:root {
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --accent-color: #58a6ff;
    --secondary-accent: #3fb950;
    --border-color: #30363d;
    --card-bg: #161b22;
    --user-msg-bg: #1f2937;
    --assistant-msg-bg: #161b22;
    --muted: #8b949e;
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
}

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

header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    text-align: center;
}

.site-header {
    text-align: left;
    background: rgba(13, 17, 23, 0.92);
    position: sticky;
    top: 0;
    z-index: 20;
}

.site-nav {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-brand {
    color: #fff;
    text-decoration: none;
    font-size: 1.35rem;
    font-weight: 800;
}

.site-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.site-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.92rem;
}

.site-links a:hover { color: var(--accent-color); }

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ── Landing hero ── */

.hero {
    padding: 4rem 0;
    text-align: center;
}

.product-hero {
    padding: 5rem 0 4rem;
    border-bottom: 1px solid var(--border-color);
}

.hero-inner {
    text-align: center;
}

.hero-logo {
    width: 132px;
    margin-bottom: 1.5rem;
}

.eyebrow {
    color: var(--secondary-accent);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 800;
    margin: 0 0 0.8rem;
}

.product-hero h1 {
    max-width: 860px;
    margin: 0 auto;
    color: #fff;
    font-size: clamp(2.3rem, 6vw, 4.5rem);
    line-height: 1.05;
}

.hero-copy {
    max-width: 760px;
    margin: 1.25rem auto 0;
    color: var(--muted);
    font-size: 1.18rem;
}

.business-band {
    border-bottom: 1px solid var(--border-color);
    background: var(--card-bg);
}

.business-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
}

.business-inner h2 {
    color: #fff;
    margin: 0 0 0.35rem;
}

.business-inner p {
    color: var(--muted);
    margin: 0;
}

.section-heading {
    max-width: 760px;
    margin: 0 0 1.5rem;
}

.section-heading h2 {
    color: #fff;
    margin-bottom: 0.35rem;
}

.section-heading p {
    color: var(--muted);
    margin: 0;
}

.install-section {
    padding-top: 1rem;
    padding-bottom: 2rem;
}

.hero img {
    max-width: 200px;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 3rem;
    color: #fff;
    margin: 0;
}

.hero p {
    font-size: 1.5rem;
    color: #8b949e;
}

.cta {
    margin-top: 2rem;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.2s;
    white-space: nowrap;
}

.btn-primary { background-color: #238636; color: #fff; }
.btn-primary:hover { background-color: #2ea043; }

.btn-secondary {
    background-color: #21262d;
    color: #c9d1d9;
    border: 1px solid var(--border-color);
    margin-left: 1rem;
}
.btn-secondary:hover { background-color: #30363d; }

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 4rem 0;
}

.academy-callout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.academy-callout .btn { flex-shrink: 0; }

.academy-callout h2 {
    color: #fff;
    margin: 0 0 0.35rem;
}

.academy-callout p {
    color: var(--muted);
    margin: 0;
}

.feature-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 8px;
}

.feature-card h3 { color: var(--accent-color); margin-top: 0; }

footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    color: #8b949e;
    font-size: 0.9rem;
}

.footer-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.5rem;
}

.footer-brand {
    color: #fff;
    font-weight: 800;
    margin: 0 0 0.25rem;
}

.footer-inner p {
    margin: 0;
}

.footer-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.75rem 1.25rem;
}

.footer-links a {
    color: var(--accent-color);
    font-weight: 700;
    text-decoration: none;
}

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

pre {
    background-color: #000;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    border: 1px solid var(--border-color);
}

code {
    font-family: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
    font-size: 0.9rem;
}

/* ── Docs page layout (sidebar + content) ── */

.docs-container {
    display: flex;
    margin-top: 2rem;
    max-width: 1200px;
}

.sidebar {
    width: 260px;
    padding-right: 2rem;
    border-right: 1px solid var(--border-color);
    position: sticky;
    top: 2rem;
    height: calc(100vh - 6rem);
    overflow-y: auto;
    flex-shrink: 0;
}

.sidebar ul {
    list-style-type: none;
    padding-left: 0;
    margin: 0;
}

.sidebar li { margin-bottom: 0.5rem; }

.sidebar a {
    display: block;
    color: var(--text-color);
    text-decoration: none;
    padding: 0.25rem 0;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.sidebar a:hover { color: var(--accent-color); }

.sidebar ul ul { padding-left: 1rem; margin-top: 0.25rem; }

.content {
    flex: 1;
    min-width: 0;
    padding-left: 2rem;
    max-width: 900px;
}

.content h1,
.content h2,
.content h3 { color: #fff; }

.content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1rem 0;
    overflow-x: auto;
    display: block;
}

.content th,
.content td {
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    text-align: left;
    white-space: nowrap;
}

.content th { background-color: var(--card-bg); }

/* ── Blog layout ── */

.blog-container {
    max-width: 780px;
    margin: 0 auto;
    padding: 2rem 20px;
}

.blog-container h1,
.blog-container h2,
.blog-container h3 { color: #fff; }

/* ── Responsive: tablet & mobile ── */

@media (max-width: 900px) {
    .docs-container { flex-direction: column; }
    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-right: 0;
        padding-bottom: 1rem;
        margin-bottom: 1rem;
        overflow-y: visible;
    }
    .sidebar ul { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
    .sidebar ul ul { padding-left: 0; }
    .sidebar li { margin-bottom: 0; }
    .sidebar a { padding: 0.15rem 0; }
    .content { padding-left: 0; }
    .content th,
    .content td { white-space: normal; }
}

@media (max-width: 768px) {
    header { padding: 1rem 0; }
    header nav { flex-wrap: wrap; gap: 0.5rem; justify-content: center; }
    .site-nav { align-items: flex-start; justify-content: flex-start; }
    .site-links { gap: 0.75rem; }
    header nav a { margin-right: 0.75rem !important; }
    .product-hero { padding: 3rem 0 2.5rem; }
    .business-inner { flex-direction: column; align-items: flex-start; }
    .footer-inner { flex-direction: column; }
    .footer-links { justify-content: flex-start; }
    .container { padding: 0 16px; }
    .hero { padding: 2rem 0; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1.1rem; }
    .btn-secondary { margin-left: 0; margin-top: 0.5rem; }
    .academy-callout { flex-direction: column; align-items: flex-start; }
    .features { grid-template-columns: 1fr; padding: 2rem 0; }
    .blog-container { padding: 1rem 16px; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.6rem; }
    .hero p { font-size: 1rem; }
    .hero img { max-width: 150px; }
}


/* -- Careers and contact -- */

.career-hero,
.contact-hero {
    padding: 4rem 0 3rem;
    border-bottom: 1px solid var(--border-color);
}

.career-hero-inner,
.contact-inner {
    text-align: center;
}

.career-logo {
    width: 96px;
    margin-bottom: 1.25rem;
}

.career-hero h1,
.contact-hero h1 {
    max-width: 820px;
    margin: 0 auto;
    color: #fff;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.08;
}

.contact-line,
.contact-email {
    margin: 1.25rem 0 0;
    color: var(--muted);
}

.contact-line a,
.contact-email a,
footer a {
    color: var(--accent-color);
}

.contact-email a {
    font-size: 1.25rem;
    font-weight: 800;
}

.career-section,
.application-section {
    padding-top: 3rem;
    padding-bottom: 1rem;
}

.job-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}

.job-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
}

.job-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.job-card h3 {
    color: #fff;
    margin: 0;
}

.job-card-top span {
    flex-shrink: 0;
    color: var(--secondary-accent);
    font-size: 0.82rem;
    font-weight: 800;
}

.job-card p,
.job-card li {
    color: var(--muted);
}

.job-card ul {
    margin: 1rem 0 0;
    padding-left: 1.2rem;
}

.application-form {
    display: grid;
    gap: 1rem;
    max-width: 760px;
    padding: 1.25rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.application-form label {
    display: grid;
    gap: 0.35rem;
    color: #fff;
    font-weight: 700;
}

.application-form input,
.application-form select,
.application-form textarea {
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: #0d1117;
    color: var(--text-color);
    padding: 0.7rem 0.8rem;
    font: inherit;
}

.application-form textarea {
    resize: vertical;
}

.application-form button {
    justify-self: start;
    border: 0;
    cursor: pointer;
}

.application-form button:disabled {
    cursor: wait;
    opacity: 0.7;
}

.form-status {
    min-height: 1.5rem;
    margin: 0;
    color: var(--secondary-accent);
    font-weight: 700;
}

@media (max-width: 768px) {
    .career-hero,
    .contact-hero { padding: 3rem 0 2rem; }
    .form-row { grid-template-columns: 1fr; }
    .job-card-top { flex-direction: column; gap: 0.35rem; }
}