/* ============================================================================
   pyRiemann Custom Styles
   Modern styling for Riemannian geometry documentation
   ============================================================================ */

/* ============================================================================
   Color Palette
   ============================================================================ */
:root {
    --pyriemann-blue: #2e5a8a;
    --pyriemann-gold: #d4a82c;
    --pyriemann-light-blue: #5a8abb;
    --pyriemann-teal: #16a085;
    --pyriemann-dark: #1e3a5c;
    --pyriemann-light: #ecf0f1;
    --success-green: #27ae60;
    --warning-orange: #e67e22;
}

/* ============================================================================
   Typography Enhancements
   ============================================================================ */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-top: 1.5em;
    margin-bottom: 0.75em;
}

h1 {
    font-size: 2.5rem !important;
    padding-bottom: 0.3em;
    border-bottom: 3px solid var(--pyriemann-gold);
}

h2 {
    font-size: 2rem !important;
    color: var(--pyriemann-blue);
    border-bottom: 2px solid var(--pyriemann-light);
    padding-bottom: 0.3em;
}

h3 {
    font-size: 1.5rem !important;
    color: var(--pyriemann-dark);
}

/* ============================================================================
   Code Blocks
   ============================================================================ */
code {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: "Consolas", "Monaco", "Courier New", monospace;
    font-size: 0.9em;
    border: 1px solid rgba(46, 90, 138, 0.1);
}

pre {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border: 1px solid var(--pyriemann-light);
    border-left: 4px solid var(--pyriemann-blue);
    border-radius: 8px;
    padding: 1.5em;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: box-shadow 0.3s ease;
}

pre:hover {
    box-shadow: 0 4px 16px rgba(46, 90, 138, 0.15);
}

pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
}

/* ============================================================================
   Links
   ============================================================================ */
a {
    color: var(--pyriemann-blue);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--pyriemann-dark);
}

a.reference.external::after {
    content: " \2197";
    font-size: 0.8em;
    opacity: 0.6;
}

/* ============================================================================
   Admonitions
   ============================================================================ */
.admonition {
    border-radius: 8px;
    padding: 1em 1.5em;
    margin: 1.5em 0;
    border-left: 4px solid;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.admonition:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.admonition.note {
    background: linear-gradient(135deg, #fdf8e8 0%, #fffdf5 100%);
    border-left-color: var(--pyriemann-gold);
}

.admonition.warning {
    background: linear-gradient(135deg, #fff3e0 0%, #fffaf5 100%);
    border-left-color: var(--warning-orange);
}

.admonition.tip {
    background: linear-gradient(135deg, #e8f5e9 0%, #f5fdf5 100%);
    border-left-color: var(--success-green);
}

.admonition-title {
    font-weight: 600;
    margin-bottom: 0.5em;
    font-size: 1.1em;
}

/* ============================================================================
   Tables
   ============================================================================ */
table {
    border-collapse: collapse;
    width: 100%;
    margin: 1.5em 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background: linear-gradient(135deg, var(--pyriemann-blue), var(--pyriemann-light-blue));
    color: #fff;
}

thead th {
    padding: 1em;
    text-align: left;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85em;
    letter-spacing: 0.05em;
}

tbody tr {
    border-bottom: 1px solid var(--pyriemann-light);
    transition: background-color 0.2s ease;
}

tbody tr:hover {
    background-color: rgba(46, 90, 138, 0.05);
}

tbody td {
    padding: 0.75em 1em;
}

tbody tr:nth-child(even) {
    background-color: #f8f9fa;
}

/* ============================================================================
   API Documentation
   ============================================================================ */
dl.class, dl.function, dl.method {
    border: 1px solid var(--pyriemann-light);
    border-radius: 8px;
    padding: 1.5em;
    margin: 1.5em 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

dt {
    font-weight: 600;
    color: var(--pyriemann-dark);
    padding: 0.5em 0;
}

dd {
    margin-left: 0;
    padding-left: 1.5em;
}

.sig-name {
    color: var(--pyriemann-blue);
    font-weight: 600;
}

.sig-param {
    color: var(--pyriemann-teal);
}

/* ============================================================================
   Gallery
   ============================================================================ */
.sphx-glr-thumbnails {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)) !important;
    gap: 16px;
}

.sphx-glr-thumbcontainer {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    background: white;
    width: 100% !important;
    max-width: none !important;
    float: none !important;
    margin: 0 !important;
}

/* Avoid oversized cards on sections that have a single example. */
.sphx-glr-thumbnails > .sphx-glr-thumbcontainer:only-child {
    justify-self: start;
    width: min(100%, 460px) !important;
}

.sphx-glr-thumbcontainer img {
    max-width: 100% !important;
    max-height: none !important;
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.sphx-glr-thumbcontainer:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(46, 90, 138, 0.2);
}

.sphx-glr-thumbcontainer:hover img {
    transform: scale(1.05);
}

/* ============================================================================
   Copy Button Enhancement
   ============================================================================ */
.copybtn {
    background: var(--pyriemann-blue);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.copybtn:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* ============================================================================
   Search Box
   ============================================================================ */
input[type="search"], input[type="text"] {
    border: 2px solid var(--pyriemann-light);
    border-radius: 6px;
    padding: 0.6em 1em;
    transition: all 0.3s ease;
}

input[type="search"]:focus, input[type="text"]:focus {
    border-color: var(--pyriemann-blue);
    outline: none;
    box-shadow: 0 0 0 3px rgba(46, 90, 138, 0.1);
}

/* ============================================================================
   Blockquotes
   ============================================================================ */
blockquote {
    border-left: 4px solid var(--pyriemann-gold);
    padding: 1em 1.5em;
    margin: 1.5em 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--pyriemann-dark);
}

/* ============================================================================
   Footer
   ============================================================================ */
footer {
    border-top: 2px solid var(--pyriemann-light);
    padding-top: 2em;
    margin-top: 3em;
    color: #6c757d;
}

/* ============================================================================
   Expand content when right TOC is hidden (API pages with :hide-toc:)
   ============================================================================ */
.page:has(.toc-drawer.no-toc) .content {
    width: 100%;
    max-width: 70em;
}

/* Use full width on gallery index pages so thumbnail grids can expand. */
.page:has(.toc-drawer.no-toc) .content:has(.sphx-glr-thumbnails) {
    max-width: none;
}

/* ============================================================================
   Responsive Design
   ============================================================================ */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem !important;
    }

    h2 {
        font-size: 1.5rem !important;
    }

    pre {
        padding: 1em;
    }

    table {
        font-size: 0.9em;
    }
}

/* ============================================================================
   Print Styles
   ============================================================================ */
@media print {
    .sidebar, .related, .footer {
        display: none;
    }

    body {
        color: black;
    }

    a {
        color: black;
        text-decoration: underline;
    }
}

/* ============================================================================
   Accessibility
   ============================================================================ */
:focus {
    outline: 3px solid var(--pyriemann-gold);
    outline-offset: 2px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================================================
   Smooth Scrolling
   ============================================================================ */
html {
    scroll-behavior: smooth;
}

/* ============================================================================
   API Card Navigation Grid
   ============================================================================ */
.api-section-header {
    margin: 2em 0 1em;
    padding: 0 0 0.5em;
    border-bottom: 2px solid var(--pyriemann-light);
}

.api-section-header h2 {
    margin: 0 0 0.25em;
    font-size: 1.6rem !important;
    border-bottom: none;
    padding-bottom: 0;
}

.api-section-header p {
    margin: 0;
    color: #6c757d;
    font-size: 0.95rem;
    line-height: 1.5;
}

.api-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin: 1.25rem 0 2rem;
}

.api-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--pyriemann-light);
    border-radius: 10px;
    padding: 1.25rem;
    background: #fff;
    text-decoration: none !important;
    color: inherit !important;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
    cursor: pointer;
}

.api-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.api-card:focus {
    outline: 3px solid var(--pyriemann-gold);
    outline-offset: 2px;
}

.api-card.card-module:hover {
    border-color: var(--pyriemann-blue);
}

.api-card.card-utils:hover {
    border-color: var(--pyriemann-teal);
}

.api-card.card-geometry:hover {
    border-color: var(--pyriemann-gold);
}

.api-card-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.75rem;
}

.api-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.api-card-icon svg {
    width: 20px;
    height: 20px;
}

.card-module .api-card-icon {
    background: rgba(46, 90, 138, 0.12);
    color: var(--pyriemann-blue);
}

.card-module .api-card-icon svg {
    fill: var(--pyriemann-blue);
    stroke: var(--pyriemann-blue);
}

.card-utils .api-card-icon {
    background: rgba(22, 160, 133, 0.12);
    color: var(--pyriemann-teal);
}

.card-utils .api-card-icon svg {
    fill: var(--pyriemann-teal);
    stroke: var(--pyriemann-teal);
}

.card-geometry .api-card-icon {
    background: rgba(212, 168, 44, 0.14);
    color: var(--pyriemann-gold);
}

.card-geometry .api-card-icon svg {
    fill: var(--pyriemann-gold);
    stroke: var(--pyriemann-gold);
}

.api-card-tag {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.15em 0.55em;
    border-radius: 4px;
}

.tag-module {
    background: rgba(46, 90, 138, 0.12);
    color: var(--pyriemann-blue);
}

.tag-utils {
    background: rgba(22, 160, 133, 0.12);
    color: var(--pyriemann-teal);
}

.tag-geometry {
    background: rgba(212, 168, 44, 0.16);
    color: #a07c1a;
}

.api-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0 0 0.35rem;
    color: var(--pyriemann-dark);
    line-height: 1.3;
}

.api-card a:hover .api-card-title,
.api-card:hover .api-card-title {
    color: var(--pyriemann-blue);
}

.card-utils:hover .api-card-title {
    color: var(--pyriemann-teal);
}

.card-geometry:hover .api-card-title {
    color: var(--pyriemann-gold);
}

.api-card-desc {
    font-size: 0.83rem;
    color: #6c757d;
    margin: 0 0 0.75rem;
    line-height: 1.45;
    flex-grow: 1;
}

.api-card-footer {
    font-size: 0.75rem;
    color: #95a5a6;
    font-weight: 500;
    border-top: 1px solid var(--pyriemann-light);
    padding-top: 0.6rem;
    margin-top: auto;
}

/* ---- Dark Mode ---- */
[data-theme="dark"] .api-card {
    background: #1e1e1e;
    border-color: #333;
}

[data-theme="dark"] .api-card:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .api-card.card-module:hover {
    border-color: var(--pyriemann-gold);
}

[data-theme="dark"] .api-card.card-utils:hover {
    border-color: var(--pyriemann-teal);
}

[data-theme="dark"] .api-card.card-geometry:hover {
    border-color: var(--pyriemann-gold);
}

[data-theme="dark"] .tag-geometry {
    background: rgba(212, 168, 44, 0.2);
    color: var(--pyriemann-gold);
}

[data-theme="dark"] .api-card-title {
    color: #e0e0e0;
}

[data-theme="dark"] .api-card-desc {
    color: #999;
}

[data-theme="dark"] .api-card-footer {
    color: #777;
    border-top-color: #333;
}

[data-theme="dark"] .api-section-header {
    border-bottom-color: #333;
}

[data-theme="dark"] .api-section-header p {
    color: #999;
}

/* When a card grid contains a single card (e.g. the lone Visualization
   card under Utility Functions), constrain the grid to a single sized
   column so the card doesn't sit orphaned in a 3-column layout. */
.api-card-grid:has(> a.api-card:only-child) {
    grid-template-columns: minmax(280px, 360px);
    justify-content: start;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .api-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .api-card-grid {
        grid-template-columns: 1fr;
    }
}