/* ==========================================================================
   peyk docs - modern theme layer on top of Furo

   Colours live in docs/conf.py (light_css_variables / dark_css_variables);
   this file only holds shape, spacing and layout.  Everything degrades
   gracefully: if a modern CSS feature is missing the stock Furo look remains.
   ========================================================================== */

:root {
  --peyk-radius: 12px;
  --peyk-radius-lg: 16px;
  --peyk-ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --peyk-gradient: linear-gradient(135deg, #1d4ed8 0%, #2563eb 45%, #06b6d4 100%);
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection {
  background: color-mix(in srgb, var(--color-brand-primary) 28%, transparent);
}

/* ---- typography ---------------------------------------------------------- */

article {
  line-height: 1.72;
}

article h1,
article h2,
article h3,
article h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

article h1 {
  font-weight: 800;
  letter-spacing: -0.03em;
}

article h2 {
  margin-top: 2.6rem;
}

article p,
article li {
  color: var(--color-foreground-primary);
}

/* ---- sidebar: one small logo + name on a single row ---------------------- */

.sidebar-brand {
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: 0.75rem;
  padding: 1.15rem 1.1rem 0.4rem;
  text-align: left;
  text-decoration: none;
}

.sidebar-logo-container {
  flex: none;
}

.sidebar-logo {
  display: block;
  height: 2.2rem;
  width: auto;
  max-width: none;
  margin: 0;
  filter: drop-shadow(0 4px 10px rgba(37, 99, 235, 0.28));
}

.sidebar-brand-text {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.2;
}

/* search box: rounded field with a brand-coloured focus ring */
.sidebar-search-container {
  margin: 0.55rem 0.8rem 0.6rem;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px var(--color-sidebar-search-border);
  transition: box-shadow 0.15s var(--peyk-ease);
}

.sidebar-search-container:focus-within {
  box-shadow: inset 0 0 0 2px var(--color-brand-primary);
}

.sidebar-search {
  border: 0 !important;
}

/* navigation tree: rounded "pill" items instead of full-bleed rows */
.sidebar-tree {
  padding: 0 0.55rem;
}

.sidebar-tree .reference {
  border-radius: 8px;
}

.sidebar-tree .current-page > .reference {
  background: var(--color-sidebar-item-background--current);
  color: var(--color-brand-primary);
  font-weight: 600;
}

.sidebar-tree .caption,
.sidebar-tree :not(.caption) > .caption-text {
  letter-spacing: 0.09em;
}

.sidebar-scroll,
.toc-scroll,
html {
  scrollbar-width: thin;
}

/* ---- content: code, admonitions, tables ---------------------------------- */

.highlight {
  border: 1px solid var(--color-background-border);
  border-radius: var(--peyk-radius);
}

article pre {
  line-height: 1.65;
}

article code.literal,
article .sig-inline {
  border-radius: 0.4em;
  padding: 0.12em 0.4em;
}

.admonition,
details {
  border-radius: var(--peyk-radius);
  overflow: hidden;
}

table.docutils {
  border: 1px solid var(--color-table-border);
  border-radius: var(--peyk-radius);
  box-shadow: none;
  overflow: hidden;
}

/* autodoc signatures */
article dt.sig {
  border-radius: 0 0.6rem 0.6rem 0;
}

/* previous / next page links */
.related-pages a {
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--color-background-border);
  border-radius: var(--peyk-radius);
  text-decoration: none;
  transition: border-color 0.15s var(--peyk-ease), background-color 0.15s var(--peyk-ease);
}

.related-pages a:hover {
  border-color: var(--color-brand-primary);
  background: var(--peyk-accent-soft);
}

/* ==========================================================================
   Landing page (docs/index.rst carries ``.. rst-class:: peyk-home``)
   ========================================================================== */

/* title with the small logo sitting next to the text */
.peyk-home > h1 {
  margin: 0.4rem 0 0;
  font-size: clamp(2.1rem, 1.5rem + 2vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.peyk-home > h1::before {
  content: "";
  display: inline-block;
  width: 0.88em;
  height: 1.06em;
  margin-right: 0.5em;
  vertical-align: -0.14em;
  background: url("logo.svg") center / contain no-repeat;
}

/* gradient headline text (only where background-clip:text exists) */
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .peyk-home > h1 {
    background-image: linear-gradient(
      100deg,
      var(--color-foreground-primary) 0%,
      var(--color-foreground-primary) 38%,
      var(--color-brand-primary) 78%,
      var(--peyk-cyan) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }

  .peyk-home > h1 > .headerlink {
    -webkit-text-fill-color: var(--color-foreground-border);
  }
}

.peyk-home > h1 + p {
  max-width: 42rem;
  margin: 1rem 0 0;
  font-size: 1.14rem;
  line-height: 1.65;
  color: var(--color-foreground-secondary);
}

/* call-to-action buttons (a paragraph of two links inside a container) */
.peyk-actions p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.4rem 0 0.4rem;
}

.peyk-actions a {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--color-background-border);
  border-radius: 999px;
  background: var(--color-background-primary);
  color: var(--color-foreground-primary);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.15s var(--peyk-ease), color 0.15s var(--peyk-ease),
    transform 0.15s var(--peyk-ease), filter 0.15s var(--peyk-ease);
}

.peyk-actions a:hover {
  border-color: var(--color-brand-primary);
  color: var(--color-brand-primary);
}

.peyk-actions a:first-child {
  border-color: transparent;
  background-image: var(--peyk-gradient);
  color: #ffffff;
  box-shadow: 0 8px 20px -10px rgba(37, 99, 235, 0.8);
}

.peyk-actions a:first-child:hover {
  color: #ffffff;
  filter: brightness(1.08);
  transform: translateY(-1px);
}

/* the toctrees become full-width cards; long lists flow into two columns */
.peyk-home > .toctree-wrapper {
  position: relative;
  margin: 1.2rem 0 0;
  padding: 1.3rem 1.4rem 1.1rem;
  border: 1px solid var(--color-background-border);
  border-radius: var(--peyk-radius-lg);
  background: var(--color-background-primary);
  transition: border-color 0.18s var(--peyk-ease), box-shadow 0.18s var(--peyk-ease),
    transform 0.18s var(--peyk-ease);
}

/* small gradient tab on top of every card */
.peyk-home > .toctree-wrapper::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 1.4rem;
  width: 2.4rem;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--peyk-gradient);
}

.peyk-home > .toctree-wrapper:hover {
  border-color: color-mix(in srgb, var(--color-brand-primary) 40%, var(--color-background-border));
  box-shadow: 0 16px 32px -20px color-mix(in srgb, var(--color-brand-primary) 70%, transparent);
  transform: translateY(-2px);
}

.peyk-home .toctree-wrapper .caption {
  margin: 0.1rem 0 0.8rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
}

.peyk-home .toctree-wrapper ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.peyk-home .toctree-wrapper > ul {
  columns: 2 16rem;
  column-gap: 2.5rem;
}

.peyk-home .toctree-wrapper li {
  margin: 0;
  padding: 0;
}

.peyk-home .toctree-wrapper > ul > li {
  margin: 0 0 0.75rem;
  break-inside: avoid;
}

.peyk-home .toctree-wrapper > ul > li > a {
  color: var(--color-foreground-primary);
  font-size: 1rem;
  font-weight: 600;
}

.peyk-home .toctree-wrapper ul ul {
  margin: 0.3rem 0 0.1rem 0.3rem;
  padding-left: 0.85rem;
  border-left: 2px solid var(--color-background-border);
}

.peyk-home .toctree-wrapper ul ul li {
  margin: 0 0 0.15rem;
}

.peyk-home .toctree-wrapper ul ul a {
  color: var(--color-foreground-secondary);
  font-size: 0.92rem;
}

.peyk-home .toctree-wrapper a {
  text-decoration: none;
}

.peyk-home .toctree-wrapper a:hover {
  color: var(--color-brand-primary);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}