:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --bg-color: #f7fafc;
    --key-bg: #fff;
    --key-shadow: #cbd5e0;
    --success: #48bb78;
    --error: #f56565;
    --finger-l-pinky: #fed7d7;
    --finger-l-ring: #ffebee;
    --finger-l-middle: #e6fffa;
    --finger-l-index: #ebf8ff;
    --finger-r-index: #ebf8ff;
    --finger-r-middle: #e6fffa;
    --finger-r-ring: #ffebee;
    --finger-r-pinky: #fed7d7;
    --thumb: #faf5ff;
}

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

body {
    font-family: 'Nunito', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header */
header {
    height: 60px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    z-index: 100;
}

.logo {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span span {
    color: var(--secondary-color);
}

.stats-bar {
    display: flex;
    gap: 12px;
    align-items: center;
}

.btn-icon {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: background 0.2s;
}

.btn-icon:hover {
    background: #edf2f7;
}

/* Stage Area */
#stage {
    flex: 1;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    gap: 20px;
    position: relative;
    overflow-y: auto; /* Allow scrolling on small screens */
    scrollbar-width: none; /* Firefox */
}
#stage::-webkit-scrollbar { display: none; /* Chrome/Safari */ }

/* Progress Bar */
.progress-wrapper {
    width: 100%;
    max-width: 800px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.progress-container {
    flex: 1;
    height: 10px;
    background: #e2e8f0;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-color), #4fd1c5);
    border-radius: 5px;
    transition: width 0.3s ease-out;
}

#progress-text {
    font-family: 'Roboto Mono', monospace;
    font-weight: 700;
    color: var(--primary-color);
    font-size: 0.9rem;
    width: 48px;
    text-align: right;
}

/* Level Select Styles */
.level-select-container {
    padding: 0 10px; /* Adjust padding for select */
    background: #fff;
    border-radius: 20px;
    display: flex;
    align-items: center;
    position: relative;
}

#level-select {
    appearance: none;
    -webkit-appearance: none;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    padding-right: 20px; /* Space for arrow */
    outline: none;
    width: 100%;
    min-width: 120px;
    text-overflow: ellipsis;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%232d3748%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 0px center;
    background-size: 10px;
}

#level-select option {
    background: white;
    color: var(--text-primary);
    padding: 10px;
}

#level-select option:disabled {
    color: #cbd5e0;
}

.stat-item {
    background: white;
    padding: 6px 16px;
    border-radius: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
    color: var(--text-primary);
    border: 1px solid rgba(0,0,0,0.04);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    border-color: var(--primary-color);
}

.stat-item span[id$="-value"] {
    font-family: 'Roboto Mono', monospace;
    font-weight: 700;
    color: var(--primary-color);
}

/* Display Area */
.display-area {
    width: 100%;
    max-width: 900px;
    min-height: 200px; /* Increased height */
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    padding: 40px;
    font-family: 'Roboto Mono', monospace;
    font-size: 32px;
    color: #a0aec0;
    position: relative;
    overflow-y: auto; /* Allow scrolling */
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 12px; /* Gap between boxes */
}

.char {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 60px;
    height: 60px;
    border: 2px solid #edf2f7;
    border-radius: 12px;
    background: #f7fafc;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    color: #a0aec0;
    font-weight: 700;
    user-select: none;
}

.char.space {
    width: 60px;
    border-style: dashed;
    border-color: #cbd5e0;
    background: transparent;
}

.char.space::before {
    content: '␣';
    opacity: 0.2;
    font-size: 0.6em;
}

.char.correct {
    background-color: #f0fff4;
    border-color: #48bb78;
    color: #2f855a;
    transform: scale(1);
    z-index: 1;
}

/* Checkmark Animation */
.char.correct::after {
    content: '✔';
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%) scale(0);
    color: #48bb78;
    font-size: 20px;
    font-weight: 900;
    animation: popCheck 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes popCheck {
    0% {
        opacity: 0;
        transform: translateX(-50%) scale(0) translateY(10px);
    }
    60% {
        opacity: 1;
        transform: translateX(-50%) scale(1.2) translateY(0);
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) scale(1) translateY(0);
    }
}

.char.wrong {
    color: #c53030;
    background-color: #fff5f5;
    border-color: #fc8181;
    animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}

.char.current {
    color: var(--primary-color);
    background-color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.25);
    transform: translateY(-4px) scale(1.05);
    z-index: 10;
}

/* 
.char.current::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 10px;
    right: 10px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    opacity: 0.5;
} 
*/

/* Error Overlay inside Display */
.error-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(245, 101, 101, 0.2);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.1s;
}

.error-overlay.active {
    opacity: 1;
}

/* Keyboard Area */
#keyboard-container {
    width: 100%;
    max-width: 900px;
    background: #edf2f7;
    border-radius: 20px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.06);
}

/* Hands Guide */
.hands-guide {
    display: flex;
    justify-content: center;
    gap: 40px;
    height: 100px;
    width: 100%;
}

.hand-wrapper {
    height: 100%;
    width: 100px;
    position: relative;
}

.hand-svg {
    width: 100%;
    height: 100%;
    fill: #cbd5e0; /* Default hand color */
}

.hand-svg .finger {
    transition: fill 0.2s;
}

.hand-svg .finger.active {
    fill: var(--primary-color);
}

.hand-svg .palm {
    fill: #a0aec0;
}

/* Keyboard */
.keyboard {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    background: rgba(255,255,255,0.5);
    border-radius: 12px;
}

.row {
    display: flex;
    justify-content: center;
    gap: 6px;
}

.key {
    width: 50px;
    height: 50px;
    background: var(--key-bg);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    color: var(--text-secondary);
    box-shadow: 0 4px 0 var(--key-shadow);
    transition: all 0.1s;
    font-family: 'Nunito', sans-serif;
    position: relative;
    user-select: none;
}

/* Key Hint Animation */
.key.hint {
    background-color: #ebf8ff; /* Light blue background */
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.6);
    animation: pulse-hint 1.5s infinite;
    z-index: 10;
}

@keyframes pulse-hint {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.7); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(102, 126, 234, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(102, 126, 234, 0); }
}

/* Smooth Caret */
#caret {
    position: absolute;
    width: 4px;
    height: 40px; /* Adjust based on char height */
    background-color: var(--primary-color);
    border-radius: 2px;
    transition: transform 0.1s ease-out;
    pointer-events: none;
    z-index: 20;
    box-shadow: 0 0 8px rgba(102, 126, 234, 0.6);
    animation: blink-caret 1s infinite;
}

@keyframes blink-caret {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Particles */
.particle {
    position: absolute;
    pointer-events: none;
    border-radius: 50%;
    z-index: 100;
}

/* Finger Colors for Keys */
.key[data-finger="l-pinky"] { background: var(--finger-l-pinky); }
.key[data-finger="l-ring"] { background: var(--finger-l-ring); }
.key[data-finger="l-middle"] { background: var(--finger-l-middle); }
.key[data-finger="l-index"] { background: var(--finger-l-index); }
.key[data-finger="r-index"] { background: var(--finger-r-index); }
.key[data-finger="r-middle"] { background: var(--finger-r-middle); }
.key[data-finger="r-ring"] { background: var(--finger-r-ring); }
.key[data-finger="r-pinky"] { background: var(--finger-r-pinky); }

.key.active {
    transform: translateY(4px);
    box-shadow: 0 0 0 var(--key-shadow);
    background: var(--primary-color) !important;
    color: white;
}

.key.flash-guide {
    animation: flash 0.4s ease-in-out;
}

@keyframes flash {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); background: var(--success) !important; color: white; }
}

/* Overlay / Start Screen */
.overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(5px);
    z-index: 50;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 20px; /* Match container if needed, but overlay covers stage */
    text-align: center;
}

.btn-start {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 32px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    transition: all 0.2s;
}

.btn-start:hover {
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: white;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalSlideUp 0.3s ease-out;
}

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

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #edf2f7;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin: 0;
}

.btn-close {
    background: none;
    border: none;
    font-size: 2rem;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0 10px;
    transition: color 0.2s;
}

.btn-close:hover {
    color: var(--error);
}

.level-grid {
    padding: 20px;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.level-card {
    background: white;
    border: 2px solid #edf2f7;
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.level-card:hover:not(.locked) {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.level-card.active {
    border-color: var(--primary-color);
    background: #ebf8ff;
}

.level-card.locked {
    background: #f7fafc;
    cursor: not-allowed;
    opacity: 0.7;
}

.level-icon {
    font-size: 2rem;
    margin-bottom: 5px;
}

.level-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.level-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.level-status {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.2rem;
}

.btn-level-menu {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
}

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

/* Combo Display */
.combo-display {
    height: 24px;
    font-weight: 800;
    color: #ed8936;
    font-size: 1.2rem;
    opacity: 0.8;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    header { padding: 0 10px; }
    .logo span:last-child { display: none; } /* Hide 'Typeasy' text, keep icon */
    .stat-item { padding: 4px 8px; font-size: 0.8rem; }
    #user-display, #family-display { display: none !important; } /* Hide user info to save space */
    .level-select-container { min-width: auto; max-width: 150px; }
    .btn-icon { font-size: 1rem; }
    
    .key { width: 32px; height: 32px; font-size: 0.8rem; }
    .hands-guide { height: 60px; }
    .display-area { font-size: 20px; padding: 15px; }
}

@media (max-height: 700px) {
    header { height: 50px; }
    #stage { padding: 10px; gap: 10px; }
    .display-area { min-height: 80px; padding: 20px; font-size: 24px; }
    .hands-guide { height: 80px; margin-bottom: 5px; }
    .keyboard { transform: scale(0.9); }
    #keyboard-container { padding: 10px; }
}

/* Result Card */
.result-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 500px;
    width: 90%;
    animation: modalSlideUp 0.4s ease-out;
}

.stars {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.result-message {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.result-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.result-stat {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.result-stat .stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.result-stat .stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}