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

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #ffffff;
    color: #333333;
    line-height: 1.6;
}

/* Color Variables */
:root {
    --primary-blue: #4a6fa5;
    --primary-blue-dark: #3a5a8a;
    --primary-blue-light: #6b8bc4;
    --secondary-purple: #7b68a6;
    --secondary-magenta: #a6689b;
    --accent-yellow: #d4af37;
    --accent-yellow-light: #f4d03f;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #6c757d;
    --success-green: #28a745;
    --warning-orange: #fd7e14;
    --danger-red: #dc3545;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

/* Layout */
.container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Navigation */
.sidebar {
    width: 280px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-purple) 100%);
    color: white;
    padding: 2rem 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    box-shadow: 2px 0 10px var(--shadow);
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
    padding: 0 1.5rem;
}

.logo h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--accent-yellow);
}

.logo p {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 300;
}

.nav-menu {
    list-style: none;
    padding: 0 1rem;
}

.nav-menu li {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: block;
    padding: 1rem 1.5rem;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 400;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
    color: var(--accent-yellow-light);
}

.nav-link:active,
.nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--accent-yellow);
}

.language-toggle {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.lang-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    background-color: var(--white);
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--medium-gray);
}

.page-header h1 {
    color: var(--primary-blue);
    font-size: 2.5rem;
    font-weight: 700;
}

/* Badges */
.demo-badge,
.service-badge,
.error-badge,
.bot-indicator {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.demo-badge {
    background: linear-gradient(45deg, var(--secondary-purple), var(--secondary-magenta));
    color: white;
}

.demo-badge.success {
    background: linear-gradient(45deg, var(--success-green), #20c997);
    color: white;
}

.service-badge {
    background: linear-gradient(45deg, var(--primary-blue), var(--primary-blue-light));
    color: white;
}

.error-badge {
    background: linear-gradient(45deg, var(--danger-red), #e74c3c);
    color: white;
}

.bot-indicator {
    background: linear-gradient(45deg, var(--warning-orange), var(--accent-yellow));
    color: white;
}

/* Status Indicators */
.status-indicator {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1.5rem;
}

.status-indicator.normal {
    background: linear-gradient(135deg, var(--success-green), #20c997);
    color: white;
}

.status-indicator.bot-detected {
    background: linear-gradient(135deg, var(--warning-orange), var(--accent-yellow));
    color: white;
}

/* Content Sections */
.content-section {
    margin-bottom: 2rem;
}

/* Cards */
.welcome-card,
.info-card,
.result-card,
.error-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px var(--shadow);
    margin-bottom: 2rem;
    border: 1px solid var(--medium-gray);
}

.welcome-card h2,
.info-card h2,
.result-card h2,
.error-card h2 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

/* Demo Cards Grid */
.demo-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.demo-card {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid var(--primary-blue);
    transition: all 0.3s ease;
}

.demo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.demo-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.demo-card h4 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

/* Tech Stack */
.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-item {
    background: linear-gradient(45deg, var(--primary-blue), var(--primary-blue-light));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 2px 4px var(--shadow);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    margin: 0.25rem;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-blue), var(--primary-blue-light));
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(45deg, var(--primary-blue-dark), var(--primary-blue));
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-hover);
}

.btn-secondary {
    background: linear-gradient(45deg, var(--secondary-purple), var(--secondary-magenta));
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(45deg, #6a5a8a, #8a5a7f);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-hover);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.cta-buttons,
.demo-buttons,
.next-buttons,
.error-actions,
.learn-more-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Steps */
.steps {
    display: grid;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: 10px;
    border-left: 4px solid var(--secondary-purple);
}

.step-number {
    background: linear-gradient(45deg, var(--secondary-purple), var(--secondary-magenta));
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

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

/* Technical Details */
.tech-grid,
.benefits-grid,
.strategies-grid,
.info-grid,
.analysis-grid,
.explanation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.benefit-item,
.strategy-card,
.info-item,
.analysis-item,
.explanation-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px var(--shadow);
    border-top: 4px solid var(--primary-blue);
}

.benefit-icon,
.strategy-icon,
.analysis-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.strategy-card.block {
    border-top-color: var(--danger-red);
}

.strategy-card.challenge {
    border-top-color: var(--warning-orange);
}

.strategy-card.count {
    border-top-color: var(--primary-blue);
}

.strategy-card.deception {
    border-top-color: var(--secondary-purple);
}

.analysis-item.normal-user {
    border-top-color: var(--success-green);
}

.analysis-item.lucky-bot {
    border-top-color: var(--accent-yellow);
}

/* Pros and Cons */
.pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.pros,
.cons {
    padding: 1rem;
    border-radius: 8px;
}

.pros {
    background: rgba(40, 167, 69, 0.1);
    border-left: 4px solid var(--success-green);
}

.cons {
    background: rgba(220, 53, 69, 0.1);
    border-left: 4px solid var(--danger-red);
}

.pros h4,
.cons h4 {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.pros h4 {
    color: var(--success-green);
}

.cons h4 {
    color: var(--danger-red);
}

/* Code Sections */
.code-section {
    margin: 1.5rem 0;
}

.code-section h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

pre {
    background: #2d3748;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

code {
    background: var(--medium-gray);
    color: var(--primary-blue);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
}

pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

/* Warning and Info Boxes */
.warning-box,
.info-box,
.bot-info-panel,
.user-info-panel {
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.warning-box {
    background: rgba(253, 126, 20, 0.1);
    border-left: 4px solid var(--warning-orange);
}

.info-box {
    background: rgba(74, 111, 165, 0.1);
    border-left: 4px solid var(--primary-blue);
}

.bot-info-panel {
    background: rgba(253, 126, 20, 0.1);
    border-left: 4px solid var(--warning-orange);
}

.user-info-panel {
    background: rgba(40, 167, 69, 0.1);
    border-left: 4px solid var(--success-green);
}

.warning-box h4,
.info-box h4,
.bot-info-panel h3,
.user-info-panel h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Comment System */
.comment-form {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.1);
}

/* Comments List */
.comments-list {
    margin-top: 2rem;
}

.comment-item {
    background: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.comment-item:hover {
    box-shadow: 0 4px 15px var(--shadow);
}

.comment-item.bot-comment {
    border-left: 4px solid var(--warning-orange);
    background: rgba(253, 126, 20, 0.05);
}

.comment-item.normal-comment {
    border-left: 4px solid var(--success-green);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.comment-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bot-badge,
.user-badge {
    font-size: 1.2rem;
}

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

.comment-content {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.comment-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.status-badge {
    background: var(--warning-orange);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge.silent-discard {
    background: var(--secondary-magenta);
}

.no-comments {
    text-align: center;
    padding: 3rem;
    color: var(--dark-gray);
}

.no-comments-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* Statistics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.stat-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px var(--shadow);
    border-top: 4px solid var(--primary-blue);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--dark-gray);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.service-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px var(--shadow);
    border-top: 4px solid var(--primary-blue);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow-hover);
}

.service-card.cloudfront {
    border-top-color: var(--primary-blue);
}

.service-card.waf {
    border-top-color: var(--secondary-purple);
}

.service-card.alb {
    border-top-color: var(--secondary-magenta);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.service-features,
.demo-usage {
    margin: 1.5rem 0;
}

.service-features h4,
.demo-usage h4 {
    color: var(--secondary-purple);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* Protection Layers */
.layers-diagram {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

.layer {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px var(--shadow);
    border-left: 4px solid var(--primary-blue);
}

.layer.layer-1 {
    border-left-color: var(--success-green);
}

.layer.layer-2 {
    border-left-color: var(--warning-orange);
}

.layer.layer-3 {
    border-left-color: var(--secondary-purple);
}

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

/* Architecture Flow */
.architecture-flow {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
    padding: 2rem;
    background: var(--light-gray);
    border-radius: 12px;
}

.flow-step {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px var(--shadow);
    min-width: 120px;
    border-top: 4px solid var(--primary-blue);
}

.step-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.flow-step h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.flow-step p {
    font-size: 0.8rem;
    color: var(--dark-gray);
}

.flow-arrow {
    font-size: 1.5rem;
    color: var(--primary-blue);
    font-weight: bold;
}

/* Cost Optimization */
.cost-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.cost-tip {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px var(--shadow);
    border-left: 4px solid var(--accent-yellow);
}

.cost-tip h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* Error Pages */
.error-icon,
.result-icon {
    font-size: 4rem;
    text-align: center;
    margin-bottom: 1rem;
}

.error-details {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

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

.error-suggestions {
    margin: 1.5rem 0;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .container {
        flex-direction: column;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .demo-cards,
    .tech-grid,
    .benefits-grid,
    .strategies-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .architecture-flow {
        flex-direction: column;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .pros-cons {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons,
    .demo-buttons,
    .next-buttons,
    .error-actions,
    .learn-more-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .sidebar {
        padding: 1rem 0;
    }
    
    .logo h2 {
        font-size: 1.5rem;
    }
    
    .nav-link {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .main-content {
        padding: 0.5rem;
    }
    
    .welcome-card,
    .info-card,
    .result-card,
    .error-card {
        padding: 1.5rem;
    }
    
    .page-header h1 {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .language-toggle,
    .cta-buttons,
    .demo-buttons,
    .next-buttons,
    .error-actions,
    .learn-more-buttons {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .container {
        display: block;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .page-header h1 {
        font-size: 18pt;
    }
    
    .welcome-card,
    .info-card,
    .result-card,
    .error-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-blue: #000080;
        --secondary-purple: #4b0082;
        --secondary-magenta: #8b008b;
        --shadow: rgba(0, 0, 0, 0.3);
        --shadow-hover: rgba(0, 0, 0, 0.4);
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.btn:focus,
.nav-link:focus,
input:focus,
textarea:focus {
    outline: 3px solid var(--accent-yellow);
    outline-offset: 2px;
}