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

:root {
    --medical-teal: #0891b2;
    --medical-teal-dark: #0e7490;
    --medical-teal-light: #22d3ee;
    --medical-blue: #0284c7;
    --medical-navy: #1e3a5f;
    --medical-green: #059669;
    --medical-red: #dc2626;
    --bg-light: #f0f9ff;
    --bg-white: #ffffff;
    --text-dark: #1e293b;
    --text-gray: #64748b;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--medical-navy) 0%, var(--medical-teal-dark) 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    color: white;
    font-size: 2.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    margin-bottom: 15px;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.main-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-link {
    display: inline-block;
    padding: 12px 25px;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.nav-link.active {
    background: white;
    color: var(--medical-teal-dark);
    border-color: white;
    font-weight: 600;
}

.subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
}

.score-board {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.score {
    background: white;
    padding: 15px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.score .label {
    display: block;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 5px;
}

.score .value {
    font-size: 2rem;
    font-weight: bold;
}

.score.correct .value {
    color: var(--medical-green);
}

.score.incorrect .value {
    color: var(--medical-red);
}

.game-area {
    display: flex;
    gap: 30px;
    background: var(--bg-white);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.body-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(180deg, var(--bg-light) 0%, #e0f2fe 100%);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid #e0f2fe;
}

.human-body {
    width: 100%;
    max-width: 300px;
    height: auto;
}

.body-part {
    fill: #fcd9bd;
    stroke: #d4a574;
    stroke-width: 1.5;
    cursor: pointer;
    transition: all 0.3s ease;
}

.body-part:hover {
    fill: var(--medical-teal-light);
    stroke: var(--medical-teal);
    transform: scale(1.05);
    filter: drop-shadow(0 0 8px rgba(8, 145, 178, 0.5));
}

.body-part.selected {
    fill: var(--medical-teal);
    stroke: var(--medical-teal-dark);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { filter: drop-shadow(0 0 5px rgba(8, 145, 178, 0.5)); }
    50% { filter: drop-shadow(0 0 15px rgba(8, 145, 178, 0.8)); }
}

.quiz-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 350px;
}

.instruction {
    text-align: center;
    color: #666;
    font-size: 1.2rem;
}

.question-container {
    text-align: center;
}

.question-label {
    font-size: 1rem;
    color: #888;
    margin-bottom: 10px;
}

.question-word {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--text-dark);
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, var(--bg-light) 0%, #e0f2fe 100%);
    border-radius: 12px;
    border: 1px solid #bae6fd;
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.option-btn {
    padding: 20px;
    font-size: 1.3rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.option-btn:hover {
    border-color: var(--medical-teal);
    background: var(--bg-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(8, 145, 178, 0.2);
}

.option-btn.correct {
    background: var(--medical-green);
    border-color: var(--medical-green);
    color: white;
    animation: correctPop 0.5s ease;
}

.option-btn.incorrect {
    background: var(--medical-red);
    border-color: var(--medical-red);
    color: white;
    animation: shake 0.5s ease;
}

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

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.feedback-message {
    text-align: center;
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    font-size: 1.2rem;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feedback-message.show {
    opacity: 1;
}

.feedback-message.correct {
    background: var(--medical-green);
    color: white;
}

.feedback-message.incorrect {
    background: var(--medical-red);
    color: white;
}

/* Patient Assessment Page Styles */
.assessment-area {
    flex-direction: column;
}

.category-panel {
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 2px solid #eee;
    margin-bottom: 20px;
}

.category-panel h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.category-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.category-btn {
    padding: 15px 30px;
    font-size: 1.1rem;
    border: 2px solid var(--medical-teal);
    border-radius: 10px;
    background: white;
    color: var(--medical-teal);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.category-btn:hover {
    background: var(--medical-teal);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(8, 145, 178, 0.3);
}

.category-btn.active {
    background: var(--medical-teal);
    color: white;
}

.phrase-reference {
    margin-top: 30px;
    padding: 20px;
    background: linear-gradient(135deg, var(--bg-light) 0%, #e0f2fe 100%);
    border-radius: 12px;
    text-align: left;
    border: 1px solid #bae6fd;
}

.phrase-reference h3 {
    color: #333;
    margin-bottom: 15px;
    text-align: center;
}

.phrase-reference ul {
    list-style: none;
    padding: 0;
}

.phrase-reference li {
    padding: 10px 0;
    border-bottom: 1px solid #ddd;
    font-size: 1.1rem;
}

.phrase-reference li:last-child {
    border-bottom: none;
}

.assessment-question {
    font-size: 1.5rem;
    line-height: 1.4;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-full {
    width: 100%;
    text-align: left;
    padding: 18px 25px;
    font-size: 1.1rem;
}

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

    header h1 {
        font-size: 1.8rem;
    }

    .question-word {
        font-size: 1.8rem;
    }

    .options-grid {
        grid-template-columns: 1fr;
    }

    .score-board {
        gap: 15px;
    }

    .score {
        padding: 10px 20px;
    }

    .category-buttons {
        flex-direction: column;
        align-items: center;
    }

    .category-btn {
        width: 100%;
        max-width: 250px;
    }

    .assessment-question {
        font-size: 1.2rem;
    }

    .nav-link {
        padding: 10px 18px;
        font-size: 0.9rem;
    }
}

/* Vocabulary Library Styles */
.vocabulary-container {
    max-width: 1200px;
}

.vocabulary-content {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.section-title {
    text-align: center;
    color: #333;
    font-size: 2rem;
    margin-bottom: 10px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.vocab-section {
    margin-bottom: 50px;
}

.vocab-category {
    color: var(--medical-teal-dark);
    font-size: 1.5rem;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--medical-teal);
}

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

.vocab-card {
    background: linear-gradient(135deg, var(--bg-light) 0%, #e0f2fe 100%);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0f2fe;
}

.vocab-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(8, 145, 178, 0.2);
    border-color: var(--medical-teal-light);
}

.vocab-english {
    font-size: 1.2rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
}

.vocab-spanish {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--medical-teal);
    margin-bottom: 8px;
}

.vocab-pronunciation {
    font-size: 0.95rem;
    color: #888;
    font-style: italic;
}

.phrase-breakdown, .sentence-card {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    margin-bottom: 25px;
    overflow: hidden;
}

.phrase-header {
    background: linear-gradient(135deg, var(--medical-teal-dark) 0%, var(--medical-navy) 100%);
    color: white;
    padding: 20px;
    text-align: center;
}

.phrase-english, .sentence-english {
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 8px;
}

.phrase-spanish, .sentence-spanish {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 8px;
}

.phrase-pronunciation, .sentence-pronunciation {
    font-size: 1rem;
    font-style: italic;
    opacity: 0.9;
}

.sentence-card {
    padding: 25px;
}

.sentence-english {
    color: #333;
}

.sentence-spanish {
    color: var(--medical-teal);
    margin-bottom: 5px;
}

.sentence-pronunciation {
    color: #888;
    margin-bottom: 15px;
}

.breakdown-box {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-top: 10px;
}

.breakdown-box h4 {
    color: #333;
    margin-bottom: 12px;
    font-size: 1rem;
}

.breakdown-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.breakdown-box li {
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
    font-size: 1rem;
    color: #555;
}

.breakdown-box li:last-child {
    border-bottom: none;
}

.breakdown-box li strong {
    color: var(--medical-teal);
}

@media (max-width: 768px) {
    .vocabulary-content {
        padding: 20px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .vocab-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }

    .vocab-card {
        padding: 15px;
    }

    .phrase-header {
        padding: 15px;
    }

    .phrase-english, .sentence-english {
        font-size: 1.1rem;
    }

    .phrase-spanish, .sentence-spanish {
        font-size: 1.2rem;
    }
}