/* ===== Install Guide Styles ===== */

/* Header */
.guide-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

.back-link {
    display: inline-block;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: white;
}

.guide-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.guide-header .subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 1rem 2rem;
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 150px;
}

.tab-btn:hover {
    border-color: #667eea;
    transform: translateY(-2px);
}

.tab-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

.tab-icon {
    font-size: 1.5rem;
}

.tab-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.tab-desc {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* Main Content */
.guide-main {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

.chapter-content {
    animation: fadeIn 0.3s ease;
}

.chapter-content.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Chapter Header Banner */
.chapter-header-banner {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    text-align: center;
}

.chapter-header-banner h1 {
    font-size: 1.75rem;
    color: #1e293b;
    margin-bottom: 1rem;
}

.chapter-header-banner blockquote {
    font-style: italic;
    color: #64748b;
    margin: 0;
    padding: 0;
    border: none;
}

/* Intro Box */
.intro-box {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    border-left: 4px solid #667eea;
    padding: 1.5rem;
    border-radius: 0 12px 12px 0;
    margin-bottom: 2rem;
}

.intro-box p {
    margin: 0;
    color: #475569;
    line-height: 1.7;
}

/* Content Section */
.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    font-size: 1.5rem;
    color: #1e293b;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e2e8f0;
}

/* Checklist Box */
.checklist-box {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
}

.checklist-box h3 {
    margin-top: 0;
    margin-bottom: 1rem;
}

.checklist {
    list-style: none;
    padding: 0;
    margin: 0;
}

.checklist li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
}

.checklist input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: #667eea;
}

/* Step Card */
.step-card {
    display: flex;
    gap: 1.5rem;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: box-shadow 0.2s;
}

.step-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    color: #1e293b;
}

.step-content p {
    margin: 0.5rem 0;
    color: #475569;
}

.step-content ul, .step-content ol {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
    color: #475569;
}

/* Code Block */
.code-block {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: 8px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
}

.code-block.large {
    font-size: 1.25rem;
    text-align: center;
    padding: 1.5rem;
}

/* Info Box */
.info-box {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.info-box p {
    margin: 0 0 0.5rem 0;
}

.info-box ul {
    margin: 0;
    padding-left: 1.25rem;
}

/* Image Placeholder */
.image-placeholder {
    background: #f1f5f9;
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    padding: 1rem;
    margin: 1rem 0;
    text-align: center;
}

.image-placeholder img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.image-placeholder.large {
    padding: 2rem;
}

/* OS Tabs */
.os-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.os-tab {
    padding: 0.75rem 1.5rem;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.os-tab:hover {
    background: #e2e8f0;
}

.os-tab.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.os-content.hidden {
    display: none;
}

/* Concept Box */
.concept-box {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.concept-box h3 {
    margin-top: 0;
    color: #92400e;
}

.concept-box p {
    color: #78350f;
}

.analogy {
    background: rgba(255, 255, 255, 0.5);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.analogy ul {
    margin: 0.5rem 0 0 0;
    padding-left: 1.25rem;
}

.important-note {
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 1rem;
    border-radius: 8px;
    color: #991b1b;
}

/* Tip Box */
.tip-box {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.tip-box h4 {
    margin-top: 0;
    color: #166534;
}

.tip-box.small {
    padding: 0.75rem 1rem;
}

.tip-box.small p {
    margin: 0;
    font-size: 0.9rem;
}

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.good {
    background: rgba(34, 197, 94, 0.1);
    padding: 1rem;
    border-radius: 8px;
}

.bad {
    background: rgba(239, 68, 68, 0.1);
    padding: 1rem;
    border-radius: 8px;
}

.good p, .bad p {
    margin: 0 0 0.5rem 0;
    font-weight: 600;
}

.good ul, .bad ul {
    margin: 0;
    padding-left: 1.25rem;
}

/* Shortcut Box */
.shortcut-box {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    margin: 1rem 0;
}

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

.key {
    background: #1e293b;
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-family: monospace;
    font-weight: 600;
}

.os-label {
    color: #64748b;
    font-size: 0.85rem;
}

/* Important Box */
.important-box {
    background: #fef2f2;
    border: 2px solid #fecaca;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.important-box p {
    margin: 0 0 0.5rem 0;
}

.important-box ul {
    margin: 0.5rem 0 0 0;
    padding-left: 1.25rem;
}

/* Success Message */
.success-message {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    font-size: 1.1rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

/* Markdown Example */
.markdown-example {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: 8px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
    white-space: pre-wrap;
    margin: 1rem 0;
}

/* Layout Grid */
.layout-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.layout-item {
    background: #f8fafc;
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.layout-item h4 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    color: #1e293b;
}

.layout-item ul {
    margin: 0;
    padding-left: 1.25rem;
    color: #64748b;
    font-size: 0.9rem;
}

/* Chapter Navigation */
.chapter-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e2e8f0;
}

.nav-btn {
    padding: 1rem 2rem;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    text-decoration: none;
    color: #1e293b;
}

.nav-btn:hover:not(.disabled) {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.nav-btn.next {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
}

.nav-btn.next:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

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

/* Comparison Box */
.comparison-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.comparison-item {
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.comparison-item.highlight {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-color: #86efac;
}

.comparison-item h4 {
    margin-top: 0;
    margin-bottom: 1rem;
}

.comparison-item ol {
    margin: 0;
    padding-left: 1.25rem;
}

.comparison-item .result {
    margin-top: 1rem;
    font-weight: 600;
    color: #667eea;
}

.comparison-item.highlight .result {
    color: #16a34a;
}

/* Benefits */
.benefits {
    margin-top: 1rem;
}

.benefits p {
    margin: 0.25rem 0;
}

/* Markdown Card */
.markdown-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.markdown-card.important {
    border-color: #667eea;
    border-width: 2px;
}

.markdown-card h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: #1e293b;
}

.markdown-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.markdown-input, .markdown-output {
    background: #f8fafc;
    padding: 1rem;
    border-radius: 8px;
}

.markdown-input h4, .markdown-output h4 {
    margin: 0 0 0.75rem 0;
    font-size: 0.85rem;
    color: #64748b;
    text-transform: uppercase;
}

.markdown-input pre {
    margin: 0;
    background: #1e293b;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
}

.markdown-output p {
    margin: 0.25rem 0;
}

.markdown-output ul {
    margin: 0;
    padding-left: 1.25rem;
}

.checklist-demo {
    list-style: none;
    padding: 0;
    margin: 0;
}

.checklist-demo li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0;
}

.internal-link {
    color: #667eea;
    text-decoration: none;
    border-bottom: 1px dashed #667eea;
}

/* Practice Box */
.practice-box {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border: 2px solid #93c5fd;
    border-radius: 12px;
    padding: 1.5rem;
}

.practice-box h3 {
    margin-top: 0;
    color: #1e40af;
}

/* Color Guide */
.color-guide {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.color-item {
    padding: 1.5rem;
    border-radius: 12px;
}

.color-item.gray {
    background: #f1f5f9;
    border: 2px solid #94a3b8;
}

.color-item.blue {
    background: #eff6ff;
    border: 2px solid #3b82f6;
}

.color-item h4 {
    margin-top: 0;
}

.color-item code {
    background: rgba(0, 0, 0, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

/* Savings */
.savings {
    text-align: center;
    font-size: 1.1rem;
    color: #16a34a;
    margin: 1.5rem 0;
}

/* Cheatsheet */
.cheatsheet {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: 12px;
    margin: 1.5rem 0;
}

.cheatsheet table {
    width: 100%;
    border-collapse: collapse;
}

.cheatsheet th, .cheatsheet td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #334155;
}

.cheatsheet th {
    color: #94a3b8;
    font-weight: 500;
}

.cheatsheet code {
    background: #334155;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    color: #fbbf24;
}

.cheatsheet-tip {
    text-align: center;
    margin: 1rem 0 0 0;
    color: #fbbf24;
    font-weight: 600;
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: #f8fafc;
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.faq-item h4 {
    margin: 0 0 0.5rem 0;
    color: #1e293b;
}

.faq-item p {
    margin: 0;
    color: #475569;
}

.faq-item code {
    background: #e2e8f0;
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
}

/* Footer */
.guide-footer {
    background: #1e293b;
    color: #94a3b8;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

.guide-footer p {
    margin: 0.25rem 0;
}

/* Responsive */
@media (max-width: 768px) {
    .guide-header h1 {
        font-size: 1.75rem;
    }
    
    .tab-nav {
        gap: 0.5rem;
    }
    
    .tab-btn {
        min-width: auto;
        padding: 0.75rem 1rem;
    }
    
    .tab-desc {
        display: none;
    }
    
    .step-card {
        flex-direction: column;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
    }
    
    .comparison-box,
    .markdown-demo,
    .color-guide,
    .two-column,
    .layout-grid {
        grid-template-columns: 1fr;
    }
    
    .chapter-nav {
        flex-direction: column;
    }
    
    .nav-btn {
        text-align: center;
    }
}