/* =============================================================================
   ABSETH DESIGN SYSTEM — Article / Case-Study Layout
   The shared long-form scaffolding for every my-works case study: base type,
   article layout, figures, code, TOC + reading progress, tables, timeline,
   next-steps, theme toggle, toast, responsive. Lifted verbatim from the
   improving-adoption case study, which is the canonical reference.
   Load AFTER colors_and_type.css + components.css + motion.css; project CSS
   loads after this for genuine project-specific overrides only.
   ============================================================================= */


/* ========== BASE STYLES ========== */

/* HTML and body base styling */
html {
    background-color: var(--background);
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", serif;
    font-size: 16px;
    color: var(--text-primary);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}


/* ========== TYPOGRAPHY ========== */

/* Heading styles */
h1 {
    font-family: "Big Shoulders Display", serif;
    font-size: var(--font-size-3xl);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    letter-spacing: -0.3px;
    color: var(--text-bold);
}

h2, h3, h4, h5, h6, p {
    font-family: 'Inter', sans-serif;
}

h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-md);
    letter-spacing: -0.3px;
    color: var(--text-bold);
}

h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: 1.8rem 0 0.8rem;
    line-height: 1.6rem;
    color: var(--text-bold);
}

/* Bold text emphasis */
b {
    font-weight: 600;
    color: var(--text-bold);
}

/* Paragraph styles */
p {
    line-height: 1.5;
    margin: var(--space-md) 0;
    color: var(--text-primary);
}

/* List styles */
li {
    line-height: 1.5;
    margin-top: 0.35rem;
}

ol {
    padding-left: 1.4rem;
    margin: 0 0 1.2rem 0;
}

ol li {
    line-height: 1.5;
    margin-bottom: 0.35rem;
}

ul {
    padding-left: 1.4rem;
    margin: 0 0 1.2rem 0;
}

ul li {
    line-height: 1.5;
    margin-bottom: 0.35rem;
}

/* Link styles */
a:link {
    text-decoration: none;
    color: var(--primary);
}

a:visited {
    text-decoration: none;
    color: var(--primary);
}

p a:hover {
    text-decoration: underline;
}


/* ========== ARTICLE LAYOUT ========== */

/* Main article container */
.article-container {
    margin: auto;
    display: flex;
    justify-content: center;
    padding: 40px 20px 100px 20px;
    width: 100%;
    box-sizing: border-box;
}

.article-body {
    max-width: 700px;
    width: 100%;
    padding: 0 var(--space-md);
    box-sizing: border-box;
}

.article-body > section + section {
    margin-top: var(--space-2xl);
}

/* Article-specific heading adjustments */
.article-h1 {
    font-size: var(--font-size-2xl);
    letter-spacing: -0.05rem;
    margin-bottom: var(--space-xl);
    margin-top: var(--space-xl);
    line-height: 1.25;
}

.article-h2 {
    margin-top: 3.5rem;
    margin-bottom: 1.25rem;
}

/* Anchor offset for in-page navigation */
.article-body h1[id],
.article-body h2[id],
.article-body h3[id],
.article-body h4[id],
.article-body h5[id],
.article-body h6[id] {
    scroll-margin-top: 110px;
}


/* ========== ARTICLE FIGURES & IMAGES ========== */

/* Figure container with breakout layout */
.article-figure {
    margin: var(--space-xl) auto;
    max-width: 800px;
    width: calc(100% + 100px);
    margin-left: -40px;
    margin-right: -50px;
}

.article-figure img,
.article-figure video,
.article-video video {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    display: block;
    /* Force clipping for video content */
    clip-path: inset(0px round 8px);
}

.article-figure figcaption, .article-video figcaption  {
    margin-top: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Grey background container for images/diagrams */
.grey-background-article {
    background-color: var(--background-grey);
    border-radius: var(--radius-xl);
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 800px;
    width: calc(100% + 100px);
    margin-left: -50px;
    margin-right: -50px;
    min-width: 180px;
    height: 310px;
    position: relative;
    overflow: hidden;
}

/* Video styling */
.article-video {
    border-radius: var(--radius-md);
    margin: var(--space-md) 0;
    margin: var(--space-xl) auto;
    max-width: 800px;
    width: calc(100% + 100px);
    margin-left: -50px;
    margin-right: -50px;
    
                /* Hide content while loading */
            .media-loading-content {
                opacity: 0;
                transition: opacity 0.4s ease-in;
            }
            
            .media-loaded-content {
                opacity: 1;
            }

            /* Hide mute button from video controls, keep only fullscreen */
            video::-webkit-media-controls-mute-button {
                display: none !important;
            }
            video::-moz-media-controls-mute-button {
                display: none !important;
            }
            video::-ms-media-controls-mute-button {
                display: none !important;
            }
}


/* ========== CODE ========== */

/* Inline code — violet, small padding, stays in the text flow */
code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--code-text);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
}

/* Code block container */
pre {
    margin: var(--space-lg) 0;
    padding: 0;
    background-color: #1E1E1E;
    border-radius: var(--radius-md);
    width: 100%;
}

/* Code block — override inline styles; dark bg, gray text */
pre > code {
    display: block;
    margin: 0;
    padding: var(--space-lg);
    font-size: var(--font-size-xs);
    line-height: 1.6rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: visible;
    color: #D4D4D4;
    border-radius: var(--radius-md);
    background: none;
}

/* Code blocks in list items */
li pre {
    margin-left: -1.5rem;
    margin-right: 0;
    width: calc(100% + 1.5rem);
}


/* ========== DIVIDERS & SEPARATORS ========== */

/* Introduction section divider */
.intro-hr {
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-xl);
    border: 0;
    border-top: 2px solid var(--border);
}

@media (prefers-color-scheme: dark) {
    .intro-hr {
        border-top: 2px solid #2B2C2E;
    }
}

/* Forced theme overrides for divider */
html.force-light .intro-hr {
    border-top: 2px solid var(--border);
}

html.force-dark .intro-hr {
    border-top: 2px solid #2B2C2E;
}


/* ========== NAVIGATION ELEMENTS ========== */

/* Back button (fixed top-left) */
.back-button {
    position: fixed;
    top: var(--space-xl);
    left: var(--space-xl);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-primary) !important;
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    z-index: 100;
    white-space: nowrap;
}

.back-button:hover {
    color: var(--primary) !important;
}

/* Jump button (CTA style) */
.jump-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin: var(--space-xl) 0 0 0;
    padding: 10px 20px;
    background: transparent;
    color: var(--primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: all 0.2s ease;
    border: 1px solid var(--primary);
}

.jump-btn:hover {
    color: var(--red);
    border-color: var(--red);
    background-color: var(--background-grey);
}


/* ========== TABLE OF CONTENTS ========== */

/* Sticky TOC positioning */
.toc-sticky {
    position: fixed;
    top: var(--space-xl);
    right: var(--space-lg);
    width: 220px;
    z-index: 110;
}

/* TOC wrapper container */
.toc-wrapper {
    position: relative;
    padding-left: 22px;
    background: var(--background);
    border: none;
    border-radius: var(--radius-lg);
    padding: 14px var(--space-md);
    box-shadow: none;
    transition: transform 0.2s ease;
}


/* TOC title styling */
.toc-title {
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin: 0 0 var(--space-sm) 0;
    color: var(--text-secondary);
}

/* TOC list and links */
.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-list li {
    margin: 6px 0;
}

.toc-list a {
    display: block;
    padding: var(--space-xs) 0 var(--space-xs) var(--space-sm);
    border-left: 2px solid transparent;
    color: rgba(128, 128, 128, 0.6);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all 0.2s ease;
}

.toc-list a:hover {
    color: var(--primary);
    border-left: 2px solid transparent;
}

.toc-list a.active {
    color: var(--text-primary);
    border-left: 2px solid transparent;
}

/* TOC "back to top" link */
.toc-top {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--primary);
}

/* Reading progress bar (vertical in TOC) */
.reading-progress {
    position: absolute;
    left: 0;
    width: 2px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 999px;
    overflow: hidden;
    pointer-events: none;
}

.reading-progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: var(--text-secondary);
    border-radius: inherit;
    transition: height 0.1s linear;
}


/* ========== DATA TABLES ========== */

/* Base table styling */
table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-lg) 0;
    border: 1px solid var(--background-grey);
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* Table header styling */
table th {
    text-align: left;
    font-weight: 600;
    font-size: var(--font-size-base);
}

/* Table data cell styling */
table td {
    font-size: var(--font-size-base);
    line-height: 1.5;
}

/* Cell padding and borders */
table th, table td {
    padding: 0.75rem var(--space-md);
    vertical-align: top;
    border-bottom: 1px solid var(--background-grey);
}

table tr:last-child td {
    border-bottom: none;
}



/* ========== TIMELINE COMPONENT ========== */

/* Timeline container */
.timeline-container {
    margin: 2.5rem 0;
    position: relative;
    overflow-x: auto;
}

/* Horizontal timeline line */
.timeline-line {
    position: absolute;
    top: 6px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--text-secondary);
    opacity: 0.25;
    z-index: 0;
}

/* Timeline items wrapper */
.timeline-items {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 1;
    min-width: fit-content;
}

/* Individual timeline item */
.timeline-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    flex: 1;
    min-width: 100px;
}

/* Timeline dot marker */
.timeline-dot {
    width: 12px;
    height: 12px;
    background: var(--text-primary);
    border-radius: 50%;
    margin-bottom: var(--space-lg);
}

/* Timeline date label */
.timeline-date {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
    font-family: monospace;
    min-width: 80px;
}

/* Timeline description text */
.timeline-label {
    font-size: 0.85rem;
    color: var(--text-primary);
    line-height: 1.35;
    font-weight: 400;
    padding-right: var(--space-md);
    max-width: none;
}


/* ========== NEXT STEPS CTA ========== */

/* Next steps section */
.next-steps {
    margin: var(--space-2xl) 0 var(--space-xl);
}

.next-steps-title {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1.25rem;
}

/* Grid layout for next step cards */
.next-steps-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

/* Individual next step card */
.next-step-card {
    display: flex;
    flex-direction: column;
    padding: 1.25rem var(--space-lg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.next-step-card:hover {
    border-color: var(--text-secondary);
    background-color: var(--background-grey);
}

.next-step-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.02em;
}

.next-step-name {
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--text-primary);
}

/* Next steps footer links */
.next-steps-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--font-size-sm);
}

.next-steps-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.next-steps-links .divider {
    color: var(--text-secondary);
    opacity: 0.5;
}


/* ========== UTILITY CLASSES ========== */

/* Intro tags styling */
#intro-tags1 {
    margin-top: var(--space-2xl);
    color: var(--text-secondary) !important;
}

/* Hyperlink primary color override */
.hyp-p {
    color: var(--primary) !important;
}

.hyp-p:hover {
    color: var(--red) !important;
}

/* Footer container */
.footer-container {
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
}


/* ========== THEME TOGGLE ========== */

/* Theme toggle button (fixed bottom-right) */
.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: var(--space-sm) 12px;
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.12);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.86rem;
    border: 1px solid rgba(0, 0, 0, 0.08);
    cursor: pointer;
    box-shadow: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    z-index: 195;
    transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}

.theme-toggle:hover {
    background: rgba(0, 0, 0, 0.16);
    border-color: rgba(0, 0, 0, 0.12);
}


/* ========== TOAST NOTIFICATIONS ========== */

/* Toast container (fixed bottom-right) */
.toast {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: min(400px, calc(100vw - var(--space-lg) * 2));
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
    display: none;
    z-index: 200;
}

.toast.show {
    display: grid;
    grid-template-columns: 1fr;
    row-gap: var(--space-sm);
}

/* Toast title */
.toast-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--text-primary);
}

/* Toast message text */
.toast-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Toast action buttons container */
.toast-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-top: var(--space-xs);
}

/* Toast buttons — DS button language (hover shifts to red) */
.toast button {
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    transition: all var(--dur-fast) var(--ease-standard);
}

.toast .btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--background);
}
.toast .btn-primary:hover {
    background: var(--red);
    border-color: var(--red);
}

.toast .btn-ghost {
    background: transparent;
    border-color: var(--border-strong);
    color: var(--text-secondary);
}
.toast .btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}



/* ========== RESPONSIVE DESIGN ========== */

/* Tablet and below - hide TOC */
@media (max-width: 1100px) {
    .toc-sticky {
        display: none;
    }
}

/* Large tablet breakpoint */
@media only screen and (max-width: 900px) {
    .article-figure,
    .grey-background-article {
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
    }
}

/* Tablet breakpoint */
@media only screen and (max-width: 768px) {
    .article-container {
        padding: 50px 10px;
    }
    
    .article-body {
        padding: 0;
    }

    /* Back button becomes relative on mobile */
    .back-button {
        position: relative;
        display: inline-flex;
        top: var(--space-md);
        left: var(--space-md);
    }

    /* Table adjustments */
    table {
        font-size: 0.85rem;
    }
    
    table th,
    table td {
        padding: 0.75rem var(--space-xs);
    }

    /* Timeline becomes vertical on mobile */
    .timeline-container {
        margin: var(--space-xl) 0;
    }

    .timeline-items {
        flex-direction: column;
        gap: 1.25rem;
        padding-left: var(--space-lg);
    }

    .timeline-line {
        left: 5px;
        right: auto;
        width: 1px;
        height: 100%;
        top: 0;
    }

    .timeline-item {
        flex-direction: row;
        align-items: flex-start;
        gap: var(--space-md);
        min-width: auto;
    }

    .timeline-dot {
        flex-shrink: 0;
        margin-bottom: 0;
        margin-top: var(--space-xs);
        width: 10px;
        height: 10px;
    }

    .timeline-content {
        display: flex;
        flex-direction: column;
    }

    .timeline-label {
        max-width: none;
    }

    /* Code blocks in lists */
    li pre {
        margin-left: -1.5rem;
        width: calc(100% + 1.5rem);
    }
}

/* Mobile breakpoint */
@media only screen and (max-width: 600px) {
    /* Next steps grid becomes single column */
    .next-steps-grid {
        grid-template-columns: 1fr;
    }

    .next-steps-links {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .next-steps-links .divider {
        display: none;
    }
}

/* Small mobile breakpoint */
@media only screen and (max-width: 480px) {
    .grey-background-article {
        height: 200px;
    }
}

::view-transition-new(root) {
    animation: none;
    mix-blend-mode: normal;
}