/* ============================================
   GA4 BigQuery Course Styles
   ============================================ */

/* Course Sales Page (Logged Out) */
.course-sales {
    padding-top: 5rem;
}

.course-sales-header {
    text-align: center;
    padding: 6rem 0 4rem;
    background: linear-gradient(180deg, hsl(var(--card)) 0%, hsl(var(--background)) 100%);
}

.course-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: hsl(var(--primary) / 0.15);
    color: hsl(var(--primary));
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.course-sales-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: 1rem;
    background: linear-gradient(135deg, hsl(var(--foreground)) 0%, hsl(var(--primary)) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.course-sales-subtitle {
    font-size: 1.25rem;
    color: hsl(var(--muted-foreground));
    max-width: 600px;
    margin: 0 auto 2rem;
}

.course-sales-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.course-sales-content {
    padding: 4rem 0;
}

.course-sales-content .container-narrow {
    max-width: 800px;
}

/* Curriculum Preview */
.course-curriculum-preview {
    padding: 6rem 0;
    background: hsl(var(--card) / 0.5);
}

.curriculum-modules {
    display: grid;
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.module-preview {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.module-preview:hover {
    border-color: hsl(var(--primary) / 0.5);
    transform: translateX(4px);
}

.module-preview-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.module-preview-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: hsl(var(--primary) / 0.1);
    color: hsl(var(--primary));
    border-radius: 0.5rem;
    font-weight: 700;
    font-size: 0.875rem;
}

.module-preview-title {
    font-weight: 500;
    color: hsl(var(--foreground) / 0.9);
}

.module-preview-lock {
    color: hsl(var(--muted-foreground));
}

.curriculum-cta {
    text-align: center;
    margin-top: 3rem;
}

/* Course Dashboard (Logged In) */
.course-dashboard {
    padding-top: 5rem;
}

.course-dashboard-header {
    padding: 4rem 0 3rem;
    background: hsl(var(--card) / 0.5);
    border-bottom: 1px solid hsl(var(--border));
}

.course-dashboard-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 0.5rem;
}

.course-dashboard-subtitle {
    color: hsl(var(--muted-foreground));
    font-size: 1.125rem;
}

.course-content-area {
    padding: 3rem 0;
}

.course-layout {
    max-width: 900px;
    margin: 0 auto;
}

/* Course Accordion */
.course-accordion {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.module-item {
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    overflow: hidden;
}

.module-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    color: hsl(var(--foreground));
    transition: all 0.2s ease;
}

.module-header:hover {
    background: hsl(var(--secondary) / 0.5);
}

.module-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.module-number {
    font-size: 0.75rem;
    color: hsl(var(--primary));
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.module-title {
    font-size: 1rem;
    font-weight: 600;
    color: hsl(var(--foreground) / 0.95);
}

.module-chevron {
    color: hsl(var(--muted-foreground));
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.module-header[aria-expanded="true"] .module-chevron {
    transform: rotate(180deg);
}

.module-topics {
    display: none;
    padding: 0 1.5rem 1.25rem;
}

.module-item.open .module-topics {
    display: block;
}

.topic-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: hsl(var(--muted-foreground));
    border-radius: 0.5rem;
    transition: all 0.2s ease;
    text-decoration: none;
}

.topic-link:hover {
    background: hsl(var(--secondary));
    color: hsl(var(--foreground));
}

.topic-icon {
    flex-shrink: 0;
    color: hsl(var(--muted-foreground));
}

.topic-title {
    font-size: 0.9375rem;
}

/* Course Topic Page */
.course-topic {
    padding-top: 4rem;
    min-height: 100vh;
}

.course-topic-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    min-height: calc(100vh - 4rem);
}

/* Course Sidebar */
.course-sidebar {
    position: sticky;
    top: 4rem;
    height: calc(100vh - 4rem);
    background: hsl(var(--card));
    border-right: 1px solid hsl(var(--border));
    overflow-y: auto;
    z-index: 40;
}

.course-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid hsl(var(--border));
    position: sticky;
    top: 0;
    background: hsl(var(--card));
}

.course-sidebar-back {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: hsl(var(--muted-foreground));
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.course-sidebar-back:hover {
    color: hsl(var(--primary));
}

.course-sidebar-toggle {
    display: none;
    padding: 0.5rem;
    background: transparent;
    border: none;
    color: hsl(var(--muted-foreground));
    cursor: pointer;
    border-radius: 0.375rem;
}

.course-sidebar-toggle:hover {
    background: hsl(var(--secondary));
    color: hsl(var(--foreground));
}

.course-sidebar-nav {
    padding: 1rem;
}

.sidebar-module {
    margin-bottom: 1.5rem;
}

.sidebar-module-title {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: hsl(var(--primary));
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0 0.75rem;
    margin-bottom: 0.5rem;
}

.sidebar-topics {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.sidebar-topic-link {
    display: block;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: hsl(var(--muted-foreground));
    border-radius: 0.375rem;
    transition: all 0.2s ease;
    text-decoration: none;
}

.sidebar-topic-link:hover {
    background: hsl(var(--secondary));
    color: hsl(var(--foreground));
}

.sidebar-topic-link.active {
    background: hsl(var(--primary) / 0.15);
    color: hsl(var(--primary));
    font-weight: 500;
}

/* Course Topic Main */
.course-topic-main {
    padding: 2rem 3rem 4rem;
    max-width: 900px;
    color: hsl(var(--foreground));
    background: hsl(var(--background));
}

.course-topic-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid hsl(var(--border));
}

.course-topic-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: hsl(var(--foreground));
}

.course-topic-content {
    margin-bottom: 3rem;
}

.course-topic-body {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: hsl(var(--foreground));
}

.course-topic-body h2 {
    font-size: 1.5rem;
    margin: 2.5rem 0 1rem;
    color: hsl(var(--foreground));
}

.course-topic-body h3 {
    font-size: 1.25rem;
    margin: 2rem 0 0.75rem;
    color: hsl(var(--foreground));
}

.course-topic-body p {
    margin-bottom: 1.25rem;
    color: hsl(var(--foreground));
}

.course-topic-body blockquote {
    border-left: 4px solid hsl(var(--primary));
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: hsl(var(--card));
    border-radius: 0 0.5rem 0.5rem 0;
    color: hsl(var(--foreground));
}

.course-topic-body ol,
.course-topic-body ul {
    margin: 1rem 0 1.5rem 1.5rem;
    color: hsl(var(--foreground));
}

.course-topic-body li {
    margin-bottom: 0.5rem;
    color: hsl(var(--foreground));
}

.course-topic-body a {
    color: hsl(var(--primary));
    text-decoration: underline;
}

.course-topic-body a:hover {
    opacity: 0.8;
}

.course-topic-body img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
}

.course-topic-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

.course-topic-body th,
.course-topic-body td {
    padding: 0.75rem 1rem;
    border: 1px solid hsl(var(--border));
    text-align: left;
}

.course-topic-body th {
    background: hsl(var(--secondary));
    font-weight: 600;
}

/* Code Blocks with Copy Button and Line Numbers */
.course-topic-body pre {
    position: relative;
    background: hsl(222 47% 6%);
    border: 1px solid hsl(var(--border));
    border-radius: 0.5rem;
    margin: 1.5rem 0;
    overflow: hidden;
}

.course-topic-body pre code {
    display: block;
    padding: 1rem 1.25rem;
    padding-left: 3.5rem;
    overflow-x: auto;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    counter-reset: line;
}

/* Line Numbers */
.course-topic-body pre code .line {
    display: block;
    position: relative;
}

.course-topic-body pre code .line::before {
    counter-increment: line;
    content: counter(line);
    position: absolute;
    left: -2.75rem;
    width: 2rem;
    text-align: right;
    color: hsl(var(--muted-foreground) / 0.4);
    font-size: 0.75rem;
}

/* Copy Button */
.code-copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: hsl(var(--secondary));
    border: 1px solid hsl(var(--border));
    border-radius: 0.375rem;
    color: hsl(var(--muted-foreground));
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

.code-copy-btn:hover {
    background: hsl(var(--primary) / 0.2);
    color: hsl(var(--primary));
    border-color: hsl(var(--primary) / 0.5);
}

.code-copy-btn.copied {
    background: hsl(142 76% 36% / 0.2);
    color: hsl(142 76% 50%);
    border-color: hsl(142 76% 50% / 0.5);
}

.code-language-label {
    position: absolute;
    top: 0.5rem;
    left: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: hsl(var(--primary) / 0.15);
    color: hsl(var(--primary));
    border-radius: 0.25rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Topic Navigation */
.course-topic-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding-top: 2rem;
    border-top: 1px solid hsl(var(--border));
}

.topic-nav-link {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1.25rem;
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    text-decoration: none;
    transition: all 0.2s ease;
}

.topic-nav-link:hover {
    border-color: hsl(var(--primary) / 0.5);
    transform: translateY(-2px);
}

.topic-nav-prev {
    grid-column: 1;
}

.topic-nav-next {
    grid-column: 2;
    text-align: right;
}

.topic-nav-label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: hsl(var(--muted-foreground));
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.topic-nav-next .topic-nav-label {
    justify-content: flex-end;
}

.topic-nav-title {
    font-weight: 600;
    color: hsl(var(--foreground) / 0.9);
    font-size: 0.9375rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .course-topic-layout {
        grid-template-columns: 1fr;
    }

    .course-sidebar {
        position: fixed;
        top: 0;
        left: -320px;
        width: 320px;
        height: 100vh;
        transition: left 0.3s ease;
        z-index: 100;
    }

    .course-sidebar.open {
        left: 0;
    }

    .course-sidebar-toggle {
        display: flex;
    }

    .course-sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
    }

    .course-sidebar.open + .course-sidebar-overlay {
        display: block;
    }

    .course-topic-main {
        padding: 1.5rem;
    }

    .mobile-sidebar-toggle {
        position: fixed;
        bottom: 1.5rem;
        right: 1.5rem;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 56px;
        height: 56px;
        background: hsl(var(--primary));
        color: hsl(var(--primary-foreground));
        border: none;
        border-radius: 50%;
        box-shadow: 0 4px 12px hsl(var(--primary) / 0.3);
        cursor: pointer;
        z-index: 98;
    }
}

@media (max-width: 640px) {
    .course-sales-cta {
        flex-direction: column;
        align-items: center;
    }

    .course-topic-nav {
        grid-template-columns: 1fr;
    }

    .topic-nav-prev,
    .topic-nav-next {
        grid-column: 1;
    }

    .topic-nav-next {
        text-align: left;
    }

    .topic-nav-next .topic-nav-label {
        justify-content: flex-start;
    }
}

/* Prism.js SQL Syntax Highlighting */
.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
    color: hsl(var(--muted-foreground) / 0.6);
}

.token.punctuation {
    color: hsl(var(--foreground) / 0.7);
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
    color: hsl(340 82% 65%);
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
    color: hsl(142 70% 55%);
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
    color: hsl(45 100% 65%);
}

.token.atrule,
.token.attr-value,
.token.keyword {
    color: hsl(199 89% 65%);
}

.token.function,
.token.class-name {
    color: hsl(280 80% 70%);
}

.token.regex,
.token.important,
.token.variable {
    color: hsl(28 100% 65%);
}

/* Style .post-body inside course topic layout (same as .course-topic-body) */
.course-topic-main .post-body {
    color: hsl(var(--foreground));
    font-size: 1.0625rem;
    line-height: 1.8;
}

.course-topic-main .post-body h2 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.course-topic-main .post-body h3 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.course-topic-main .post-body p {
    margin-bottom: 1.25rem;
}

.course-topic-main .post-body blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    border-left: 4px solid hsl(var(--primary));
    background: hsl(var(--muted));
    border-radius: 0 0.5rem 0.5rem 0;
    font-style: italic;
}

.course-topic-main .post-body ol,
.course-topic-main .post-body ul {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.course-topic-main .post-body li {
    margin-bottom: 0.5rem;
}

.course-topic-main .post-body a {
    color: hsl(var(--primary));
    text-decoration: underline;
}

.course-topic-main .post-body a:hover {
    opacity: 0.8;
}

.course-topic-main .post-body img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: 1.5rem 0;
}

.course-topic-main .post-body table {
    width: 100%;
    margin: 1.5rem 0;
    border-collapse: collapse;
}

.course-topic-main .post-body th,
.course-topic-main .post-body td {
    padding: 0.75rem;
    border: 1px solid hsl(var(--border));
    text-align: left;
}

.course-topic-main .post-body th {
    background: hsl(var(--muted));
    font-weight: 600;
}

.course-topic-main .post-body pre {
    margin: 1.5rem 0;
    padding: 1.25rem;
    background: hsl(222 47% 11%);
    border-radius: 0.5rem;
    overflow-x: auto;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.course-topic-main .post-body pre code {
    background: none;
    padding: 0;
    color: hsl(210 40% 96%);
    font-family: inherit;
}

.course-topic-main .post-content {
    padding: 0;
}

.course-topic-main .post-header {
    padding: 0;
    margin-bottom: 2rem;
}

.course-topic-main .post-header .post-title {
    font-size: 2rem;
    margin: 0;
}

/* ===== Floating Sidebar for Course Topics ===== */
.course-sidebar-float {
    position: fixed;
    top: 0;
    left: 0;
    width: 320px;
    height: 100vh;
    background: hsl(var(--card));
    border-right: 1px solid hsl(var(--border));
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
}

.course-sidebar-float.open {
    transform: translateX(0);
}

.course-sidebar-float .course-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid hsl(var(--border));
    position: sticky;
    top: 0;
    background: hsl(var(--card));
}

.course-sidebar-float .course-sidebar-back {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: hsl(var(--muted-foreground));
    text-decoration: none;
    font-size: 0.875rem;
}

.course-sidebar-float .course-sidebar-back:hover {
    color: hsl(var(--primary));
}

.course-sidebar-float .course-sidebar-close {
    background: none;
    border: none;
    color: hsl(var(--muted-foreground));
    cursor: pointer;
    padding: 0.5rem;
}

.course-sidebar-float .course-sidebar-close:hover {
    color: hsl(var(--foreground));
}

.course-sidebar-float .course-sidebar-nav {
    padding: 1rem;
}

.course-sidebar-float .sidebar-module {
    margin-bottom: 1rem;
}

.course-sidebar-float .sidebar-module-title {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: hsl(var(--foreground));
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid hsl(var(--border));
}

.course-sidebar-float .sidebar-topics {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.course-sidebar-float .sidebar-topic-link {
    display: block;
    padding: 0.5rem 0.75rem;
    color: hsl(var(--muted-foreground));
    text-decoration: none;
    font-size: 0.8125rem;
    border-radius: 0.375rem;
    transition: all 0.2s;
}

.course-sidebar-float .sidebar-topic-link:hover {
    background: hsl(var(--muted));
    color: hsl(var(--foreground));
}

.course-sidebar-float .sidebar-topic-link.active {
    background: hsl(var(--primary) / 0.1);
    color: hsl(var(--primary));
    font-weight: 500;
}

.course-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.course-sidebar-overlay.open {
    opacity: 1;
    visibility: visible;
}

.course-sidebar-toggle-btn {
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
    border: none;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 4px 12px hsl(var(--primary) / 0.3);
    z-index: 100;
    transition: all 0.2s;
}

.course-sidebar-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px hsl(var(--primary) / 0.4);
}

/* Course topic nav in floating sidebar layout */
.has-course-sidebar .course-topic-nav {
    margin-top: 3rem;
    padding: 2rem 0;
    border-top: 1px solid hsl(var(--border));
}

.has-course-sidebar .topic-nav-links {
    display: flex;
    gap: 1rem;
}

.has-course-sidebar .topic-nav-link {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem 1.5rem;
    background: hsl(var(--muted));
    border-radius: 0.5rem;
    text-decoration: none;
    transition: all 0.2s;
    flex: 1;
}

.has-course-sidebar .topic-nav-link:hover {
    background: hsl(var(--muted) / 0.8);
}

.has-course-sidebar .topic-nav-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: hsl(var(--muted-foreground));
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.has-course-sidebar .topic-nav-next .topic-nav-label {
    justify-content: flex-end;
}

.has-course-sidebar .topic-nav-title {
    font-weight: 500;
    color: hsl(var(--foreground));
    font-size: 0.9375rem;
}

.has-course-sidebar .topic-nav-next {
    text-align: right;
}

@media (max-width: 640px) {
    .has-course-sidebar .topic-nav-links {
        flex-direction: column;
    }
    
    .has-course-sidebar .topic-nav-link {
        max-width: 100%;
    }
    
    .has-course-sidebar .topic-nav-next {
        text-align: left;
    }
    
    .has-course-sidebar .topic-nav-next .topic-nav-label {
        justify-content: flex-start;
    }
    
    .course-sidebar-toggle-btn {
        bottom: 1rem;
        left: 1rem;
        padding: 0.625rem 1rem;
        font-size: 0.8125rem;
    }
}

@media (max-width: 380px) {
    .course-sidebar-float {
        width: 100%;
    }
}