/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #8B9DC3;
    --accent-color: #FFFFFF;
    --text-primary: #FFFFFF;
    --text-secondary: #8B9DC3;
    --bg-primary: #8B9DC3;
    --bg-secondary: #FFFFFF;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--bg-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background-color: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--primary-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.7;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 500px;
}

.hero .container {
    display: flex;
    align-items: center;
    min-height: 500px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    margin-right: 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    flex: 0.8;
    text-align: center;
}

.hero-image img {
    max-width: 300px;
    height: auto;
}

.hero-logo {
    background: transparent;
    border-radius: 50%;
    filter: drop-shadow(0 5px 15px rgba(255, 255, 255, 0.2));
    transition: all 0.3s ease;
}

.hero-logo:hover {
    transform: scale(1.05) rotate(5deg);
    filter: drop-shadow(0 8px 25px rgba(255, 255, 255, 0.3));
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid var(--accent-color);
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--accent-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn-secondary:hover {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--accent-color);
}

/* Features Section */
.features {
    padding: 80px 20px;
    background-color: var(--bg-secondary);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-primary);
    opacity: 0.9;
}

/* Chatbot Section */
.chatbot-section {
    padding: 80px 20px;
    background-color: var(--bg-primary);
}

/* Chat Consent Modal */
.chat-consent-modal {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 2rem;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.consent-content {
    text-align: center;
}

.consent-header {
    margin-bottom: 1.5rem;
}

.consent-header .feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.consent-header h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.consent-content > p {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.warning-box {
    background-color: rgba(255, 193, 7, 0.1);
    border: 2px solid #ffc107;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    text-align: left;
}

.warning-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.warning-icon {
    font-size: 1.2rem;
}

.warning-box strong {
    color: #856404;
}

.warning-box p,
.warning-box li {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.warning-box ul {
    margin: 0.5rem 0 1rem 1.5rem;
}

.consent-agreement {
    margin: 2rem 0;
    text-align: left;
}

.consent-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--primary-color);
}

.consent-checkbox input[type="checkbox"] {
    margin: 0;
    transform: scale(1.2);
    accent-color: var(--primary-color);
}

.consent-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.consent-buttons .btn {
    min-width: 140px;
    padding: 0.75rem 1.5rem;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

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

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

.chatbot-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-primary);
    opacity: 0.8;
    margin-bottom: 3rem;
}

.chatbot-container {
    max-width: 800px;
    margin: 0 auto;
}

.chat-window {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    border: 2px solid var(--accent-color);
    overflow: hidden;
}

.chat-header {
    background-color: var(--primary-color);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.status {
    font-size: 0.875rem;
    opacity: 0.9;
}

.chat-messages {
    height: 400px;
    overflow-y: auto;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
}

.message {
    margin-bottom: 1rem;
    display: flex;
}

.message.user {
    justify-content: flex-end;
}

.message.assistant {
    justify-content: flex-start;
}

.message-content {
    max-width: 70%;
    padding: 1rem 1.25rem;
    border-radius: 12px;
    line-height: 1.5;
}

.message.user .message-content {
    background-color: var(--primary-color);
    color: var(--text-primary);
}

.message.assistant .message-content {
    background-color: var(--accent-color);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.message-content ul,
.message-content ol {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.message-content li {
    margin-bottom: 0.25rem;
}

.message-content strong {
    font-weight: 600;
    color: inherit;
}

.message-content em {
    font-style: italic;
}

.message-content code {
    background-color: rgba(0, 0, 0, 0.1);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.message-content h2,
.message-content h3 {
    margin: 0.5rem 0 0.25rem 0;
    font-weight: 600;
    color: inherit;
}

.message-content h2 {
    font-size: 1.1em;
}

.message-content h3 {
    font-size: 1.05em;
}

.message-content p {
    margin-bottom: 0.5rem;
}

.message-content br {
    line-height: 1.5;
}

.chat-input-container {
    display: flex;
    padding: 1rem;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--primary-color);
}

#chatInput {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--primary-color);
    border-radius: 8px;
    margin-right: 0.5rem;
    font-size: 1rem;
    background-color: var(--accent-color);
    color: var(--primary-color);
}

#chatInput::placeholder {
    color: var(--primary-color);
    opacity: 0.6;
}

.send-button {
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    flex-shrink: 0;
    min-width: 80px;
}

.send-button:hover {
    background-color: var(--accent-color);
    color: var(--primary-color);
    border-color: var(--accent-color);
}

.rate-limit-info {
    padding: 0.5rem 1rem;
    background-color: var(--bg-secondary);
    text-align: center;
    font-size: 0.875rem;
    color: var(--primary-color);
}

/* Quiz Section */
.quiz-section {
    padding: 80px 20px;
    background-color: var(--bg-secondary);
}

/* Quiz Title Row with Back Button */
.quiz-title-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.btn-back {
    background-color: var(--accent-color);
    color: var(--primary-color);
    border: 2px solid var(--accent-color);
    border-radius: 6px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-back:hover {
    background-color: var(--primary-color);
    color: var(--accent-color);
    border-color: var(--primary-color);
}

.btn-back:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.quiz-title-row h3 {
    flex: 1;
    margin: 0;
    font-size: 1.5rem;
}

.quiz-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.episode-selector h3 {
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary-color);
}

.episode-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.episode-card {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.episode-card:hover {
    transform: translateY(-5px);
}

.episode-card h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.episode-card p {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    opacity: 0.9;
    flex-grow: 1;
}

.episode-card .btn {
    margin-top: auto;
}

.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 2rem;
    border-radius: 12px;
}

.quiz-header {
    margin-bottom: 2rem;
}

.quiz-header h3 {
    color: var(--text-primary);
}

.quiz-progress {
    margin-top: 1rem;
}

.progress-bar {
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 0.5rem;
    opacity: 0.3;
}

.progress-fill {
    height: 100%;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.question {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.answer-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.answer-option {
    padding: 1rem 1.5rem;
    background-color: var(--accent-color);
    color: var(--primary-color);
    border: 2px solid var(--accent-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.answer-option:hover {
    background-color: transparent;
    color: var(--accent-color);
}

.answer-option.selected {
    background-color: transparent;
    color: var(--accent-color);
}

.answer-option.correct {
    background-color: var(--accent-color);
    color: var(--primary-color);
    font-weight: bold;
}

.answer-option.incorrect {
    background-color: transparent;
    color: var(--accent-color);
    opacity: 0.6;
}

.quiz-feedback {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.episode-link {
    display: inline-block;
    margin-top: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    opacity: 0.8;
}

.episode-link:hover {
    opacity: 1;
    text-decoration: underline;
}

.quiz-actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.quiz-results {
    text-align: center;
    padding: 2rem;
    color: var(--text-primary);
}

.quiz-results h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Podcast Section */
.podcast-section {
    padding: 80px 20px;
    background-color: var(--bg-primary);
}

.podcast-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.podcast-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.podcast-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s;
    display: flex;
    flex-direction: row;
    align-items: center;
}

.podcast-card:hover {
    transform: translateY(-5px);
}

.podcast-image {
    width: 120px;
    height: 120px;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
    border-radius: 12px;
    margin: 1rem;
}

.podcast-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.podcast-content {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: space-between;
    position: relative;
}

.podcast-content h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.podcast-content p {
    color: var(--primary-color);
    opacity: 0.8;
    margin-bottom: 1rem;
    margin-right: 120px;
    line-height: 1.4;
}

.podcast-content .btn {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    padding: 3rem 0 1rem;
    border-top: 2px solid var(--primary-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 2rem;
    align-items: start;
}


.footer-links h4,
.footer-social h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-links ul,
.social-icons {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 0;
    padding: 0;
}

.footer-links a,
.social-icons a {
    color: var(--primary-color);
    opacity: 0.8;
    text-decoration: none;
    transition: all 0.3s;
    display: block;
    line-height: 1.4;
}

.footer-links a:hover,
.social-icons a:hover {
    opacity: 1;
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--primary-color);
    color: var(--primary-color);
    opacity: 0.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
        min-height: auto;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
        min-height: auto;
    }
    
    .hero-content {
        order: 2;
        max-width: 100%;
        margin-right: 0;
    }
    
    .hero-image {
        order: 1;
        margin-bottom: 1.5rem;
    }
    
    .hero-image img {
        max-width: 200px;
        width: 80%;
    }
    
    .hero h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .hero p {
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
    }
    
    .nav-links {
        display: none;
    }
    
    .features-grid,
    .episode-cards,
    .podcast-grid {
        grid-template-columns: 1fr;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    /* Mobile Chat Consent Modal */
    .chat-consent-modal {
        margin: 0 1rem;
        padding: 1.5rem;
    }
    
    .consent-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .consent-buttons .btn {
        width: 100%;
    }
    
    /* Mobile Chat Input */
    .chat-input-container {
        padding: 0.75rem;
        gap: 0.5rem;
    }
    
    #chatInput {
        padding: 0.75rem;
        font-size: 16px; /* Prevents zoom on iOS */
        border-radius: 6px;
    }
    
    .send-button {
        padding: 0.75rem 1rem;
        min-width: 70px;
        font-size: 0.9rem;
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    /* Chat Window Mobile */
    .chat-window {
        margin: 0 0.5rem;
        border-radius: 8px;
    }
    
    .chat-messages {
        max-height: 400px;
        padding: 0.75rem;
    }
    
    /* Mobile Quiz Back Button */
    .quiz-title-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    
    .btn-back {
        align-self: flex-start;
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .quiz-title-row h3 {
        font-size: 1.25rem;
        line-height: 1.3;
    }
    
    /* Mobile Podcast Cards */
    .podcast-image {
        width: 100px;
        height: 100px;
        margin: 0.75rem;
    }
    
    .podcast-content {
        padding: 0.75rem;
    }
    
    .podcast-content p {
        margin-right: 100px;
        font-size: 0.9rem;
        line-height: 1.3;
    }
    
    .podcast-content .btn {
        bottom: 0.75rem;
        right: 0.75rem;
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .quiz-actions {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
}

/* Extra small mobile devices */
@media (max-width: 480px) {
    .hero {
        padding: 40px 0;
    }
    
    .hero .container {
        gap: 1.5rem;
    }
    
    .hero-image img {
        max-width: 150px;
        width: 70%;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .podcast-card {
        flex-direction: column;
        text-align: center;
    }
    
    .podcast-image {
        width: 120px;
        height: 120px;
        margin: 1rem auto 0.5rem auto;
    }
    
    .podcast-content {
        padding: 1rem;
        position: relative;
    }
    
    .podcast-content p {
        margin-right: 0;
        margin-bottom: 3rem;
    }
    
    .podcast-content .btn {
        position: static;
        margin-top: 1rem;
        width: 100%;
        max-width: 200px;
        align-self: flex-end;
    }
    
    .chat-consent-modal {
        margin: 0 0.5rem;
        padding: 1rem;
    }
    
    .warning-box {
        padding: 1rem;
    }
    
    .consent-header .feature-icon {
        font-size: 2.5rem;
    }
    
    /* Extra small mobile chat improvements */
    .chat-input-container {
        padding: 0.5rem;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    #chatInput {
        flex: 1;
        min-width: 0;
        padding: 0.75rem;
    }
    
    .send-button {
        padding: 0.75rem 1.25rem;
        min-width: 80px;
        background-color: var(--primary-color);
        color: var(--text-primary);
        font-weight: 600;
        border: 2px solid var(--primary-color);
    }
    
    .send-button:hover,
    .send-button:focus {
        background-color: var(--accent-color);
        color: var(--primary-color);
        border-color: var(--accent-color);
    }
}