/* ========================================
   CSS Reset & Variables
   ======================================== */

:root {
    /* Colors */
    --color-primary: #11181f;
    --color-secondary: #005ae1;
    --color-text: #1a1a1a;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-light: #f9fafb;
    --color-border: #e5e7eb;
    --color-accent: #005ae1;
    
    /* Typography */
    --font-primary: 'Times New Roman', Times, serif;
    --font-secondary: 'Times New Roman', Times, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --content-max-width: 800px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

html {
    font-size: 16px;
    scroll-behavior: auto;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Accessibility
   ======================================== */

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

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 1000;
}

.skip-link:focus {
    top: 0;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-secondary);
    text-decoration: none;
}

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

/* ========================================
   Container & Layout
   ======================================== */

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

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

.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

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

.header-top {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    min-height: 80px;
}

/* Navigation */
.main-navigation {
    position: relative;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 101;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-menu > li {
    position: relative;
}

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    display: block;
}

.nav-menu a:hover {
    text-decoration: none;
    color: var(--color-secondary);
}

/* Submenu */
.has-submenu {
    position: relative;
}

.submenu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    margin-left: 4px;
    vertical-align: middle;
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    list-style: none;
    min-width: 200px;
    padding: var(--spacing-xs);
    margin-top: var(--spacing-xs);
    opacity: 0;
    visibility: hidden;
}

.has-submenu:hover .submenu,
.has-submenu:focus-within .submenu {
    opacity: 1;
    visibility: visible;
}

.submenu li {
    margin: 0;
}

.submenu a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
}

.submenu a:hover {
    background: var(--color-bg-light);
    text-decoration: none;
}

/* Site Title */
.site-title {
    margin: 0;
    text-align: center;
}

.site-title a {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

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

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.about-link {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
}

.search-form {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    padding: var(--spacing-xs) var(--spacing-sm);
    position: relative;
    z-index: 100;
}

.search-form:focus-within {
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(0, 90, 225, 0.1);
}

.search-form input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 0.875rem;
    width: 150px;
}

.search-form input:focus {
    width: 200px;
}

.search-form button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-form button:hover {
    color: var(--color-secondary);
}

/* Search Results Dropdown */
.search-results {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 1001;
    display: none;
    margin-top: var(--spacing-xs);
    min-width: 300px;
}

.search-results.active {
    display: block;
}

.search-results-empty {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.search-result-item {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    display: block;
    text-decoration: none;
    color: var(--color-text);
}

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

.search-result-item:hover,
.search-result-item:focus {
    background: var(--color-bg-light);
    color: var(--color-secondary);
    outline: none;
}

.search-result-item:focus {
    outline: 2px solid var(--color-secondary);
    outline-offset: -2px;
}

.search-result-title {
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.search-result-item:hover .search-result-title {
    color: var(--color-secondary);
}

.search-result-excerpt {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.search-result-excerpt mark {
    background: rgba(0, 90, 225, 0.2);
    color: var(--color-primary);
    font-weight: 600;
    padding: 0 2px;
}

.search-result-date {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .search-results {
        left: -10px;
        right: -10px;
    }
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
    padding-top: var(--spacing-xl);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-secondary);
    border-radius: 2px;
}

/* ========================================
   Favorites Section
   ======================================== */

.favorites-section {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-light);
}

.favorites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.favorite-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

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

.favorite-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.favorite-title a {
    color: var(--color-primary);
    text-decoration: none;
}

.favorite-title a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

.favorite-excerpt {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 0;
    flex-grow: 1;
}

/* ========================================
   Posts Section
   ======================================== */

.posts-section {
    padding: var(--spacing-2xl) 0;
}

.posts-list {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.post-item {
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.post-item:first-child {
    padding-top: 0;
}

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

/* No hover animations */

.post-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.post-title {
    font-size: 1.125rem;
    margin: 0;
    flex: 1;
}

.post-title a {
    color: var(--color-text);
    text-decoration: none;
}

.post-title a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

.post-date {
    color: var(--color-text-light);
    font-size: 0.875rem;
    white-space: nowrap;
    flex-shrink: 0;
}

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

.site-footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-light);
    margin-top: var(--spacing-2xl);
}

.contact-info {
    text-align: center;
    color: var(--color-text-light);
    margin: 0;
}

.contact-info a {
    color: var(--color-secondary);
    font-weight: 500;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .header-top {
        grid-template-columns: auto 1fr;
        gap: var(--spacing-md);
    }
    
    .header-actions {
        grid-column: 1 / -1;
        justify-content: space-between;
        width: 100%;
    }
    
    .site-title {
        order: -1;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: 8px;
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-sm);
        margin-top: var(--spacing-sm);
        opacity: 0;
        visibility: hidden;
        display: none;
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        display: flex;
    }
    
    .nav-menu > li {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-menu > li:last-child {
        border-bottom: none;
    }
    
    .nav-menu a {
        padding: var(--spacing-sm);
        display: block;
    }
    
    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        border-top: 1px solid var(--color-border);
        margin-top: var(--spacing-xs);
        padding-left: var(--spacing-md);
    }
    
    .submenu-toggle {
        display: inline-block;
    }
    
    .favorites-grid {
        grid-template-columns: 1fr;
    }
    
    .post-header {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .search-form input {
        width: 120px;
    }
    
    .search-form input:focus {
        width: 150px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }
    
    .favorite-card {
        padding: var(--spacing-md);
    }
    
    .header-top {
        padding: var(--spacing-sm) 0;
        min-height: 60px;
    }
}

/* ========================================
   Animations & Transitions
   ======================================== */

/* Animations removed for instant display */

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .site-header,
    .site-footer,
    .search-form {
        display: none;
    }
    
    .main-content {
        padding-top: 0;
    }
}

/* ========================================
   Additional Polish & Utilities
   ======================================== */

/* Focus visible for better accessibility */
*:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Selection styling */
::selection {
    background: var(--color-secondary);
    color: white;
}

/* Smooth scrolling disabled */
html {
    scroll-behavior: auto;
}

/* All animations disabled */
*,
*::before,
*::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
}

/* Loading state for cards - removed animations */

/* ========================================
   Interest Areas Page
   ======================================== */

.interest-areas-section {
    padding: var(--spacing-2xl) 0;
}

.section-intro {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.subsection-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.interest-areas-current {
    margin-bottom: var(--spacing-2xl);
}

.interest-group {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.interest-group:hover {
    border-color: var(--color-secondary);
    box-shadow: var(--shadow-md);
}

.interest-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.interest-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.posts-list-mini {
    list-style: none;
    padding: 0;
    margin: 0;
}

.posts-list-mini li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-md);
}

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

/* No hover animations */

.posts-list-mini a {
    color: var(--color-text);
    text-decoration: none;
    flex: 1;
    line-height: 1.5;
}

.posts-list-mini a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

.posts-list-mini time {
    color: var(--color-text-light);
    font-size: 0.875rem;
    white-space: nowrap;
    flex-shrink: 0;
}

/* Archive Section - Less Prominent */
.interest-areas-archive {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 3px dashed var(--color-border);
    position: relative;
}

.interest-areas-archive::before {
    content: 'Archive';
    position: absolute;
    top: -1rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg);
    padding: 0 var(--spacing-md);
    color: var(--color-text-light);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.archive-title {
    color: var(--color-text-light);
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    border-bottom-color: var(--color-border);
    opacity: 0.8;
}

.archive-intro {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-lg);
    font-style: italic;
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.archive-group {
    opacity: 0.75;
    border-color: var(--color-border);
    background: var(--color-bg-light);
    border-style: dashed;
    border-width: 1px;
}

.archive-group:hover {
    opacity: 1;
    border-style: solid;
    border-color: var(--color-secondary);
}

.archive-group .interest-title {
    font-size: 1.125rem;
    color: var(--color-text-light);
    font-weight: 500;
}

.archive-group .interest-description {
    display: none;
}

.archive-group .posts-list-mini a {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.archive-group .posts-list-mini a:hover {
    color: var(--color-secondary);
}

.archive-group .posts-list-mini time {
    font-size: 0.8125rem;
}

/* Responsive adjustments for Interest Areas */
@media (max-width: 768px) {
    .interest-group {
        padding: var(--spacing-md);
    }
    
    .posts-list-mini li {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .posts-list-mini time {
        font-size: 0.8125rem;
    }
    
    .subsection-title {
        margin-top: var(--spacing-xl);
    }
}

/* Utility classes */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-text-light);
}

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

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