;
}

.duration-btn:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.duration-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Main Content Wrapper */
.main-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    padding-bottom: 80px;
}

/* Stats */
.stats-container {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    max-width: 1200px;
    width: calc(100% - 40px);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 5px;
    padding: 8px 15px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin: 0;
    z-index: 100;
}

.stat-box {
    background: transparent;
    padding: 4px 8px;
    border-radius: 0;
    text-align: center;
    box-shadow: none;
    border: none;
    transition: var(--transition);
}


.stat-label {
    display: block;
    font-size: 0.65rem;
    color: var(--text-secondary);
    margin-bottom: 3px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    font-weight: 500;
}

.stat-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Game Area */
.game-area {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 32px;
    flex: 1;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    position: relative;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.game-area::-webkit-scrollbar {
    width: 6px;
}

.game-area::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 10px;
}

.game-area::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}

.game-area::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.words-display {
    font-size: 1.6rem;
    line-height: 2.2;
    letter-spacing: 1px;
    word-spacing: 8px;
    user-select: none;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Courier New', monospace;
}

.word {
    display: inline-block;
    margin: 4px;
    position: relative;
}

.word.current {
    background: rgba(99, 102, 241, 0.08);
    padding: 4px 8px;
    border-radius: 6px;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15);
}

.letter {
    position: relative;
    transition: color 0.1s ease;
}

.letter.correct {
    color: var(--success-color);
}

.letter.incorrect {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.12);
    border-radius: 3px;
    padding: 0 2px;
}

.letter.skipped {
    color: var(--text-secondary);
    opacity: 0.5;
    background: rgba(100, 116, 139, 0.1);
    border-radius: 3px;
    padding: 0 2px;
}

.translation {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 2px;
    opacity: 0.8;
}

.letter.current-letter {
    border-bottom: 2px solid var(--primary-color);
    animation: blink 1.2s ease-in-out infinite;
}

@keyframes blink {
    0%, 50%, 100% {
        opacity: 1;
    }
    25%, 75% {
        opacity: 0.5;
    }
}

/* Flowing Words Mode */
.flowing-words {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.flowing-words.active {
    display: block;
}

.flowing-word {
    position: absolute;
    font-size: 1.5rem;
    font-weight: 600;
    padding: 10px 20px;
    background: var(--primary-color);
    color: white;
    border-radius: 10px;
    animation: flowDown 10s linear;
    cursor: pointer;
    transition: var(--transition);
}

.flowing-word:hover {
    transform: scale(1.1);
}

.flowing-word.matched {
    background: var(--success-color);
    color: white;
    animation: explode 0.5s ease-out forwards;
}

.flowing-word.missed {
    background: var(--error-color);
    color: white;
    animation: explode 0.3s ease-out forwards;
}

@keyframes flowDown {
    from {
        top: -60px;
        opacity: 1;
    }
    to {
        top: 100%;
        opacity: 0.8;
    }
}

@keyframes explode {
    to {
        transform: scale(2);
        opacity: 0;
    }
}

/* Input Area */
.input-area {
    margin-bottom: 10px;
    flex-shrink: 0;
}

#typing-input {
    width: 100%;
    padding: 16px 20px;
    font-size: 1.3rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-color);
    outline: none;
    transition: var(--transition);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Courier New', monospace;
    box-shadow: var(--shadow);
}

#typing-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

#typing-input.error {
    border-color: var(--error-color);
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.control-btn {
    padding: 10px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    background: var(--card-bg);
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
    text-decoration: none;
    display: inline-block;
}

.control-btn:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.control-btn.primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 25px;
    padding: 50px;
    max-width: 600px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.4s ease-out;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: transparent;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    line-height: 1;
}

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

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

.modal-content h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.result-item {
    text-align: center;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 15px;
    border: 2px solid transparent;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.result-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.result-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.result-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

#play-again-btn {
    display: block;
    margin-left: auto;
    margin-top: 30px;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }

    header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .main-content {
        padding-bottom: 70px;
    }

    .stats-container {
        bottom: 15px;
        width: calc(100% - 30px);
    }

    .game-modes-row {
        flex-direction: column;
        align-items: stretch;
        margin-bottom: 10px;
    }

    .game-modes {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
        width: 100%;
    }

    .mode-btn {
        padding: 10px 8px;
        font-size: 0.8rem;
    }

    .mode-name {
        font-size: 0.8rem;
    }

    #restart-btn {
        width: 100%;
        padding: 12px;
    }

    .selectors-row {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        margin-bottom: 10px;
    }

    .auto-advance-row {
        justify-content: flex-end;
        margin-bottom: 10px;
    }

    .auto-advance-selector {
        padding: 10px 12px;
    }

    .auto-advance-selector label {
        font-size: 0.8rem;
    }

    .profession-selector,
    .theme-selector {
        flex-direction: column;
        align-items: stretch;
        padding: 10px 12px;
    }

    .profession-selector label,
    .theme-selector label {
        font-size: 0.8rem;
        margin-bottom: 4px;
    }

    .profession-selector select,
    .theme-selector select {
        flex: 1;
        min-width: auto;
        font-size: 0.8rem;
        padding: 5px 8px;
    }

    .time-duration-row {
        flex-direction: column;
        align-items: stretch;
        padding: 10px 12px;
        margin-bottom: 10px;
    }

    .time-duration-row label {
        font-size: 0.8rem;
        margin-bottom: 8px;
    }

    .duration-buttons {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: 6px;
    }

    .duration-btn {
        padding: 8px 10px;
        font-size: 0.8rem;
    }

    .stats-container {
        grid-template-columns: repeat(4, 1fr);
        gap: 4px;
        padding: 6px 12px;
    }

    .stat-box {
        padding: 3px 6px;
    }

    .stat-label {
        font-size: 0.6rem;
        margin-bottom: 2px;
    }

    .stat-value {
        font-size: 1rem;
    }

    .game-area {
        padding: 20px;
    }

    .words-display {
        font-size: 1.5rem;
        line-height: 2.1;
    }

    .input-area {
        margin-bottom: 10px;
    }

    #typing-input {
        padding: 15px 20px;
        font-size: 1.2rem;
    }

    .control-btn {
        padding: 12px 30px;
        font-size: 1rem;
    }

    .modal-content {
        padding: 30px 20px;
    }

    .modal-content h2 {
        font-size: 1.8rem;
    }

    .result-value {
        font-size: 1.5rem;
    }

    .flowing-word {
        font-size: 1.2rem;
        padding: 8px 15px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .main-content {
        padding-bottom: 65px;
    }

    .stats-container {
        bottom: 10px;
        width: calc(100% - 20px);
    }

    .game-modes-row {
        margin-bottom: 8px;
    }

    .game-modes {
        grid-template-columns: repeat(2, 1fr);
        gap: 5px;
    }

    .mode-btn {
        padding: 8px 6px;
        font-size: 0.75rem;
    }

    .mode-name {
        font-size: 0.75rem;
    }

    #restart-btn {
        font-size: 0.85rem;
        padding: 10px;
    }

    .input-area {
        margin-bottom: 8px;
    }

    .duration-buttons {
        grid-template-columns: repeat(3, 1fr);
        gap: 5px;
    }

    .duration-btn {
        padding: 7px 6px;
        font-size: 0.7rem;
    }

    .stats-container {
        grid-template-columns: repeat(4, 1fr);
        gap: 2px;
        padding: 5px 8px;
    }

    .stat-box {
        padding: 3px 2px;
    }

    .stat-label {
        font-size: 0.55rem;
        margin-bottom: 1px;
    }

    .stat-value {
        font-size: 0.9rem;
    }

    .game-area {
        padding: 15px;
    }

    .words-display {
        font-size: 1.1rem;
        line-height: 1.8;
        letter-spacing: 1px;
    }

    #typing-input {
        padding: 12px 15px;
        font-size: 1rem;
    }

    .result-stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .controls {
        flex-direction: column;
    }

    .control-btn {
        width: 100%;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Visible */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Theme Variations */
[data-theme="green"] {
    --primary-color: #10b981;
    --secondary-color: #059669;
    --accent-color: #34d399;
}

[data-theme="green"] body {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
}

[data-theme="red"] {
    --primary-color: #ef4444;
    --secondary-color: #dc2626;
    --accent-color: #f87171;
}

[data-theme="red"] body {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
}

[data-theme="gray"] {
    --primary-color: #64748b;
    --secondary-color: #475569;
    --accent-color: #94a3b8;
}

[data-theme="gray"] body {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

[data-theme="dark"] {
    --primary-color: #818cf8;
    --secondary-color: #6366f1;
    --accent-color: #a5b4fc;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --shadow: 0 1px 3px 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);
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

[data-theme="light"] {
    --primary-color: #2563eb;
    --secondary-color: #1d4ed8;
    --accent-color: #3b82f6;
    --bg-color: #ffffff;
    --card-bg: #f8fafc;
    --text-color: #0f172a;
    --text-secondary: #475569;
    --border-color: #cbd5e1;
}

[data-theme="light"] body {
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
}