:root {
    --primary-color: #0056b3;
    --accent-color: #ffcc00;
    --bg-color: #f4f4f9;
    --container-bg: #ffffff;
    --text-color: #333;
    --text-muted: #666;
    --border-color: #eee;
    --input-border: #ccc;
    --box-bg: #e9ecef;
    --card-bg: #ffffff;
    --hover-bg: #f8f9fa;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);

    /* Answer States - Light Mode */
    --answer-selected-bg: #d4edda;
    --answer-selected-border: #28a745;
    --answer-selected-text: #155724;

    --answer-correct-bg: #d4edda;
    --answer-correct-border: #28a745;
    --answer-correct-text: #155724;

    --answer-wrong-bg: #f8d7da;
    --answer-wrong-border: #dc3545;
    --answer-wrong-text: #721c24;
}

body.dark-mode {
    --primary-color: #4da3ff;
    --accent-color: #ffd700;
    --bg-color: #121212;
    --container-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --text-muted: #aaa;
    --border-color: #333;
    --input-border: #444;
    --box-bg: #2d2d2d;
    --card-bg: #2d2d2d;
    --hover-bg: #3d3d3d;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.5);

    /* Answer States - Dark Mode */
    --answer-selected-bg: #1e4d2b;
    /* Dark Green */
    --answer-selected-border: #28a745;
    --answer-selected-text: #e0e0e0;
    /* Light Text */

    --answer-correct-bg: #1e4d2b;
    /* Dark Green */
    --answer-correct-border: #28a745;
    --answer-correct-text: #e0e0e0;

    --answer-wrong-bg: #4d1e22;
    /* Dark Red */
    --answer-wrong-border: #dc3545;
    --answer-wrong-text: #e0e0e0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.theme-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px 15px;
    border-radius: 20px;
    border: none;
    background: var(--container-bg);
    color: var(--text-color);
    box-shadow: var(--shadow);
    cursor: pointer;
    font-weight: bold;
    z-index: 1000;
    transition: all 0.3s;
}

.theme-btn:hover {
    transform: scale(1.05);
}

.container {
    width: 90%;
    max-width: 1000px;
    background: var(--container-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    min-height: 600px;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s;
}

.screen {
    display: none;
    flex-direction: column;
    height: 100%;
    flex: 1;
}

.screen.active {
    display: flex;
}

/* Selection Box */
.selection-box {
    margin: 20px 0;
    font-size: 1.2rem;
}

select {
    padding: 10px;
    font-size: 1rem;
    border-radius: 5px;
    border: 1px solid var(--input-border);
    margin-left: 10px;
    background-color: var(--card-bg);
    color: var(--text-color);
}

/* Start Screen */
#start-screen {
    text-align: center;
    justify-content: center;
    align-items: center;
}

.info-box {
    background: var(--box-bg);
    padding: 20px;
    border-radius: 8px;
    text-align: left;
    margin: 20px 0;
    max-width: 500px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 2px solid var(--border-color);
    font-weight: bold;
}

.timer-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.timer-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.timer {
    color: var(--primary-color);
}

.points-badge {
    background: var(--accent-color);
    padding: 2px 10px;
    border-radius: 15px;
    color: #333;
    /* Always dark text on yellow accent */
}

/* Content */
.content-area {
    display: flex;
    flex: 1;
    gap: 20px;
    padding: 20px 0;
}

.media-container {
    flex: 1;
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    max-height: 400px;
    border-radius: 5px;
    overflow: hidden;
}

.media-container img,
.media-container video {
    max-width: 100%;
    max-height: 100%;
}

.question-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#question-text {
    margin-bottom: 30px;
    font-size: 1.3rem;
}

.star-btn {
    background: none;
    border: none;
    font-size: 2rem;
    /* Powiększamy */
    cursor: pointer;
    color: var(--text-color);
    padding: 0 10px;
    line-height: 1;
}

.star-btn.active {
    color: gold;
    text-shadow: 0 0 2px black;
    /* Lekki obrys by było widać na jasnym tle */
}

body.dark-mode .star-btn.active {
    text-shadow: none;
    /* Na ciemnym gold widać dobrze */
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

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

.btn.primary:hover {
    filter: brightness(0.9);
}

.btn.secondary {
    background: #6c757d;
    color: white;
    float: right;
}

.btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

body.dark-mode .btn:disabled {
    background: #555;
    color: #888;
}

/* Answers */
.hidden {
    display: none !important;
}

.answers-grid {
    display: flex;
    gap: 20px;
}

.answers-grid .answer-btn {
    flex: 1;
    padding: 20px;
    font-size: 1.5rem;
    font-weight: bold;
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
}

.answers-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.answers-list .answer-btn {
    padding: 15px;
    text-align: left;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
}

.answers-list .label {
    font-weight: bold;
    color: var(--primary-color);
    margin-right: 10px;
    min-width: 20px;
}

.answer-btn:hover {
    background: var(--hover-bg);
}

.answer-btn.selected {
    background: var(--answer-selected-bg) !important;
    border-color: var(--answer-selected-border) !important;
    color: var(--answer-selected-text) !important;
}

.answer-btn.correct-answer {
    background: var(--answer-correct-bg) !important;
    border-color: var(--answer-correct-border) !important;
    color: var(--answer-correct-text) !important;
}

.answer-btn.wrong-answer {
    background: var(--answer-wrong-bg) !important;
    border-color: var(--answer-wrong-border) !important;
    color: var(--answer-wrong-text) !important;
}

/* Result */
#result-screen {
    text-align: center;
    justify-content: center;
    align-items: center;
}

.score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 10px solid var(--primary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5rem;
    font-weight: bold;
    margin: 20px auto;
}

.passed {
    color: #28a745;
    border-color: #28a745;
}

.failed {
    color: #dc3545;
    border-color: #dc3545;
}

@media (max-width: 768px) {
    .content-area {
        flex-direction: column;
    }

    .media-container {
        min-height: 200px;
    }
}

/* Questions Grid */
.questions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: 10px;
    width: 100%;
    margin-top: 20px;
}

.question-box {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid var(--input-border);
    text-align: center;
    cursor: pointer;
    font-weight: bold;
    border-radius: 5px;
    color: #333;
    /* Override text color for boxes to ensure contrast on colored bg */
}

.question-box.correct {
    background: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.question-box.incorrect {
    background: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.question-box:hover {
    filter: brightness(0.9);
}

/* Review Styles */
.review-btn {
    pointer-events: none;
    /* Disable interaction */
}

.review-btn.correct-answer {
    background: var(--answer-correct-bg) !important;
    border-color: var(--answer-correct-border) !important;
    color: var(--answer-correct-text) !important;
}

.review-btn.wrong-answer {
    background: var(--answer-wrong-bg) !important;
    border-color: var(--answer-wrong-border) !important;
    color: var(--answer-wrong-text) !important;
}