:root {
    /* Filipiuk's 8pt Grid & Colors */
    --spacing-1: 8px;
    --spacing-2: 16px;
    --spacing-3: 24px;
    --spacing-4: 32px;
    --spacing-5: 40px;
    --spacing-6: 48px;

    --primary: #2a9d8f; /* Scientific Teal */
    --primary-dark: #1d7066;
    --bg-body: #f9f9fb;
    --white: #ffffff;
    --text-main: #2d3436;
    --text-muted: #636e72;
    --border-color: #dfe6e9;

    --radius-card: 12px;
    --shadow-card: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --border-card: 1px solid var(--border-color);
}

html {
    scroll-behavior: smooth;
}

::selection {
    background: var(--primary); /* Teal Selection */
    color: #fff;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-body: #1a1a1a;
    --white: #2d2d2d;
    --text-main: #e0e0e0;
    --text-muted: #a0a0a0;
    --border-color: #404040;
    --shadow-card: 0 4px 6px -1px rgba(0,0,0,0.3);
}

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.5;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: var(--spacing-2);
    margin-top: var(--spacing-4);
    color: inherit;
}

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

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-2); }
.wrapper { display: flex; gap: var(--spacing-4); margin-top: var(--spacing-4); }
.primary { flex: 2; min-width: 0; }
.sidebar { flex: 1; min-width: 300px; }

@media (max-width: 900px) { .wrapper { flex-direction: column; } .sidebar { width: 100%; } }

/* Header Styling */
.header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-main);
}

.logo__img {
    display: block;
}

.main-nav {
    display: flex;
    align-items: center;
}

.menu__list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-3);
}

.menu__link {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: 6px;
    transition: all 0.2s;
}

.menu__link:hover {
    color: var(--primary);
    background-color: rgba(42, 157, 143, 0.1);
}

/* Header Actions */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.header__btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}

.header__btn:hover {
    background-color: rgba(0,0,0,0.05);
    color: var(--primary);
}

/* Mobile Menu Toggle */
.menu__btn {
    display: none; /* Hidden on desktop */
}

/* Responsive Menu */
@media (max-width: 768px) {
    .menu__btn {
        display: flex;
    }

    .menu__list {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-3);
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
    }

    .menu__list--active {
        display: flex;
    }

    .menu__item {
        width: 100%;
    }

    .menu__link {
        display: block;
        padding: var(--spacing-2);
    }

    .main-nav {
        /* On mobile, main-nav just wraps the list which is absolute positioned */
    }
}


/* Post List */
.post-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.card {
    background: var(--white);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: var(--border-card);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: row;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px -5px rgba(0,0,0,0.15), 0 4px 6px -2px rgba(0,0,0,0.1);
}

.card__thumbnail {
    width: 240px;
    flex-shrink: 0;
    position: relative;
}

.card__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.card__content {
    padding: var(--spacing-3);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card__header {
    margin-bottom: var(--spacing-1);
}

.card__scale-badge {
    display: inline-block;
    padding: 4px 8px;
    background-color: var(--primary);
    color: #fff;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-1);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card__title {
    font-size: 1.5rem;
    margin: 0 0 var(--spacing-1) 0;
}

.card__title a {
    color: var(--text-main);
}
.card__title a:hover {
    color: var(--primary);
}

.card__excerpt {
    font-size: 1rem;
    color: var(--text-muted);
    flex-grow: 1;
    margin-bottom: var(--spacing-2);
}

.card__footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.btn {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    text-align: center;
}

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

/* Sidebar Improvements */
.widget {
    background: var(--white);
    padding: var(--spacing-3);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    margin-bottom: var(--spacing-3);
    border: var(--border-card);
}

.widget__title {
    font-size: 1.1rem;
    margin-top: 0;
    margin-bottom: var(--spacing-2);
    padding-bottom: var(--spacing-1);
    border-bottom: 2px solid var(--primary);
    color: var(--text-main);
}

.widget__list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.widget__item {
    margin-bottom: var(--spacing-1);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-1);
}
.widget__item:last-child { border-bottom: none; }
.widget__link {
    color: var(--text-main);
    display: block;
}
.widget__link:hover {
    color: var(--primary);
}

/* Footer Fixes */
.footer {
    background: var(--white);
    color: var(--text-muted);
    padding: var(--spacing-5) 0;
    margin-top: var(--spacing-6);
    border-top: 1px solid var(--border-color);
}
.footer__container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
}
.footer__widget h3 {
    color: var(--text-main);
    margin-top: 0;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2);
}
.footer__social {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

/* Search Modal */
.search-modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    display: none; justify-content: center; z-index: 9999;
}
.search-modal-overlay {
    position: absolute; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); backdrop-filter: blur(4px);
}
.search-modal-content {
    background: var(--white); width: 90%; max-width: 600px; margin-top: 10vh;
    z-index: 10000; border-radius: 12px; padding: var(--spacing-3);
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
    display: flex; flex-direction: column; max-height: 80vh;
}
#search-input {
    width: 100%; padding: var(--spacing-2); border: 2px solid var(--border-color);
    border-radius: 8px; font-size: 1.1rem; outline: none; background: var(--bg-body); color: var(--text-main);
}
#search-input:focus { border-color: var(--primary); }
#search-results { margin-top: var(--spacing-2); overflow-y: auto; flex-grow: 1; }
.search-res-item {
    display: block; padding: var(--spacing-2); border-bottom: 1px solid var(--border-color);
    text-decoration: none; color: var(--text-main); transition: background 0.2s;
}
.search-res-item:hover { background-color: rgba(42, 157, 143, 0.1); }
.search-res-title { font-weight: 700; color: var(--primary); }
.search-res-summary { font-size: 0.9rem; color: var(--text-muted); }

/* Progress Bar */
#progress-bar {
    position: fixed; top: 0; left: 0; height: 3px;
    background: var(--primary); width: 0%; z-index: 10001;
    transition: width 0.2s ease;
}

/* Content Typography */
.post__content {
    font-size: 1.1rem;
    line-height: 1.8;
}
.post__content p { margin-bottom: var(--spacing-3); }
.post__content ul, .post__content ol { margin-bottom: var(--spacing-3); padding-left: var(--spacing-4); }
.post__content li { margin-bottom: var(--spacing-1); }
.post__content blockquote {
    border-left: 4px solid var(--primary);
    margin: var(--spacing-3) 0;
    padding: var(--spacing-2) var(--spacing-3);
    background: rgba(42, 157, 143, 0.1);
    font-style: italic;
}
.post__content img { max-width: 100%; height: auto; border-radius: var(--radius-card); }
.post__content table { width: 100%; border-collapse: collapse; margin: var(--spacing-3) 0; }
.post__content th, .post__content td { padding: var(--spacing-1); border: 1px solid var(--border-color); }
.post__content th { background: #f1f3f5; }

/* Code Blocks */
pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: var(--spacing-2);
    border-radius: var(--radius-card);
    overflow-x: auto;
    margin-bottom: var(--spacing-3);
}
code {
    font-family: 'Fira Code', monospace;
    font-size: 0.9em;
}

/* Responsive */
@media (max-width: 600px) {
    .card { flex-direction: column; }
    .card__thumbnail { width: 100%; height: 200px; }
}

/* Theme Icons Toggle */
.theme-icon { display: none; }
[data-theme="light"] .theme-icon-moon { display: block; }
[data-theme="dark"] .theme-icon-sun { display: block; }


/* Comments & Forms (Awesome Style) */
.comments-section, .contact-section, .subscribe-form {
    background: var(--white);
    padding: var(--spacing-4);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    margin-top: var(--spacing-4);
    border: var(--border-card);
}

.comments-section h3, .contact-section h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-3);
    border-bottom: 2px solid var(--primary);
    padding-bottom: var(--spacing-1);
    display: inline-block;
}

.form-group {
    margin-bottom: var(--spacing-3);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-1);
    font-weight: 600;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: var(--spacing-2);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-body);
    color: var(--text-main);
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.form-control:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.1);
}

.form-group-inline {
    display: flex;
    gap: var(--spacing-2);
}

/* Button Improvements */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
}

.btn--primary {
    background-color: var(--primary);
    color: #ffffff !important; /* Force white text */
    box-shadow: 0 4px 6px rgba(42, 157, 143, 0.2);
}

.btn--primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(42, 157, 143, 0.3);
    color: #ffffff !important;
}

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

/* VS Table Contrast Fixes */
.vs-table-container th {
    background-color: var(--primary);
    color: #ffffff;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
}

[data-theme="dark"] .vs-table-container th {
    background-color: var(--primary-dark);
    color: #ffffff;
}

.vs-table-container td {
    background-color: var(--white);
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .vs-table-container td {
    border-color: var(--border-color);
}

/* Pager (Previous/Next) 50/50 Split */
.pager {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-3);
    margin-top: var(--spacing-5);
}

.pager__item {
    flex: 1;
    min-width: 0; /* Allow text truncation if needed */
}

.pager__link {
    display: block;
    padding: var(--spacing-3);
    background: var(--white);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: var(--border-card);
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
    color: var(--text-main);
}

.pager__link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
    border-color: var(--primary);
    color: var(--primary);
}

.pager__subtitle {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--spacing-1);
    letter-spacing: 0.05em;
}

.pager__title {
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1.3;
}

@media (max-width: 600px) {
    .pager {
        flex-direction: column;
    }
}

/* Recommended Reads Grid */
.related-posts .grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* Force 2 columns */
    gap: var(--spacing-3);
}

@media (max-width: 600px) {
    .related-posts .grid-container {
        grid-template-columns: 1fr;
    }
}

/* Form Status Messages */
.form-status {
    margin-top: var(--spacing-2);
    font-weight: 600;
    padding: var(--spacing-2);
    border-radius: 4px;
    display: none;
}
.form-status:not(:empty) { display: block; }
.form-status.success { background-color: rgba(42, 157, 143, 0.1); color: var(--primary-dark); border: 1px solid var(--primary); }
.form-status.error { background-color: rgba(231, 76, 60, 0.1); color: #c0392b; border: 1px solid #e74c3c; }



/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--primary);
    color: #fff;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: none; /* Hidden by default */
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s, opacity 0.2s;
    z-index: 1000;
    border: none;
}

.scroll-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.scroll-to-top.show {
    display: flex;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Footer Menu Fixes */
.footer__widget h3 {
    margin-bottom: var(--spacing-2);
    border-bottom: 2px solid var(--primary);
    display: inline-block;
    padding-bottom: 4px;
}

.copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: var(--spacing-2);
}


/* UI Fixes (Search, Subscribe, Overflows) */
#search-input, .subscribe-form .form-control {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box; /* Crucial for padding */
    padding: var(--spacing-2);
}

.subscribe-form {
    padding: var(--spacing-2);
    margin-top: var(--spacing-2);
    font-size: 0.9rem;
}

.subscribe-form .btn {
    padding: 8px 16px;
    font-size: 0.85rem;
}

/* Pager & Author Box Fix */
.pager {
    margin-top: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--border-color);
}

.authorbox {
    margin-top: var(--spacing-4);
    clear: both; /* Ensure no float overlap */
}

/* Popup Overlay (Subscribe/Interest) */
.popup-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 10002;
    backdrop-filter: blur(2px);
}

.popup-content {
    background: var(--white);
    padding: var(--spacing-4);
    border-radius: var(--radius-card);
    width: 90%;
    max-width: 400px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    position: relative;
    text-align: center;
}

.popup-close {
    position: absolute;
    top: 10px; right: 10px;
    background: none; border: none;
    font-size: 1.5rem; cursor: pointer;
    color: var(--text-muted);
}


/* Responsive Images (Universal) */
img {
    max-width: 100%;
    height: auto;
    display: block; /* Removes bottom space */
}

/* Post Content Images */
.post__content img {
    border-radius: var(--radius-card);
    margin: var(--spacing-3) 0;
    box-shadow: var(--shadow-card);
    transition: transform 0.2s ease;
}

.post__content figure {
    margin: var(--spacing-3) 0;
}

.post__content figcaption {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: var(--spacing-1);
    font-style: italic;
}

/* Avatar Images */
.logo__img, .authorbox__avatar img {
    border-radius: 50%; /* Ensure roundness */
    object-fit: cover;
}

/* Grid & Layout Responsiveness */
@media (max-width: 768px) {
    .header__inner {
        padding: 0 var(--spacing-2);
        height: 60px; /* Slightly smaller header on mobile */
    }

    .container {
        padding: 0 var(--spacing-2);
    }

    .post__title {
        font-size: 1.75rem; /* Adjust title size */
    }

    /* Stack footer columns */
    .footer__container {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
        text-align: center;
    }

    .footer__widget h3 {
        display: inline-block; /* Center underline */
    }

    /* Stack Pager */
    .pager {
        flex-direction: column;
    }

    /* Stack Search Modal slightly different */
    .search-modal-content {
        width: 95%;
        margin-top: 5vh;
    }
}


/* TOC & Tags Styling */
.toc {
    background: var(--bg-body);
    padding: var(--spacing-2);
    border-radius: var(--radius-card);
    margin: var(--spacing-3) 0;
    border: 1px solid var(--border-color);
}
.toc__title {
    font-weight: 700;
    cursor: pointer;
    margin-bottom: var(--spacing-1);
}
.toc__content ul {
    padding-left: var(--spacing-3);
    margin: 0;
}
.tags__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-1);
    list-style: none;
    padding: 0;
}
.tags__item .tags__link {
    background: var(--bg-body);
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 4px 12px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    text-transform: none;
}
.tags__item .tags__link:hover {
    background: var(--primary);
    color: #fff !important;
    border-color: var(--primary);
}


/* Pager and Authorbox Fixes */
.pager {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-5);
    margin-bottom: var(--spacing-5);
    padding-top: var(--spacing-3);
    border-top: 1px solid var(--border-color);
    clear: both; /* Ensure no overlap with floats */
}

.authorbox {
    margin-top: var(--spacing-5);
    background: var(--white);
    padding: var(--spacing-3);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: var(--border-card);
    clear: both;
}

@media (max-width: 600px) {
    .pager {
        flex-direction: column;
        gap: var(--spacing-2);
    }
}
:root {
  /* Scientific Teal - HSL for easy variants */
  --primary-h: 172;
  --primary-s: 66%;
  --primary-l: 39%;

  --primary-color: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
  --primary-dark: hsl(var(--primary-h), var(--primary-s), 29%);
  --primary-light: hsl(var(--primary-h), var(--primary-s), 95%);
  --primary-alpha: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.1);

  /* Modern Grays */
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;

  /* Semantic Colors */
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #e74c3c;
  --danger-alpha: rgba(231, 76, 60, 0.2);

  /* Structure */
  --bg-body: var(--gray-100);
  --bg-card: #ffffff;
  --text-main: var(--gray-900);
  --text-muted: var(--gray-700);
  --border-color: var(--gray-300);

  --radius-card: 8px;
  --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);

  --focus-ring: 0 0 0 3px var(--primary-alpha);
  --focus-ring-error: 0 0 0 3px var(--danger-alpha);
}

/* Dark Mode Overrides */
[data-theme="dark"] {
  --bg-body: #121212;
  --bg-card: #1e1e1e;
  --text-main: #e0e0e0;
  --text-muted: #a0a0a0;
  --border-color: #333333;
  --gray-200: #2d2d2d; /* For inputs */

  --primary-light: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.15);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
}

body {
  font-family: 'Inter', sans-serif; /* Modern, clean font */
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-body);
  margin: 0;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Smooth Transitions for interactive elements */
a, button, input, textarea, .card {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Header & Navigation */
.site-header {
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 8px;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-card);
  font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-color);
  background-color: var(--primary-light);
}

/* Post Styling */
.post-header {
  margin-bottom: 32px;
}

.post-title {
  font-size: 2.5rem;
  margin-bottom: 12px;
  color: var(--text-main);
  line-height: 1.2;
}

/* Tags */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 9999px; /* Pill shape */
  background-color: var(--gray-200);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid transparent;
}

.tag:hover {
  background-color: var(--primary-color);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(42, 157, 143, 0.25);
}

/* Buttons (Modern) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-card);
  background-color: var(--primary-color);
  color: #ffffff !important; /* Force readable text */
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.95rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 6px -1px rgba(42, 157, 143, 0.4);
}

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

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--bg-body), 0 0 0 6px var(--primary-alpha);
}

/* Forms & Comments */
.comments-section {
  margin-top: 64px;
  padding: 32px;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.comments-section h3 {
  margin-top: 0;
  color: var(--text-main);
  border-bottom: 2px solid var(--primary-color);
  display: inline-block;
  padding-bottom: 4px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  font-family: inherit;
  background-color: var(--bg-body); /* Input matches page bg for contrast */
  color: var(--text-main);
  font-size: 1rem;
  box-sizing: border-box; /* Fix width calculation */
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: var(--focus-ring);
  background-color: var(--bg-card);
}

/* Palette's Micro-UX: Validation States */
.input-error {
  border-color: var(--danger-color) !important;
  box-shadow: var(--focus-ring-error) !important;
  animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}

/* Palette's Micro-UX: Loading Button */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
  opacity: 0.8;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 1.2em;
  height: 1.2em;
  top: 50%;
  left: 50%;
  margin-top: -0.6em; /* Half size */
  margin-left: -0.6em;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Status Message */
.form-status {
  margin-top: 16px;
  padding: 12px;
  border-radius: var(--radius-card);
  font-size: 0.9rem;
  font-weight: 500;
  display: none; /* Hidden by default */
}

.form-status:not(:empty) { display: block; }

.form-status.error {
  background-color: rgba(231, 76, 60, 0.1);
  color: var(--danger-color);
  border: 1px solid var(--danger-color);
}

.form-status.success {
  background-color: var(--primary-light);
  color: var(--primary-dark);
  border: 1px solid var(--primary-color);
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
}

@media (max-width: 768px) {
  .comments-section { padding: 20px; }

  .nav-menu {
    display: none; /* Add JS to toggle */
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-item { margin: 8px 0; }
  .nav-link { display: block; }

  .mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-main);
    cursor: pointer;
  }
}
/* Fix Tag Widget Styles */
.tags__link, .widget-taglist__link {
    display: inline-flex !important;
    align-items: center;
    padding: 4px 12px !important; /* Compact padding */
    font-size: 0.8rem !important; /* Smaller font */
    line-height: 1.2;
    border-radius: 9999px !important; /* Pill shape */
    background-color: var(--gray-200) !important;
    color: var(--text-muted) !important;
    font-weight: 600 !important;
    text-transform: none !important; /* Fix uppercase */
    box-shadow: none !important;
    border: 1px solid transparent !important;
    margin: 0 4px 8px 0 !important; /* Spacing */
    height: auto !important;
    width: auto !important;
}

.tags__link:hover, .widget-taglist__link:hover {
    background-color: var(--primary-color) !important;
    color: #ffffff !important;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(42, 157, 143, 0.25) !important;
    text-decoration: none !important;
}

/* Fix Scroll to Top Button */
.scroll-to-top {
    width: 48px !important;
    height: 48px !important;
    padding: 0 !important; /* Reset padding from .btn */
    border-radius: 50% !important; /* Perfect circle */
    bottom: 24px !important; /* Slightly more spacing */
    right: 24px !important;
    background-color: var(--primary-color) !important;
    color: #ffffff !important;
    display: none; /* Hidden by JS initially */
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important;
    z-index: 9999;
}

.scroll-to-top:hover {
    background-color: var(--primary-dark) !important;
    transform: translateY(-4px) !important;
    box-shadow: 0 8px 16px rgba(42, 157, 143, 0.3) !important;
}

.scroll-to-top svg {
    width: 24px;
    height: 24px;
    stroke-width: 2.5px;
}

.scroll-to-top.show {
    display: flex !important;
}
/* Tag Counter */
.widget-taglist__counter {
    font-size: 0.75em;
    opacity: 0.8;
    margin-left: 4px;
}
/* --- Modern UI & Responsiveness Overhaul --- */

/* 2. Card Design Polish */
.card {
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    background-color: var(--bg-card);
    overflow: hidden; /* Ensure rounded corners clip content */
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-alpha);
}

/* Card Content Layout */
.card__content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.card__title a {
    background-image: linear-gradient(var(--primary-color), var(--primary-color));
    background-position: 0% 100%;
    background-repeat: no-repeat;
    background-size: 0% 2px;
    transition: background-size 0.3s;
    text-decoration: none;
}

.card__title a:hover {
    background-size: 100% 2px;
    color: var(--primary-color);
}

/* "Read More" Button - Subtle & Modern */
.read-more-btn, .btn-secondary {
    background-color: transparent !important;
    color: var(--primary-color) !important;
    border: 1px solid var(--primary-color) !important;
    padding: 8px 20px !important;
    font-weight: 600 !important;
    transition: all 0.2s ease !important;
    box-shadow: none !important;
}

.read-more-btn:hover, .btn-secondary:hover {
    background-color: var(--primary-color) !important;
    color: #ffffff !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(42, 157, 143, 0.25) !important;
}

/* 3. Extremely Responsive Layout */

/* Container Constraints */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px; /* Use px for predictable gutter */
}

/* Responsive Grid/Flex adjustments */
@media (max-width: 768px) {
    /* Stack Sidebar */
    .wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        margin-top: 32px;
    }

    /* Stack Card Content (Image on top) */
    .card {
        flex-direction: column;
    }

    .card__thumbnail {
        width: 100%;
        height: 220px; /* Fixed height for consistency */
        overflow: hidden;
    }

    .card__thumbnail img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .card:hover .card__thumbnail img {
        transform: scale(1.05); /* Subtle zoom on hover */
    }

    /* Better Touch Targets */
    .btn, .nav-link, .menu__link {
        min-height: 44px; /* A11y Standard */
        display: inline-flex;
        align-items: center;
    }
}

/* 4. Global Typography & "Awesome" Touches */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Modern Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Widget Header Polish */
.widget__title {
    position: relative;
    padding-bottom: 12px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color); /* Thinner border */
}

.widget__title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* Responsive Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 1. Dark Mode Tags Fix (Improved Readability) */
[data-theme="dark"] .widget-taglist__link,
[data-theme="dark"] .tags__link,
[data-theme="dark"] .tag {
    background-color: var(--gray-800) !important;
    color: var(--text-main) !important; /* Brighter text */
    border: 1px solid var(--gray-700) !important; /* Visible border */
}

[data-theme="dark"] .widget-taglist__link:hover,
[data-theme="dark"] .tags__link:hover,
[data-theme="dark"] .tag:hover {
    background-color: var(--primary-color) !important;
    color: #ffffff !important;
    border-color: var(--primary-color) !important;
    text-decoration: none !important;
}

/* --- Recommended Reads Styling (Palette UX) --- */
.related-posts-section {
    margin-top: 48px;
    margin-bottom: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.related-title {
    font-size: 1.25rem;
    margin-bottom: 24px;
    color: var(--text-main);
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.related-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
    opacity: 0.5;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-post-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
    height: 100%;
}

.related-post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.related-post-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.related-post-image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background-color: var(--gray-200);
    position: relative;
}

.related-post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.related-post-card:hover .related-post-image img {
    transform: scale(1.05);
}

.related-post-content {
    padding: 16px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.related-post-title {
    font-size: 1rem;
    margin: 0 0 8px 0;
    line-height: 1.4;
    color: var(--text-main);
    font-weight: 600;
}

.related-post-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: auto;
}

@media (max-width: 900px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .related-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Dark Mode Menu Fixes --- */
[data-theme="dark"] .site-header {
    background-color: #1a1a1a; /* Distinct from #121212 body */
    border-bottom: 1px solid #333;
}

[data-theme="dark"] .nav-link {
    color: #b0b0b0;
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
    color: var(--primary-color);
    background-color: rgba(42, 157, 143, 0.15);
}

/* Ensure Dropdown/Mobile Menu contrast */
[data-theme="dark"] .menu__list {
    background-color: #1e1e1e;
    border-color: #333;
}

/* --- Compact Pager Fixes (Palette UX) --- */
.pager {
    margin-top: 32px;
    margin-bottom: 32px;
    padding-bottom: 0;
    border-bottom: none;
}

.pager__link {
    padding: 12px 16px; /* Reduced from 24px */
    min-height: auto; /* Allow it to shrink */
}

.pager__subtitle {
    font-size: 0.75rem;
    margin-bottom: 4px;
}

.pager__title {
    font-size: 0.95rem; /* Slightly smaller */
    line-height: 1.3;
}