:root {
    /* --- BRAND COLORS --- */
    /* Primary brand color - affects interactive links, buttons, active menu states, featured card borders & pagination. */
    --color-primary: #000d72;
    /* Hover state for primary-colored elements. */
    --color-primary-hover: #528bbc;
    /* Primary color in RGB format, used for opacity overlays (e.g. card hover shadows). */
    --color-primary-rgb: 37, 99, 235;
    
    /* Secondary brand color - affects H1-H6 headings, menu text, blockquote accents, footer backgrounds & table headers. */
    --color-secondary: #0f172a;
    /* Hover state for secondary-colored elements (e.g. menu links). */
    --color-secondary-hover: #1e293b;
    
    /* --- PAGE ELEMENT COLORS --- */
    /* Background color of the main body page. */
    --color-bg-body: #f8fafc;
    /* Main body paragraph text color. */
    --color-text-main: #1e293b;
    /* Muted text color for dates, blog post snippets, and placeholder text. */
    --color-text-muted: #1b3e5c;
    /* Light text color for copyright footer text, sub-metadata, and icons. */
    --color-text-light: #94a3b8;
    
    /* Default border outlines for inputs, cards, tables, and pagination containers. */
    --color-border: #e2e8f0;
    /* Border color when focused or hovered. */
    --color-border-hover: #cbd5e1;
    
    /* --- CODE BLOCKS --- */
    /* Background fill color for inline and multi-line code blocks. */
    --color-code-bg: #f1f5f9;
    /* Text color for code text elements. */
    --color-code-text: #0f172a;
    
    /* --- CARD COMPONENT --- */
    /* Background fill color for individual card blocks. */
    --color-bg-card: #ffffff;
    /* Heading text color inside card components. */
    --color-card-title: #0f2d73;
    /* Body text color inside card components. */
    --color-card-text: #112c51;
    
    /* --- TYPOGRAPHY FAMILIES --- */
    /* Font stack for body paragraph copy. */
    --font-family-body: 'Noto Sans', sans-serif;
    /* Font stack for page and component headings. */
    --font-family-headers: 'Roboto Slab', var(--font-family-body);
    /* Font stack for blockquote elements. */
    --font-family-quotes: 'Noto Serif', serif;
    /* Font stack for display and feature headings. */
    --font-family-display: 'Outfit', sans-serif;
    /* Font stack for code blocks and monospace elements. */
    --font-family-code: 'Jetbrains Mono', monospace;

    /* --- TYPOGRAPHY SIZES --- */
    /* Base/normal body text size. */
    --font-size-base: 1.08rem;
    /* Font size for H1 headings in article content. */
    --font-size-h1: 2.25rem;
    /* Font size for H2 headings in article content. */
    --font-size-h2: 1.625rem;
    /* Font size for H3 headings in article content. */
    --font-size-h3: 1.25rem;
    /* Font size for H4 headings in article content. */
    --font-size-h4: 1.1rem;
    /* Font size for H5 headings (default size). */
    --font-size-h5: 1rem;
    /* Font size for H6 headings (default size). */
    --font-size-h6: 0.875rem;

    /* Additional typography layout sizes. */
    /* Font size for the main page-title H1. */
    --font-size-page-title: 2.5rem;
    /* Heading text size inside card components. */
    --font-size-card-title: 1.25rem;
    /* Body text size inside card components. */
    --font-size-card-text: 1rem;
    
    /* --- LAYOUT CONFIGURATION --- */
    /* Maximum width of main body article prose (keeps line lengths readable). */
    --max-width-content: 940px;
    /* Initial height of the sticky navigation header on desktop. */
    --header-height: 150px;
    /* Height of the sticky navigation header on desktop after scrolling down. */
    --header-height-scrolled: 70px;
    /* Primary border radius for standard cards, inputs, and image blocks. */
    --border-radius: 12px;
    /* Smaller border radius for buttons and tags. */
    --border-radius-sm: 6px;
    
    /* --- CUSTOM HEADER ASSETS --- */
    /* CSS background-image for header container. Leave 'none' for plain color. */
    --header-bg-image: none;
    /* CSS background-color for header container in its expanded state. */
    --header-bg-color: #d0dfed;
    /* CSS background-color for header container when scrolled/collapsed. */
    --header-bg-color-scrolled: white;
    /* Color of header menu links (desktop only) in default state. */
    --header-nav-link-color: #082f4d; /*var(--color-text-muted);*/
    /* Color of header menu links (desktop only) when hovered/active. */
    --header-nav-link-hover-color: var(--color-primary);
    /* Background color of header menu links (desktop only) when hovered/active. */
    --header-nav-link-hover-bg: #93c1ec;
    /* Color of the mobile navigation hamburger toggle button. */
    --header-nav-toggle-color: var(--color-secondary);
    /* Color of the header logo text. */
    --header-logo-text-color: var(--color-secondary);
    /* CSS background-color for mobile navigation menu drawer. */
    --mobile-nav-bg-color: var(--color-bg-card);
    /* Color of menu links inside the mobile drawer. */
    --mobile-nav-link-color: var(--color-text-muted);
    /* Color of menu links inside the mobile drawer when hovered/active. */
    --mobile-nav-link-hover-color: var(--color-primary);
    /* Custom logo image path (e.g. url('../img/logo.png')). Default uses title text. */
    --logo-image: url('../img/webdev.png');
    /* Target height of the logo image. */
    --logo-height: 100px;
    /* Maximum width of the logo image to prevent header layout breakage. */
    --logo-max-width: 250px;
    /* Toggle visibility of logo image (e.g. block or none). */
    --logo-icon-display: block;
    /* Toggle visibility of logo text (e.g. block or none). */
    --logo-text-display: block;
    /* Set to 1 to enable the logo hover animation (rotation/scale), or 0 to disable it. */
    --logo-hover-animation-enabled: 1;
    
    /* --- SHADOWS & TRANSITIONS --- */
    /* Soft border shadow for small items (inputs, cards). */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    /* Soft hover shadow for standard card components. */
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* --- FOOTER THEMES CONFIGURATION --- */
    
    /* --- Dark Theme --- */
    /* Background color for the dark footer. */
    --footer-dark-bg: #0f172a;
    /* Main body and copyright text color for the dark footer. */
    --footer-dark-text: #94a3b8;
    /* Link text color for flat & list links in the dark footer. */
    --footer-dark-link: #94a3b8;
    /* Link text hover color in the dark footer. */
    --footer-dark-link-hover: #ffffff;
    /* Column header text color in the dark footer. */
    --footer-dark-header: #ffffff;
    /* Column header hover text color in the dark footer. */
    --footer-dark-header-hover: #2563eb;
    /* Top border line color for the dark footer. */
    --footer-dark-border: rgba(255, 255, 255, 0.05);

    /* --- Light Theme --- */
    /* Background color for the light footer. */
    --footer-light-bg: #ffffff;
    /* Main body and copyright text color for the light footer. */
    --footer-light-text: #64748b;
    /* Link text color for flat & list links in the light footer. */
    --footer-light-link: #64748b;
    /* Link text hover color in the light footer. */
    --footer-light-link-hover: #0f172a;
    /* Column header text color in the light footer. */
    --footer-light-header: #0f172a;
    /* Column header hover text color in the light footer. */
    --footer-light-header-hover: #2563eb;
    /* Top border line color for the light footer. */
    --footer-light-border: #e2e8f0;

    /* --- Primary Theme --- */
    /* Background color for the primary theme footer. */
    --footer-primary-bg: #2563eb;
    /* Main body and copyright text color for the primary theme footer. */
    --footer-primary-text: rgba(255, 255, 255, 0.85);
    /* Link text color for flat & list links in the primary theme footer. */
    --footer-primary-link: rgba(255, 255, 255, 0.85);
    /* Link text hover color in the primary theme footer. */
    --footer-primary-link-hover: #ffffff;
    /* Column header text color in the primary theme footer. */
    --footer-primary-header: #ffffff;
    /* Column header hover text color in the primary theme footer. */
    --footer-primary-header-hover: rgba(255, 255, 255, 0.90);
    /* Top border line color for the primary theme footer. */
    --footer-primary-border: #1d4ed8;

    /* --- SLIDER COMPONENT --- */
    /* Maximum width of the slider component. */
    --slider-max-width: 100%;
    /* Background color of slider navigation arrows. */
    --slider-nav-bg: rgba(0, 0, 0, 0.5);
    /* Background color of slider navigation arrows on hover. */
    --slider-nav-bg-hover: rgba(0, 0, 0, 0.8);
    /* Text/icon color of slider navigation arrows. */
    --slider-nav-color: #ffffff;
    /* Padding size inside navigation arrows. */
    --slider-nav-padding: 10px 15px;
    /* Border radius of navigation arrows. */
    --slider-nav-border-radius: 3px;
    /* Transition animation configuration for slide sliding mechanics. */
    --slider-transition: transform 1s ease-in-out;
    /* Transition animation configuration for fade mechanics. */
    --slider-fade-transition: opacity 2s ease-in-out;
}

/* -------------------------------------------------------------
   Base Resets
   ------------------------------------------------------------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family-body);
    background-color: var(--color-bg-body);
    color: var(--color-text-main);
    line-height: 1.625;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* -------------------------------------------------------------
   Layout Structure
   ------------------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    --curr-header-height: var(--header-height);
    height: var(--curr-header-height);
    background-color: var(--header-bg-color, rgba(255, 255, 255, 0.85));
    background-image: var(--header-bg-image, none);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: background-color var(--transition-normal), height var(--transition-normal), box-shadow var(--transition-normal), background-image var(--transition-normal);
}

.site-header.scrolled {
    --curr-header-height: var(--header-height-scrolled);
    height: var(--curr-header-height);
    background-color: var(--header-bg-color-scrolled, rgba(255, 255, 255, 0.95));
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 12px;
}

.logo-icon {
    display: var(--logo-icon-display, block);
    height: var(--logo-height, 38px);
    width: auto;
    max-height: calc(var(--curr-header-height, var(--header-height)) - 16px);
    max-width: var(--logo-max-width, 250px);
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), max-height var(--transition-normal), height var(--transition-normal);
    content: var(--logo-image, none);
}

.header-logo a:hover .logo-icon {
    transform: rotate(calc(5deg * var(--logo-hover-animation-enabled, 1))) scale(calc(1 + 0.05 * var(--logo-hover-animation-enabled, 1)));
}

.logo-text {
    display: var(--logo-text-display, block);
    font-family: var(--font-family-headers);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--header-logo-text-color, var(--color-secondary));
    letter-spacing: -0.02em;
}

.site-main {
    flex-grow: 1;
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 80px;
}

.content-container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: 0 24px;
}

.page-title {
    font-family: var(--font-family-headers);
    font-size: var(--font-size-page-title, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-secondary);
    margin-bottom: 32px;
    line-height: 1.15;
}

/* -------------------------------------------------------------
   Multi-Level Navigation (CSS Tree dropdowns)
   ------------------------------------------------------------- */
.header-nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-menu > li {
    position: relative;
    padding: 10px 0;
}

.nav-menu a {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--header-nav-link-color, var(--color-text-muted));
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    gap: 6px;
}

.nav-menu a:hover,
.nav-menu li.active > a,
.nav-menu li.active-parent > a {
    color: var(--header-nav-link-hover-color, var(--color-primary));
    background-color: var(--header-nav-link-hover-bg, rgba(37, 99, 235, 0.06));
}

/* Submenu Dropdown Caret */
.dropdown-arrow {
    position: relative;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    margin-left: 2px;
    transition: transform var(--transition-fast);
}

/* Dropdown Menu positioning */
.nav-submenu {
    position: absolute;
    top: 100%;
    left: 0;
    list-style: none;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: 1100;
}

.nav-submenu li {
    position: relative;
}

.nav-submenu a {
    display: block;
    padding: 10px 18px;
    font-size: 0.875rem;
    color: var(--color-text-main);
    border-radius: 0;
}

.nav-submenu a:hover {
    background-color: var(--color-code-bg);
    color: var(--color-primary);
}

.nav-submenu li.active > a {
    background-color: rgba(37, 99, 235, 0.05);
    color: var(--color-primary);
    font-weight: 600;
}

/* Hover effects for Desktop Dropdowns */
@media (min-width: 992px) {
    .nav-menu li.has-children:hover > .nav-submenu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-menu li.has-children:hover > a .dropdown-arrow {
        transform: rotate(180deg);
    }
}

/* Mobile Toggle Switch */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1200;
}

.hamburger {
    display: block;
    position: relative;
    width: 20px;
    height: 2px;
    background-color: var(--header-nav-toggle-color, var(--color-secondary));
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 20px;
    height: 2px;
    background-color: var(--header-nav-toggle-color, var(--color-secondary));
    transition: transform var(--transition-fast), top var(--transition-fast), bottom var(--transition-fast);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    bottom: -6px;
}

.nav-toggle.open .hamburger {
    background-color: transparent;
}

.nav-toggle.open .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.open .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* -------------------------------------------------------------
   Responsive Mobile Menu
   ------------------------------------------------------------- */
@media (max-width: 991px) {
    .nav-toggle {
        display: block;
    }
    
    .header-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        height: calc(100vh - var(--header-height));
        background-color: var(--mobile-nav-bg-color, var(--color-bg-card));
        padding: 40px 24px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
        z-index: 999;
        display: block;
        overflow-y: auto;
    }
    
    .site-header.scrolled + .site-main {
        padding-top: calc(70px + 40px);
    }
    
    .header-nav.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-menu {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }
    
    .nav-menu > li {
        padding: 0;
    }
    
    .nav-menu a {
        padding: 12px 16px;
        font-size: 1.125rem;
        justify-content: space-between;
        color: var(--mobile-nav-link-color, var(--color-text-muted));
    }
    
    .nav-menu a:hover,
    .nav-menu li.active > a,
    .nav-menu li.active-parent > a {
        color: var(--mobile-nav-link-hover-color, var(--color-primary));
        background-color: var(--header-nav-link-hover-bg, rgba(37, 99, 235, 0.06));
    }
    
    .nav-submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 4px 0 4px 16px;
        background-color: transparent;
        display: block; /* Always expanded on mobile */
    }
    
    .nav-submenu .nav-submenu {
        display: none; /* Limit mobile menu to 2 levels (hide 3rd level and deeper) */
    }
    
    .dropdown-arrow {
        display: none; /* Hide toggle caret on mobile */
    }
}

/* -------------------------------------------------------------
   Prose (Markdown Body Elements) Styling
   ------------------------------------------------------------- */
.prose {
    font-size: var(--font-size-base, 1.0625rem);
    color: var(--color-text-main);
}

.prose > * + * {
    margin-top: 1.5rem;
}

/* Headings */
.prose h1,
.prose h2,
.prose h3,
.prose h4 {
    font-family: var(--font-family-headers);
    color: var(--color-secondary);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.prose h1 { font-size: var(--font-size-h1, 2.25rem); margin-top: 2.5rem; }
.prose h2 { font-size: var(--font-size-h2, 1.625rem); margin-top: 2.25rem; }
.prose h3 { font-size: var(--font-size-h3, 1.25rem); margin-top: 1.75rem; }
.prose h4 { font-size: var(--font-size-h4, 1.1rem); margin-top: 1.5rem; }

/* Lists */
.prose ul,
.prose ol {
    padding-left: 26px;
}

.prose li {
    margin-bottom: 0.5rem;
}

.prose li::marker {
    color: var(--color-primary);
}

.prose ul li {
    list-style-type: disc;
}

/* Typography elements */
.prose p {
    margin-bottom: 1.5rem;
}

.prose a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px dashed rgba(37, 99, 235, 0.4);
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.prose a:hover {
    color: var(--color-primary-hover);
    border-bottom-style: solid;
    border-bottom-color: var(--color-primary-hover);
}

.prose strong {
    color: var(--color-secondary);
    font-weight: 600;
}

/* Blockquotes */
.prose blockquote {
    padding: 18px 24px;
    background-color: var(--color-code-bg);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    font-family: var(--font-family-quotes);
    font-style: italic;
    color: var(--color-text-muted);
}

.prose blockquote p {
    margin-bottom: 0;
}

/* Tables */
.prose table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    margin-bottom: 2rem;
    font-size: 0.9375rem;
    text-align: left;
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.prose th,
.prose td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
}

.prose th {
    background-color: var(--color-secondary);
    color: #ffffff;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.prose tr:last-child td {
    border-bottom: none;
}

.prose tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.6);
}

/* Code & Pre */
.prose code {
    font-family: var(--font-family-code);
    font-size: 0.85em;
    background-color: var(--color-code-bg);
    color: var(--color-code-text);
    padding: 3px 6px;
    border-radius: 4px;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.prose pre {
    background-color: var(--color-secondary);
    color: #f8fafc;
    padding: 20px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    border: 1px solid var(--color-border);
    margin-top: 1.5rem;
}

.prose pre code {
    background-color: transparent;
    color: inherit;
    padding: 0;
    font-size: 0.875rem;
    border: none;
}

/* Horizontal Rule */
.prose hr {
    border: 0;
    height: 1px;
    background: var(--color-border);
    margin: 3rem 0;
}

/* Images & Alignments */
.prose img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    display: block;
    margin: 1.5rem 0;
}

.prose .img-left {
    float: left;
    margin: 0.5rem 1.5rem 1.5rem 0;
    max-width: 40%;
}

.prose .img-right {
    float: right;
    margin: 0.5rem 0 1.5rem 1.5rem;
    max-width: 40%;
}

.prose .img-center {
    margin-left: auto;
    margin-right: auto;
}

.prose img[style*="--img-width"] {
    width: var(--img-width);
    max-width: 100%;
}

/* Clearfix for floated images */
.prose::after {
    content: "";
    clear: both;
    display: table;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    text-decoration: none !important;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff !important;
    border-bottom: none !important;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: #ffffff !important;
    border-bottom: none !important;
}

.btn-secondary:hover {
    background-color: var(--color-secondary-hover);
}

/* -------------------------------------------------------------
   Global Form Elements & Formatting
   ------------------------------------------------------------- */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="search"],
textarea,
select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family-body);
    font-size: 0.9375rem;
    background-color: var(--color-bg-body);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.form-vertical {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Alert notifications */
.alert-danger,
.contact-error-alert,
.newsletter-error-alert {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fca5a5;
    padding: 16px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 24px;
    font-weight: 500;
}

.newsletter-error-alert {
    padding: 12px 16px;
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* Success Card */
.card-success,
.contact-success-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 40px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-md);
    margin: 2rem 0;
}

.card-success h2,
.contact-success-card h2 {
    font-family: var(--font-family-display);
    color: var(--color-primary);
    font-size: 2rem;
    margin-bottom: 12px;
}

.card-success p,
.contact-success-card p {
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

/* -------------------------------------------------------------
   Reusable Themes
   ------------------------------------------------------------- */

/* Theme: Dark (formerly CTA module style) */
.module.theme-dark,
.card.theme-dark,
.cta-module {
    background: linear-gradient(135deg, #1e3a8a 0%, #0f172a 100%);
    color: #ffffff;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
    margin: 3rem 0;
    position: relative;
    overflow: hidden;
}

/* Standard dark card has subtle border so it doesn't bleed into dark background */
.card.theme-dark {
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.card.theme-dark.featured-card {
    border: 2px solid var(--color-primary);
}

.module.theme-dark::after,
.card.theme-dark::after,
.cta-module::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.module.theme-dark h1,
.module.theme-dark h2,
.module.theme-dark h3,
.module.theme-dark h4,
.cta-module h2 {
    color: #ffffff;
    font-size: 1.875rem;
    margin-bottom: 12px;
    border: none;
    padding: 0;
    font-family: var(--font-family-headers);
}

.module.theme-dark p,
.cta-module p {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 24px auto;
    font-size: var(--font-size-base, 1.0625rem);
}

.module.theme-dark a,
.module.theme-dark .btn,
.card.theme-dark a,
.card.theme-dark .btn,
.cta-module a,
.cta-module .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    text-decoration: none !important;
    background-color: var(--color-primary);
    color: #ffffff !important;
    border: none !important;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.module.theme-dark a:hover,
.module.theme-dark .btn:hover,
.card.theme-dark a:hover,
.card.theme-dark .btn:hover,
.cta-module a:hover,
.cta-module .btn:hover {
    background-color: var(--color-primary-hover);
}

/* Theme: Light (formerly Newsletter card style) */
.module.theme-light,
.card.theme-light,
.newsletter-module {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin: 3rem 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.module.theme-light h1,
.module.theme-light h2,
.module.theme-light h3,
.module.theme-light h4,
.newsletter-module h3 {
    font-family: var(--font-family-headers);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-top: 0;
}

.module.theme-light p,
.newsletter-module p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-bottom: 8px;
}

/* Theme: Primary */
.module.theme-primary,
.card.theme-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: #ffffff;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
    margin: 3rem 0;
    position: relative;
    overflow: hidden;
}

.card.theme-primary {
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.module.theme-primary::after,
.card.theme-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.module.theme-primary h1,
.module.theme-primary h2,
.module.theme-primary h3,
.module.theme-primary h4 {
    color: #ffffff;
    font-size: 1.875rem;
    margin-bottom: 12px;
    border: none;
    padding: 0;
    font-family: var(--font-family-headers);
}

.module.theme-primary p {
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto 24px auto;
    font-size: var(--font-size-base, 1.0625rem);
}

.module.theme-primary a,
.module.theme-primary .btn,
.card.theme-primary a,
.card.theme-primary .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    text-decoration: none !important;
    background-color: #ffffff;
    color: var(--color-primary) !important;
    border: none !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.module.theme-primary a:hover,
.module.theme-primary .btn:hover,
.card.theme-primary a:hover,
.card.theme-primary .btn:hover {
    background-color: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

/* Ensure themed cards do not inherit vertical margins and padding meant for section modules */
.card.theme-dark,
.card.theme-light,
.card.theme-primary {
    margin: 0 !important;
    padding: 28px;
}

/* Keep themed card content layout consistent with standard card styling and preserve typographic hierarchy */
.card.theme-dark h1,
.card.theme-light h1,
.card.theme-primary h1 {
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 8px;
    font-family: var(--font-family-headers);
}

.card.theme-dark h2,
.card.theme-light h2,
.card.theme-primary h2 {
    font-size: 1.35rem;
    margin-top: 0;
    margin-bottom: 8px;
    font-family: var(--font-family-headers);
}

.card.theme-dark h3,
.card.theme-light h3,
.card.theme-primary h3 {
    font-size: 1.2rem;
    margin-top: 0;
    margin-bottom: 8px;
    font-family: var(--font-family-headers);
}

.card.theme-dark h4,
.card.theme-light h4,
.card.theme-primary h4 {
    font-size: 1.1rem;
    margin-top: 0;
    margin-bottom: 8px;
    font-family: var(--font-family-headers);
}

.card.theme-dark h1, .card.theme-dark h2, .card.theme-dark h3, .card.theme-dark h4,
.card.theme-primary h1, .card.theme-primary h2, .card.theme-primary h3, .card.theme-primary h4 {
    color: #ffffff;
}

.card.theme-light h1, .card.theme-light h2, .card.theme-light h3, .card.theme-light h4 {
    color: var(--color-primary);
}

.card.theme-dark p {
    color: var(--color-text-light);
    font-size: var(--font-size-card-text, 0.9375rem);
    margin-bottom: 8px;
}

.card.theme-light p {
    color: var(--color-text-muted);
    font-size: var(--font-size-card-text, 0.9375rem);
    margin-bottom: 8px;
}

.card.theme-primary p {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-card-text, 0.9375rem);
    margin-bottom: 8px;
}

.card.theme-dark p:last-child,
.card.theme-light p:last-child,
.card.theme-primary p:last-child {
    margin-bottom: 0;
}

/* Theme modifier states (like success message container) */
.module.theme-light.module-success,
.newsletter-module.newsletter-success {
    border-color: rgba(37, 99, 235, 0.4);
    background-color: rgba(37, 99, 235, 0.02);
}

.module.theme-light.module-success h3,
.newsletter-module.newsletter-success h3 {
    color: var(--color-primary);
}

.newsletter-form {
    display: flex;
    gap: 12px;
}

.newsletter-form input[type="email"] {
    flex-grow: 1;
    width: auto;
}

@media (max-width: 576px) {
    .newsletter-form {
        flex-direction: column;
    }
}

/* -------------------------------------------------------------
   Layout Split System
   ------------------------------------------------------------- */
.grid-split-2 {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    margin-top: 32px;
}

@media (max-width: 768px) {
    .grid-split-2 {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* Panels */
.panel-theme-dark {
    background-color: var(--color-secondary);
    color: #ffffff;
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.panel-theme-dark h3 {
    color: #ffffff;
    font-family: var(--font-family-headers);
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.panel-theme-dark p {
    color: var(--color-text-light);
    margin-bottom: 24px;
    font-size: 0.9375rem;
}

.panel-theme-dark ul {
    list-style: none;
    padding: 0;
}

.panel-theme-dark li {
    margin-bottom: 16px;
    font-size: 0.9375rem;
    display: flex;
    flex-direction: column;
}

.panel-theme-dark li strong {
    color: #ffffff;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.panel-theme-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

/* Retaining legacy layout compatibility wrapper classes */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    margin-top: 32px;
}

@media (max-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

.contact-info {
    background-color: var(--color-secondary);
    color: #ffffff;
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.contact-info h3 {
    color: #ffffff;
    font-family: var(--font-family-headers);
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--color-text-light);
    margin-bottom: 24px;
    font-size: 0.9375rem;
}

.contact-info ul {
    list-style: none;
    padding: 0;
}

.contact-info li {
    margin-bottom: 16px;
    font-size: 0.9375rem;
    display: flex;
    flex-direction: column;
}

.contact-info li strong {
    color: #ffffff;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.contact-form-wrapper {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Blog Feed & Post styles */
.post-meta {
    font-family: var(--font-family-body);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-top: -1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 12px;
}

.post-footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.back-link {
    font-family: var(--font-family-body);
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-primary-hover);
}

.blog-feed {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.feed-item {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 2.5rem;
}

.feed-item:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

.feed-title {
    margin-top: 0;
    margin-bottom: 8px;
    font-family: var(--font-family-display);
    font-size: 1.75rem;
    font-weight: 700;
}

.feed-title a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.feed-title a:hover {
    color: var(--color-primary);
}

.feed-date {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.feed-excerpt {
    color: var(--color-text);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.read-more {
    font-family: var(--font-family-body);
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.read-more:hover {
    color: var(--color-primary-hover);
}

/* Grid feed cards overrides */
.blog-feed.card-grid {
    margin-top: 3rem;
    gap: 24px;
    display: grid;
}

.card.feed-item {
    border-bottom: none;
    padding: 28px;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card.feed-item .feed-title {
    font-size: 1.35rem;
    margin-top: 0;
    margin-bottom: 4px;
    line-height: 1.35;
}

.card.feed-item .feed-date {
    margin-bottom: 8px;
}

.card.feed-item .feed-excerpt {
    margin-top: 0;
    margin-bottom: 12px;
    flex-grow: 1;
    font-size: 0.95rem;
    line-height: 1.55;
}

.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.pagination a {
    font-family: var(--font-family-body);
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.pagination a:hover {
    background-color: var(--color-bg-body);
    border-color: var(--color-primary);
}

.page-number {
    font-family: var(--font-family-body);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* Card & Card-Grid Layouts */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin: 2.5rem 0;
}

.card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card h1, .card h2, .card h3, .card h4 {
    margin-top: 0;
    margin-bottom: 4px;
    font-family: var(--font-family-headers);
    color: var(--color-card-title, var(--color-secondary));
    font-size: var(--font-size-card-title, 1.25rem);
}

.card p {
    color: var(--color-card-text, var(--color-text-muted));
    font-size: var(--font-size-card-text, 0.95rem);
    line-height: 1.55;
    margin-bottom: 8px;
}

.card p:last-child {
    margin-bottom: 0;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(var(--color-primary-rgb), 0.5);
}

/* Modifier card states */
.card.featured-card {
    border: 2px solid var(--color-primary);
    position: relative;
    overflow: hidden;
}

.card.featured-card::before {
    content: "FEATURED";
    position: absolute;
    top: 15px;
    right: -30px;
    background-color: var(--color-primary);
    color: #ffffff;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 4px 30px;
    transform: rotate(45deg);
}

.site-footer {
    background-color: var(--footer-bg, var(--footer-dark-bg));
    color: var(--footer-text, var(--footer-dark-text));
    border-top: 1px solid var(--footer-border, var(--footer-dark-border));
    padding: 40px 0;
    margin-top: auto;
    font-size: 0.875rem;
}

/* Footer Themes */
.site-footer.theme-dark {
    --footer-bg: var(--footer-dark-bg);
    --footer-text: var(--footer-dark-text);
    --footer-link: var(--footer-dark-link);
    --footer-link-hover: var(--footer-dark-link-hover);
    --footer-header: var(--footer-dark-header);
    --footer-header-hover: var(--footer-dark-header-hover);
    --footer-border: var(--footer-dark-border);
}

.site-footer.theme-light {
    --footer-bg: var(--footer-light-bg);
    --footer-text: var(--footer-light-text);
    --footer-link: var(--footer-light-link);
    --footer-link-hover: var(--footer-light-link-hover);
    --footer-header: var(--footer-light-header);
    --footer-header-hover: var(--footer-light-header-hover);
    --footer-border: var(--footer-light-border);
}

.site-footer.theme-primary {
    --footer-bg: var(--footer-primary-bg);
    --footer-text: var(--footer-primary-text);
    --footer-link: var(--footer-primary-link);
    --footer-link-hover: var(--footer-primary-link-hover);
    --footer-header: var(--footer-primary-header);
    --footer-header-hover: var(--footer-primary-header-hover);
    --footer-border: var(--footer-primary-border);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* Flat Footer Navigation */
.footer-nav-flat {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 28px;
}

.footer-nav-flat a {
    color: var(--footer-link, var(--footer-dark-link));
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.footer-nav-flat a:hover {
    color: var(--footer-link-hover, var(--footer-dark-link-hover));
}

/* Multi-Column Footer Navigation */
.footer-nav-multi {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 32px;
    text-align: left;
}

.footer-nav-col h4 {
    margin-top: 0;
    margin-bottom: 16px;
    font-family: var(--font-family-headers);
    font-size: 1rem;
}

.footer-nav-col h4 a {
    color: var(--footer-header, var(--footer-dark-header));
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-nav-col h4 a:hover {
    color: var(--footer-header-hover, var(--footer-dark-header-hover));
}

.footer-nav-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-nav-col ul a {
    color: var(--footer-link, var(--footer-dark-link));
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-nav-col ul a:hover {
    color: var(--footer-link-hover, var(--footer-dark-link-hover));
}

/* Footer Copyright & Markdown Output */
.site-footer p {
    margin: 0;
    text-align: center;
    color: var(--footer-text, var(--footer-dark-text));
    font-size: 0.85rem;
}

/* If copyright sits inside footer p block, add a border/top gap */
.site-footer .footer-copyright {
    border-top: 1px solid var(--footer-border, var(--footer-dark-border));
    padding-top: 24px;
    margin-top: 8px;
    text-align: center;
}

/* ==========================================================================
   VIDEO EMBEDS
   ========================================================================== */
.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    margin: 2.5rem auto;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    overflow: hidden;
}

@media (min-width: 992px) {
    .video-container {
        width: 75%;
    }
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ==========================================================================
   SLIDER COMPONENT
   ========================================================================== */
.slider-container {
    position: relative;
    max-width: var(--slider-max-width);
    margin: auto;
    overflow: hidden;
    font-family: var(--font-family-body);
    border-radius: var(--border-radius, 8px);
}

.slider-container input[type="radio"] {
    display: none;
}

.slider-container .slider-images {
    display: flex;
    transition: var(--slider-transition);
}

.slider-container .slide-item img {
    width: 100%;
    display: block;
    height: auto;
}

.slider-container .slide-item {
    position: relative;
}

/* JS-Enabled Slider Layouts */
.slider-container.js-enabled.animation-fade .slider-images {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.slider-container.js-enabled.animation-fade .slide-item {
    width: 100%;
    grid-column: 1;
    grid-row: 1;
    opacity: 0;
    transition: var(--slider-fade-transition, opacity 0.5s ease-in-out);
    pointer-events: none;
}

.slider-container.js-enabled.animation-fade .slide-item.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
}

.slider-container .slide-caption {
    position: absolute;
    bottom: 24px;
    left: 24px;
    right: 24px;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #ffffff;
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.5;
    z-index: 3;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
    pointer-events: none;
}

.slider-container .slide-item.active .slide-caption {
    opacity: 1;
    transform: translateY(0);
}

.slider-container .slider-nav {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.slider-container:hover .slider-nav {
    opacity: 1;
}

.slider-container .nav-set {
    display: none;
    position: absolute;
    top: 50%;
    width: 100%;
    transform: translateY(-50%);
    justify-content: space-between;
    box-sizing: border-box;
    padding: 0 15px;
    pointer-events: none;
}

.slider-container .nav-set label {
    background: var(--slider-nav-bg);
    color: var(--slider-nav-color);
    padding: var(--slider-nav-padding);
    cursor: pointer;
    font-weight: bold;
    border-radius: var(--slider-nav-border-radius);
    user-select: none;
    pointer-events: auto;
}

.slider-container .nav-set label:hover {
    background: var(--slider-nav-bg-hover);
}

/* Ensure slider components inside themed wrappers (cards, modules) align correctly and override restrictive margins */
.card.theme-dark .slider-container,
.card.theme-light .slider-container,
.card.theme-primary .slider-container,
.module.theme-dark .slider-container,
.module.theme-light .slider-container,
.module.theme-primary .slider-container {
    position: relative;
    margin: 2rem auto !important;
    width: 100%;
    max-width: 100%;
    clear: both;
}