/* Font import — DM Sans for headings, Source Sans 3 for body.
   @import must be the first rule in the file or browsers ignore it. */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700&family=Source+Sans+3:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================
   Kubeflow Spark Operator Documentation
   Aligned with Kubeflow visual language
   ============================================ */

/* ============================================
   Color Palette
   ============================================ */

body {
    --kf-blue: var(--color-brand-primary, #2b6cb0);
    --kf-blue-light: #4299e1;
    --kf-blue-dark: #2c5282;

    --kf-heading: var(--color-foreground-primary, #1a202c);
    --kf-text: var(--color-foreground-secondary, #2d3748);
    --kf-text-light: var(--color-foreground-muted, #4a5568);

    --kf-bg-subtle: var(--color-background-secondary, #f7fafc);
    --kf-border: var(--color-background-border, #e2e8f0);

    --kf-accent: #81e6d9;
}

/* ============================================
   TOP NAVIGATION BAR
   ============================================ */

.announcement {
    background: #2D3748 !important;
    border-bottom: 1px solid #3a4560 !important;
    padding: 0 !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 100 !important;
}

.top-nav-brand {
    color: #e2e8f0 !important;
}

.top-nav-brand:hover {
    color: #fff !important;
}

.top-nav-links a {
    color: #cbd5e0 !important;
}

.top-nav-links a:hover {
    color: #fff !important;
    background: rgba(255,255,255,0.1);
}

.page {
    padding-top: 52px !important;
}

.sidebar-sticky {
    top: 52px !important;
}

.toc-sticky {
    top: 52px !important;
}

.mobile-header {
    top: 52px !important;
}

.announcement-content {
    max-width: none !important;
    padding: 0 !important;
}

.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.6rem 1.5rem;
}

.top-nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none !important;
    /* The ribbon is always dark, so keep the brand bright white in both themes. */
    color: #ffffff !important;
    font-weight: 600;
    font-size: 1.1rem;
}

.top-nav-brand:hover {
    color: #ffffff !important;
}

.top-nav-brand span {
    color: #ffffff !important;
}

.top-nav-logo {
    height: 30px;
    width: auto;
    display: block;
}

.top-nav-links {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.top-nav-links a {
    /* Light text on the dark ribbon, visible in both light and dark mode. */
    color: #cbd5e0 !important;
    text-decoration: none !important;
    padding: 0.4rem 0.75rem;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: all 0.15s ease;
}

.top-nav-links a:hover {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.12);
}

/* Light/dark mode toggle button injected into the ribbon */
.top-nav-theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    margin-left: 0.25rem;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.06);
    color: #cbd5e0;
    cursor: pointer;
    transition: all 0.15s ease;
}

.top-nav-theme-toggle:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.3);
}

.top-nav-theme-toggle svg {
    width: 18px;
    height: 18px;
}

/* Show the moon in light mode, the sun in dark mode */
.top-nav-theme-toggle .icon-sun { display: none; }
.top-nav-theme-toggle .icon-moon { display: block; }
body[data-theme="dark"] .top-nav-theme-toggle .icon-sun { display: block; }
body[data-theme="dark"] .top-nav-theme-toggle .icon-moon { display: none; }

@media (max-width: 768px) {
    .top-nav-links {
        display: none;
    }
    .top-nav {
        justify-content: center;
    }
}

/* Hide logo from sidebar since it's in the navbar */
.sidebar-brand {
    display: none !important;
}

/* ============================================
   HEADINGS
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
}

h1 {
    font-size: 2rem;
    border-bottom: 2px solid var(--kf-blue-light);
    padding-bottom: 0.5rem;
}

h2 {
    font-size: 1.4rem;
    margin-top: 1rem;
    border-bottom: 1px solid var(--kf-border);
    padding-bottom: 0.3rem;
}

h3 {
    font-size: 1.15rem;
}

/* ============================================
   LINKS
   ============================================ */

a {
    color: var(--kf-blue);
}

a:visited {
    color: var(--kf-blue);
}

a:hover {
    color: var(--kf-blue-dark);
}

/* ============================================
   TEXT
   ============================================ */

p, li, dd, dt {
    line-height: 1.7;
}

li::marker {
    color: var(--kf-blue);
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar-tree a,
.sidebar-tree .reference,
.sidebar-drawer a,
.toctree-l1 > a,
.toctree-l2 > a,
.toctree-l3 > a,
.caption-text {
    color: var(--color-sidebar-link-text, var(--color-foreground-primary)) !important;
    transition: color 0.15s;
}

.sidebar-tree a:hover,
.sidebar-tree .reference:hover {
    color: var(--kf-blue) !important;
    background: rgba(66, 153, 225, 0.09);
}

.sidebar-tree .current > .reference,
.sidebar-tree .current-page > .reference {
    color: var(--kf-blue) !important;
    font-weight: 600;
    background: rgba(66, 153, 225, 0.12);
    box-shadow: inset 3px 0 0 var(--kf-blue);
}

.sidebar-tree .caption {
    color: var(--color-sidebar-caption-text, var(--color-foreground-muted)) !important;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

/* Each item: a comfortable, rounded clickable row that reads cleanly even when
   the label wraps to two or three lines. */
.sidebar-tree .reference {
    display: block;
    padding: 0.4rem 0.7rem;
    line-height: 1.4;
    border-radius: 7px;
    transition: background 0.12s ease, color 0.12s ease;
}

/* Breathing room between rows so wrapped labels don't blur together. */
.sidebar-tree li {
    margin: 0.15rem 0;
}

/* Tighten the gap directly under a top-level section that owns a sublist. */
.sidebar-tree .toctree-l1 {
    margin-top: 0.35rem;
}

/* Nested items: clear indent plus a subtle vertical guide line for hierarchy. */
.sidebar-tree ul ul {
    margin-left: 0.55rem;
    padding-left: 0.6rem;
    border-left: 1px solid var(--color-background-border, var(--kf-border));
}

/* Top-level sections: prominent. */
.sidebar-tree .toctree-l1 > a,
.sidebar-tree .toctree-l1 > .reference {
    font-weight: 600;
    font-size: 0.95rem;
}

/* Sub-items: lighter and slightly smaller, with muted text so the active and
   top-level entries stand out. */
.sidebar-tree .toctree-l2 > a,
.sidebar-tree .toctree-l2 > .reference,
.sidebar-tree .toctree-l3 > a,
.sidebar-tree .toctree-l3 > .reference {
    font-weight: 400;
    font-size: 0.875rem;
    color: var(--color-foreground-muted, var(--kf-text-light)) !important;
}

/* Sidebar: make it stick while scrolling */
@media (min-width: 67em) {
    .sidebar-drawer {
        position: sticky;
        top: 0;
        height: 100vh;
        overflow-y: auto;
    }
}

.sidebar-sticky {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 52px);
    overflow: hidden;
}

.sidebar-search-container {
    flex-shrink: 0;
}

.sidebar-scroll {
    flex: 1;
    overflow-y: auto;
}

/* ============================================
   CODE BLOCKS - Dark VS Code style
   ============================================ */

pre {
    border-radius: 8px;
    /* Subtle border so the dark code box is clearly delineated — especially in
       dark mode, where the box and the page background are both dark. */
    border: 1px solid #39414f;
    background: #1e1e1e !important;
    padding: 1rem !important;
}

pre code {
    color: #d4d4d4 !important;
    background: transparent !important;
}

.highlight {
    background: #1e1e1e !important;
    border-radius: 8px;
}

.highlight pre {
    color: #d4d4d4 !important;
}

/* Base color for every token. !important so the dark VS Code palette is used in
   BOTH light and dark mode — otherwise, in light mode, Furo's light Pygments
   theme colors un-styled tokens (e.g. YAML keys .nt) with dark colors that
   vanish against the always-dark code background. */
.highlight span {
    color: #d4d4d4 !important;
}

.highlight-bash .highlight span,
.highlight-shell .highlight span,
.highlight-console .highlight span {
    color: #d4d4d4 !important;
}

.highlight .k, .highlight .kn, .highlight .kd, .highlight .kc { color: #569cd6 !important; }
.highlight .n, .highlight .nn { color: #d4d4d4 !important; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sd,
.highlight .se, .highlight .sx, .highlight .l, .highlight .ld { color: #ce9178 !important; }
.highlight .c, .highlight .c1, .highlight .cm, .highlight .ch, .highlight .cs { color: #6a9955 !important; }
.highlight .o { color: #d4d4d4 !important; }
.highlight .p { color: #d4d4d4 !important; }
.highlight .mi, .highlight .mf, .highlight .m, .highlight .mh, .highlight .mo { color: #b5cea8 !important; }
.highlight .nb, .highlight .bp { color: #4ec9b0 !important; }
.highlight .nf, .highlight .fm { color: #dcdcaa !important; }
.highlight .nc { color: #4ec9b0 !important; }
.highlight .ow { color: #569cd6 !important; }
.highlight .gp { color: #6a9955 !important; }
.highlight .w { color: #d4d4d4 !important; }
/* YAML keys / tags / labels and variables → VS Code property light-blue */
.highlight .nt, .highlight .nl, .highlight .na { color: #9cdcfe !important; }
.highlight .nv, .highlight .vi, .highlight .vg { color: #9cdcfe !important; }

/* Inline code — distinct blue-tinted chip so terms like `SparkApplication`
   stand out clearly from body text. Scoped to inline code only (not code blocks). */
:not(pre) > code {
    color: #1c5298;
    background: #eaf2fd;
    border: 1px solid #cfe0f6;
    padding: 0.12em 0.42em;
    border-radius: 5px;
    font-size: 0.88em;
    font-weight: 500;
}

body[data-theme="dark"] :not(pre) > code {
    color: #9ecbff;
    background: rgba(99, 179, 237, 0.16);
    border-color: rgba(99, 179, 237, 0.32);
}

@media (prefers-color-scheme: dark) {
    body:not([data-theme="light"]) :not(pre) > code {
        color: #9ecbff;
        background: rgba(99, 179, 237, 0.16);
        border-color: rgba(99, 179, 237, 0.32);
    }
}

/* Keep code blocks free of the inline chip border/padding */
pre code,
.highlight pre code {
    border: none !important;
    padding: 0 !important;
}

/* Copy button */
button.copybtn {
    opacity: 0.6;
    transition: opacity 0.2s;
}

button.copybtn:hover {
    opacity: 1;
}

/* ============================================
   CARDS (homepage + sphinx-design)
   ============================================ */

.doc-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

a.doc-card,
.sd-card {
    border: 1px solid var(--kf-border) !important;
    border-radius: 8px !important;
    padding: 1.5rem;
    background-color: var(--kf-bg-subtle);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    transition: all 0.2s ease;
}

a.doc-card {
    text-decoration: none;
    display: block;
}

a.doc-card:hover,
.sd-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--kf-blue-light) !important;
    transform: translateY(-2px);
    text-decoration: none;
}

a.doc-card strong,
.sd-card .sd-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--kf-heading);
    display: block;
    margin-bottom: 0.5rem;
}

a.doc-card p,
.sd-card .sd-card-body p {
    margin: 0;
    color: var(--kf-text-light);
    font-size: 0.95rem;
    line-height: 1.5;
}

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

table {
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--kf-border);
}

table.docutils {
    border-collapse: collapse;
    margin: 1rem 0;
}

table.docutils th,
th {
    background: var(--color-background-secondary, var(--kf-bg-subtle));
    color: var(--color-foreground-primary, var(--kf-heading));
    font-weight: 600;
    padding: 0.5rem;
}

table.docutils td {
    padding: 0.5rem;
    border: 1px solid var(--color-background-border, var(--kf-border));
    color: var(--color-foreground-primary, var(--kf-heading));
}

/* ============================================
   ADMONITIONS
   ============================================ */

.admonition {
    border-radius: 6px;
    border: none;
    border-left: 3px solid var(--kf-blue);
}

.admonition.tip {
    background: rgba(129, 230, 217, 0.15);
    border-left-color: var(--kf-accent);
}

.admonition.note {
    background: rgba(66, 153, 225, 0.1);
}

.admonition.warning {
    background: rgba(251, 211, 141, 0.2);
    border-left-color: #f6ad55;
}

/* ============================================
   HR / DIVIDERS
   ============================================ */

hr {
    border: none;
    height: 1px;
    background: var(--kf-border);
    margin: 2rem 0;
}

/* ============================================
   MERMAID DIAGRAMS
   ============================================ */

.mermaid {
    text-align: center;
    margin: 1.5rem 0;
    padding: 1.5rem 1rem;
    border: 1px solid var(--kf-border);
    border-radius: 8px;
    overflow-x: auto;
}

@media (prefers-color-scheme: dark) {
    body:not([data-theme="light"]) .mermaid svg {
        filter: invert(0.85) hue-rotate(180deg);
    }
}

body[data-theme="dark"] .mermaid svg {
    filter: invert(0.85) hue-rotate(180deg);
}

/* ============================================
   CONTENT IMAGES
   ============================================ */

article img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   CONTENT WIDTH
   ============================================ */

@media (min-width: 67em) {
    .content {
        width: 54em;
        padding: 0 2em;
    }

    body.sidebar-collapsed .content {
        width: 70em;
        max-width: 100%;
    }
}

/* ============================================
   SIDEBAR TOGGLE (YouTube-style collapse)
   ============================================ */

@media (min-width: 67em) {
    .sidebar-drawer {
        transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                    min-width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    body.sidebar-collapsed .sidebar-drawer {
        width: 0 !important;
        min-width: 0 !important;
    }

    .sidebar-toggle-btn {
        position: fixed;
        top: 56px;
        left: 0.65rem;
        z-index: 99;
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: none;
        border-radius: 50%;
        cursor: pointer;
        color: var(--kf-text-light);
        padding: 0;
        line-height: 1;
        transition: background 0.15s, color 0.15s;
    }

    .sidebar-toggle-btn:hover {
        color: var(--kf-heading);
        background: rgba(128, 128, 128, 0.15);
    }

    .sidebar-toggle-btn:active {
        background: rgba(128, 128, 128, 0.25);
    }
}

@media (max-width: 66.99em) {
    .sidebar-toggle-btn {
        display: none !important;
    }
}

/* ============================================
   LANDING PAGE — Full-width homepage
   ============================================ */

/* Hide sidebar, ToC, and header chrome on the landing page */
body:has(.landing-page) .sidebar-drawer,
body:has(.landing-page) .toc-drawer,
body:has(.landing-page) .sidebar-toggle-btn,
body:has(.landing-page) .page-info {
    display: none !important;
}

body:has(.landing-page) .page {
    display: block !important;
    padding-top: 52px !important;
}

body:has(.landing-page) .main {
    margin-left: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
}

body:has(.landing-page) .content {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}

body:has(.landing-page) article {
    max-width: 100% !important;
    padding: 0 !important;
}

body:has(.landing-page) article > section {
    max-width: 100%;
    padding: 0;
}

body:has(.landing-page) h1 {
    border-bottom: none !important;
}

body:has(.landing-page) .bottom-of-page {
    display: none !important;
}

body:has(.landing-page) .content-icon-container,
body:has(.landing-page) .theme-toggle-container,
body:has(.landing-page) .theme-toggle-content,
body:has(.landing-page) .theme-toggle,
body:has(.landing-page) .related-pages,
body:has(.landing-page) .nav-overlay-icon,
body:has(.landing-page) .sidebar-toggle {
    display: none !important;
}

body:has(.landing-page) .article-container {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}


.landing-page {
    --lp-blue: #6ba8ff;
    --lp-blue-deep: #163a73;
    --lp-blue-glow: #4f9bff;
    --lp-navy: #0a1d40;
    /* Rich, saturated blue surfaces (lifted off near-black so it reads as blue) */
    --lp-surface: #16315c;
    --lp-surface-alt: #102444;
    --lp-text: #eaf1fb;
    --lp-text-muted: #a8c2e6;
    --lp-border: #2a4576;
    --lp-radius: 12px;

    font-family: 'Source Sans 3', 'Segoe UI', sans-serif;
    color: var(--lp-text);
    line-height: 1.6;
    background: linear-gradient(180deg, #0d2148 0%, #0b1c3c 100%);
}

/* ---- LANDING PAGE: LIGHT MODE ----
   The hero and footer keep their navy gradient (white text reads well on both),
   but the surfaces, cards, text, and borders flip to a light palette so the
   light/dark toggle visibly changes the homepage too. */
body[data-theme="light"] .landing-page {
    --lp-blue: #3182ce;
    --lp-blue-glow: #4299e1;
    --lp-surface: #ffffff;
    --lp-surface-alt: #f7fafc;
    --lp-text: #1a202c;
    --lp-text-muted: #4a5568;
    --lp-border: #e2e8f0;
    background: #ffffff;
}

@media (prefers-color-scheme: light) {
    body:not([data-theme="dark"]) .landing-page {
        --lp-blue: #3182ce;
        --lp-blue-glow: #4299e1;
        --lp-surface: #ffffff;
        --lp-surface-alt: #f7fafc;
        --lp-text: #1a202c;
        --lp-text-muted: #4a5568;
        --lp-border: #e2e8f0;
        background: #ffffff;
    }
}

.landing-page .section-title {
    font-family: 'DM Sans', sans-serif;
    font-weight: 700;
    font-size: 2rem;
    text-align: center;
    margin-bottom: 0.75rem;
    color: var(--lp-text);
    border: none !important;
    padding-bottom: 0 !important;
}

.landing-page .section-desc {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 2.5rem;
    color: var(--lp-text-muted);
    font-size: 1.1rem;
    line-height: 1.75;
}

/* ---- HERO ---- */

.hero {
    position: relative;
    background: linear-gradient(145deg, var(--lp-navy) 0%, #123a7e 48%, #1f5bb8 100%);
    padding: 6rem 2rem 5rem;
    text-align: center;
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(90, 156, 245, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(90, 156, 245, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 40px,
        rgba(255,255,255,0.01) 40px,
        rgba(255,255,255,0.01) 80px
    );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    letter-spacing: 0.5px;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(4px);
    background: rgba(255,255,255,0.05);
}

.hero-title {
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: #ffffff !important;
    margin: 0 0 1rem;
    letter-spacing: -0.5px;
    line-height: 1.1;
    border: none !important;
    padding: 0 !important;
}

.hero-title-line2 {
    white-space: nowrap;
}

.hero-tagline {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    color: rgba(255,255,255,0.75);
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.9rem;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 600;
    font-family: 'DM Sans', sans-serif;
    text-decoration: none !important;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-primary {
    background: var(--lp-blue);
    color: #fff !important;
    box-shadow: 0 2px 12px rgba(61, 123, 229, 0.35);
}

.btn-primary:hover {
    background: var(--lp-blue-glow);
    box-shadow: 0 4px 20px rgba(61, 123, 229, 0.45);
    transform: translateY(-1px);
    color: #fff !important;
}

.btn-secondary {
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.9) !important;
    border: 1px solid rgba(255,255,255,0.15);
    backdrop-filter: blur(4px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.14);
    color: #fff !important;
    transform: translateY(-1px);
}

.hero-sub {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.45);
}

/* ---- STATS BAR ---- */

.stats-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
    background: var(--lp-surface);
    border-bottom: 1px solid var(--lp-border);
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1.5rem;
}

.stat-value {
    font-family: 'DM Sans', sans-serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--lp-blue);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--lp-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-divider {
    width: 1px;
    height: 32px;
    background: var(--lp-border);
}

@media (max-width: 640px) {
    .stat-divider { display: none; }
    .stats-bar { gap: 0.5rem; }
    .stat { padding: 0.5rem 1rem; }
}

/* ---- WHAT IS ---- */

.what-is {
    padding: 4rem 2rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

/* ---- ARCHITECTURE / HOW IT WORKS ---- */

.architecture {
    padding: 3.5rem 2rem 4rem;
    max-width: 1040px;
    margin: 0 auto;
}

.arch-figure {
    margin: 1rem 0 0;
    background: #ffffff;
    border: 1px solid var(--lp-border);
    border-radius: var(--lp-radius);
    padding: 1.25rem;
    box-shadow: 0 10px 36px rgba(0, 0, 0, 0.28);
}

.arch-figure img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 6px;
}

/* ---- VIDEO / SEE IT IN ACTION ---- */

.video-section {
    padding: 3.5rem 2rem 4rem;
    max-width: 900px;
    margin: 0 auto;
}

.video-wrap {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    margin-top: 1rem;
    border-radius: var(--lp-radius);
    overflow: hidden;
    box-shadow: 0 10px 36px rgba(0, 0, 0, 0.28);
    border: 1px solid var(--lp-border);
}

.video-wrap iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

@media (max-width: 600px) {
    .arch-figure {
        padding: 0.75rem;
    }
}

/* ---- FEATURES GRID ---- */

.features {
    padding: 3rem 2rem 4rem;
    background: var(--lp-surface-alt);
    border-top: 1px solid var(--lp-border);
    border-bottom: 1px solid var(--lp-border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-card {
    --c: var(--lp-blue);
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-radius: var(--lp-radius);
    padding: 1.75rem;
    transition: all 0.25s ease;
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px color-mix(in srgb, var(--c) 18%, transparent);
    border-color: color-mix(in srgb, var(--c) 55%, var(--lp-border));
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--c) 13%, transparent);
    border-radius: 10px;
    margin-bottom: 1rem;
}

/* Override the inline blue stroke on the icon SVGs with the card's accent. */
.feature-icon svg {
    stroke: var(--c);
}

/* Muted accent per feature card. */
.features-grid .feature-card:nth-child(1) { --c: #6ba8ff; }
.features-grid .feature-card:nth-child(2) { --c: #4fd1c5; }
.features-grid .feature-card:nth-child(3) { --c: #b794f6; }
.features-grid .feature-card:nth-child(4) { --c: #68d391; }
.features-grid .feature-card:nth-child(5) { --c: #818cf8; }
.features-grid .feature-card:nth-child(6) { --c: #ed8936; }

.feature-card h3 {
    font-family: 'DM Sans', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--lp-text);
}

.feature-card p {
    color: var(--lp-text-muted);
    font-size: 0.95rem;
    line-height: 1.65;
    margin: 0;
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ---- FRAMEWORKS / CAPABILITIES CHIPS ---- */

.frameworks {
    padding: 3.5rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.framework-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.framework-chip {
    --c: var(--lp-blue);
    padding: 0.55rem 1.25rem;
    border: 1px solid color-mix(in srgb, var(--c) 32%, transparent);
    border-radius: 100px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--c);
    background: color-mix(in srgb, var(--c) 9%, var(--lp-surface));
    transition: all 0.2s ease;
    cursor: default;
}

.framework-chip:hover {
    border-color: color-mix(in srgb, var(--c) 60%, transparent);
    color: var(--c);
    background: color-mix(in srgb, var(--c) 17%, var(--lp-surface));
    transform: translateY(-1px);
}

/* A muted, distinct accent per capability — interesting but not loud. */
.framework-chip:nth-child(1) { --c: #6ba8ff; }
.framework-chip:nth-child(2) { --c: #4fd1c5; }
.framework-chip:nth-child(3) { --c: #b794f6; }
.framework-chip:nth-child(4) { --c: #68d391; }
.framework-chip:nth-child(5) { --c: #e6b566; }
.framework-chip:nth-child(6) { --c: #f48fb1; }
.framework-chip:nth-child(7) { --c: #818cf8; }
.framework-chip:nth-child(8) { --c: #ed8936; }

/* ---- DOC NAV ---- */

.doc-nav {
    padding: 4rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.landing-page .doc-cards {
    margin: 0;
}

.landing-page a.doc-card {
    --c: var(--lp-blue);
    background: var(--lp-surface);
    border-color: var(--lp-border) !important;
    border-left: 3px solid color-mix(in srgb, var(--c) 55%, transparent) !important;
}

.landing-page a.doc-card strong {
    color: var(--lp-text);
}

.landing-page a.doc-card p {
    color: var(--lp-text-muted);
}

.landing-page a.doc-card:hover {
    border-color: color-mix(in srgb, var(--c) 55%, var(--lp-border)) !important;
    border-left-color: var(--c) !important;
    box-shadow: 0 6px 20px color-mix(in srgb, var(--c) 22%, transparent);
}

/* Muted accent per documentation card. */
.landing-page .doc-cards a.doc-card:nth-child(1) { --c: #6ba8ff; }
.landing-page .doc-cards a.doc-card:nth-child(2) { --c: #4fd1c5; }
.landing-page .doc-cards a.doc-card:nth-child(3) { --c: #b794f6; }
.landing-page .doc-cards a.doc-card:nth-child(4) { --c: #68d391; }
.landing-page .doc-cards a.doc-card:nth-child(5) { --c: #818cf8; }
.landing-page .doc-cards a.doc-card:nth-child(6) { --c: #ed8936; }

/* ---- QUICKSTART CODE ---- */

.quickstart {
    padding: 3rem 2rem 4rem;
    background: var(--lp-surface-alt);
    border-top: 1px solid var(--lp-border);
    border-bottom: 1px solid var(--lp-border);
}

.code-block-wrapper {
    position: relative;
    max-width: 680px;
    margin: 1.5rem auto;
    border-radius: var(--lp-radius);
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}

.code-lang {
    background: #2d2d2d;
    color: #858585;
    padding: 0.5rem 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 1px solid #3a3a3a;
}

.landing-code {
    background: #1e1e1e !important;
    color: #d4d4d4 !important;
    padding: 1.25rem 1.5rem !important;
    margin: 0 !important;
    border-radius: 0 !important;
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 0.9rem !important;
    line-height: 1.7 !important;
    overflow-x: auto;
}

.landing-code .hl-kw { color: #569cd6; }
.landing-code .hl-fn { color: #9cdcfe; }
.landing-code .hl-num { color: #b5cea8; }
.landing-code .hl-str { color: #ce9178; }
.landing-code .hl-cm { color: #6a9955; }

.quickstart-note {
    text-align: center;
    color: var(--lp-text-muted);
    font-size: 0.95rem;
    margin-top: 1.25rem;
}

.quickstart-note a {
    color: var(--lp-blue) !important;
    text-decoration: none;
    font-weight: 600;
}

.quickstart-note a:hover {
    text-decoration: underline;
}

/* ---- COMMUNITY ---- */

.community {
    padding: 4rem 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.community-links {
    display: grid;
    /* 8 cards in a clean, fully aligned 4 x 2 grid (no orphaned row). */
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.community-card {
    --c: var(--lp-blue);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.75rem 1rem;
    border: 1px solid var(--lp-border);
    border-radius: var(--lp-radius);
    background: var(--lp-surface);
    text-decoration: none !important;
    text-align: center;
    transition: all 0.2s ease;
    color: var(--lp-text-muted);
}

.community-card:hover {
    border-color: color-mix(in srgb, var(--c) 55%, var(--lp-border));
    transform: translateY(-2px);
    box-shadow: 0 6px 18px color-mix(in srgb, var(--c) 18%, transparent);
}

.community-card svg {
    color: var(--c);
}

.comm-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: color-mix(in srgb, var(--c) 14%, transparent);
    line-height: 1;
}

.comm-icon svg {
    width: 30px;
    height: 30px;
    color: var(--c);
}

/* Muted accent per community card. */
.community-links .community-card:nth-child(1) { --c: #6ba8ff; }
.community-links .community-card:nth-child(2) { --c: #b794f6; }
.community-links .community-card:nth-child(3) { --c: #4fd1c5; }
.community-links .community-card:nth-child(4) { --c: #68d391; }
.community-links .community-card:nth-child(5) { --c: #f48fb1; }
.community-links .community-card:nth-child(6) { --c: #818cf8; }
.community-links .community-card:nth-child(7) { --c: #ed8936; }
.community-links .community-card:nth-child(8) { --c: #e6b566; }

.community-card strong {
    color: var(--lp-text);
    font-family: 'DM Sans', sans-serif;
    font-size: 1.05rem;
}

.community-card span {
    font-size: 0.85rem;
    color: var(--lp-text-muted);
}

@media (max-width: 768px) {
    .community-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .community-links {
        grid-template-columns: 1fr;
    }
}

/* ---- FOOTER ---- */

.landing-footer {
    background: var(--lp-navy);
    padding: 2.5rem 2rem;
    text-align: center;
}

.footer-kubeflow {
    color: rgba(255,255,255,0.78) !important;
    font-size: 1rem !important;
    max-width: 620px;
    margin: 0 auto 1.5rem !important;
    line-height: 1.6;
}

.footer-cncf-link {
    display: inline-block;
    margin: 0.5rem auto 1.25rem;
    opacity: 0.9;
    transition: opacity 0.2s ease;
}

.footer-cncf-link:hover {
    opacity: 1;
}

.footer-cncf {
    width: 280px;
    max-width: 80%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.footer-inner p {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    margin: 0.25rem 0;
}

.footer-inner a {
    color: var(--lp-blue-glow) !important;
    text-decoration: none;
}

.footer-inner a:hover {
    text-decoration: underline;
}

.footer-copy {
    font-size: 0.8rem !important;
    color: rgba(255,255,255,0.35) !important;
    margin-top: 0.5rem !important;
}

/* ---- ENTRANCE ANIMATIONS ---- */

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-badge { animation: fadeUp 0.6s ease both; }
.hero-title { animation: fadeUp 0.6s 0.1s ease both; }
.hero-tagline { animation: fadeUp 0.6s 0.2s ease both; }
.hero-actions { animation: fadeUp 0.6s 0.3s ease both; }
.hero-sub { animation: fadeUp 0.6s 0.4s ease both; }

/* JS fallback for browsers without :has() */
body.is-landing .sidebar-drawer,
body.is-landing .toc-drawer,
body.is-landing .sidebar-toggle-btn,
body.is-landing .page-info {
    display: none !important;
}

body.is-landing .page {
    display: block !important;
    padding-top: 52px !important;
}

body.is-landing .main {
    margin-left: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
}

body.is-landing .content {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}

body.is-landing article {
    max-width: 100% !important;
    padding: 0 !important;
}

body.is-landing .article-container {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
}

body.is-landing .bottom-of-page {
    display: none !important;
}

body.is-landing .content-icon-container,
body.is-landing .theme-toggle-container,
body.is-landing .theme-toggle-content,
body.is-landing .theme-toggle,
body.is-landing .related-pages,
body.is-landing .nav-overlay-icon,
body.is-landing .sidebar-toggle {
    display: none !important;
}

/* Scroll-triggered entrance animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:nth-child(2).animate-on-scroll { transition-delay: 0.05s; }
.feature-card:nth-child(3).animate-on-scroll { transition-delay: 0.1s; }
.feature-card:nth-child(4).animate-on-scroll { transition-delay: 0.15s; }
.feature-card:nth-child(5).animate-on-scroll { transition-delay: 0.2s; }
.feature-card:nth-child(6).animate-on-scroll { transition-delay: 0.25s; }

.stat:nth-child(3).animate-on-scroll { transition-delay: 0.05s; }
.stat:nth-child(5).animate-on-scroll { transition-delay: 0.1s; }
.stat:nth-child(7).animate-on-scroll { transition-delay: 0.15s; }

.community-card:nth-child(2).animate-on-scroll { transition-delay: 0.05s; }
.community-card:nth-child(3).animate-on-scroll { transition-delay: 0.1s; }
.community-card:nth-child(4).animate-on-scroll { transition-delay: 0.15s; }