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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-sidebar: #1f2937;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

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

/* Sidebar Styles */
.sidebar {
    width: 320px;
    background: var(--bg-sidebar);
    color: #ffffff;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.sidebar-content {
    padding: 2rem 1.5rem;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #ffffff;
    text-align: center;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.nav-section,
.download-section,
.install-steps {
    margin-bottom: 2rem;
}

.nav-section h2,
.download-section h2,
.install-steps h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

.nav-links {
    list-style: none;
}

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

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0.5rem;
    text-decoration: none;
    color: #ffffff;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateX(4px);
}

.nav-link .icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.nav-link strong {
    display: block;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.nav-link small {
    display: block;
    font-size: 0.75rem;
    opacity: 0.8;
}

.download-box {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.download-box h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.download-box p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.download-btn {
    display: inline-block;
    background: var(--primary-color);
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    width: 100%;
}

.download-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.install-steps {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0.75rem;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.steps-list {
    list-style: none;
    counter-reset: step-counter;
}

.steps-list li {
    counter-increment: step-counter;
    margin-bottom: 1rem;
    padding-left: 2rem;
    position: relative;
    font-size: 0.875rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
}

.steps-list li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    background: var(--primary-color);
    color: #ffffff;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.75rem;
}

.steps-list code {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-family: 'Monaco', 'Courier New', monospace;
    color: #60a5fa;
    word-break: break-all;
}

/* Main Content Styles */
.main-content {
    flex: 1;
    padding: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.welcome-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.welcome-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Video Section */
.video-section {
    margin-bottom: 3rem;
}

.video-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    background: #000;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
}

.video-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.video-placeholder p {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.video-placeholder small {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Features Section */
.features-section {
    margin-bottom: 3rem;
}

.features-section h2 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.feature-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.feature-link:hover {
    color: var(--primary-dark);
}

/* Getting Started Section */
.getting-started-section {
    margin-bottom: 3rem;
}

.getting-started-section h2 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.guide-step {
    display: flex;
    gap: 1.5rem;
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.step-number {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    background: var(--primary-color);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Support Section */
.support-section {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    text-align: center;
}

.support-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.support-section p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.support-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.support-link {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: #ffffff;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.2s;
}

.support-link:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Info Boxes */
.info-box {
    background: #eff6ff;
    border-left: 4px solid var(--primary-color);
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 0.5rem;
}

.info-box strong {
    color: var(--primary-dark);
}

.info-box code {
    background: rgba(0, 0, 0, 0.05);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    font-family: 'Monaco', 'Courier New', monospace;
    color: var(--primary-dark);
}

/* Section Intro */
.section-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

/* Extension Features Section */
.extension-features-section {
    margin-bottom: 3rem;
}

.extension-features-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.feature-detail-card {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.feature-detail-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.feature-detail-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-detail-card p {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-size: 0.9375rem;
}

.feature-detail-card ul {
    list-style: none;
    padding-left: 0;
}

.feature-detail-card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.feature-detail-card ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.feature-detail-card ul li strong {
    color: var(--text-primary);
}

/* Workflows Section */
.workflows-section {
    margin-bottom: 3rem;
}

.workflows-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.workflow-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.workflow-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.workflow-steps {
    list-style: none;
    counter-reset: workflow-counter;
    padding-left: 0;
}

.workflow-steps li {
    counter-increment: workflow-counter;
    margin-bottom: 1rem;
    padding-left: 2.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.workflow-steps li::before {
    content: counter(workflow-counter);
    position: absolute;
    left: 0;
    top: 0;
    background: var(--primary-color);
    color: #ffffff;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}

.workflow-steps ul {
    margin-top: 0.5rem;
    margin-left: 1.5rem;
    list-style: disc;
}

.workflow-steps ul li {
    padding-left: 0.5rem;
    margin-bottom: 0.5rem;
}

.workflow-steps ul li::before {
    display: none;
}

.workflow-steps code {
    background: rgba(0, 0, 0, 0.05);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    font-family: 'Monaco', 'Courier New', monospace;
    color: var(--primary-dark);
}

.workflow-steps pre {
    background: #1f2937;
    color: #ffffff;
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin: 0.75rem 0;
    font-size: 0.875rem;
    line-height: 1.6;
}

.workflow-steps pre code {
    background: transparent;
    color: #ffffff;
    padding: 0;
}

/* Troubleshooting Section */
.troubleshooting-section {
    margin-bottom: 3rem;
}

.troubleshooting-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.troubleshooting-item {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    border-left: 4px solid #ef4444;
    margin-bottom: 1.5rem;
}

.troubleshooting-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.troubleshooting-item p {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.troubleshooting-item p strong {
    color: var(--text-primary);
}

.troubleshooting-item ul {
    margin-top: 0.75rem;
    padding-left: 1.5rem;
}

.troubleshooting-item ul li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.troubleshooting-item code {
    background: rgba(0, 0, 0, 0.05);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    font-family: 'Monaco', 'Courier New', monospace;
    color: var(--primary-dark);
}

/* FAQ Section */
.faq-section {
    margin-bottom: 3rem;
}

.faq-section h2 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.faq-item {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    transition: all 0.2s;
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
}

.faq-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.faq-item ul {
    margin-top: 0.5rem;
    padding-left: 1.5rem;
}

.faq-item ul li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.faq-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.faq-item a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

    .main-content {
        padding: 2rem 1rem;
    }

    .welcome-header h1 {
        font-size: 2rem;
    }

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

    .guide-step {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .features-detailed {
        grid-template-columns: 1fr;
    }

    .support-links {
        flex-direction: column;
    }

    .support-link {
        text-align: center;
    }

    .workflow-card {
        padding: 1.5rem;
    }

    .troubleshooting-item,
    .faq-item {
        padding: 1rem;
    }
}