/* ==========================================================================
   FBH Bot Landing Page - CSS stylesheet
   Theme: Premium Light Theme (matches WPF ManagerBot UI)
   ========================================================================== */

/* Design System Variables */
:root {
    --font-primary: 'Inter', sans-serif;
    --font-title: 'Outfit', sans-serif;
    
    /* Light Theme Palette */
    --bg-page: #F6F7FA;
    --bg-surface: #FFFFFF;
    --border-color: #E5E7EB;
    --border-hover: #D1D5DB;
    
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-muted: #6B7280;
    
    /* Accent Colors */
    --primary: #1976D2;
    --primary-hover: #1565C0;
    --primary-light: #E3F2FD;
    
    --success: #2E7D32;
    --success-hover: #1B5E20;
    --success-light: #E8F5E9;
    
    --accent: #00A896;
    --accent-light: #E0F2F1;
    
    --mule: #7C3AED;
    --mule-light: #F3E8FF;
    
    --idle: #9CA3AF;
    --idle-light: #F3F4F6;
    
    --warning: #ED8936;
    --error: #E53E3E;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-title);
    font-weight: 700;
    color: var(--text-primary);
}

/* Button Component */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn i {
    width: 18px;
    height: 18px;
    margin-right: 8px;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.2);
}

.btn-secondary {
    background-color: #FFFFFF;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #F9FAFB;
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn-large {
    padding: 14px 28px;
    font-size: 1.05rem;
}

.badge {
    background-color: var(--primary);
    color: #FFFFFF;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
    margin-left: 6px;
    text-transform: uppercase;
}

/* Header Navbar */
.navbar-header {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 70px;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: baseline;
}

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

.logo-sub {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-left: 4px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    padding: 8px 0;
}

.nav-links a:hover {
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
}

/* Mobile Nav Dropdown */
.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
    z-index: 999;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.mobile-link {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

/* Hero Section */
.hero-section {
    padding-top: 130px;
    padding-bottom: 80px;
    overflow: hidden;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 48px;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 820px;
}

.promo-tag {
    display: inline-flex;
    align-items: center;
    background-color: var(--primary-light);
    color: var(--primary);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(25, 118, 210, 0.15);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary);
    border-radius: 50%;
    margin-right: 8px;
    display: inline-block;
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(25, 118, 210, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(25, 118, 210, 0); }
    100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(25, 118, 210, 0); }
}

.hero-title {
    font-size: 3.25rem;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.18rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 720px;
    line-height: 1.6;
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
    justify-content: center;
    width: 100%;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    justify-content: center;
    width: 100%;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-title);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background-color: var(--border-color);
}

/* WPF UI CSS Mockup */
.wpf-window {
    background-color: #F6F7FA;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.12);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    user-select: none;
    max-width: 960px;
    width: 100%;
    margin: 0 auto;
}

/* Title Bar */
.wpf-titlebar {
    background-color: #FFFFFF;
    border-bottom: 1px solid var(--border-color);
    padding: 8px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wpf-logo {
    display: flex;
    align-items: center;
    gap: 6px;
}

.wpf-logo-icon {
    background-color: var(--primary);
    color: #FFFFFF;
    font-weight: 700;
    font-size: 0.75rem;
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
}

.wpf-logo-text {
    font-size: 0.8rem;
    color: var(--text-primary);
    font-weight: 500;
}

.wpf-window-controls {
    display: flex;
    gap: 8px;
}

.control-btn {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.control-btn.min { background-color: #E2E8F0; }
.control-btn.max { background-color: #E2E8F0; }
.control-btn.close { background-color: #FCA5A5; }

/* Window Body */
.wpf-body {
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    background-color: #F6F7FA;
}

/* Image Wrapper & Screenshot */
.wpf-image-wrapper {
    position: relative;
    width: 100%;
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    aspect-ratio: auto;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-in;
}

.wpf-screenshot {
    width: 100%;
    height: auto;
    display: block;
    transition: opacity 0.2s ease;
}

.wpf-screenshot:hover {
    opacity: 0.95;
}

/* Vector Placeholder Graphic */
.wpf-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 0;
    left: 0;
    background-color: #FFFFFF;
}

.wpf-placeholder-graphic {
    flex: 1.2;
    display: flex;
    background-color: #F8FAFC;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
    padding: 10px;
    gap: 10px;
}

.ph-sidebar {
    width: 25%;
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.ph-line {
    height: 6px;
    background-color: #E2E8F0;
    border-radius: 3px;
    width: 100%;
}

.ph-line.short {
    width: 60%;
    background-color: var(--primary-light);
}

.ph-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ph-header-blocks {
    display: flex;
    gap: 8px;
}

.ph-block {
    height: 18px;
    border-radius: 4px;
    flex: 1;
}

.ph-block.ph-green { background-color: #DCFCE7; border: 1px solid #BBF7D0; }
.ph-block.ph-blue { background-color: #DBEAFE; border: 1px solid #BFDBFE; }

.ph-table {
    flex: 1;
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    padding: 6px;
    gap: 6px;
}

.ph-row {
    display: flex;
    gap: 8px;
    height: 10px;
    align-items: center;
}

.ph-row.header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 4px;
    height: 12px;
}

.ph-cell {
    height: 6px;
    background-color: #F1F5F9;
    border-radius: 2px;
    flex: 1;
}

.ph-row.header .ph-cell {
    background-color: #CBD5E1;
}

.wpf-placeholder-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    text-align: center;
}

.placeholder-icon {
    width: 24px;
    height: 24px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.placeholder-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.placeholder-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
    max-width: 280px;
    line-height: 1.4;
}

.placeholder-desc code {
    background-color: #F1F5F9;
    padding: 1px 4px;
    border-radius: 3px;
    font-family: monospace;
    color: #0F172A;
}

/* Console Logs */
.wpf-logs {
    background-color: #0F172A;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    font-family: 'Consolas', 'Courier New', Courier, monospace;
    overflow-x: auto;
}

.log-title {
    color: #94A3B8;
    font-size: 0.72rem;
    font-weight: 600;
    margin-bottom: 6px;
    border-bottom: 1px solid #1E293B;
    padding-bottom: 4px;
}

.log-lines {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 85px;
    overflow-y: auto;
}

.log-line {
    font-size: 0.7rem;
    color: #E2E8F0;
    white-space: nowrap;
}

.log-line.text-success { color: #4ADE80; }
.log-line.text-info { color: #38BDF8; }
.log-line.text-warning { color: #FBBF24; }

/* Features Section */
.features-section {
    padding: 100px 0;
    background-color: #FFFFFF;
}

.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 64px auto;
}

.section-tag {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: var(--bg-page);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    transition: all 0.25s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    background-color: #FFFFFF;
    box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.08);
    border-color: var(--primary);
}

.feature-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon-wrapper i {
    width: 24px;
    height: 24px;
}

.feature-icon-wrapper.blue { background-color: var(--primary-light); color: var(--primary); }
.feature-icon-wrapper.green { background-color: var(--accent-light); color: var(--accent); }
.feature-icon-wrapper.orange { background-color: #FEF3C7; color: #D97706; }
.feature-icon-wrapper.red { background-color: #FEE2E2; color: #DC2626; }
.feature-icon-wrapper.purple { background-color: var(--mule-light); color: var(--mule); }
.feature-icon-wrapper.cyan { background-color: #E0F2FE; color: #0284C7; }

.feature-card-title {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.feature-card-text {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* Workflow Steps */
.workflow-section {
    padding: 100px 0;
}

.workflow-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 40px;
}

.step-card {
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px;
    flex: 1;
    text-align: center;
    position: relative;
}

.step-number {
    width: 36px;
    height: 36px;
    background-color: var(--primary);
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 16px auto;
    font-family: var(--font-title);
}

.step-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.step-text {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.5;
}

.step-arrow {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-arrow i {
    width: 24px;
    height: 24px;
}

/* Tutorial Section */
.tutorial-section {
    padding: 40px 0 80px 0;
}

.tutorial-card {
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 48px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.03);
}

.tutorial-badge {
    display: inline-block;
    background-color: var(--warning);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 999px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.tutorial-title {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.tutorial-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto 32px auto;
    line-height: 1.6;
}

.tutorial-footer-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* CTA Section */
.cta-section {
    background-color: var(--primary);
    color: #FFFFFF;
    padding: 80px 0;
    text-align: center;
}

.cta-container {
    max-width: 680px;
}

.cta-title {
    color: #FFFFFF;
    font-size: 2.25rem;
    margin-bottom: 16px;
}

.cta-desc {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

.cta-btn {
    background-color: #FFFFFF;
    color: var(--primary);
}

.cta-btn:hover {
    background-color: #F8FAFC;
    color: var(--primary-hover);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* Footer Section */
.footer {
    background-color: #0F172A;
    color: #94A3B8;
    padding: 60px 0 40px 0;
    font-size: 0.9rem;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    align-items: flex-start;
}

.footer-logo-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-logo {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 800;
    color: #FFFFFF;
}

.footer-tagline {
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    justify-content: flex-end;
    gap: 24px;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.footer-disclaimer {
    grid-column: span 2;
    border-top: 1px solid #1E293B;
    padding-top: 24px;
    margin-top: 24px;
    font-size: 0.78rem;
    color: #64748B;
    line-height: 1.6;
}

.footer-copyright {
    grid-column: span 2;
    text-align: center;
    font-size: 0.78rem;
    color: #475569;
    margin-top: 20px;
}

/* Scrollbar styles for wpf controls */
.wpf-datagrid-container::-webkit-scrollbar,
.log-lines::-webkit-scrollbar {
    width: 6px;
}

.wpf-datagrid-container::-webkit-scrollbar-track,
.log-lines::-webkit-scrollbar-track {
    background: transparent;
}

.wpf-datagrid-container::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: 3px;
}

.log-lines::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 3px;
}

/* Responsive Layouts */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta-group {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        width: 100%;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .workflow-steps {
        flex-direction: column;
        gap: 24px;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-disclaimer, .footer-copyright {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .wpf-window {
        max-width: 100%;
    }
    
    .grid-checkboxes {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .wpf-datagrid-container {
        overflow-x: auto;
    }
    
    .wpf-datagrid {
        min-width: 480px;
    }
}

/* ==========================================================================
   Lightbox Modal for Image Zooming
   ========================================================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.9);
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
    backdrop-filter: blur(4px);
    padding: 24px;
}

.modal-content {
    max-width: 95%;
    max-height: 90%;
    border-radius: 8px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: scale(0.97);
    transition: transform 0.2s ease-in-out;
    cursor: default;
}

.modal:hover .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 28px;
    color: #94A3B8;
    font-size: 2.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.15s ease;
}

.modal-close:hover {
    color: #FFFFFF;
}

#modal-caption {
    position: absolute;
    bottom: 20px;
    color: #64748B;
    font-size: 0.85rem;
}

/* ==========================================================================
   Setup & Tutorial Guide Tabs Layout
   ========================================================================== */
.tutorial-tabs-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.03);
    margin-top: 40px;
}

.tut-tab-buttons {
    display: flex;
    flex-direction: column;
    background-color: #F8FAFC;
    border-right: 1px solid var(--border-color);
    padding: 16px;
    gap: 8px;
}

.tut-tab-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: transparent;
    border: none;
    border-radius: 10px;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.tut-tab-btn:hover {
    background-color: #F1F5F9;
}

.tut-tab-btn.active {
    background-color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.tut-tab-btn i {
    width: 24px;
    height: 24px;
    stroke-width: 2;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.tut-tab-btn.active i {
    color: var(--primary);
}

.tut-btn-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tut-btn-text strong {
    font-family: var(--font-title);
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: color 0.2s ease;
}

.tut-tab-btn.active .tut-btn-text strong {
    color: var(--primary);
}

.tut-btn-text span {
    font-size: 0.76rem;
    color: var(--text-muted);
}

.tut-tab-content {
    padding: 40px;
    background-color: #FFFFFF;
}

.tut-tab-pane {
    display: none;
    flex-direction: column;
    animation: paneFadeIn 0.3s ease;
}

.tut-tab-pane.active {
    display: flex;
}

@keyframes paneFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.pane-title {
    font-size: 1.6rem;
    margin-bottom: 8px;
    font-family: var(--font-title);
}

.pane-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.prereq-list, .step-guide-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.prereq-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.prereq-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.prereq-icon i {
    width: 18px;
    height: 18px;
}

.prereq-details {
    flex: 1;
    min-width: 0;
}

.prereq-details h4 {
    font-size: 1.05rem;
    margin-bottom: 4px;
    font-family: var(--font-title);
}

.prereq-details p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.prereq-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 6px;
}

.action-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.action-hint code {
    background-color: #F1F5F9;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    color: var(--text-primary);
}

.step-guide-block {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.step-block-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-title);
    flex-shrink: 0;
    font-size: 0.9rem;
}

.step-block-text {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.step-block-text h4 {
    font-size: 1.05rem;
    margin-bottom: 4px;
    font-family: var(--font-title);
}

.step-block-text p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.alert-box {
    display: flex;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.82rem;
    line-height: 1.4;
    border: 1px solid transparent;
}

.alert-info {
    background-color: #FFFBEB;
    border-color: #FDE68A;
    color: #92400E;
}

.alert-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: #B45309;
}

/* Tab responsive styling */
@media (max-width: 900px) {
    .tutorial-tabs-container {
        grid-template-columns: 1fr;
    }
    
    .tut-tab-buttons {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        flex-direction: row;
        overflow-x: auto;
        padding: 12px;
    }
    
    .tut-tab-btn {
        flex-shrink: 0;
        width: auto;
        padding: 10px 16px;
        gap: 8px;
    }
    
    .tut-btn-text span {
        display: none;
    }
    
    .tut-tab-content {
        padding: 24px;
    }
}

/* Language Selector */
.lang-selector {
    position: relative;
    display: inline-block;
    margin-left: 15px;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.lang-btn:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
    min-width: 130px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
    z-index: 100;
    padding: 6px 0;
}

.lang-selector:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown a {
    display: block;
    padding: 10px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.lang-dropdown a:hover {
    background: rgba(99, 102, 241, 0.08);
    color: var(--primary);
}

@media (max-width: 768px) {
    .lang-selector {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
    }
    .lang-btn {
        width: 100%;
        justify-content: center;
    }
    .lang-dropdown {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 0;
        margin-top: 5px;
    }
    .lang-dropdown a {
        padding: 8px 16px;
        text-align: center;
    }
}