/* Enhanced Typing Trainer Styles */

/* Virtual Keyboard Styles */
.virtual-keyboard {
    background: linear-gradient(145deg, rgba(26, 31, 58, 0.95), rgba(10, 14, 39, 0.95));
    padding: 30px;
    border-radius: 24px;
    margin: 30px 0;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        0 0 40px rgba(0, 212, 255, 0.15);
    backdrop-filter: blur(30px);
    border: 1px solid rgba(0, 212, 255, 0.3);
    transform: translateZ(15px);
    transition: all 0.4s ease;
}

.keyboard-instructions {
    text-align: center;
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 1.1rem;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.key {
    min-width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, rgba(52, 58, 84, 0.9), rgba(30, 35, 58, 0.9));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--light-gray);
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 
        0 4px 12px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.key::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 0.6s ease;
}

.key.current {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: var(--white);
    transform: scale(1.1) translateY(-2px);
    box-shadow: 
        0 8px 25px rgba(0, 212, 255, 0.4),
        0 0 30px rgba(0, 212, 255, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    animation: keyPulse 1.5s ease-in-out infinite;
}

.key.next {
    border-color: var(--accent-color);
    background: linear-gradient(145deg, rgba(139, 92, 246, 0.2), rgba(139, 92, 246, 0.1));
    animation: keyBreathe 2s ease-in-out infinite;
}

.key.correct {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: var(--white);
    animation: keySuccess 0.6s ease-out;
}

.key.incorrect {
    background: linear-gradient(135deg, var(--error-color), #dc2626);
    color: var(--white);
    animation: keyError 0.4s ease-out;
}

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

.space-key {
    min-width: 200px;
    font-size: 12px;
    letter-spacing: 2px;
}

@keyframes keyPulse {
    0%, 100% { 
        box-shadow: 
            0 8px 25px rgba(0, 212, 255, 0.4),
            0 0 30px rgba(0, 212, 255, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.3);
    }
    50% { 
        box-shadow: 
            0 12px 35px rgba(0, 212, 255, 0.6),
            0 0 40px rgba(0, 212, 255, 0.5),
            inset 0 1px 0 rgba(255, 255, 255, 0.4);
    }
}

@keyframes keyBreathe {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes keySuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

@keyframes keyError {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-3px); }
    75% { transform: translateX(3px); }
}

/* Finger Guide */
.finger-guide {
    display: flex;
    justify-content: space-around;
    margin-top: 25px;
    padding: 20px;
    background: linear-gradient(145deg, rgba(139, 92, 246, 0.1), rgba(0, 212, 255, 0.1));
    border-radius: 16px;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.hand {
    display: flex;
    gap: 8px;
}

.finger {
    padding: 8px 12px;
    background: linear-gradient(145deg, rgba(52, 58, 84, 0.8), rgba(30, 35, 58, 0.8));
    border-radius: 8px;
    font-size: 10px;
    text-align: center;
    color: var(--gray);
    transition: all 0.3s ease;
    min-width: 50px;
}

.finger.active {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: var(--white);
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.finger.next {
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

/* Enhanced Controls */
.enhanced-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
    padding: 30px;
    background: linear-gradient(145deg, rgba(26, 31, 58, 0.9), rgba(10, 14, 39, 0.9));
    border-radius: 20px;
    box-shadow: 
        0 15px 35px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.training-mode, .settings {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.training-mode label, .settings label {
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 8px;
}

#training-mode {
    padding: 12px 16px;
    border: 2px solid rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    background: linear-gradient(145deg, rgba(26, 31, 58, 0.8), rgba(10, 14, 39, 0.8));
    color: var(--light-gray);
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

#training-mode:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.settings {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.settings label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--light-gray);
    font-weight: 500;
}

.settings input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--secondary-color);
    cursor: pointer;
}

/* Progress Indicators */
.progress-indicators {
    grid-column: 1 / -1;
}

.progress-item {
    margin-bottom: 20px;
}

.progress-item .label {
    display: block;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: linear-gradient(145deg, rgba(52, 58, 84, 0.8), rgba(30, 35, 58, 0.8));
    border-radius: 6px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    border-radius: 6px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressShimmer 2s ease-in-out infinite;
}

@keyframes progressShimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Detailed Statistics */
.detailed-stats {
    margin-top: 30px;
    padding: 30px;
    background: linear-gradient(145deg, rgba(26, 31, 58, 0.95), rgba(10, 14, 39, 0.95));
    border-radius: 20px;
    box-shadow: 
        0 15px 35px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.detailed-stats h3 {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 25px;
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.stat-card {
    background: linear-gradient(145deg, rgba(52, 58, 84, 0.6), rgba(30, 35, 58, 0.6));
    padding: 25px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(0, 212, 255, 0.3);
}

.stat-card h4 {
    color: var(--accent-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
    text-align: center;
}

.mini-chart, .key-list, .finger-stats {
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-gray);
    font-style: italic;
}

/* Problem Keys Display */
.problem-key {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(220, 38, 38, 0.1));
    border-radius: 8px;
    margin-bottom: 8px;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.key-name {
    font-weight: bold;
    color: var(--error-color);
    font-size: 1.2rem;
}

.error-count {
    color: var(--light-gray);
    font-size: 0.9rem;
}

/* Finger Accuracy Stats */
.finger-stat {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.finger-name {
    min-width: 80px;
    color: var(--light-gray);
    font-size: 0.9rem;
}

.accuracy-bar {
    flex: 1;
    height: 8px;
    background: rgba(52, 58, 84, 0.8);
    border-radius: 4px;
    overflow: hidden;
}

.accuracy-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--error-color), var(--warning-color), var(--success-color));
    border-radius: 4px;
    transition: width 0.6s ease;
}

.accuracy-value {
    min-width: 40px;
    text-align: right;
    color: var(--light-gray);
    font-size: 0.9rem;
    font-weight: 600;
}

/* Enhanced Character Display */
.char {
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 6px;
    padding: 4px 2px;
    margin: 0 1px;
    display: inline-block;
}

.char.current {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: var(--white);
    box-shadow: 
        0 0 25px rgba(0, 212, 255, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    animation: charPulse 1.2s ease-in-out infinite;
    transform: scale(1.15) translateZ(5px);
    font-weight: 700;
    z-index: 10;
}

.char.next {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(139, 92, 246, 0.1));
    color: var(--accent-color);
    border: 1px solid rgba(139, 92, 246, 0.3);
    animation: charNext 2s ease-in-out infinite;
}

.char.correct {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.3), rgba(16, 185, 129, 0.2));
    color: var(--success-color);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
    animation: charSuccess 0.5s ease-out;
}

.char.incorrect {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.4), rgba(239, 68, 68, 0.3));
    color: var(--error-color);
    box-shadow: 0 0 12px rgba(239, 68, 68, 0.4);
    animation: charError 0.4s ease-out;
}

.char.shake {
    animation: charShake 0.3s ease-in-out;
}

@keyframes charPulse {
    0%, 100% { 
        box-shadow: 
            0 0 25px rgba(0, 212, 255, 0.6),
            inset 0 1px 0 rgba(255, 255, 255, 0.3);
    }
    50% { 
        box-shadow: 
            0 0 35px rgba(0, 212, 255, 0.8),
            inset 0 1px 0 rgba(255, 255, 255, 0.4);
        transform: scale(1.2) translateZ(8px);
    }
}

@keyframes charNext {
    0%, 100% { opacity: 0.7; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(-1px); }
}

@keyframes charSuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); opacity: 0.8; }
    100% { transform: scale(1.05); opacity: 1; }
}

@keyframes charError {
    0%, 100% { transform: translateX(0) scale(1); }
    25% { transform: translateX(-4px) scale(1.1); }
    75% { transform: translateX(4px) scale(1.1); }
}

@keyframes charShake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-3px); }
    20%, 40%, 60%, 80% { transform: translateX(3px); }
}

/* Next Characters Preview */
.next-chars-display {
    text-align: center;
    margin: 15px 0;
    padding: 12px;
    background: linear-gradient(145deg, rgba(139, 92, 246, 0.1), rgba(0, 212, 255, 0.1));
    border-radius: 12px;
    border: 1px solid rgba(139, 92, 246, 0.2);
    font-family: 'Courier New', monospace;
}

.next-char {
    display: inline-block;
    padding: 4px 6px;
    margin: 0 2px;
    background: rgba(139, 92, 246, 0.2);
    border-radius: 4px;
    color: var(--accent-color);
    font-weight: 600;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .virtual-keyboard {
        padding: 20px 15px;
    }
    
    .key {
        min-width: 35px;
        height: 35px;
        font-size: 12px;
    }
    
    .space-key {
        min-width: 150px;
        font-size: 10px;
    }
    
    .finger-guide {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    
    .finger {
        min-width: 40px;
        padding: 6px 10px;
        font-size: 9px;
    }
    
    .enhanced-controls {
        grid-template-columns: 1fr;
        padding: 20px;
        gap: 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 20px;
    }
    
    .detailed-stats {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .keyboard-row {
        gap: 4px;
    }
    
    .key {
        min-width: 30px;
        height: 30px;
        font-size: 11px;
    }
    
    .space-key {
        min-width: 120px;
    }
    
    .enhanced-controls {
        padding: 15px;
    }
    
    .detailed-stats h3 {
        font-size: 1.5rem;
    }
}

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

*:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Letter Progression Chart */
.progression-chart {
    padding: 15px 0;
}

.progression-letters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(45px, 1fr));
    gap: 8px;
    margin-bottom: 15px;
}

.progression-letter {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 4px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    min-height: 60px;
    justify-content: center;
}

.progression-letter.locked {
    background: linear-gradient(145deg, rgba(75, 85, 99, 0.3), rgba(55, 65, 81, 0.3));
    border: 1px solid rgba(75, 85, 99, 0.5);
    opacity: 0.5;
}

.progression-letter.unlocked {
    background: linear-gradient(145deg, rgba(59, 130, 246, 0.3), rgba(37, 99, 235, 0.3));
    border: 1px solid rgba(59, 130, 246, 0.5);
    animation: letterPulse 2s ease-in-out infinite;
}

.progression-letter.mastered {
    background: linear-gradient(145deg, rgba(16, 185, 129, 0.4), rgba(5, 150, 105, 0.4));
    border: 1px solid rgba(16, 185, 129, 0.6);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.3);
}

.progression-letter .letter {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--light-gray);
    margin-bottom: 4px;
}

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

.progression-letter.unlocked .letter {
    color: var(--secondary-color);
}

.letter-stats {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
}

.letter-stats small {
    font-size: 0.7rem;
    color: var(--gray);
    line-height: 1;
}

.progression-legend {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--light-gray);
    font-size: 0.8rem;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.legend-color.locked {
    background: linear-gradient(145deg, rgba(75, 85, 99, 0.5), rgba(55, 65, 81, 0.5));
}

.legend-color.unlocked {
    background: linear-gradient(145deg, rgba(59, 130, 246, 0.5), rgba(37, 99, 235, 0.5));
}

.legend-color.mastered {
    background: linear-gradient(145deg, rgba(16, 185, 129, 0.6), rgba(5, 150, 105, 0.6));
}

@keyframes letterPulse {
    0%, 100% { 
        opacity: 0.8;
        transform: scale(1);
    }
    50% { 
        opacity: 1;
        transform: scale(1.05);
    }
}

/* Phase Requirements */
.phase-requirements {
    margin-top: 8px;
    padding: 8px 12px;
    background: linear-gradient(145deg, rgba(139, 92, 246, 0.1), rgba(0, 212, 255, 0.1));
    border-radius: 8px;
    border: 1px solid rgba(139, 92, 246, 0.2);
    font-size: 0.85rem;
    color: var(--light-gray);
    text-align: center;
}

.phase-requirements strong {
    color: var(--secondary-color);
}

/* Custom Text Button */
.settings .btn {
    padding: 8px 16px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 6px;
    background: linear-gradient(145deg, rgba(26, 31, 58, 0.8), rgba(10, 14, 39, 0.8));
    color: var(--light-gray);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 8px;
}

.settings .btn:hover {
    border-color: var(--secondary-color);
    background: linear-gradient(145deg, rgba(0, 212, 255, 0.1), rgba(139, 92, 246, 0.1));
    color: var(--secondary-color);
}

/* Notification Styles */
.notification {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Enhanced Stats Grid for Mobile */
@media (max-width: 768px) {
    .progression-letters {
        grid-template-columns: repeat(auto-fit, minmax(40px, 1fr));
        gap: 6px;
    }
    
    .progression-letter {
        min-height: 50px;
        padding: 6px 3px;
    }
    
    .progression-letter .letter {
        font-size: 1rem;
    }
    
    .letter-stats small {
        font-size: 0.6rem;
    }
    
    .progression-legend {
        gap: 15px;
        flex-wrap: wrap;
    }
    
    .legend-item {
        font-size: 0.75rem;
    }
    
    .phase-requirements {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .progression-letters {
        grid-template-columns: repeat(auto-fit, minmax(35px, 1fr));
        gap: 4px;
    }
    
    .progression-letter {
        min-height: 45px;
        padding: 4px 2px;
    }
    
    .progression-letter .letter {
        font-size: 0.9rem;
    }
    
    .legend-item {
        font-size: 0.7rem;
    }
    
    .legend-color {
        width: 10px;
        height: 10px;
    }
}

/* Enhanced mode visibility controls */
body:not(.adaptive-mode) .virtual-keyboard,
body:not(.adaptive-mode) .enhanced-controls,
body:not(.adaptive-mode) .detailed-stats {
    display: none;
}

body.adaptive-mode .virtual-keyboard,
body.adaptive-mode .enhanced-controls {
    display: block;
}

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

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--secondary-light), var(--accent-light));
}