/*
 * Copyright (c) 2026 ONERA
 * Authors: Susanne Claus
 * This file is part of CutFEMx
 *
 * SPDX-License-Identifier:    MIT
 */

/* CutFEMx documentation: restrained tutorial layout on top of PyData. */

:root {
  --cutfemx-blue: #1f5d8c;
  --cutfemx-blue-dark: #173f61;
  --cutfemx-border: #d8dee8;
  --cutfemx-muted: #5f6f82;
  --pst-font-size-base: 16px;
  --pst-font-size-h1: 2rem;
  --pst-font-size-h2: 1.45rem;
  --pst-font-size-h3: 1.2rem;
}

html[data-theme="light"] {
  --pst-color-primary: var(--cutfemx-blue);
  --pst-color-secondary: #2f7d55;
  --pst-color-link: var(--cutfemx-blue);
  --pst-color-link-hover: var(--cutfemx-blue-dark);
}

html[data-theme="dark"] {
  --pst-color-primary: #8bbfe8;
  --pst-color-link: #9dcced;
  --pst-color-link-hover: #c4e3f8;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.65;
}

code,
kbd,
pre,
.highlight {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* Keep the book/tutorial structure: left chapters, article, right page TOC. */
.bd-page {
  max-width: 1440px;
  margin: 0 auto;
}

.bd-main .bd-content .bd-article-container {
  max-width: 820px;
}

.bd-sidebar-primary {
  border-right: 1px solid var(--pst-color-border);
}

.bd-sidebar-primary .sidebar-primary-items__end {
  margin-top: 1rem;
}

.bd-sidebar-primary .pst-sidebar-collapse .pst-collapse-sidebar-label,
.bd-sidebar-primary .pst-sidebar-collapse .pst-expand-sidebar-label {
  display: none;
}

.bd-sidebar-primary .bd-links__title {
  color: var(--cutfemx-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}

.bd-sidebar-primary .caption {
  color: var(--cutfemx-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bd-sidebar-primary .toctree-l1 > a,
.bd-sidebar-primary .toctree-l2 > a {
  border-radius: 0;
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}

.bd-sidebar-primary .current > a,
.bd-sidebar-primary a.current {
  border-left: 3px solid var(--pst-color-primary);
  color: var(--pst-color-primary);
  font-weight: 600;
}

.bd-sidebar-secondary {
  font-size: 0.88rem;
}

.bd-sidebar-secondary .toc-entry a.nav-link {
  padding-top: 0.2rem;
  padding-bottom: 0.2rem;
}

.bd-header {
  border-bottom: 1px solid var(--pst-color-border);
  box-shadow: none;
}

.navbar-brand img {
  max-height: 36px;
}

.navbar-brand .title {
  font-weight: 600;
}

article.bd-article h1 {
  border-bottom: 1px solid var(--pst-color-border);
  margin-bottom: 1.2rem;
  padding-bottom: 0.35rem;
}

article.bd-article h2 {
  margin-top: 2.1rem;
}

article.bd-article h3 {
  margin-top: 1.5rem;
}

article.bd-article p {
  margin-bottom: 0.85rem;
}

article.bd-article ul,
article.bd-article ol {
  margin-bottom: 1rem;
}

.highlight,
div[class*="highlight-"] {
  border: 1px solid var(--pst-color-border);
  border-radius: 4px;
}

.highlight pre {
  font-size: 0.88rem;
  line-height: 1.55;
}

.admonition,
div.admonition {
  border-radius: 4px;
  box-shadow: none;
}

.admonition > .admonition-title::before,
.admonition > .admonition-title::after,
div.admonition > .admonition-title::before,
div.admonition > .admonition-title::after,
.admonition p.admonition-title::before,
.admonition p.admonition-title::after,
.admonition-title .fa,
.admonition-title .fas,
.admonition-title .far,
.admonition-title .fab,
.admonition-title .fa-solid,
.admonition-title svg {
  content: none !important;
  display: none !important;
}

.admonition.theory,
.admonition.formulation,
.admonition.practice,
.admonition.geometry {
  border: 1px solid var(--cutfemx-border);
  border-left-width: 5px;
  margin: 1.35rem 0;
}

.admonition.theory {
  background: color-mix(in srgb, var(--pst-color-primary) 8%, var(--pst-color-background));
  border-left-color: var(--pst-color-primary);
}

.admonition.formulation {
  background: color-mix(in srgb, #2f7d55 10%, var(--pst-color-background));
  border-left-color: #2f7d55;
}

.admonition.practice {
  background: color-mix(in srgb, #8a5a00 10%, var(--pst-color-background));
  border-left-color: #b7791f;
}

.admonition.geometry {
  background: color-mix(in srgb, #7a4ab0 10%, var(--pst-color-background));
  border-left-color: #7a4ab0;
}

.admonition.theory > .admonition-title,
.admonition.formulation > .admonition-title,
.admonition.practice > .admonition-title,
.admonition.geometry > .admonition-title {
  background: transparent;
  font-weight: 700;
}

.admonition.theory .math,
.admonition.formulation .math,
.admonition.practice .math,
.admonition.geometry .math {
  margin: 0.7rem 0;
}

table {
  font-size: 0.92rem;
}

/* Existing docs use this class for displayed formulations. */
.math-box {
  background: var(--pst-color-surface);
  border: 1px solid var(--cutfemx-border);
  border-left: 4px solid var(--pst-color-primary);
  border-radius: 4px;
  margin: 1.4rem 0;
  padding: 1rem 1.25rem;
}

.math-box h4 {
  color: var(--pst-color-heading-color);
  font-size: 1rem;
  margin: 0 0 0.75rem;
}

.math-box .math {
  margin-bottom: 0;
}

/* Root page should read like a tutorial entry point, not a marketing page. */
.bd-article-container .toctree-wrapper:empty {
  display: none;
}

.tutorial-figure {
  margin: 1.1rem 0 1.6rem;
}

.tutorial-frame {
  width: 100%;
  height: 520px;
  min-height: 520px;
  border: 1px solid var(--pst-color-border);
  border-radius: 6px;
  background: #f8fafc;
  box-shadow: 0 0.35rem 1.1rem rgba(15, 23, 42, 0.08);
  display: block;
}

.tutorial-image {
  width: 100%;
  border: 1px solid var(--pst-color-border);
  border-radius: 6px;
  background: #f8fafc;
  box-shadow: 0 0.35rem 1.1rem rgba(15, 23, 42, 0.08);
  display: block;
}

.tutorial-figure figcaption {
  color: var(--cutfemx-muted);
  font-size: 0.88rem;
  line-height: 1.45;
  margin-top: 0.45rem;
  text-align: left;
}

@media (max-width: 768px) {
  .tutorial-frame {
    height: 380px;
    min-height: 380px;
  }
}

@media (max-width: 960px) {
  .bd-main .bd-content .bd-article-container {
    max-width: 100%;
  }
}