/* Global Layout */
body {
    background-color: #f8fafc;
    margin: 0;
    font-family: 'Inter', sans-serif;
    color: #1e293b;
}

* {
    box-sizing: border-box;
}

/* Sidebar - Python Scholar Style */
.tutorial-sidebar {
    width: 280px;
    background: #ffffff;
    border-right: 1px solid #e2e8f0;
    position: fixed;
    top: 80px;
    left: 0;
    bottom: 0;
    padding: 0;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.sidebar-menu {
    flex: 1;
    overflow-y: auto;
    padding: 20px 16px;
    list-style: none;
    margin: 0;
    position: relative;
}

/* Vertical Progress Line */
.sidebar-menu::before {
    content: '';
    position: absolute;
    left: 34px;
    top: 40px;
    bottom: 40px;
    width: 2px;
    background: #f1f5f9;
    z-index: 0;
}

.sidebar-menu::-webkit-scrollbar {
    width: 5px;
}

.sidebar-menu::-webkit-scrollbar-thumb {
    background: #e2e8f0;
    border-radius: 10px;
}

/* Topic Items */

.topic {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    margin: 4px 8px;
    border-radius: 8px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    z-index: 1;
    background: transparent;
    color: #64748b;
    font-weight: 500;
    gap: 12px;
}

.topic:hover:not(.active) {
    background: #f8fafc;
    color: #4f46e5;
}

.topic.active {
    background: #6366f1;
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.topic i {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.topic.completed i {
    color: #10b981;
}

.topic.active i {
    color: #ffffff;
}

.topic.locked {
    opacity: 0.6;
    cursor: not-allowed;
}

.topic-title {
    font-size: 15px;
    flex: 1;
}

.topic.active .topic-title {
    font-weight: 600;
}

.sidebar-footer-nav {
    margin-top: auto;
    border-top: 1px solid #f1f5f9;
    padding-top: 20px;
}

.sidebar-pro-badge {
    background: #eef2ff;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

/* Main Header (Top Bar) */
.header.main-tutorial-header {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    height: 80px;
    border-bottom: 1px solid #f1f5f9;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1200;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 48px;
}

.header-right {
    display: flex;
    align-items: center;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-nav-control {
    background: transparent;
    color: #64748b;
    border: none;
    font-size: 14px;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.2s;
}

.btn-nav-control:hover { background: #f1f5f9; }

.btn-nav-control.primary {
    background: #6366f1;
    color: white;
}

.user-profile-avatar {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    border: 2px solid #fff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
    overflow: hidden;
    transition: all 0.3s ease;
}

.user-profile-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3);
}

.user-profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-nav-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-nav-info {
    text-align: right;
}

.user-nav-info .user-name {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: #1e293b;
}

.user-nav-info .user-role {
    display: block;
    font-size: 11px;
    color: #64748b;
    text-transform: uppercase;
    font-weight: 600;
}

@media (max-width: 768px) {
    .user-nav-info {
        display: none;
    }
}
.btn-next { background: #6366f1; color: #ffffff; }

/* Content Wrapper */
.tutorial-content {
    margin-left: 280px;
    margin-top: 80px;
    padding: 60px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #f9fafb;
}

.content-wrapper {
    width: 100%;
    max-width: 1100px;
}

.main-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

#topicContent {
    font-size: 17px;
    color: #334155;
    line-height: 1.7;
}

#topicContent h1, #topicContent h2, #topicContent h3 {
    color: #0f172a;
    margin-top: 2em;
    margin-bottom: 0.8em;
    line-height: 1.2;
    font-weight: 700;
}

#topicContent p {
    margin-bottom: 1.5em;
}

#topicContent ul, #topicContent ol {
    margin-bottom: 1.25em;
    padding-left: 2em; /* More space for bullets */
}

#topicContent li {
    margin-bottom: 0.5em;
    line-height: 1.6;
}

/* Fix for editors that wrap li content in <p> */
#topicContent li p {
    margin: 0;
    display: inline;
}

#topicContent blockquote {
    border-left: 4px solid #6366f1;
    padding: 10px 20px;
    margin: 20px 0;
    background: rgba(99, 102, 241, 0.05);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: #475569;
}

#topicContent code {
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
    color: #6366f1;
}

/* Callout Boxes (Telugu Content) */
.intro, .callout {
    background: #f5f3ff; /* Very light purple */
    border-radius: 8px;
    padding: 24px 32px;
    margin: 32px 0;
    border-left: 4px solid #6366f1; /* Thick purple bar */
    position: relative;
}

.intro::before, .callout::before {
    content: '\f1ab'; /* FontAwesome Translate Icon */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: -40px;
    top: 24px;
    color: #6366f1;
    font-size: 20px;
    display: none; /* Keep it clean for now, or use header */
}

.intro-header, .callout-header {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #4f46e5;
    font-weight: 800;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.intro h2, .callout h2 {
    font-size: 18px;
    color: #4338ca;
    margin: 0 !important;
    font-weight: 800;
}

.intro p, .callout p {
    color: #1e1b4b !important;
    font-size: 16px !important;
    margin-bottom: 0 !important;
    font-style: italic;
    font-family: 'Inter', 'Noto Sans Telugu', sans-serif;
    line-height: 1.8 !important;
}

/* Lesson Meta Header */
.lesson-label {
    font-size: 11px;
    font-weight: 800;
    color: #6366f1;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 8px;
}

.lesson-title {
    font-size: 42px;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.social-proof {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}

.avatar-stack {
    display: flex;
    align-items: center;
}

.avatar-stack img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid #ffffff;
    margin-right: -8px;
    background: #e2e8f0;
}

.student-count {
    font-size: 13px;
    color: #64748b;
    font-weight: 500;
}

.started-count-row {
    display: inline-flex;
    align-items: center;
    margin-top: 14px;
    margin-bottom: 40px;
    margin-left: 4px;
    padding: 6px 16px 6px 12px;
    background: #eff6ff;
    border-radius: 50px;
    border: 1px solid #dbeafe;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.05);
}

.social-proof-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 10px;
}

.started-count-text {
    font-size: 12px;
    font-weight: 600;
    color: #4f46e5;
}

/* Code Snippets - Premium Developer Look */
.code-block-container {
    background: #0f172a;
    border-radius: 12px;
    overflow: hidden;
    margin: 32px 0;
    box-shadow: 0 20px 40px rgba(0,0,0,0.25);
    border: 1px solid rgba(255,255,255,0.05);
}

.code-header {
    background: rgba(255, 255, 255, 0.03);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.code-dots {
    display: flex;
    gap: 6px;
}

.code-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.code-dots .red { background: #ff5f56; }
.code-dots .yellow { background: #ffbd2e; }
.code-dots .green { background: #27c93f; }

.lang-badge {
    font-size: 11px;
    color: #94a3b8;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: rgba(255,255,255,0.05);
    padding: 2px 8px;
    border-radius: 4px;
}

.copy-btn {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.1);
    color: #94a3b8;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.copy-btn:hover {
    background: rgba(255,255,255,0.05);
    color: #ffffff;
    border-color: rgba(255,255,255,0.2);
}

.code-block {
    display: flex;
    padding: 20px 0;
    font-family: 'Fira Code', 'JetBrains Mono', 'Menlo', monospace;
    font-size: 14px;
    line-height: 1.6;
    overflow-x: auto;
}

.line-numbers {
    padding: 0 16px 0 20px;
    color: #475569;
    text-align: right;
    user-select: none;
    border-right: 1px solid rgba(255,255,255,0.05);
    min-width: 50px;
}

.code-content {
    padding: 0 24px;
    color: #e2e8f0;
    white-space: pre;
    flex: 1;
}

/* Basic Syntax Highlighting Classes */
.code-content .keyword { color: #f472b6; }
.code-content .string { color: #34d399; }
.code-content .comment { color: #64748b; font-style: italic; }
.code-content .function { color: #60a5fa; }
.code-content .number { color: #fbbf24; }

.breadcrumb-label {
    font-size: 13px;
    font-weight: 500;
    color: #94a3b8;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.bc-item {
    color: #94a3b8;
    text-decoration: none;
    transition: all 0.2s ease;
}

.bc-item:hover {
    color: #6366f1;
}

.bc-item.active {
    color: #6366f1;
    font-weight: 700;
}

.bc-sep {
    font-size: 8px;
    color: #cbd5e1;
    display: flex;
    align-items: center;
}

.main-box h1 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.04em;
    color: #0f172a;
}

.main-box h1 span { color: #6366f1; }

.main-box p, 
.main-box {
    font-size: 18px;
    line-height: 1.8;
    color: #475569;
    margin-bottom: 40px;
    white-space: pre-wrap; /* Preserve newlines from the database */
}

.main-box b, 
.main-box strong {
    font-weight: 800;
    color: #0f172a;
}

.main-box i,
.main-box em {
    font-style: italic;
}

/* Bento Style Grid for features/info */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 60px;
}

.info-card {
    background: white;
    padding: 24px;
    border-radius: 16px;
    border: 1px solid #f1f5f9;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
}

.info-card i {
    font-size: 20px;
    color: #38bdf8;
    margin-bottom: 16px;
    display: block;
}

.info-card h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 8px;
}

.info-card p {
    font-size: 12px;
    margin: 0;
    color: #94a3b8;
}

/* Coming Up Next footer */
.next-lesson-section {
    margin-top: 60px;
    padding: 24px 32px;
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.next-lesson-section:hover {
    border-color: #4f46e5;
    background: #f8faff;
    transform: translateY(-2px);
}

.next-lesson-meta span {
    font-size: 11px;
    color: #4f46e5;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.next-lesson-meta h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 4px 0 0;
    color: #0f172a;
}

.next-lesson-btn {
    width: 44px;
    height: 44px;
    background: #4f46e5;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #ffffff;
    transition: all 0.3s ease;
}

.next-lesson-section:hover .next-lesson-btn {
    transform: translateX(4px);
}

/* Menu Toggle Button */
.menu-toggle {
    display: none;
    background: var(--primary-color);
    color: white;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    font-size: 20px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    z-index: 1200;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    transform: scale(1.05);
    background: var(--primary-hover);
}

/* Sidebar Close Button (Mobile Only) */
.sidebar-close {
    display: none;
    position: absolute;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    background: #f1f5f9;
    color: #64748b;
    border: none;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    cursor: pointer;
    z-index: 100;
    transition: all 0.2s;
}

.sidebar-close:hover {
    background: #fee2e2;
    color: #ef4444;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .sidebar-close {
        display: flex;
    }
    
    .tutorial-sidebar {
        transform: translateX(-100%);
        width: 280px;
        box-shadow: none;
        top: 60px;
    }

    .tutorial-sidebar.active {
        transform: translateX(0);
        box-shadow: 20px 0 50px rgba(0,0,0,0.1);
    }

    .main-tutorial-header {
        margin-left: 0 !important;
        padding: 0 12px !important;
        height: 60px;
        position: sticky;
        top: 0;
        z-index: 1100;
        border-bottom: 1px solid #f1f5f9;
    }

    .tutorial-content {
        margin-left: 0 !important;
        padding: 20px 12px !important;
    }

    .menu-toggle {
        display: flex;
        width: 36px;
        height: 36px;
        border-radius: 10px;
        font-size: 16px;
        margin-right: 12px;
    }

    .nav-controls {
        gap: 8px;
    }

    .btn-nav-control {
        padding: 6px 12px;
        font-size: 12px;
    }
}

@media (max-width: 768px) {
    .header-actions {
        gap: 10px;
    }

    .btn-header {
        padding: 8px 16px;
        font-size: 12px;
    }

    #userProfile {
        margin-left: 10px;
    }
}

@media (max-width: 640px) {
    .playground-tab-bar {
        flex-direction: column;
        align-items: flex-start !important;
        padding: 16px;
        gap: 16px;
    }

    .playground-controls {
        width: 100%;
        justify-content: space-between;
    }

    .tab-item {
        width: 100%;
        border-radius: 8px;
    }
}
.sidebar-header { padding: 32px 24px 20px; border-bottom: 1px solid rgba(0,0,0,0.05); display: flex; align-items: center; gap: 16px; margin-bottom: 12px; } .sidebar-header i { font-size: 38px; color: #6366f1; filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.15)); } .sidebar-header h2 { font-size: 19px; font-weight: 800; margin: 0; color: #0f172a; letter-spacing: -0.02em; } .sidebar-header p { font-size: 11px; margin: 0; color: #64748b; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; }

/* End of stylesheet */