:root {
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Poppins', sans-serif;
    --color-text: #555;
    --color-heading: var(--color-primary);
    --color-primary: #355e5e; /* Darkened for accessibility */
    --color-primary-medium: #3E6969; /* Darkened for accessibility */
    --color-primary-light: #eef6f6;
    --color-border: #e9e9e9;
    --color-bg-light: #fdfdfd;
    --container-width: 1200px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

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

/* --- Accessibility: Visible Focus --- */
*:focus-visible {
    outline: 3px solid var(--color-primary-medium);
    outline-offset: 2px;
}

body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.8;
    background-color:var(--color-bg-light);
    color: var(--color-text);
    padding: 0
}

.container {
    display: flex;
    flex-direction: column;
    max-width: var(--container-width);
    width: 100%;
    margin: 0 auto;
    background: var(--color-bg-light);
    /* border: 1px solid var(--color-border); */
    padding: 20px;
    border-radius: 4px;
}

header {
    text-align: left;
    padding-bottom: 25px;
    /* margin-bottom: 30px; */
    width: 100%;
}

header h1 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 100;
    letter-spacing: 1px;
    color: var(--color-heading);
}

.menu-toggle-button, .menu-close-button {
    display: none; /* Hidden by default */
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--color-primary);
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 1100;
}

.menu-close-button {
    top: 10px;
    right: 15px;
    font-size: 2.2rem;
}

main {
    display: flex;
    width: 100%;
}

/* --- Navigation & Filters --- */
nav#posts-list {
    flex: 0 0 260px;
    padding-right: 30px;
}

#tag-filter-container h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 15px;
    color: var(--color-heading);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
    margin-bottom: 10px;
    /* padding-bottom: 30px; */
}

.tag-button {
    font-family: var(--font-heading);
    font-weight: 400;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75em;
    transition: all 0.2s ease;
    display: flex;
    font-family: var(--font-heading);
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 400;
    margin: 0.01em;
    text-transform: uppercase;
    letter-spacing: 0.5px;
   
}

.tag-button:hover {
    background-color: var(--color-primary);
    color: #fff;
}

.tag-button.active {
    background-color: var(--color-primary);
    color: #fff;
}

nav#posts-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

nav#posts-list li {
    list-style: none;
}

nav#posts-list li a {
    display: block;
    padding: 12px 0 12px 15px;
    text-decoration: none;
    color: var(--color-primary-medium);
    transition: color 0.2s ease-in-out;
    font-family: var(--font-heading);
    font-weight: 400;
    font-size: 0.9rem;
    line-height: 1.4;
    position: relative;
}

nav#posts-list li a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background-color: var(--color-primary);
    transform: scaleY(0);
    transform-origin: center;
    transition: transform 0.2s ease-in-out;
}

nav#posts-list li a:hover {
    color: var(--color-primary);
}

nav#posts-list li a:hover::before,
nav#posts-list li a.active::before {
    transform: scaleY(1);
}

nav#posts-list li a.active {
    color: var(--color-primary);
    font-weight: 600;
}

#load-more-button {
    display: block;
    margin: 20px auto 0;
    padding: 6px 15px;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s ease-in-out;
}

#load-more-button:hover {
    background-color: var(--color-primary);
    color: #fff;
}

.post-date-nav {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.8em;
    color: #888;
}

/* --- Pagination --- */
#pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
}

#pagination-container button {
    padding: 2px 11px;
    font-family: var(--font-heading);
    font-size: 0.65rem;
    font-weight: 300;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s ease-in-out;
}

#pagination-container button:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: #fff;
}

#pagination-container button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

#pagination-container .page-info {
    font-family: var(--font-heading);
    font-size: 0.6rem;
    color: #888;
}

/* --- Article Content --- */
article#post-content {
    flex: 1;
    padding-left: 40px;
    padding-right: 60px;
}

article#post-content p{
    margin-bottom: 2em;
}

/* .post-header {
    margin-bottom: 20px;
} */

.post-meta {
    font-size: 0.8rem;
    text-align: right;
    margin-bottom: 5px;
    color: #888;
}

/* --- Footer --- */
footer {
    margin-top: 40px;
    padding-top: 20px;
    font-family: var(--font-heading);
    font-size: 0.8em;
    color: #888;
    text-align: center;
}

article#post-content h1 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 100;
    color: var(--color-heading);
    line-height: 1.2;
    margin-top: 0;
    /* margin-bottom: 0.5em; */
}

article#post-content hr {
    border: none;
    margin: 2em 0;
}



.tags-container {
    margin-bottom: 0px;
    padding-bottom: 20px;
}

.tag {
    display: inline-block;
    font-family: var(--font-heading);
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 400;
    margin: 0.15em;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

article#post-content h2,
article#post-content h3,
article#post-content h4 {
    font-family: var(--font-heading);
    color: var(--color-heading);
    margin-top: 1em;
    margin-bottom: 1em;
    font-weight: 100;
}

article#post-content h2 {
    font-size: 1.8rem;
}

article#post-content h3 {
    font-size: 1.5rem;
}
article#post-content h4 {
    font-size: 1.3rem;
    font-weight: 300;
}

article#post-content a {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--color-primary-light);
}

article#post-content a:hover {
    background-color: var(--color-primary-light);
}

article#post-content blockquote {
    border-left: 3px solid var(--color-primary);
    padding-left: 1.5em;
    margin: 2em 0;
    font-style: italic;
}

article#post-content code {
    background-color: #f5f5f5;
    border: 1px solid var(--color-border);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
}

article#post-content pre code {
    display: block;
    padding: 1em;
    overflow-x: auto;
}
  article#post-content ul,
  article#post-content ol {
      margin-left: 2rem;
  }

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .menu-toggle-button {
        display: block; /* Show hamburger on mobile */
    }

    .menu-close-button {
        display: block; /* Show close button inside nav on mobile */
    }

    nav#posts-list {
        position: fixed;
        top: 0;
        left: 0;
        height: 100%;
        width: 280px;
        background-color: var(--color-bg-light);
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        box-shadow: var(--shadow);
        padding: 20px;
        overflow-y: auto; /* Allow scrolling within the menu */
    }

    nav#posts-list.is-visible {
        transform: translateX(0);
    }

    body {
        padding: 0;
        font-size: 16px;
    }

    .container {
        padding: 15px;
    }

    main {
        flex-direction: column;
    }

  


    article#post-content {
        padding-left: 0;
        border-left: none;
    }

    header h1 {
        font-size: 1.5rem;
    }

    article#post-content h1 {
        font-size: 2rem;
    }
}