:root {
    --primary-blue: #0000FF;
    --light-blue: #1E90FF;
    --sky-blue: #87CEEB;
    --cyan: #00FFFF;
    --dark-turquoise: #00CED1;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --dark-gray: #333333;
    --border-gray: #e0e0e0;
    --success-green: #28a745;
    --warning-orange: #ffc107;
    --danger-red: #dc3545;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background: linear-gradient(135deg, var(--sky-blue) 0%, var(--white) 100%);
    min-height: 100vh;
    padding-bottom: 80px;
}

header {
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: var(--white);
    padding: 2rem 1rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.header-content h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.header-content p {
    font-size: 1rem;
    opacity: 0.9;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.content-section {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

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

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

/* Home Section Styles */
.welcome-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    text-align: center;
}

.welcome-card h2 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.welcome-card p {
    margin-bottom: 2rem;
    color: var(--dark-gray);
    font-size: 1.1rem;
}

.quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--light-gray);
    border-radius: var(--border-radius);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-blue);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.cta-button {
    background: linear-gradient(135deg, var(--light-blue), var(--cyan));
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(30, 144, 255, 0.3);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--light-blue);
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

/* Scanner Section Styles */
.scanner-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.scanner-container h2 {
    color: var(--primary-blue);
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
}

.scan-form {
    margin-bottom: 2rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.input-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.input-group input:focus {
    outline: none;
    border-color: var(--light-blue);
    box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.1);
}

.scan-options {
    margin-bottom: 2rem;
}

.scan-options h3 {
    margin-bottom: 1rem;
    color: var(--primary-blue);
    font-size: 1.1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 0.75rem;
    width: 18px;
    height: 18px;
}

.scan-button {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: var(--white);
    border: none;
    padding: 1rem;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.scan-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 255, 0.3);
}

.scan-progress {
    text-align: center;
    margin-bottom: 2rem;
}

.scan-progress h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-gray);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--light-blue), var(--cyan));
    width: 0%;
    transition: width 0.3s ease;
}

.scan-results {
    border-top: 2px solid var(--border-gray);
    padding-top: 2rem;
}

.scan-results h3 {
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    text-align: center;
}

.results-summary {
    text-align: center;
    margin-bottom: 2rem;
}

.privacy-score-display {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--light-gray);
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
}

.score-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-blue);
}

.results-details {
    display: grid;
    gap: 1rem;
}

.result-item {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--light-blue);
}

.result-item.high-risk {
    border-left-color: var(--danger-red);
}

.result-item.medium-risk {
    border-left-color: var(--warning-orange);
}

.result-item.low-risk {
    border-left-color: var(--success-green);
}

/* Recommendations Section Styles */
.recommendations-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.recommendations-container h2 {
    color: var(--primary-blue);
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
}

.recommendations-filter {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-gray);
    background: var(--white);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--light-blue);
    color: var(--white);
    border-color: var(--light-blue);
}

.recommendations-list {
    display: grid;
    gap: 1rem;
}

.recommendation-item {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--light-blue);
}

.recommendation-item.critical {
    border-left-color: var(--danger-red);
}

.recommendation-item.medium {
    border-left-color: var(--warning-orange);
}

.recommendation-item.low {
    border-left-color: var(--success-green);
}

.recommendation-item h4 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.recommendation-item .priority {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.priority.critical {
    background: var(--danger-red);
    color: var(--white);
}

.priority.medium {
    background: var(--warning-orange);
    color: var(--white);
}

.priority.low {
    background: var(--success-green);
    color: var(--white);
}

/* Opt-out Section Styles */
.optout-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.optout-container h2 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.5rem;
}

.optout-intro {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--dark-gray);
}

.broker-search {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.broker-search input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.broker-search button {
    padding: 0.75rem 1rem;
    background: var(--light-blue);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.broker-search button:hover {
    background: var(--primary-blue);
}

.brokers-list {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.broker-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.broker-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.broker-info h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.broker-info p {
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.risk-level {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.risk-level.high {
    background: var(--danger-red);
    color: var(--white);
}

.risk-level.medium {
    background: var(--warning-orange);
    color: var(--white);
}

.risk-level.low {
    background: var(--success-green);
    color: var(--white);
}

.optout-btn {
    background: var(--danger-red);
    color: var(--white);
    border: none;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.optout-btn:hover {
    background: #c82333;
    transform: translateY(-2px);
}

.optout-btn:disabled {
    background: var(--border-gray);
    cursor: not-allowed;
    transform: none;
}

.optout-requests h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.requests-list {
    display: grid;
    gap: 1rem;
}

.request-item {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: var(--border-radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.request-status {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.request-status.pending {
    background: var(--warning-orange);
    color: var(--white);
}

.request-status.completed {
    background: var(--success-green);
    color: var(--white);
}

/* Education Section Styles */
.education-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.education-container h2 {
    color: var(--primary-blue);
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
}

.education-categories {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.category-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border-gray);
    background: var(--white);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.category-btn.active,
.category-btn:hover {
    background: var(--light-blue);
    color: var(--white);
    border-color: var(--light-blue);
}

.education-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.education-card {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.education-card h4 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.education-card .difficulty {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.difficulty.basic {
    background: var(--success-green);
    color: var(--white);
}

.difficulty.advanced {
    background: var(--danger-red);
    color: var(--white);
}

.privacy-tips {
    border-top: 2px solid var(--border-gray);
    padding-top: 2rem;
}

.privacy-tips h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.tip-card {
    background: linear-gradient(135deg, var(--sky-blue), var(--cyan));
    color: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    font-style: italic;
}

/* FAQ Styles */
.faq-section {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: var(--shadow);
}

.faq-section h2 {
    color: var(--primary-blue);
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
}

.faq-container {
    display: grid;
    gap: 1rem;
}

.faq-item {
    border: 2px solid var(--border-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: var(--light-gray);
    border: none;
    padding: 1rem;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-gray);
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--sky-blue);
}

.faq-question[aria-expanded="true"] {
    background: var(--light-blue);
    color: var(--white);
}

.faq-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 1rem;
    background: var(--white);
    border-top: 1px solid var(--border-gray);
    animation: slideDown 0.3s ease;
}

.faq-answer[hidden] {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        padding: 0 1rem;
    }
    to {
        opacity: 1;
        max-height: 200px;
        padding: 1rem;
    }
}

/* Empty State Styles */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--dark-gray);
}

.empty-state i {
    font-size: 3rem;
    color: var(--border-gray);
    margin-bottom: 1rem;
}

.empty-state p {
    font-size: 1.1rem;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 2px solid var(--border-gray);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--dark-gray);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    min-width: 60px;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item span {
    font-size: 0.8rem;
    font-weight: 500;
}

.nav-item.active {
    color: var(--light-blue);
    background: rgba(30, 144, 255, 0.1);
}

.nav-item:hover {
    color: var(--light-blue);
    background: rgba(30, 144, 255, 0.05);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--dark-gray);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-gray);
    margin-top: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content h1 {
        font-size: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .education-cards {
        grid-template-columns: 1fr;
    }
    
    .quick-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .broker-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .recommendations-filter,
    .education-categories {
        justify-content: center;
    }
    
    .filter-btn,
    .category-btn {
        flex: 1;
        min-width: 80px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    main {
        padding: 1rem 0.5rem;
    }
    
    .welcome-card,
    .scanner-container,
    .recommendations-container,
    .optout-container,
    .education-container,
    .faq-section {
        padding: 1.5rem;
        margin-left: 0.5rem;
        margin-right: 0.5rem;
    }
    
    .quick-stats {
        grid-template-columns: 1fr;
    }
    
    .nav-item span {
        font-size: 0.7rem;
    }
    
    .nav-item i {
        font-size: 1rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.hidden { display: none; }
.visible { display: block; }