@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:ital,wght@0,400;0,500;1,400&display=swap');
@import url('https://fonts.googleapis.com/css?family=Roboto+Condensed|Roboto+Mono:400,400i,500,500i|Roboto+Slab:400,500|Roboto:400,500,500i&display=swap&subset=cyrillic');

:root,
[data-theme="light"] {
    --bg: #ffffff;
    --bg-soft: #f6f8fa;
    --bg-hover: #eaeef3;
    --text: #0f172a;
    --text-muted: #5b6b81;
    --border: #e3e8ef;
    --accent: #2563eb;
    --accent-2: #7c3aed;
    --accent-soft: rgba(37, 99, 235, 0.09);
    --red: #d1242f;
    --shadow: rgba(15, 23, 42, 0.08);
}

[data-theme="dark"] {
    --bg: #0b1220;
    --bg-soft: #121a2b;
    --bg-hover: #1b2740;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --border: #243349;
    --accent: #60a5fa;
    --accent-2: #a78bfa;
    --accent-soft: rgba(96, 165, 250, 0.13);
    --red: #ff7b72;
    --shadow: rgba(0, 0, 0, 0.5);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

::selection {
    background: var(--accent-soft);
}

body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, 'Segoe UI', sans-serif;
    font-size: 15px;
    line-height: 1.6;
}

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

h1 {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h3 {
    position: sticky;
    top: 0;
    z-index: 3;
    margin: 0 -16px;
    padding: 10px 16px;
    font-size: 20px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

h3::before {
    content: '';
    display: inline-block;
    width: 9px;
    height: 9px;
    margin-right: 12px;
    border-radius: 3px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

h4 {
    font-size: 14px;
    color: var(--text-muted);
}

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

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

ul, ol {
    list-style: none;
}

ul, ol, p {
    margin: 0;
    padding: 0;
}

table {
    font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
    font-size: 13px;
    line-height: 1.5;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

td, th {
    text-align: left;
    padding: 5px 12px;
    border: 0;
    border-bottom: 1px solid var(--border);
}

td + td, td + th, th + td, th + th {
    border-left: 1px solid var(--border);
}

tr:last-child > td, tr:last-child > th {
    border-bottom: 0;
}

th {
    vertical-align: top;
    font-weight: 500;
    background: var(--bg-soft);
}

pre, code {
    margin: 0;
    padding: 0;
    font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
    font-size: 13px;
}

code {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1px 6px;
}

td code, th code, pre code {
    background: none;
    border: 0;
    padding: 0;
    border-radius: 0;
}

button,
input[type="submit"] {
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 4px 12px;
    color: var(--text);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
}

button:hover,
input[type="submit"]:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}

/* header ------------------------------------------------------------ */

.app-header {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 56px;
    padding: 0 24px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.app-brand {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.app-brand:hover {
    color: inherit;
}

.app-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 1px 8px;
}

.app-nav {
    display: flex;
    gap: 4px;
    margin-left: 24px;
}

.app-nav a,
.app-actions a {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    padding: 5px 12px;
    border-radius: 8px;
}

.app-nav a:hover,
.app-actions a:hover {
    color: var(--text);
    background: var(--bg-hover);
}

.app-nav a.active {
    color: var(--accent);
    background: var(--accent-soft);
}

.app-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.app-actions .app-theme-toggle {
    width: 30px;
    height: 30px;
    padding: 4px 0;
    line-height: 22px;
    font-size: 15px;
    text-align: center;
    border: 1px solid var(--border);
    box-sizing: border-box;
}

[data-theme="dark"] .app-theme-toggle .if-light { display: none; }
:root:not([data-theme="dark"]) .app-theme-toggle .if-dark { display: none; }

/* sidebar ------------------------------------------------------------ */

.app-side {
    width: 240px;
    box-sizing: border-box;
    padding: 16px 12px;
    border-right: 1px solid var(--border);
}

.app-side-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 0 10px 10px;
}

.app-toc a {
    display: block;
    font-size: 13.5px;
    color: var(--text-muted);
    padding: 4px 10px;
    border-radius: 6px;
}

.app-toc a:hover {
    color: var(--text);
    background: var(--bg-hover);
}

.app-toc a.active {
    color: var(--accent);
    background: var(--accent-soft);
    font-weight: 500;
}

/* content ------------------------------------------------------------ */

.app-main {
    background: var(--bg);
}

.app-content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 28px 40px 50vh;
}

.app-cover {
    display: block;
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
}

/* demo cards (demos page) -------------------------------------------- */

.app-demo {
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.app-demo-head {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
}

.app-demo-head h4 {
    flex: 1;
    margin: 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
}

.app-demo .CodeMirror {
    border: 0;
    border-radius: 0;
}

/* playground (try page) ----------------------------------------------- */

.app-try-pane-editor {
    width: 50%;
}

.app-try-divider {
    width: 5px;
    background: var(--border);
    cursor: col-resize;
}

.app-try-divider:hover,
.app-try-dragging .app-try-divider {
    background: var(--accent);
}

.app-try-dragging {
    cursor: col-resize;
    user-select: none;
}

.app-try-dragging .app-try-preview {
    pointer-events: none;
}

.app-try-label {
    display: flex;
    align-items: center;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 6px 16px;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
}

.app-try-prefill {
    font: inherit;
    font-size: 12px;
    text-transform: none;
    letter-spacing: normal;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2px 6px;
    margin-left: auto;
}

.app-try-editor .CodeMirror {
    height: 100%;
    border: 0;
    border-radius: 0;
}

.app-try-preview {
    background: #fff;
}

/* preview modal (demos page) ----------------------------------------- */

.app-modal {
    z-index: 100;
    background: rgba(2, 6, 23, 0.55);
    backdrop-filter: blur(3px);
}

.app-resize-body {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
    overflow: hidden;
}

.app-resize-handle {
    border-radius: 8px;
}

.app-resize-handle:hover {
    background: rgba(148, 163, 184, 0.35);
}

/* demo blocks keep their fixed light backgrounds (sm.css color classes),
   so text inside them must stay dark even when the page theme is dark */
[data-theme="dark"] .silver,
[data-theme="dark"] .white,
[data-theme="dark"] .red,
[data-theme="dark"] .green,
[data-theme="dark"] .blue,
[data-theme="dark"] .yellow,
[data-theme="dark"] .cyan,
[data-theme="dark"] .checkerboard,
[data-theme="dark"] .rainbow {
    color: #1f2328;
}

/* helpers used by the content partials ------------------------------- */

.app-background { background: var(--bg-soft); }
.app-border { border: 1px solid var(--border); }
.app-border-red { border: 1px solid var(--red); }

.app-ff-roboto { font-family: 'Roboto', sans-serif; }
.app-ff-roboto-con { font-family: 'Roboto Condensed', sans-serif; }
.app-ff-roboto-mono { font-family: 'Roboto Mono', monospace; }
.app-ff-roboto-slab { font-family: 'Roboto Slab', serif; }

.app-pal-header { background: var(--bg-soft); color: var(--text); }
.app-pal-active { background: var(--accent-soft); color: var(--accent); }

.n { color: var(--red); }

.max-w1140 { max-width: 1140px; }
.lh20 { line-height: 20px; }
.mla { margin-left: auto; }
.w250 { width: 250px; }
.sticky-t { position: sticky; top: 0; }
.sticky-t50 { position: sticky; top: 50px; }

/* --------------- */
.hover-red:hover { color: red; }
.active-red.active { color: red; }
.hover-rot90:hover { transform: rotate(90deg); }
.active-rot90.active { transform: rotate(90deg); }

.toggle.active .if-off { display: none; }
.toggle:not(.active) .if-on { display: none; }

.toggle2.active:hover .if-on { display: none; }
.toggle2.active:not(:hover) .if-off { display: none; }
.toggle2:not(.active):hover .if-off { display: none; }
.toggle2:not(.active):not(:hover) .if-on { display: none; }

.behavior-hov1 { transition: color 0.3s; }
.behavior-hov1:hover,
.behavior-hov1.active { color: red; }
.behavior-rot90 { transition: transform 0.3s; }
.behavior-rot90:hover,
.behavior-rot90.active { transform: rotate(90deg); }

.toggle-opacity .if-on,
.toggle-opacity .if-off { transition: opacity 0.25s; }
.toggle-opacity:hover .if-off { opacity: 0; }
.toggle-opacity:not(:hover).active .if-off { opacity: 0; }
.toggle-opacity:not(:hover):not(.active) .if-on { opacity: 0; }

.toggle-rot90 .if-on { transition: transform 0.25s; }
.toggle-rot90:hover .if-on { transform: rotate(90deg); }
.toggle-rot90:not(:hover).active .if-on { transform: rotate(90deg); }
/* --------------- */


.CodeMirror {
    width: auto;
    height: auto;
    font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
    font-size: 13px;
    line-height: 1.4em;
    z-index: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
}

.CodeMirror-scroll {
    min-height: 100px;
}