/* ==========================================================================
   WCAG Accessible Joomla 5 Template - Main Stylesheet
   WCAG 2.2 Level AA Compliant
   Version: 1.0.0
   ========================================================================== */

/* ─── Google Fonts Preconnect (added via PHP) ─────────────────────────────── */

/* ==========================================================================
   1. CSS Custom Properties (Design Tokens)
   ========================================================================== */
:root {
    /* Colors - overridden by PHP inline styles per scheme */
    --color-primary:    #1a56a0;
    --color-secondary:  #2e7d32;
    --color-bg:         #ffffff;
    --color-text:       #1a1a2e;
    --color-surface:    #f4f6f9;
    --color-border:     #dee2e6;
    --color-link:       #1a56a0;
    --color-link-hover: #0e3a6e;
    --header-bg:        #1a56a0;
    --header-text:      #ffffff;
    --footer-bg:        #1a1a2e;
    --footer-text:      #e8ecf0;

    /* Typography */
    --font-family:      'Sarabun', sans-serif;
    --font-size-base:   16px;
    --font-size-sm:     0.875rem;
    --font-size-lg:     1.125rem;
    --font-size-xl:     1.25rem;
    --font-size-2xl:    1.5rem;
    --font-size-3xl:    1.875rem;
    --font-size-4xl:    2.25rem;
    --line-height-base: 1.7;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-1:  0.25rem;
    --spacing-2:  0.5rem;
    --spacing-3:  0.75rem;
    --spacing-4:  1rem;
    --spacing-5:  1.25rem;
    --spacing-6:  1.5rem;
    --spacing-8:  2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;

    /* Layout */
    --header-height:    72px;
    --a11y-bar-height:  44px;
    --sidebar-width:    280px;
    --border-radius-sm: 4px;
    --border-radius:    8px;
    --border-radius-lg: 12px;

    /* Shadows */
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.1);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg:  0 8px 24px rgba(0,0,0,0.12);

    /* Transitions */
    --transition-fast:   150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow:   400ms ease;

    /* Focus ring - WCAG 2.4.11 Focus Appearance */
    --focus-ring-color:  #ff6b00;
    --focus-ring-width:  3px;
    --focus-ring-offset: 2px;
}

/* ==========================================================================
   2. Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

/* Respect user's motion preferences (WCAG 2.3.3) */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ==========================================================================
   3. Focus Styles (WCAG 2.4.7, 2.4.11, 2.4.12)
   ========================================================================== */

/* Default focus - always visible */
:focus-visible {
    outline: var(--focus-ring-width) solid var(--focus-ring-color);
    outline-offset: var(--focus-ring-offset);
    border-radius: var(--border-radius-sm);
}

/* Focus style: outline */
[data-focus-style="outline"] :focus-visible {
    outline: 3px solid var(--focus-ring-color);
    outline-offset: 2px;
}

/* Focus style: highlight */
[data-focus-style="highlight"] :focus-visible {
    outline: 2px solid var(--focus-ring-color);
    background-color: rgba(255, 107, 0, 0.15);
}

/* Focus style: bold-outline */
[data-focus-style="bold-outline"] :focus-visible {
    outline: 4px solid var(--focus-ring-color);
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(255, 107, 0, 0.25);
}

/* Remove default focus for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

/* ==========================================================================
   4. Skip Links (WCAG 2.4.1)
   ========================================================================== */
.skip-links {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 9999;
    display: flex;
    gap: var(--spacing-2);
    padding: var(--spacing-1);
}

.skip-link {
    position: absolute;
    top: -200px;
    left: var(--spacing-2);
    background: var(--color-primary);
    color: #ffffff;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    text-decoration: none;
    white-space: nowrap;
    transition: top var(--transition-fast);
    z-index: 9999;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid var(--focus-ring-color);
    outline-offset: 2px;
}

/* ==========================================================================
   5. Accessibility Toolbar
   ========================================================================== */
.a11y-bar {
    background: #1a1a2e;
    color: #e8ecf0;
    border-bottom: 2px solid var(--color-primary);
    min-height: var(--a11y-bar-height);
    position: relative;
    z-index: 100;
    transition: background-color var(--transition-normal);
}

.color-scheme-highcontrast .a11y-bar {
    background: #000000;
    border-bottom-color: #ffdd00;
}

.color-scheme-dark .a11y-bar {
    background: #0a0a16;
    border-bottom-color: #4a9eff;
}

.a11y-bar__inner {
    margin: 0 auto;
    padding: 0 var(--spacing-4);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-4);
    min-height: var(--a11y-bar-height);
}

.a11y-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) 0;
}

.a11y-group + .a11y-group {
    border-left: 1px solid rgba(255,255,255,0.2);
    padding-left: var(--spacing-4);
}

.a11y-group__label {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,0.7);
    white-space: nowrap;
    cursor: default;
    user-select: none;
}

/* Accessibility Buttons */
.a11y-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    min-height: 36px;
    padding: var(--spacing-1) var(--spacing-2);
    background: rgba(255,255,255,0.1);
    color: #ffffff;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.a11y-btn:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.6);
    transform: translateY(-1px);
}

.a11y-btn:active {
    transform: translateY(0);
}

.a11y-btn--active {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.a11y-btn--large {
    font-size: 1.1em;
}

/* High contrast adjustments */
.color-scheme-highcontrast .a11y-btn {
    border-color: #ffdd00;
    color: #ffdd00;
}
.color-scheme-highcontrast .a11y-btn:hover {
    background: #ffdd00;
    color: #000000;
}

/* Color Scheme Swatches */
.color-btn {
    padding: var(--spacing-1);
    min-width: 36px;
    min-height: 36px;
}

.color-swatch {
    display: block;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.5);
}

.color-swatch--default      { background: linear-gradient(135deg, #1a56a0 50%, #ffffff 50%); }
.color-swatch--highcontrast { background: linear-gradient(135deg, #000000 50%, #ffdd00 50%); }
.color-swatch--dark         { background: linear-gradient(135deg, #121212 50%, #4a9eff 50%); }
.color-swatch--grayscale    { background: linear-gradient(135deg, #444444 50%, #f0f0f0 50%); }

.a11y-select {
    background: rgba(255,255,255,0.1);
    color: #ffffff;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-1) var(--spacing-3);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    cursor: pointer;
    min-height: 36px;
}

.a11y-select option {
    background: #1a1a2e;
    color: #ffffff;
}

/* ==========================================================================
   6. Site Header
   ========================================================================== */
.site-header {
    background: var(--header-bg);
    color: var(--header-text);
    position: relative;
    z-index: 50;
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.sticky-header .site-header {
    position: sticky;
    top: 0;
}

.site-header__inner {
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Topbar */
.topbar {
    background: rgba(0,0,0,0.15);
    min-height: 36px;
    display: flex;
    align-items: center;
    padding: var(--spacing-1) 0;
    font-size: var(--font-size-sm);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* Header Main */
.header-main {
    display: flex;
    align-items: center;
    min-height: var(--header-height);
    padding: var(--spacing-3) 0;
    gap: var(--spacing-6);
}

.header-main--centered {
    justify-content: center;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-6) 0;
}

.header-main--split {
    justify-content: space-between;
}

/* Site Logo */
.site-logo {
    flex-shrink: 0;
}

.site-logo__link {
    display: inline-flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

.site-logo__link:hover {
    opacity: 0.9;
}

.site-logo__img {
    display: block;
    max-height: 70px;
    width: auto;
    object-fit: contain;
}

.site-logo__text {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--header-text);
    line-height: 1.2;
}

.site-logo__tagline {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-top: var(--spacing-1);
    color: var(--header-text);
}

.header-modules {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

/* ==========================================================================
   7. Navigation & Dropdowns (WCAG 2.1.1, 2.4.4, 3.2.3)
   ========================================================================== */
.site-nav {
    background: rgba(0,0,0,0.1);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.site-nav .nav-main {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Nav Items */
.site-nav .nav-main > li > a,
.site-nav .nav-main > li > button,
.site-nav .nav-main > li > span {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--header-text);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-family: inherit;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    letter-spacing: 0.3px;
    text-decoration: none;
    transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
    min-height: 44px; /* WCAG 2.5.8 Target Size */
    cursor: pointer;
}

.site-nav .nav-main > li > a:hover,
.site-nav .nav-main > li > a:focus,
.site-nav .nav-main > li > button:hover,
.site-nav .nav-main > li > button:focus,
.site-nav .nav-main > li.active > a,
.site-nav .nav-main > li.active > button,
.site-nav .nav-main > li.is-open > a,
.site-nav .nav-main > li.is-open > button {
    border-bottom-color: var(--color-secondary);
    background: rgba(255,255,255,0.1);
    outline: none; /* Focus handled by custom JS or standard ring */
}

/* Dropdown Caret icon */
.dropdown-caret {
    font-size: 0.7em;
    margin-left: var(--spacing-1);
    transition: transform var(--transition-fast);
}

.site-nav .nav-main li.is-open > a > .dropdown-caret,
.site-nav .nav-main li.is-open > button > .dropdown-caret {
    transform: rotate(180deg);
}

/* Dropdown Container */
.site-nav .nav-main .nav-submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: var(--color-bg);
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    border: 1px solid var(--color-border);
    z-index: 100;
    list-style: none;
    padding: var(--spacing-2) 0;
    margin: 0;
}

.site-nav .nav-main li.has-dropdown {
    position: relative;
}

/* Show submenu on hover or focus-within (JS handles click/kbd via .is-open) */
.site-nav .nav-main li.has-dropdown:hover > .nav-submenu,
.site-nav .nav-main li.has-dropdown.is-open > .nav-submenu,
.site-nav .nav-main li.has-dropdown:focus-within > .nav-submenu {
    display: block;
    animation: fadeIn var(--transition-fast) ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Dropdown Items */
.site-nav .nav-main .nav-submenu a,
.site-nav .nav-main .nav-submenu button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-2) var(--spacing-4);
    color: var(--color-text);
    background: transparent;
    border: none;
    font-family: inherit;
    font-size: var(--font-size-sm);
    text-align: left;
    text-decoration: none;
    min-height: 44px; /* WCAG 2.5.8 */
    transition: background-color var(--transition-fast), color var(--transition-fast);
    cursor: pointer;
}

.site-nav .nav-main .nav-submenu a:hover,
.site-nav .nav-main .nav-submenu a:focus,
.site-nav .nav-main .nav-submenu button:hover,
.site-nav .nav-main .nav-submenu button:focus {
    background: var(--color-surface);
    color: var(--color-primary);
    outline-offset: -2px;
}

/* Multi-level Dropdowns */
.site-nav .nav-main .nav-submenu .nav-submenu {
    top: 0;
    left: 100%;
    border-radius: var(--border-radius);
}

/* Rotate carets in submenus to point right */
.site-nav .nav-main .nav-submenu .dropdown-caret {
    transform: rotate(-90deg);
}

/* Sidebar Navigation Elements */
.sidebar .nav-sidebar {
    list-style: none;
    padding: 0;
    margin: 0;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.sidebar .nav-sidebar > li {
    border-bottom: 1px solid var(--color-border);
}

.sidebar .nav-sidebar > li:last-child {
    border-bottom: none;
}

.sidebar .nav-sidebar a,
.sidebar .nav-sidebar button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--color-link);
    background: transparent;
    border: none;
    border-left: 3px solid transparent;
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-align: left;
    text-decoration: none;
    cursor: pointer;
    min-height: 44px;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.sidebar .nav-sidebar a:hover,
.sidebar .nav-sidebar a:focus,
.sidebar .nav-sidebar button:hover,
.sidebar .nav-sidebar button:focus,
.sidebar .nav-sidebar li.active > a,
.sidebar .nav-sidebar li.active > button {
    background: var(--color-surface);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
}

/* Sidebar Dropdown Container */
.sidebar .nav-sidebar .nav-submenu {
    display: none;
    list-style: none;
    padding: 0;
    margin: 0;
    background: rgba(0,0,0,0.03);
    border-top: 1px solid var(--color-border);
}

.sidebar .nav-sidebar li.has-dropdown.is-open > .nav-submenu {
    display: block;
}

.sidebar .nav-sidebar .nav-submenu a,
.sidebar .nav-sidebar .nav-submenu button {
    padding-left: var(--spacing-8);
    font-size: var(--font-size-sm);
    border-left-width: 0;
}

/* Caret rotation for sidebar menus */
.sidebar .nav-sidebar li.is-open > a > .dropdown-caret,
.sidebar .nav-sidebar li.is-open > button > .dropdown-caret {
    transform: rotate(180deg);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: 2px solid rgba(255,255,255,0.6);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-2);
    cursor: pointer;
    color: var(--header-text);
    min-width: 44px;
    min-height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 22px;
}

.hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background: currentColor;
    border-radius: 2px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-toggle[aria-expanded="true"] .hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   8. Banner Area
   ========================================================================== */
.site-banner {
    width: 100%;
    overflow: hidden;
    background: var(--color-surface);
}

/* ==========================================================================
   9. Breadcrumb
   ========================================================================== */
.breadcrumb-wrapper {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-2) 0;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-1);
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: var(--font-size-sm);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--color-border);
    margin-right: var(--spacing-1);
}

.breadcrumb-item a {
    color: var(--color-link);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
}

/* ==========================================================================
   10. Top / Bottom Module Strips
   ========================================================================== */
.top-modules,
.bottom-modules {
    padding: var(--spacing-8) 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.bottom-modules {
    border-top: 1px solid var(--color-border);
    border-bottom: none;
}

/* ==========================================================================
   11. Main Content Layout
   ========================================================================== */
.site-main {
    padding: var(--spacing-8) 0;
    background: var(--color-bg);
    outline: none; /* Remove outline from main, focus handled by skip-link */
}

.container-fluid {
    padding: 0 var(--spacing-4);
    margin: 0 auto;
    width: 100%;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(-1 * var(--spacing-3));
}

[class*="col-"] {
    padding: 0 var(--spacing-3);
    width: 100%;
}

/* Bootstrap-like grid */
@media (min-width: 768px) {
    .col-md-6  { width: 50%; }
    .col-md-12 { width: 100%; }
}

@media (min-width: 992px) {
    .col-lg-3  { width: 25%; }
    .col-lg-4  { width: 33.333%; }
    .col-lg-6  { width: 50%; }
    .col-lg-8  { width: 66.666%; }
    .col-12    { width: 100%; }
}

/* Content modules spacing */
.content-top-modules,
.content-bottom-modules {
    margin-bottom: var(--spacing-6);
}

.content-bottom-modules {
    margin-top: var(--spacing-6);
    margin-bottom: 0;
}

/* Sidebar */
.sidebar {
    padding-top: var(--spacing-2);
}

/* ==========================================================================
   12. Typography (WCAG 1.4.4, 1.4.12)
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    color: var(--color-text);
    margin-bottom: var(--spacing-4);
}

h1 { font-size: clamp(1.5rem, 3vw, var(--font-size-4xl)); }
h2 { font-size: clamp(1.25rem, 2.5vw, var(--font-size-3xl)); }
h3 { font-size: clamp(1.125rem, 2vw, var(--font-size-2xl)); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
    max-width: 75ch; /* WCAG 1.4.8 - line length */
}

/* Links - WCAG 1.4.1 (not color alone) */
a {
    color: var(--color-link);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-link-hover);
    text-decoration-thickness: 2px;
}

/* Minimum text spacing - WCAG 1.4.12 */
p, li, h1, h2, h3, h4, h5, h6 {
    letter-spacing: 0.01em;
    word-spacing: 0.1em;
}

blockquote {
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-4) var(--spacing-6);
    margin: var(--spacing-6) 0;
    background: var(--color-surface);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-style: italic;
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

/* ==========================================================================
   13. Images
   ========================================================================== */
img, video, iframe {
    max-width: 100%;
    height: auto;
    display: block;
}

img {
    border-radius: var(--border-radius-sm);
}

figure {
    margin: var(--spacing-6) 0;
}

figcaption {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    opacity: 0.75;
    margin-top: var(--spacing-2);
    text-align: center;
}

/* ==========================================================================
   14. Tables (WCAG 1.3.1)
   ========================================================================== */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-sm);
}

caption {
    font-weight: var(--font-weight-bold);
    text-align: left;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-base);
    color: var(--color-text);
}

th {
    background: var(--color-primary);
    color: #ffffff;
    font-weight: var(--font-weight-semibold);
    text-align: left;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--color-border);
}

td {
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--color-border);
    vertical-align: top;
}

tr:nth-child(even) td {
    background: var(--color-surface);
}

tr:hover td {
    background: rgba(26, 86, 160, 0.05);
}

/* Responsive table */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ==========================================================================
   15. Forms (WCAG 1.3.1, 3.3.2, 4.1.2)
   ========================================================================== */
.control-group,
.form-group {
    margin-bottom: var(--spacing-5);
}

label {
    display: block;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-2);
    color: var(--color-text);
    font-size: var(--font-size-base);
}

label .required {
    color: #c0392b;
    margin-left: var(--spacing-1);
    font-weight: var(--font-weight-bold);
}

label .required::after {
    content: " (required)";
    font-size: 0.8em;
    font-weight: normal;
    color: #666;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="tel"],
input[type="url"],
input[type="number"],
textarea,
select {
    display: block;
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    min-height: 44px; /* WCAG 2.5.8 */
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 86, 160, 0.15);
    outline: none;
}

input[aria-invalid="true"],
.invalid input,
.invalid textarea,
.invalid select {
    border-color: #c0392b;
}

.error-message,
.form-control-feedback {
    color: #c0392b;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-1);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.hint-text {
    color: var(--color-text);
    opacity: 0.7;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-1);
}

/* ==========================================================================
   16. Buttons (WCAG 2.5.3, 2.5.8)
   ========================================================================== */
.btn,
button:not(.a11y-btn):not(.mobile-menu-toggle) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    min-height: 44px;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast),
                border-color var(--transition-fast), box-shadow var(--transition-fast),
                transform var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-link-hover);
    border-color: var(--color-link-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

/* ==========================================================================
   17. Module Styling
   ========================================================================== */
.moduletable {
    margin-bottom: var(--spacing-8);
}

.moduletable .module-title,
.moduletable h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    padding-bottom: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    border-bottom: 3px solid var(--color-primary);
    color: var(--color-text);
    position: relative;
}

.moduletable .module-title::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--color-secondary);
}

.mod-list {
    list-style: none;
    padding: 0;
}

.mod-list li {
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--color-border);
}

.mod-list li:last-child {
    border-bottom: none;
}

/* ==========================================================================
   18. Alert / System Messages
   ========================================================================== */
.alert {
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    font-size: var(--font-size-base);
}

.alert-info    { background: #e3f2fd; border-color: #1976d2; color: #0d47a1; }
.alert-success { background: #e8f5e9; border-color: #2e7d32; color: #1b5e20; }
.alert-warning { background: #fff8e1; border-color: #f57f17; color: #e65100; }
.alert-error,
.alert-danger  { background: #ffebee; border-color: #c62828; color: #b71c1c; }

/* ==========================================================================
   19. Pagination (WCAG 4.1.2)
   ========================================================================== */
.pagination-wrapper {
    margin-top: var(--spacing-8);
}

.pagination {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-1);
    list-style: none;
    padding: 0;
    align-items: center;
}

.pagination .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: var(--spacing-2) var(--spacing-3);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-link);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.pagination .page-item.active .page-link {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

.pagination .page-link:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
}

/* ==========================================================================
   20. Footer
   ========================================================================== */
.site-footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: var(--spacing-12) 0 var(--spacing-6);
    margin-top: auto;
    transition: background-color var(--transition-normal);
}

.site-footer__inner {
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.footer-content a {
    color: var(--footer-text);
    opacity: 0.85;
}

.footer-content a:hover {
    color: #ffffff;
    opacity: 1;
}

.footer-copyright {
    font-size: var(--font-size-sm);
    opacity: 0.7;
    margin-bottom: var(--spacing-2);
}

.footer-copyright a {
    color: inherit;
    font-weight: var(--font-weight-medium);
}

.footer-wcag-notice {
    font-size: var(--font-size-sm);
    opacity: 0.6;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* ==========================================================================
   21. Utility Classes
   ========================================================================== */
.visually-hidden,
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-left   { text-align: left; }
.fw-bold     { font-weight: var(--font-weight-bold); }
.fw-medium   { font-weight: var(--font-weight-medium); }

/* ==========================================================================
   22. High Contrast Mode Overrides (WCAG 1.4.3, 1.4.6)
   ========================================================================== */
.color-scheme-highcontrast {
    filter: none;
}
.color-scheme-highcontrast * {
    box-shadow: none !important;
    text-shadow: none !important;
}
.color-scheme-highcontrast img {
    filter: contrast(1.1);
}

/* ==========================================================================
   23. Grayscale Mode
   ========================================================================== */
.color-scheme-grayscale img {
    filter: grayscale(100%);
}

/* ==========================================================================
   24. Font Switcher Loading States
   ========================================================================== */
[data-font="noto-sans-thai"] { font-family: 'Noto Sans Thai', sans-serif; }
[data-font="prompt"]         { font-family: 'Prompt', sans-serif; }
[data-font="kanit"]          { font-family: 'Kanit', sans-serif; }
[data-font="inter"]          { font-family: 'Inter', sans-serif; }
[data-font="roboto"]         { font-family: 'Roboto', sans-serif; }
[data-font="open-sans"]      { font-family: 'Open Sans', sans-serif; }

/* ==========================================================================
   25. Print Styles (WCAG 1.3.4)
   ========================================================================== */
@media print {
    .a11y-bar,
    .site-nav,
    .mobile-menu-toggle,
    .skip-links,
    .site-footer .footer-wcag-notice {
        display: none !important;
    }

    body {
        font-size: 12pt;
        color: #000000;
        background: #ffffff;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }

    a[href^="#"]::after,
    a[href^="javascript"]::after {
        content: "";
    }
}

/* ==========================================================================
   26. Responsive Design
   ========================================================================== */

/* Tablet */
@media (max-width: 992px) {
    :root {
        --header-height: 64px;
    }

    .a11y-bar__inner {
        gap: var(--spacing-3);
        flex-wrap: wrap;
        min-height: auto;
        padding: var(--spacing-2) var(--spacing-4);
    }

    .a11y-group + .a11y-group {
        border-left: none;
        padding-left: 0;
        border-top: 1px solid rgba(255,255,255,0.1);
        padding-top: var(--spacing-2);
        width: 100%;
    }

    .header-main {
        flex-wrap: wrap;
    }

    .site-nav ul ul {
        position: static;
        box-shadow: none;
        border: none;
        background: rgba(0,0,0,0.1);
        border-radius: 0;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--header-bg);
        box-shadow: var(--shadow-lg);
        z-index: 200;
    }

    .site-nav.is-open {
        display: block;
    }

    /* Dropdown overrides for mobile */
    .site-nav .nav-main {
        flex-direction: column;
    }

    .site-nav .nav-main > li > a,
    .site-nav .nav-main > li > button {
        border-bottom: 1px solid rgba(255,255,255,0.1);
        border-left: 3px solid transparent;
        justify-content: space-between;
        width: 100%;
        text-align: left;
    }

    .site-nav .nav-main > li > a:hover,
    .site-nav .nav-main > li > button:hover {
        border-left-color: var(--color-secondary);
        border-bottom-color: rgba(255,255,255,0.1);
    }

    .site-nav .nav-main .nav-submenu {
        position: static;
        display: none;
        background: rgba(0,0,0,0.2);
        box-shadow: none;
        border: none;
        width: 100%;
    }

    .site-nav .nav-main li.has-dropdown:hover > .nav-submenu {
        display: none; /* Disable hover on mobile, rely on tap/is-open */
    }

    .site-nav .nav-main li.is-open > .nav-submenu {
        display: block;
    }

    .site-nav .nav-main .nav-submenu a,
    .site-nav .nav-main .nav-submenu button {
        padding-left: var(--spacing-8);
        color: var(--header-text); /* Ensure contrast on mobile menu */
    }
    
    .site-nav .nav-main .nav-submenu a:hover,
    .site-nav .nav-main .nav-submenu button:hover {
        color: var(--color-surface);
        background: rgba(255,255,255,0.1);
    }

    .main-row {
        flex-direction: column;
    }

    [class*="col-"] {
        width: 100%;
    }

    .a11y-bar__inner {
        justify-content: center;
    }

    .site-main {
        padding: var(--spacing-6) 0;
    }

    h1 { font-size: 1.6rem; }
    h2 { font-size: 1.35rem; }
    h3 { font-size: 1.15rem; }
}

/* Small Mobile */
@media (max-width: 480px) {
    .a11y-bar__inner {
        gap: var(--spacing-2);
    }

    .a11y-btn {
        min-width: 40px;
        min-height: 40px;
    }

    .site-main {
        padding: var(--spacing-4) 0;
    }
}