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

body {
    font-family: 'Georgia', 'Palatino', serif;
    background: linear-gradient(135deg, #3a5a40 0%, #588157 50%, #a3b18a 100%);
    background-attachment: fixed;
    min-height: 100vh;
    padding: 20px;
    color: #2d3d2d;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(52, 78, 65, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(42, 68, 55, 0.3) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y="20" font-size="20" opacity="0.03">🌿</text><text x="60" y="70" font-size="15" opacity="0.03">🍃</text><text x="30" y="50" font-size="18" opacity="0.03">🌱</text><text x="80" y="40" font-size="16" opacity="0.03">🍂</text></svg>');
    background-size: 100% 100%, 100% 100%, 300px 300px;
    pointer-events: none;
    z-index: 0;
    animation: forestBreeze 20s ease-in-out infinite;
}

@keyframes forestBreeze {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 0.8;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.container::before {
    content: '🌲';
    position: fixed;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3em;
    opacity: 0.15;
    z-index: -1;
}

.container::after {
    content: '🌲';
    position: fixed;
    right: 10px;
    top: 50%;
    transform: translateY(-50%) scaleX(-1);
    font-size: 3em;
    opacity: 0.15;
    z-index: -1;
}

header {
    background: linear-gradient(to bottom, #dad7cd, #f4f1e8);
    border-radius: 30px;
    padding: 35px;
    margin-bottom: 20px;
    box-shadow:
        0 8px 32px rgba(42, 68, 55, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    text-align: center;
    border: 3px solid rgba(58, 90, 64, 0.4);
    position: relative;
    overflow: hidden;
}

.header-icon {
    font-size: 4em;
    margin-bottom: 10px;
    animation: squirrelBounce 2s ease-in-out infinite;
    filter: drop-shadow(0 4px 8px rgba(58, 90, 64, 0.3));
}

@keyframes squirrelBounce {
    0%, 100% {
        transform: translateY(0px) rotate(-5deg);
    }
    50% {
        transform: translateY(-15px) rotate(5deg);
    }
}

header::before {
    content: '🌿';
    position: absolute;
    top: 15px;
    left: 20px;
    font-size: 2.5em;
    opacity: 0.4;
    animation: vineGrow 3s ease-in-out infinite;
}

header::after {
    content: '🍃';
    position: absolute;
    bottom: 15px;
    right: 20px;
    font-size: 2.5em;
    opacity: 0.4;
    animation: leafFloat 4s ease-in-out infinite;
}

@keyframes vineGrow {
    0%, 100% {
        transform: scale(1) rotate(0deg);
    }
    50% {
        transform: scale(1.1) rotate(-5deg);
    }
}

@keyframes leafFloat {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-8px) rotate(10deg);
    }
}

h1 {
    font-size: 2.5em;
    color: #2d4d35;
    margin-bottom: 10px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-shadow: 2px 2px 4px rgba(106, 133, 106, 0.1);
    transition: color 0.3s ease, transform 0.2s ease;
}

h1:hover {
    color: #4a7555;
    transform: scale(1.02);
}

.subtitle {
    font-size: 1.1em;
    color: #5a6d5a;
    margin-bottom: 15px;
    font-style: italic;
}

.score-board {
    display: flex;
    justify-content: center;
    gap: 30px;
    font-size: 1.1em;
    font-weight: bold;
    color: #6b7d8c;
}

.screen {
    display: none;
    background: linear-gradient(to bottom, #f4f1e8, #fefae0);
    border-radius: 30px;
    padding: 40px;
    box-shadow:
        0 8px 32px rgba(42, 68, 55, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 3px solid rgba(88, 129, 87, 0.4);
    animation: fadeIn 0.5s ease-in;
    position: relative;
}

.screen::before {
    content: '🌿';
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2em;
    opacity: 0.2;
    animation: vineGrow 3s ease-in-out infinite;
}

.screen::after {
    content: '🍂';
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-size: 2em;
    opacity: 0.2;
    animation: leafFloat 4s ease-in-out infinite;
}

.screen.active {
    display: block;
}

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

/* Welcome Screen */
.welcome-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.welcome-content h2 {
    color: #2d4d35;
    font-size: 2em;
    margin-bottom: 20px;
    font-weight: 600;
    text-shadow: 1px 1px 3px rgba(106, 133, 106, 0.1);
}

.learning-goals {
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f3e8 100%);
    padding: 25px;
    border-radius: 20px;
    margin: 30px 0;
    text-align: left;
    border: 1.5px solid rgba(106, 133, 106, 0.2);
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.08);
}

.learning-goals h3 {
    color: #6b7d8c;
    margin-bottom: 15px;
}

.learning-goals ul {
    list-style: none;
}

.learning-goals li {
    padding: 10px 0;
    font-size: 1.1em;
    position: relative;
    padding-left: 25px;
}

.learning-goals li::before {
    content: '🌰';
    position: absolute;
    left: 0;
    font-size: 1em;
    animation: acornWiggle 2s ease-in-out infinite;
}

@keyframes acornWiggle {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-10deg);
    }
    75% {
        transform: rotate(10deg);
    }
}

/* Mission Menu */
.mission-menu {
    margin: 30px 0;
}

.mission-menu h3 {
    color: #2d4d35;
    margin-bottom: 20px;
    font-weight: 600;
}

.mission-card {
    background: linear-gradient(135deg, #fefae0 0%, #f4f1e8 100%);
    border: 3px solid rgba(88, 129, 87, 0.4);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 20px;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.mission-card::before {
    content: '🌱';
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 1.5em;
    opacity: 0.15;
}

.mission-card:hover {
    transform: translateX(8px) scale(1.02);
    box-shadow: 0 8px 24px rgba(42, 68, 55, 0.3);
    border-color: rgba(58, 90, 64, 0.6);
    background: linear-gradient(135deg, #faedcd 0%, #e9edc9 100%);
}

.mission-card:hover::before {
    opacity: 0.3;
    transform: scale(1.2) rotate(15deg);
}

.mission-icon {
    font-size: 3em;
    min-width: 70px;
    text-align: center;
}

.mission-info h4 {
    color: #2d4d35;
    margin-bottom: 8px;
    font-weight: 600;
}

.mission-info p {
    color: #5a6d5a;
    font-size: 0.95em;
    line-height: 1.4;
    margin: 0;
}

.resources-card {
    background: linear-gradient(135deg, #fefae0 0%, #faedcd 100%);
    border-color: rgba(139, 115, 85, 0.4);
}

.resources-card::before {
    content: '📚';
}

.resources-card:hover {
    background: linear-gradient(135deg, #faedcd 0%, #e9edc9 100%);
    border-color: rgba(139, 115, 85, 0.6);
}

.quick-start {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid rgba(106, 133, 106, 0.1);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-collect, .btn-next {
    padding: 15px 30px;
    font-size: 1.1em;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    margin: 10px 5px;
}

.btn-primary {
    background: linear-gradient(135deg, #a3b18a 0%, #588157 100%);
    color: #ffffff;
    border: 2px solid rgba(52, 78, 65, 0.5);
    font-weight: 600;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '🌿';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2em;
    opacity: 0;
    transition: all 0.3s ease;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(42, 68, 55, 0.4);
    background: linear-gradient(135deg, #588157 0%, #3a5a40 100%);
    padding-right: 40px;
}

.btn-primary:hover:not(:disabled)::before {
    opacity: 1;
    right: 10px;
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: linear-gradient(135deg, #e8ebe8 0%, #dce0dc 100%);
    color: #3d4d3d;
    border: 2px solid rgba(106, 133, 106, 0.15);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #dce0dc 0%, #d0d6d0 100%);
    box-shadow: 0 4px 12px rgba(61, 90, 69, 0.15);
}

.btn-collect {
    background: linear-gradient(135deg, #f5faf5 0%, #edf5ed 100%);
    color: #3d5a45;
    width: 100%;
    border: 2px solid #6a856a;
    font-size: 1.2em;
}

.btn-collect:hover {
    background: linear-gradient(135deg, #6a856a 0%, #5a7559 100%);
    color: white;
}

.btn-collect.collecting {
    background: #4caf50;
    color: white;
    border-color: #4caf50;
}

.btn-next {
    background: linear-gradient(135deg, #6a9a6e 0%, #5a8a5e 100%);
    color: white;
    border: 2px solid rgba(90, 122, 93, 0.3);
}

.btn-next:hover {
    background: linear-gradient(135deg, #5a8a5e 0%, #4a7a4e 100%);
    box-shadow: 0 6px 20px rgba(61, 90, 69, 0.3);
}

/* Training Screen */
.training-content h2, .ethics-content h2 {
    color: #2d4d35;
    margin-bottom: 10px;
    font-weight: 600;
    text-shadow: 1px 1px 3px rgba(106, 133, 106, 0.1);
}

.mission-brief {
    color: #666;
    font-size: 1.1em;
    margin-bottom: 30px;
}

.training-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.webcam-container {
    background: #000;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 4/3;
    border: 2px solid rgba(106, 133, 106, 0.2);
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.12);
}

#webcam {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.training-controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.instruction {
    color: #666;
    margin-bottom: 10px;
}

.data-collection {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.class-collector {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sample-count {
    text-align: center;
    color: #666;
    font-size: 0.9em;
}

.training-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.training-actions button {
    flex: 1;
}

.training-status {
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f3e8 100%);
    padding: 15px;
    border-radius: 15px;
    text-align: center;
    border: 1.5px solid rgba(106, 133, 106, 0.2);
}

#status-message {
    color: #3d5a45;
    font-weight: bold;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #6a9a6e 0%, #5a8a5e 100%);
    width: 0%;
    transition: width 0.3s ease;
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.3);
}

/* Prediction Area */
.prediction-area {
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f3e8 100%);
    padding: 25px;
    border-radius: 20px;
    margin: 30px 0;
    border: 1.5px solid rgba(106, 133, 106, 0.2);
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.08);
}

.prediction-result {
    margin-top: 20px;
}

.prediction-label {
    font-size: 2em;
    font-weight: bold;
    color: #2d4d35;
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 1px 1px 3px rgba(106, 133, 106, 0.1);
}

.confidence-bars {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.confidence-bar {
    display: flex;
    align-items: center;
    gap: 10px;
}

.confidence-bar-label {
    min-width: 120px;
    font-weight: bold;
}

.confidence-bar-fill {
    flex: 1;
    height: 30px;
    background: #e0e0e0;
    border-radius: 5px;
    overflow: hidden;
}

.confidence-bar-value {
    height: 100%;
    background: linear-gradient(90deg, #6a9a6e 0%, #5a8a5e 100%);
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    padding: 0 10px;
    color: white;
    font-weight: bold;
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

/* Learning Insight */
.learning-insight {
    background: linear-gradient(135deg, #fef9f0 0%, #fcf5e8 100%);
    padding: 20px;
    border-radius: 15px;
    border-left: 5px solid #b8956a;
    margin: 20px 0;
    box-shadow: 0 4px 16px rgba(184, 149, 106, 0.1);
    position: relative;
}

.learning-insight::before {
    content: '🍃';
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.5em;
    opacity: 0.3;
}

.learning-insight h4 {
    color: #8a7050;
    margin-bottom: 10px;
    font-weight: 600;
}

/* Ethics Screen */
.scenario-container {
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f3e8 100%);
    padding: 30px;
    border-radius: 20px;
    margin-bottom: 20px;
    border: 1.5px solid rgba(106, 133, 106, 0.2);
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.08);
}

.scenario {
    margin-bottom: 30px;
}

.scenario h3 {
    color: #6b7d8c;
    margin-bottom: 15px;
}

.scenario-description {
    font-size: 1.1em;
    line-height: 1.6;
    margin-bottom: 20px;
    padding: 20px;
    background: white;
    border-radius: 10px;
}

.scenario-question {
    font-weight: bold;
    color: #3d5a45;
    margin: 20px 0 15px 0;
}

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

.choice-btn {
    background: white;
    border: 2px solid #6a856a;
    padding: 15px 20px;
    border-radius: 15px;
    cursor: pointer;
    text-align: left;
    font-size: 1em;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 35px;
}

.choice-btn::before {
    content: '🍃';
    position: absolute;
    left: 10px;
    font-size: 1.2em;
    opacity: 0.5;
    transition: all 0.3s ease;
}

.choice-btn:hover {
    background: linear-gradient(135deg, #e9edc9 0%, #ccd5ae 100%);
    transform: translateX(8px);
    box-shadow: 0 4px 12px rgba(42, 68, 55, 0.25);
}

.choice-btn:hover::before {
    transform: rotate(15deg) scale(1.2);
}

.choice-btn.selected {
    background: linear-gradient(135deg, #588157 0%, #3a5a40 100%);
    color: white;
    border-color: #3a5a40;
}

.choice-btn.selected::before {
    content: '🌰';
    opacity: 1;
    animation: acornWiggle 1s ease-in-out infinite;
}

.scenario-feedback {
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f3e8 100%);
    padding: 30px;
    border-radius: 15px;
    margin-top: 20px;
    border: 1.5px solid rgba(106, 133, 106, 0.2);
}

.scenario-feedback.correct {
    background: linear-gradient(135deg, #e8f5e9 0%, #dff0e0 100%);
    border-left: 5px solid #6a9a6e;
}

.scenario-feedback.partial {
    background: linear-gradient(135deg, #fef9f0 0%, #fcf5e8 100%);
    border-left: 5px solid #b8956a;
}

#feedback-title {
    color: #3d5a45;
    margin-bottom: 15px;
    font-weight: 600;
}

#feedback-text {
    line-height: 1.6;
    font-size: 1.1em;
}

/* Completion Screen */
.completion-content {
    text-align: center;
}

.completion-content h2 {
    color: #2d4d35;
    font-size: 2.5em;
    margin-bottom: 30px;
    font-weight: 600;
    text-shadow: 2px 2px 4px rgba(106, 133, 106, 0.1);
}

.achievement-summary {
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f3e8 100%);
    padding: 30px;
    border-radius: 20px;
    margin: 30px auto;
    text-align: left;
    max-width: 600px;
    border: 1.5px solid rgba(106, 133, 106, 0.2);
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.08);
    position: relative;
}

.achievement-summary::before {
    content: '🌳';
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2.5em;
    opacity: 0.15;
}

.achievement-summary h3 {
    color: #6b7d8c;
    margin-bottom: 20px;
}

.achievement-summary ul {
    list-style: none;
}

.achievement-summary li {
    padding: 10px 0;
    font-size: 1.1em;
    position: relative;
    padding-left: 25px;
}

.achievement-summary li::before {
    content: '🌳';
    position: absolute;
    left: 0;
    font-size: 1.2em;
}

.final-score {
    font-size: 2em;
    color: #2d4d35;
    margin: 30px 0;
    font-weight: 600;
    text-shadow: 1px 1px 3px rgba(106, 133, 106, 0.1);
}

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

/* Mission 3: Prompt Engineering Styles */
.prompt-engineering-content {
    max-width: 900px;
    margin: 0 auto;
}

.progress-indicator {
    text-align: center;
    font-size: 1.2em;
    font-weight: bold;
    color: #6b7d8c;
    margin-bottom: 30px;
    padding: 15px;
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f3e8 100%);
    border-radius: 15px;
    border: 1.5px solid rgba(106, 133, 106, 0.2);
}

.pe-level-container {
    background: linear-gradient(135deg, #f0f7f0 0%, #e8f3e8 100%);
    padding: 30px;
    border-radius: 20px;
    margin-bottom: 30px;
    border: 1.5px solid rgba(106, 133, 106, 0.2);
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.08);
}

.pe-level h3 {
    color: #2d4d35;
    margin-bottom: 20px;
    font-weight: 600;
}

.pe-scenario, .pe-task-box, .pe-bad-example {
    background: white;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.pe-task-box {
    border-left: 4px solid #6a9a6e;
    background: linear-gradient(135deg, #f9fdf9 0%, #ffffff 100%);
}

.pe-bad-example {
    border-left: 4px solid #c97064;
    background: linear-gradient(135deg, #fef5f3 0%, #ffffff 100%);
    font-style: italic;
}

.pe-example-box {
    background: linear-gradient(135deg, #e8f5e9 0%, #f1f8f2 100%);
    padding: 20px;
    border-radius: 15px;
    margin-top: 20px;
    border-left: 4px solid #6a9a6e;
}

.pe-example-box h4 {
    color: #2d4d35;
    margin-bottom: 10px;
}

.pe-input-area {
    background: white;
    padding: 30px;
    border-radius: 20px;
    margin-bottom: 30px;
    border: 2px solid rgba(106, 133, 106, 0.2);
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.08);
}

.pe-input-area h3 {
    color: #2d4d35;
    margin-bottom: 15px;
}

#pe-prompt-input {
    width: 100%;
    padding: 15px;
    border: 2px solid rgba(106, 133, 106, 0.3);
    border-radius: 10px;
    font-size: 1.1em;
    font-family: 'Georgia', 'Palatino', serif;
    margin-bottom: 20px;
    resize: vertical;
    min-height: 100px;
}

#pe-prompt-input:focus {
    outline: none;
    border-color: #6a9a6e;
    box-shadow: 0 0 0 3px rgba(106, 154, 110, 0.1);
}

.pe-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.hint-box {
    background: linear-gradient(135deg, #fef9f0 0%, #fcf5e8 100%);
    padding: 20px;
    border-radius: 15px;
    margin-top: 20px;
    border-left: 4px solid #b8956a;
    box-shadow: 0 4px 16px rgba(184, 149, 106, 0.1);
}

.hint-box h4 {
    color: #8a7050;
    margin-bottom: 10px;
}

.pe-feedback {
    background: linear-gradient(135deg, #e8f5e9 0%, #f1f8f2 100%);
    padding: 30px;
    border-radius: 20px;
    margin-bottom: 30px;
    border: 2px solid rgba(106, 154, 110, 0.3);
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.12);
    text-align: center;
}

.pe-feedback h4 {
    color: #2d4d35;
    font-size: 1.8em;
    margin-bottom: 20px;
}

.pe-score-container {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 20px 0;
}

.pe-score-display, .pe-total-score-display {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pe-score-value {
    font-size: 4em;
    font-weight: bold;
    color: #6a9a6e;
    line-height: 1;
    text-shadow: 2px 2px 4px rgba(106, 154, 110, 0.2);
}

.pe-score-label {
    font-size: 1.2em;
    color: #5a7559;
    margin-top: 5px;
}

#pe-feedback-text {
    text-align: left;
    margin: 20px 0;
    line-height: 1.6;
}

#pe-feedback-text p {
    margin-bottom: 10px;
}

.pe-matched-criteria {
    background: white;
    padding: 20px;
    border-radius: 15px;
    margin: 20px 0;
    text-align: left;
}

.pe-criteria-list ul {
    list-style: none;
    margin-top: 10px;
}

.pe-criteria-list li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.pe-criteria-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #6a9a6e;
    font-weight: bold;
}

/* Mission 3 Learning Overview */
.pe-topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.pe-topic-card {
    background: linear-gradient(135deg, #f5faf5 0%, #edf5ed 100%);
    border: 2px solid rgba(106, 133, 106, 0.2);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 4px 16px rgba(61, 90, 69, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pe-topic-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(61, 90, 69, 0.15);
}

.pe-topic-card h4 {
    color: #2d4d35;
    margin-bottom: 10px;
    font-size: 1.2em;
    font-weight: 600;
}

.pe-topic-card p {
    color: #5a6d5a;
    line-height: 1.5;
    margin: 0;
}

.pe-scoring-info {
    background: linear-gradient(135deg, #fef9f0 0%, #fcf5e8 100%);
    border-left: 5px solid #b8956a;
    padding: 25px;
    border-radius: 15px;
    margin: 30px 0;
    box-shadow: 0 4px 16px rgba(184, 149, 106, 0.1);
}

.pe-scoring-info h4 {
    color: #8a7050;
    margin-bottom: 15px;
    font-weight: 600;
}

.pe-scoring-info ul {
    list-style: none;
    padding: 0;
}

.pe-scoring-info li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #5a6d5a;
}

.pe-scoring-info li::before {
    content: '🏆';
    position: absolute;
    left: 0;
}

.pe-start-area {
    text-align: center;
    margin-top: 30px;
}

.pe-start-area .btn-primary {
    font-size: 1.3em;
    padding: 15px 30px;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 0;
    }

    header {
        padding: 20px;
        border-radius: 15px;
        margin-bottom: 10px;
    }

    h1 {
        font-size: 1.8em;
    }

    .score-board {
        flex-direction: row;
        gap: 20px;
        font-size: 1em;
    }

    .screen {
        padding: 20px 15px;
        border-radius: 15px;
    }

    .training-area {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .webcam-container {
        aspect-ratio: 1;
        max-width: 100%;
    }

    .training-controls h3 {
        font-size: 1.1em;
    }

    .btn-collect {
        padding: 18px;
        font-size: 1.1em;
        min-height: 60px;
    }

    .btn-primary, .btn-secondary, .btn-next {
        padding: 18px 25px;
        font-size: 1em;
        width: 100%;
        margin: 8px 0;
    }

    .training-actions {
        flex-direction: column;
        gap: 10px;
    }

    .training-actions button {
        width: 100%;
    }

    .action-buttons {
        flex-direction: column;
        width: 100%;
    }

    .action-buttons button {
        width: 100%;
    }

    .choice-btn {
        padding: 18px;
        font-size: 1em;
        min-height: 60px;
    }

    .scenario-container {
        padding: 20px;
    }

    .learning-insight {
        padding: 15px;
        font-size: 0.95em;
    }

    .achievement-summary {
        padding: 20px;
    }

    .welcome-content {
        padding: 0;
    }

    .learning-goals {
        padding: 20px;
        margin: 20px 0;
    }

    /* Mission menu mobile */
    .mission-card {
        padding: 15px;
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .mission-icon {
        font-size: 2.5em;
        min-width: auto;
    }

    .mission-info {
        width: 100%;
    }

    .mission-info h4 {
        font-size: 1.1em;
    }

    .mission-info p {
        font-size: 0.9em;
    }

    /* Make touch targets larger on mobile */
    button {
        min-height: 50px;
    }

    /* Improve readability on small screens */
    .mission-brief, .instruction {
        font-size: 1em;
    }

    /* Stack confidence bars better on mobile */
    .confidence-bar-label {
        min-width: 100px;
        font-size: 0.9em;
    }

    /* Mission 3 mobile styles */
    .pe-level-container, .pe-input-area, .pe-feedback {
        padding: 20px;
    }

    .pe-actions {
        flex-direction: column;
    }

    .pe-actions button {
        width: 100%;
    }

    #pe-prompt-input {
        font-size: 1em;
    }

    .pe-score-value {
        font-size: 3em;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    h1 {
        font-size: 1.5em;
    }

    .subtitle {
        font-size: 0.95em;
    }

    h2 {
        font-size: 1.4em;
    }

    .screen {
        padding: 15px 10px;
    }

    .btn-collect {
        font-size: 1em;
        padding: 15px;
    }
}