/* --- Global Variables & Resets --- */
:root {
    --primary-bg: #1a1c20;
    --secondary-bg: #2a2d34;
    --panel-bg: #24262b;
    --font-color: #e2e2e2;
    --accent-color: #00aaff;
    --accent-hover: #0088cc;
    --border-color: #444;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--primary-bg);
    color: var(--font-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}

/* --- Main App Container & Layout --- */
#app-container {
    width: 100%;
    max-width: 1600px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#main-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 1.5rem;
    align-items: flex-start;
}

@media (max-width: 1200px) {
    #main-content {
        grid-template-columns: 1fr;
    }
}

/* --- Header & Footer --- */
.app-header, .app-footer {
    background-color: var(--secondary-bg);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.app-header h1 {
    color: var(--accent-color);
    margin-bottom: 0.25rem;
}

.app-footer {
    font-size: 0.8rem;
    color: #888;
}

/* --- Canvas Styling --- */
#canvas-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1; /* Maintain a square aspect ratio */
    background-color: #ffffff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

#drawing-canvas, #analysis-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#drawing-canvas {
    z-index: 10;
    cursor: crosshair;
}

#analysis-canvas {
    z-index: 5;
    pointer-events: none; /* Allows clicks to pass through to the drawing canvas */
}

/* --- Controls Panel --- */
#controls-panel {
    background: var(--secondary-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-section {
    background-color: var(--panel-bg);
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.panel-section h2 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

/* --- UI Elements --- */
.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.control-group label {
    font-weight: bold;
    font-size: 0.9rem;
}

.custom-color-group {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
}

#hex-color-input {
    flex-grow: 1;
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    color: var(--font-color);
    padding: 0.5rem;
    border-radius: 4px;
    font-family: monospace;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: var(--primary-bg);
    border-radius: 4px;
    outline: none;
    transition: opacity 0.2s;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid var(--primary-bg);
}

.app-button {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
    width: 100%;
}

.app-button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

.app-button:disabled {
    background-color: #555;
    cursor: not-allowed;
    transform: none;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* --- Status & Scoring Display --- */
#game-status {
    font-style: italic;
    color: var(--warning-color);
}

#scoring-display.hidden {
    display: none;
}

#perfection-score {
    font-size: 1.5rem;
    color: var(--success-color);
}

#detailed-metrics {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
    font-size: 0.9rem;
}

#detailed-metrics li {
    padding: 0.25rem 0;
}

/* --- Language Selector --- */
.language-selector-container {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

#language-selector {
    background: var(--primary-bg);
    color: var(--font-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
}

/* --- Score Submission & Leaderboard --- */
#score-submission {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

#score-submission input {
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    color: var(--font-color);
    padding: 0.5rem;
    border-radius: 4px;
}

#score-submission button {
    background-color: var(--success-color);
}

#leaderboard-list {
    list-style: none;
    padding: 0;
}

#leaderboard-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0.2rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

#leaderboard-list li:last-child {
    border-bottom: none;
}

#leaderboard-list .rank {
    font-weight: bold;
    color: var(--accent-color);
    flex-basis: 10%;
}
#leaderboard-list .name {
    flex-basis: 60%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
#leaderboard-list .score {
    flex-basis: 30%;
    text-align: right;
    font-weight: bold;
    color: var(--success-color);
}

.hidden {
    display: none !important;
}