/**
 * Main Stylesheet for Institutes Wiki Theme
 * A simplified, clean design for the MVP
 *
 * @package Institutes_Wiki
 * @since 1.0.0
 */

/* ==========================================================================
   CSS Variables / Custom Properties
   ========================================================================== */

:root {
    /* Colors */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-secondary: #64748b;
    --color-success: #10b981;
    --color-danger: #ef4444;

    /* Grays */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "Courier New", Courier, monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Borders */
    --border-radius: 0.375rem;
    --border-color: var(--color-gray-200);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Container */
    --container-max-width: 1280px;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

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

html {
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: var(--font-sans);
    color: var(--color-gray-900);
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Screen Reader Only */
.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
}

.screen-reader-text:focus {
    background-color: #f1f1f1;
    border-radius: 3px;
    box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.6);
    clip: auto !important;
    color: #21759b;
    display: block;
    font-size: 14px;
    font-weight: bold;
    height: auto;
    left: 5px;
    line-height: normal;
    padding: 15px 23px 14px;
    text-decoration: none;
    top: 5px;
    width: auto;
    z-index: 100000;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.site {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-content {
    flex: 1;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.site-branding h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.site-title a {
    color: var(--color-gray-900);
    text-decoration: none;
}

.site-description {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

.header-search {
    flex: 1;
    max-width: 500px;
}

.search-form {
    display: flex;
    gap: 0;
}

.search-field {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-size: 0.875rem;
}

.search-submit {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    cursor: pointer;
    display: flex;
    align-items: center;
}

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

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm);
    cursor: pointer;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .main-navigation {
        display: none;
    }

    .header-inner {
        flex-direction: column;
    }

    .header-search {
        max-width: 100%;
        width: 100%;
    }
}

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */

.breadcrumbs {
    background: var(--color-gray-50);
    padding: var(--spacing-md) 0;
    font-size: 0.875rem;
}

.breadcrumb-list {
    list-style: none;
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    margin-right: var(--spacing-sm);
    color: var(--color-gray-400);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    text-decoration: none;
}

.button-primary {
    background: var(--color-primary);
    color: white;
}

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

.button-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--color-gray-700);
}

.button-outline:hover {
    background: var(--color-gray-50);
    color: var(--color-gray-900);
}

.button-secondary {
    background: var(--color-gray-200);
    color: var(--color-gray-700);
}

.button-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.813rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: white;
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    font-size: 1rem;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .hero-description {
        font-size: 1rem;
    }
}

/* ==========================================================================
   Directory Layout
   ========================================================================== */

.directory-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

@media (max-width: 1024px) {
    .directory-layout {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Filters Sidebar
   ========================================================================== */

.filters-sidebar {
    background: var(--color-gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.filters-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.filter-group {
    margin-bottom: var(--spacing-lg);
}

.filter-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    cursor: pointer;
}

.filter-option input[type="checkbox"] {
    cursor: pointer;
}

.option-count {
    color: var(--color-gray-500);
    font-size: 0.813rem;
}

.filter-actions {
    margin-top: var(--spacing-lg);
}

.filters-toggle-mobile {
    display: none;
}

@media (max-width: 1024px) {
    .filters-sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        height: 100vh;
        width: 280px;
        z-index: 1000;
        transition: left 0.3s ease;
        overflow-y: auto;
    }

    .filters-sidebar.is-open {
        left: 0;
    }

    .filters-toggle-mobile {
        display: inline-flex;
        align-items: center;
        gap: var(--spacing-sm);
    }
}

/* ==========================================================================
   Directory Header & Controls
   ========================================================================== */

.directory-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.results-count {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.directory-controls {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.view-toggle {
    display: flex;
    gap: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.view-btn {
    padding: var(--spacing-sm);
    background: white;
    border: none;
    cursor: pointer;
    border-right: 1px solid var(--border-color);
}

.view-btn:last-child {
    border-right: none;
}

.view-btn.active {
    background: var(--color-primary);
    color: white;
}

.view-btn:hover:not(.active) {
    background: var(--color-gray-50);
}

/* ==========================================================================
   Institute Grid/List
   ========================================================================== */

.institutes-grid.view-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.institutes-grid.view-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.institutes-grid.view-list .institute-card {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: var(--spacing-md);
}

/* ==========================================================================
   Institute Card
   ========================================================================== */

.institute-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all 0.2s ease;
}

.institute-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.card-inner {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card-image {
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
}

.card-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
}

.card-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card-title a {
    color: var(--color-gray-900);
}

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

.card-excerpt {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.card-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: 0.813rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.meta-item svg {
    flex-shrink: 0;
}

.card-actions {
    margin-top: auto;
}

/* ==========================================================================
   Badges
   ========================================================================== */

.institute-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-orientation {
    background: var(--color-primary);
    color: white;
}

.badge-location {
    background: var(--color-gray-200);
    color: var(--color-gray-700);
}

/* ==========================================================================
   Institute Profile Page
   ========================================================================== */

.institute-header {
    background: var(--color-gray-50);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

.institute-header-inner {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
}

.institute-logo-large {
    flex-shrink: 0;
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.institute-logo-large img {
    max-width: 200px;
}

.institute-header-content {
    flex: 1;
}

.institute-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.institute-header-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.institute-last-updated {
    font-size: 0.813rem;
    color: var(--color-gray-500);
    margin-top: var(--spacing-md);
}

.institute-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

@media (max-width: 1024px) {
    .institute-layout {
        grid-template-columns: 1fr;
    }

    .institute-sidebar {
        order: 2;
    }
}

/* Institute Sidebar */
.institute-sidebar .widget {
    background: var(--color-gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.widget-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
}

.info-list {
    display: grid;
    gap: var(--spacing-sm);
}

.info-list dt {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

.info-list dd {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.toc-list {
    list-style: none;
}

.toc-list li {
    margin-bottom: var(--spacing-sm);
}

.toc-list a {
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

.toc-list a:hover {
    color: var(--color-primary);
}

/* Content Sections */
.content-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--border-color);
}

.content-section:last-child {
    border-bottom: none;
}

.content-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-900);
}

.content-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.institute-training-details .detail-item {
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.institute-contact-info .contact-item {
    margin-bottom: var(--spacing-sm);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--spacing-2xl) 0;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-menu {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
}

.footer-menu a {
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

.footer-menu a:hover {
    color: white;
}

.footer-disclaimer {
    font-size: 0.813rem;
    color: var(--color-gray-500);
    text-align: center;
    width: 100%;
    margin-top: var(--spacing-md);
}

/* ==========================================================================
   Loading State
   ========================================================================== */

.loading-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.spinner {
    border: 3px solid var(--color-gray-200);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==========================================================================
   Responsive Utilities
   ========================================================================== */

@media (max-width: 768px) {
    .hero-section {
        padding: var(--spacing-xl) 0;
    }

    .institute-header-inner {
        flex-direction: column;
    }

    .institutes-grid.view-grid {
        grid-template-columns: 1fr;
    }

    .institutes-grid.view-list .institute-card {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Search Autocomplete
   ========================================================================== */

.search-autocomplete {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
}

.autocomplete-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-gray-700);
    border-bottom: 1px solid var(--color-gray-100);
    transition: background-color 0.2s ease;
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.active {
    background: var(--color-gray-50);
    color: var(--color-primary);
}

/* ==========================================================================
   Active Filters
   ========================================================================== */

.active-filters {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border-radius: var(--border-radius);
}

.active-filters-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.active-filter-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-primary);
    color: white;
    border-radius: var(--border-radius);
    font-size: 0.813rem;
}

.remove-filter {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    padding: 0;
    margin-left: var(--spacing-xs);
}

.remove-filter:hover {
    opacity: 0.8;
}

/* ==========================================================================
   Filters Overlay (Mobile)
   ========================================================================== */

.filters-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

@media (min-width: 1025px) {
    .filters-overlay {
        display: none;
    }
}