/* Beautiful Unity - Modern Sunset Theme for DocFX */

/* -------------------------------------------------------------
   Brand Variables & Sunset Gradient System
   ------------------------------------------------------------- */
:root {
    --bu-yellow: #ffd166;
    --bu-pink: #ff5d8f;
    --bu-blue: #4895ef;
    --bu-purple: #7209b7;

    --bu-sunset: linear-gradient(135deg, #ffd166 0%, #ff5d8f 50%, #4895ef 100%);
    --bu-sunset-h: linear-gradient(90deg, #ffd166 0%, #ff5d8f 50%, #4895ef 100%);
    --bu-sunset-soft: linear-gradient(135deg, rgba(255, 209, 102, 0.12) 0%, rgba(255, 93, 143, 0.12) 50%, rgba(72, 149, 239, 0.12) 100%);
    --bu-sunset-border: linear-gradient(90deg, rgba(255, 209, 102, 0.4), rgba(255, 93, 143, 0.4), rgba(72, 149, 239, 0.4));

    --bu-font-title: 'Obelix Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --bu-font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    --bs-primary: #ff5d8f;
    --bs-secondary: #4895ef;
    --bs-border-radius: 14px;
    --bs-border-radius-sm: 8px;
    --bs-border-radius-lg: 20px;
}

/* -------------------------------------------------------------
   Light Theme Styling
   ------------------------------------------------------------- */
[data-bs-theme="light"], :root {
    --bs-body-bg: #fafafc;
    --bs-body-color: #1a1d24;
    --bs-tertiary-bg: #f1f3f7;
    --bs-secondary-bg: #ffffff;
    --bs-border-color: rgba(0, 0, 0, 0.08);

    --bu-navbar-bg: rgba(250, 250, 252, 0.92);
    --bu-card-bg: #ffffff;
    --bu-card-border: rgba(0, 0, 0, 0.07);
    --bu-card-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
    --bu-code-bg: #1e222d;
    --bu-code-color: #f8fafc;
    --bu-link-color: #e6396e;
    --bu-link-hover: #3a86ff;
}

/* -------------------------------------------------------------
   Dark Theme Styling (Fixes White-on-White Bug)
   ------------------------------------------------------------- */
[data-bs-theme="dark"] {
    --bs-body-bg: #0d0f14;
    --bs-body-color: #e2e8f0;
    --bs-tertiary-bg: #151821;
    --bs-secondary-bg: #1a1e29;
    --bs-border-color: rgba(255, 255, 255, 0.08);

    --bu-navbar-bg: rgba(13, 15, 20, 0.92);
    --bu-card-bg: #141720;
    --bu-card-border: rgba(255, 255, 255, 0.08);
    --bu-card-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    --bu-code-bg: #090a0f;
    --bu-code-color: #f1f5f9;
    --bu-link-color: #ff759f;
    --bu-link-hover: #60a5fa;
}

/* -------------------------------------------------------------
   Global Typography & Headings Hierarchy (#, ##, ###, ####)
   ------------------------------------------------------------- */
body {
    font-family: var(--bu-font-body);
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    letter-spacing: -0.01em;
    transition: background-color 0.25s ease, color 0.25s ease;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--bs-body-color);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Main Page Title (#) */
h1 {
    font-family: var(--bu-font-title);
    font-size: 2.2rem;
    margin-bottom: 1.25rem;
    position: relative;
    display: inline-block;
}

/* Sunset Accent for Main Article Titles */
article h1 {
    background: var(--bu-sunset-h);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

/* Major Section Header (##) */
h2 {
    font-size: 1.55rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--bs-border-color);
    padding-bottom: 0.45rem;
    font-weight: 700;
}

/* Sub-Section / Attribute Header (###) */
h3 {
    font-size: 1.22rem;
    margin-top: 1.85rem;
    margin-bottom: 0.75rem;
    font-weight: 650;
}

/* Sub-Detail Header (####) */
h4 {
    font-size: 1.05rem;
    margin-top: 1.35rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

h5 {
    font-size: 0.95rem;
    margin-top: 1rem;
    margin-bottom: 0.4rem;
}

h6 {
    font-size: 0.85rem;
}

/* -------------------------------------------------------------
   Header & Navbar (Frosted Glass + Sunset Accent)
   ------------------------------------------------------------- */
.navbar {
    background-color: var(--bu-navbar-bg) !important;
    backdrop-filter: blur(14px) saturate(160%);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    border-bottom: 1px solid var(--bs-border-color);
    position: relative;
    transition: all 0.25s ease;
}

/* Sleek bottom gradient hairline on header */
.navbar::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--bu-sunset-h);
    opacity: 0.85;
}

.navbar-brand {
    font-family: var(--bu-font-title);
    font-weight: 800;
    letter-spacing: 0.02em;
    background: var(--bu-sunset-h);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.35rem;
    transition: transform 0.2s ease;
}

.navbar-brand:hover {
    transform: scale(1.02);
}

/* Fix Logo Icon in Light & Dark Mode */
[data-bs-theme="light"] #logo, 
[data-bs-theme="light"] .navbar-brand img {
    filter: brightness(0) !important;
}

[data-bs-theme="dark"] #logo, 
[data-bs-theme="dark"] .navbar-brand img {
    filter: brightness(0) invert(1) !important;
}

/* Fix Navbar Collapse / Three-dots Button (Remove unwanted gradient pill) */
.navbar-toggler, 
.btn.d-md-none,
button[data-bs-toggle="collapse"],
.navbar button.btn {
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    color: var(--bs-body-color) !important;
    padding: 0.35rem 0.65rem !important;
    border-radius: 8px !important;
    font-size: 1.25rem !important;
}

.navbar-toggler:hover,
.btn.d-md-none:hover {
    background: var(--bu-sunset-soft) !important;
    color: var(--bu-pink) !important;
}

@media (min-width: 768px) {
    .d-md-none {
        display: none !important;
    }
}

.navbar .nav-link {
    font-weight: 500;
    color: var(--bs-body-color) !important;
    border-radius: 10px;
    padding: 0.45rem 0.85rem !important;
    margin: 0 0.15rem;
    transition: all 0.2s ease;
}

.navbar .nav-link:hover, .navbar .nav-link.active {
    background: var(--bu-sunset-soft);
    color: var(--bu-link-color) !important;
}

/* -------------------------------------------------------------
   Links & Action Buttons
   ------------------------------------------------------------- */
a {
    color: var(--bu-link-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease, transform 0.2s ease;
}

a:hover {
    color: var(--bu-link-hover);
}

/* Primary Action Buttons (Exclude navbar buttons) */
a.btn-primary, 
.btn-primary, 
.bu-hero .btn {
    background: var(--bu-sunset-h) !important;
    border: none !important;
    color: #ffffff !important;
    font-weight: 600;
    border-radius: 30px;
    padding: 0.6rem 1.6rem;
    box-shadow: 0 4px 15px rgba(255, 93, 143, 0.35);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none !important;
    transition: all 0.25s ease;
}

/* Remove awkward external link arrow from buttons */
.btn::after, .btn-primary::after, a.btn::after {
    display: none !important;
    content: none !important;
}

a.btn-primary:hover, 
.btn-primary:hover, 
.bu-hero .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(72, 149, 239, 0.4);
    color: #ffffff !important;
}

/* -------------------------------------------------------------
   Search Box & Magnifying Glass Fix
   ------------------------------------------------------------- */
.search {
    position: relative;
    display: flex;
    align-items: center;
}

.search .bi-search {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    pointer-events: none;
    opacity: 0.6;
    color: var(--bs-body-color);
}

.search input#search-query, 
.form-control, 
.search-input {
    background-color: var(--bs-tertiary-bg) !important;
    border: 1px solid var(--bs-border-color) !important;
    color: var(--bs-body-color) !important;
    border-radius: 25px !important;
    padding: 0.45rem 1rem 0.45rem 2.35rem !important; /* Ample left padding to clear search icon */
    transition: all 0.2s ease;
}

.search input#search-query:focus,
.form-control:focus, 
.search-input:focus {
    border-color: var(--bu-pink) !important;
    box-shadow: 0 0 0 3px rgba(255, 93, 143, 0.25) !important;
}

/* -------------------------------------------------------------
   Cards, Callouts & Modern Containers
   ------------------------------------------------------------- */
.card {
    background-color: var(--bu-card-bg) !important;
    border: 1px solid var(--bu-card-border) !important;
    border-radius: 18px !important;
    box-shadow: var(--bu-card-shadow) !important;
    backdrop-filter: blur(8px);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 93, 143, 0.4) !important;
}

/* Alerts / Callouts */
.alert, .alert-info, .alert-warning {
    border-radius: 16px !important;
    border: 1px solid var(--bs-border-color) !important;
    border-left: 5px solid var(--bu-pink) !important;
    background: var(--bu-sunset-soft) !important;
    color: var(--bs-body-color) !important;
    backdrop-filter: blur(6px);
}

/* -------------------------------------------------------------
   Code Blocks & Syntax Styling
   ------------------------------------------------------------- */
pre {
    background-color: var(--bu-code-bg) !important;
    color: var(--bu-code-color) !important;
    border-radius: 14px !important;
    border: 1px solid var(--bs-border-color) !important;
    padding: 1rem 1.25rem !important;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15) !important;
}

code:not(pre code) {
    background: var(--bu-sunset-soft) !important;
    color: var(--bu-link-color) !important;
    padding: 0.2rem 0.45rem;
    border-radius: 6px;
    font-size: 0.88em;
    font-weight: 600;
}

/* -------------------------------------------------------------
   Sidebar, Table of Contents & Navigation
   ------------------------------------------------------------- */
.toc .nav > li > a {
    color: var(--bs-body-color) !important;
    border-radius: 8px;
    padding: 0.35rem 0.75rem;
    font-size: 0.9rem;
    transition: all 0.15s ease;
}

.toc .nav > li > a:hover {
    background: var(--bu-sunset-soft);
    color: var(--bu-link-color) !important;
}

.toc .nav > li.active > a {
    background: var(--bu-sunset-soft);
    color: var(--bu-link-color) !important;
    font-weight: 700;
    border-left: 3px solid var(--bu-pink);
}

/* -------------------------------------------------------------
   Tables
   ------------------------------------------------------------- */
.table {
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--bs-border-color);
    background-color: var(--bu-card-bg);
    margin: 1.5rem 0;
}

.table th {
    background: var(--bu-sunset-soft) !important;
    color: var(--bs-body-color);
    font-weight: 700;
}

/* -------------------------------------------------------------
   Custom Hero Showcase & Centered Grid Styles
   ------------------------------------------------------------- */
.bu-hero {
    text-align: center;
    padding: 3.5rem 1.5rem 2rem;
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.bu-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bu-sunset-soft);
    border: 1px solid rgba(255, 93, 143, 0.35);
    color: var(--bu-link-color);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.35rem 1rem;
    border-radius: 30px;
    margin-bottom: 1.25rem;
}

.bu-hero-title {
    font-family: var(--bu-font-title);
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    background: var(--bu-sunset);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.bu-hero-sub {
    font-size: 1.15rem;
    max-width: 640px;
    margin: 0 auto 2rem;
    color: var(--bs-body-color);
    opacity: 0.85;
    line-height: 1.6;
}

/* Centered 2-Column Responsive Card Grid */
.bu-grid-container {
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 2rem 0 3rem;
}

.bu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    max-width: 880px;
    width: 100%;
    gap: 1.5rem;
    margin: 0 auto;
}

.bu-card {
    background: var(--bu-card-bg);
    border: 1px solid var(--bu-card-border);
    border-radius: 20px;
    padding: 1.75rem;
    text-align: left;
    box-shadow: var(--bu-card-shadow);
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.bu-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 93, 143, 0.45);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.08);
}

.bu-card-title {
    font-family: var(--bu-font-title);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: var(--bs-body-color);
}

.bu-card-desc {
    font-size: 0.95rem;
    opacity: 0.85;
    line-height: 1.55;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.bu-card-link {
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--bu-link-color);
}

.bu-card-link:hover {
    gap: 0.6rem;
    color: var(--bu-link-hover);
}