/* myStack Documentation — extends landing monochrome design */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    --gray-950: #0a0a0a;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius-sm: 8px;
    --radius: 12px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --sidebar-width: 260px;
    --nav-height: 64px;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-900);
    background: var(--white);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
}

.nav-container {
    display: flex;
    align-items: center;
    height: var(--nav-height);
    min-width: 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    gap: 8px;
    font-weight: 700;
    font-size: 18px;
}

.logo-img {
    height: 32px;
    width: auto;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    flex-shrink: 1;
    min-width: 0;
    margin-left: 40px;
    margin-right: auto;
    gap: 28px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    white-space: nowrap;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--black);
}

.nav-actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    gap: 12px;
}

.nav-actions .btn {
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
}

.nav-actions .btn-ghost {
    padding: 8px 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn-ghost:hover {
    color: var(--black);
}

.btn-primary {
    background: var(--black);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--gray-800);
}

.btn-outline {
    background: transparent;
    color: var(--black);
    border: 1px solid var(--gray-300);
}

/* Docs layout */
.docs-shell {
    display: flex;
    padding-top: var(--nav-height);
    min-height: 100vh;
}

.docs-sidebar {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--nav-height));
    overflow-y: auto;
    border-right: 1px solid var(--gray-200);
    background: var(--gray-50);
    padding: 24px 16px;
}

.docs-sidebar h3 {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin: 20px 0 8px;
}

.docs-sidebar h3:first-child {
    margin-top: 0;
}

.docs-sidebar a {
    display: block;
    font-size: 14px;
    color: var(--gray-700);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 2px;
}

.docs-sidebar a:hover {
    background: var(--gray-200);
    color: var(--black);
}

.docs-sidebar a.active {
    background: var(--black);
    color: var(--white);
    font-weight: 600;
}

.docs-main {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 48px 48px 96px;
    max-width: 860px;
}

.docs-main h1 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.docs-main .lead {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 32px;
}

.docs-main h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 48px 0 16px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

.docs-main h2:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 32px;
}

.docs-main h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 24px 0 12px;
}

.docs-main p,
.docs-main li {
    color: var(--gray-700);
    margin-bottom: 12px;
}

.docs-main ul,
.docs-main ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.docs-main code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.875em;
    background: var(--gray-100);
    padding: 2px 6px;
    border-radius: 4px;
}

.docs-main pre {
    background: var(--gray-950);
    color: #f5f5f5;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 16px 0 24px;
    font-size: 14px;
    line-height: 1.5;
}

.docs-main pre code {
    background: none;
    padding: 0;
    color: #f5f5f5;
}

.callout {
    border-left: 4px solid var(--black);
    background: var(--gray-50);
    padding: 16px 20px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 24px 0;
}

.callout.warning {
    border-color: #ca8a04;
    background: #fefce8;
}

.callout.info {
    border-color: #2563eb;
    background: #eff6ff;
}

.callout strong {
    display: block;
    margin-bottom: 4px;
    color: var(--gray-900);
}

.steps {
    counter-reset: step;
    list-style: none;
    padding-left: 0;
}

.steps li {
    counter-increment: step;
    position: relative;
    padding-left: 48px;
    margin-bottom: 20px;
}

.steps li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 28px;
    height: 28px;
    background: var(--black);
    color: var(--white);
    border-radius: 50%;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.table-wrap {
    overflow-x: auto;
    margin: 16px 0 24px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px solid var(--gray-200);
}

th {
    font-weight: 600;
    color: var(--gray-900);
    background: var(--gray-50);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.doc-card {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.doc-card:hover {
    border-color: var(--gray-400);
    box-shadow: var(--shadow-sm);
}

.doc-card h3 {
    font-size: 16px;
    margin: 0 0 8px;
}

.doc-card p {
    font-size: 14px;
    margin: 0;
    color: var(--gray-600);
}

.docs-footer {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
    font-size: 14px;
    color: var(--gray-500);
}

.docs-footer a {
    color: var(--gray-700);
    text-decoration: underline;
}

.flow-diagram {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 24px;
    font-family: ui-monospace, monospace;
    font-size: 13px;
    line-height: 1.8;
    white-space: pre;
    overflow-x: auto;
    margin: 16px 0 24px;
}

@media (max-width: 900px) {
    .docs-sidebar {
        display: none;
    }

    .docs-main {
        margin-left: 0;
        padding: 32px 24px 64px;
    }

    .nav-links {
        display: none;
    }
}