:root {
    --primary-color: #2F5233; /* Deep Green */
    --secondary-color: #94C973; /* Light Green */
    --accent-color: #B27C66; /* Wood Brown */
    --bg-color: #F4F1EA; /* Soft Sand */
    --text-color: #333333;
    --white: #FFFFFF;
    --highlight: #FFF3CD;
    --active-highlight: #FFE082;
    --glass-bg: rgba(255, 255, 255, 0.85);
}

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

body {
    font-family: 'Tajawal', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    position: relative;
    overflow-x: hidden;
}

.background-decor {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 30%, rgba(148, 201, 115, 0.1) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(178, 124, 102, 0.1) 0%, transparent 40%);
    z-index: -1;
    pointer-events: none;
}

header {
    text-align: center;
    padding: 3rem 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--secondary-color);
}

header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.2rem;
    color: var(--accent-color);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px 40px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.story-section, .quiz-section {
    background: var(--glass-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.5);
}

.audio-player {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 2rem;
    background: var(--white);
    padding: 15px 20px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

.play-btn {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: transform 0.2s, background 0.2s;
}

.play-btn:hover {
    background: #1e3822;
    transform: scale(1.05);
}

.reset-btn {
    background: var(--bg-color);
    color: var(--text-color);
    border: 2px solid var(--secondary-color);
    padding: 10px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background 0.2s;
}

.reset-btn:hover {
    background: #e8e4db;
    transform: rotate(-45deg) scale(1.05);
}

.progress-container {
    flex-grow: 1;
    height: 10px;
    background: #e0e0e0;
    border-radius: 5px;
    cursor: pointer;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--secondary-color);
    width: 0%;
    transition: width 0.1s linear;
}

.text-content {
    font-size: 1.6rem;
    line-height: 2.2;
}

.paragraph-wrapper {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 1.5rem;
}

.paragraph-image {
    width: 200px;
    height: 140px;
    object-fit: cover;
    border-radius: 12px;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
    .paragraph-wrapper {
        flex-direction: column;
    }
    .paragraph-image {
        width: 100%;
        height: 200px;
    }
}

.sentence {
    display: block;
    padding: 15px 20px;
    border-radius: 12px;
    margin-bottom: 0;
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.4);
    transition: background 0.3s, transform 0.3s;
}

.sentence.active {
    background: var(--highlight);
    border-right: 4px solid var(--active-highlight);
    transform: scale(1.02);
}

.word {
    display: inline-block;
    position: relative;
    cursor: pointer;
    transition: color 0.2s;
}

.word.has-translation {
    color: var(--primary-color);
    font-weight: 700;
    border-bottom: 1px dashed var(--primary-color);
}

.word.has-translation:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.tooltip {
    position: absolute;
    background: var(--white);
    border: 2px solid var(--secondary-color);
    border-radius: 12px;
    padding: 10px 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    z-index: 100;
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, 10px);
    transition: opacity 0.3s, transform 0.3s;
    text-align: center;
    min-width: 120px;
}

.tooltip.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

.tooltip-arrow {
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -8px;
    border-width: 8px;
    border-style: solid;
    border-color: var(--secondary-color) transparent transparent transparent;
    transition: left 0.3s ease;
}

.tooltip-content {
    display: flex;
    flex-direction: column;
}

.tooltip-content .ar-word {
    font-weight: bold;
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.tooltip-content .en-translation {
    color: #666;
    font-size: 1rem;
    font-family: sans-serif;
}

.quiz-section h2 {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.question-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

.question-text {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option-btn {
    background: var(--bg-color);
    border: 2px solid transparent;
    padding: 10px 15px;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
    text-align: right;
    transition: all 0.2s;
}

.option-btn:hover {
    background: #e8e4db;
}

.option-btn.correct {
    background: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.option-btn.wrong {
    background: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.feedback {
    margin-top: 10px;
    font-size: 0.9rem;
    font-weight: bold;
    display: none;
}

.feedback.show {
    display: block;
}