/* Learning Portal Styles */
.learning-body {
    background: linear-gradient(135deg, #FFE66D 0%, #FF6B6B 50%, #4ECDC4 100%);
    min-height: 100vh;
    font-family: var(--font-body);
    overflow-x: hidden;
}

/* Kid-Friendly Navigation */
.learning-nav {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 4px solid var(--primary-color);
}

.learning-nav .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.learning-nav .nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-star {
    font-size: 2rem;
    color: var(--accent-color);
    animation: twinkle 2s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.2) rotate(180deg); }
}

.learning-nav .logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 400;
}

.nav-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.stars-count {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--gradient-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-xl);
    color: var(--white);
    font-weight: 600;
    animation: pulse 2s ease-in-out infinite;
}

.level-badge {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-xl);
    font-weight: 600;
    font-size: 0.9rem;
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--gradient-success);
    color: var(--white);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    transform: scale(1.1);
    background: var(--gradient-primary);
}

/* Welcome Screen */
.welcome-screen {
    display: none;
    min-height: 100vh;
    padding: calc(80px + var(--spacing-xl)) var(--spacing-sm) var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.welcome-screen.active {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.welcome-container {
    text-align: center;
    position: relative;
    z-index: 2;
}

.character-avatar {
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.character-circle {
    width: 120px;
    height: 120px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--white);
    animation: bounce 3s ease-in-out infinite;
}

.character-emoji {
    font-size: 4rem;
    animation: rotate 4s ease-in-out infinite;
}

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

.speech-bubble {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    position: relative;
    box-shadow: var(--shadow-md);
    max-width: 400px;
    margin: 0 auto;
}

.speech-bubble::before {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid var(--white);
}

.speech-bubble p {
    color: var(--dark);
    font-size: 1.2rem;
    margin: 0;
    font-weight: 500;
}

.welcome-actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-learning {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-xl);
    font-family: var(--font-body);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-md);
    min-width: 150px;
    justify-content: center;
}

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

.btn-learning.secondary {
    background: var(--gradient-secondary);
    color: var(--dark);
}

.btn-learning:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.floating-emoji {
    position: absolute;
    font-size: 3rem;
    animation: float 6s ease-in-out infinite;
}

.floating-emoji:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-emoji:nth-child(2) {
    top: 30%;
    right: 15%;
    animation-delay: 1s;
}

.floating-emoji:nth-child(3) {
    bottom: 30%;
    left: 20%;
    animation-delay: 2s;
}

.floating-emoji:nth-child(4) {
    bottom: 20%;
    right: 10%;
    animation-delay: 3s;
}

/* Learning Modules */
.learning-modules {
    display: none;
    padding: calc(80px + var(--spacing-xl)) var(--spacing-sm) var(--spacing-xl);
    min-height: 100vh;
}

.learning-modules.active {
    display: block;
}

.modules-container {
    max-width: 1200px;
    margin: 0 auto;
}

.modules-container h2 {
    text-align: center;
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xl);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.module-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    border: 4px solid transparent;
}

.module-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.module-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    display: block;
    animation: bounce 2s ease-in-out infinite;
}

.module-card h3 {
    color: var(--primary-color);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.module-card p {
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.module-progress {
    margin-bottom: var(--spacing-sm);
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--light-gray);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-success);
    transition: width 0.5s ease;
    border-radius: 6px;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 600;
}

.module-stars {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.back-btn-container {
    text-align: center;
}

.btn-back {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: 2px solid var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin: 0 auto;
}

.btn-back:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Learning Activity */
.learning-activity {
    display: none;
    padding: calc(80px + var(--spacing-lg)) var(--spacing-sm) var(--spacing-lg);
    min-height: 100vh;
}

.learning-activity.active {
    display: block;
}

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

.activity-header {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
}

.activity-title {
    text-align: center;
}

.activity-title h2 {
    color: var(--primary-color);
    font-family: var(--font-heading);
    margin-bottom: var(--spacing-xs);
}

.progress-circle {
    width: 60px;
    height: 60px;
    border: 4px solid var(--light-gray);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--primary-color);
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.activity-stars {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: 600;
}

.activity-content {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    display: none;
}

.activity-content.active {
    display: block;
}

/* Character Helper */
.character-helper {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.character-helper .character-circle {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-sm);
}

.character-helper .character-emoji {
    font-size: 3rem;
}

.character-helper .speech-bubble {
    max-width: 500px;
    font-size: 1.1rem;
}

/* Word Display */
.word-display {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    position: relative;
}

.word-display h3 {
    font-size: 3rem;
    font-family: var(--font-heading);
    margin: 0;
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.sound-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.sound-btn:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: scale(1.1);
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.option-card {
    background: var(--light-gray);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 3px solid transparent;
}

.option-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary-color);
}

.option-card.correct {
    border-color: var(--success-color);
    background: rgba(149, 225, 211, 0.2);
    animation: correctAnswer 0.6s ease;
}

.option-card.incorrect {
    border-color: var(--warning-color);
    background: rgba(243, 139, 168, 0.2);
    animation: incorrectAnswer 0.6s ease;
}

@keyframes correctAnswer {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

@keyframes incorrectAnswer {
    0% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
    100% { transform: translateX(0); }
}

.option-image {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.option-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
}

.activity-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

/* Story Content */
.story-container {
    text-align: center;
}

.story-header h3 {
    color: var(--primary-color);
    font-family: var(--font-heading);
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
}

.story-content {
    margin-bottom: var(--spacing-xl);
}

.story-scene {
    background: var(--gradient-success);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.scene-emoji {
    font-size: 4rem;
    animation: bounce 2s ease-in-out infinite;
}

.story-text {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-lg);
}

.story-text p {
    font-size: 1.3rem;
    line-height: 1.6;
    color: var(--dark);
    margin: 0;
}

.btn-audio {
    background: var(--gradient-secondary);
    color: var(--dark);
    border: none;
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin: 0 auto;
}

.btn-audio:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.story-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-indicator {
    color: var(--gray);
    font-weight: 600;
}

/* Memory Game */
.memory-game {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.card {
    aspect-ratio: 1;
    cursor: pointer;
    perspective: 1000px;
}

.card-inner {
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    position: relative;
}

.card.flipped .card-inner {
    transform: rotateY(180deg);
}

.card-front,
.card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-lg);
    font-size: 2rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.card-front {
    background: var(--gradient-secondary);
    color: var(--dark);
}

.card-back {
    background: var(--gradient-primary);
    color: var(--white);
    transform: rotateY(180deg);
}

.card.matched .card-inner {
    transform: rotateY(180deg);
}

.card.matched .card-back {
    background: var(--gradient-success);
    animation: matchSuccess 0.6s ease;
}

@keyframes matchSuccess {
    0% { transform: rotateY(180deg) scale(1); }
    50% { transform: rotateY(180deg) scale(1.1); }
    100% { transform: rotateY(180deg) scale(1); }
}

.game-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    color: var(--gray);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.game-actions {
    text-align: center;
}

/* Achievement Popup */
.achievement-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.achievement-popup.active {
    display: flex;
}

.achievement-content {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    width: 90%;
    animation: popIn 0.5s ease;
}

@keyframes popIn {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.achievement-animation {
    margin-bottom: var(--spacing-lg);
}

.achievement-emoji {
    font-size: 5rem;
    display: block;
    animation: celebration 1s ease-in-out infinite;
}

@keyframes celebration {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.2) rotate(10deg); }
}

.achievement-content h3 {
    color: var(--primary-color);
    font-family: var(--font-heading);
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.achievement-content p {
    color: var(--gray);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
}

/* Reward Animation */
.reward-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1500;
    display: none;
}

.reward-animation.active {
    display: block;
}

.star-burst {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.star-burst .star {
    position: absolute;
    font-size: 3rem;
    color: var(--accent-color);
    animation: burstOut 1.5s ease-out forwards;
}

.star-burst .star:nth-child(1) {
    animation-delay: 0.1s;
}

.star-burst .star:nth-child(2) {
    animation-delay: 0.2s;
}

.star-burst .star:nth-child(3) {
    animation-delay: 0.3s;
}

.star-burst .star:nth-child(4) {
    animation-delay: 0.4s;
}

.star-burst .star:nth-child(5) {
    animation-delay: 0.5s;
}

@keyframes burstOut {
    0% {
        transform: translate(0, 0) scale(0);
        opacity: 1;
    }
    50% {
        transform: translate(calc(-50vw + 50%), calc(-50vh + 50%)) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(calc(-100vw + 100%), calc(-100vh + 100%)) scale(0);
        opacity: 0;
    }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .learning-nav .nav-container {
        padding: var(--spacing-xs);
    }

    .nav-progress {
        gap: var(--spacing-sm);
    }

    .modules-container h2 {
        font-size: 2rem;
    }

    .modules-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .options-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .activity-header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

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

    .story-navigation {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .memory-game {
        grid-template-columns: repeat(2, 1fr);
    }

    .welcome-actions {
        flex-direction: column;
        align-items: center;
    }

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

@media (max-width: 480px) {
    .learning-nav .logo-text {
        font-size: 1.2rem;
    }

    .character-circle {
        width: 100px;
        height: 100px;
    }

    .character-emoji {
        font-size: 3rem;
    }

    .word-display h3 {
        font-size: 2rem;
    }

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

    .option-image {
        font-size: 3rem;
    }

    .scene-emoji {
        font-size: 3rem;
    }

    .story-text p {
        font-size: 1.1rem;
    }

    .achievement-emoji {
        font-size: 4rem;
    }
}