/**
 * Medium Pro - Main Stylesheet
 * Vanilla CSS implementation using CSS Variables
 */

:root {
    /* Colors - Light Mode Default */
    --bg-color: #ffffff;
    --text-color: #292929;
    --text-muted: #6b6b6b;
    --text-light: #a8a8a8;
    --border-color: #f2f2f2;
    --border-hover: #e0e0e0;
    --primary-color: #1a8917;
    /* Classic medium green accent */
    --primary-hover: #0f730c;
    --card-bg: #ffffff;
    --shadow-soft: 0 1px 4px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08);
    --error-color: #c94a4a;

    /* Layout Constants */
    --max-width: 1100px;
    --single-max-width: 680px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    --font-serif: Georgia, Cambria, "Times New Roman", Times, serif;
    --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* Base Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography Hierarchy */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

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

/* Buttons */
.btn,
button,
input[type="submit"] {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 99px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--text-color);
}

/* Layout Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

/* Header & Nav */
.site-header {
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    z-index: 100;
}

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

.site-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 900;
    letter-spacing: -1px;
    margin: 0;
}

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

.theme-toggle-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
}

.theme-toggle-btn:hover {
    color: var(--text-color);
}

/* Search Modal Component */
.search-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.85);
    /* Light translucent background for Medium feel */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 10vh;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

[data-theme="dark"] .search-modal-overlay {
    background-color: rgba(18, 18, 18, 0.85);
}

.search-modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.search-modal-container {
    background: var(--card-bg);
    border-radius: 12px;
    width: 100%;
    max-width: 650px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform 0.2s ease;
    border: 1px solid var(--border-color);
}

.search-modal-overlay.active .search-modal-container {
    transform: translateY(0);
}

.search-modal-header {
    display: flex;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.search-modal-icon {
    color: var(--text-muted);
    margin-right: 16px;
    flex-shrink: 0;
}

.search-modal-input {
    flex-grow: 1;
    border: none;
    background: transparent;
    font-size: 1.25rem;
    font-family: var(--font-sans);
    color: var(--text-color);
    outline: none;
    padding: 0;
}

.search-filter-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: rgba(26, 137, 23, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 16px;
    cursor: pointer;
}

[data-theme="dark"] .search-filter-icon {
    background-color: rgba(50, 168, 82, 0.2);
}

.search-filter-icon svg {
    stroke: var(--primary-color);
    fill: var(--primary-color);
}

.search-modal-body {
    padding: 24px;
    max-height: 50vh;
    overflow-y: auto;
}

.search-results-heading {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 16px;
    font-family: var(--font-sans);
}

.modal-search-result-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-color);
    transition: background 0.2s ease;
    margin: 0 -16px;
}

.modal-search-result-item:hover {
    background: var(--border-color);
}

.skeleton-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background-color: var(--border-color);
    margin-right: 16px;
    flex-shrink: 0;
}

.skeleton-text-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.skeleton-title {
    height: 14px;
    background-color: var(--border-color);
    border-radius: 4px;
    width: 60%;
    margin-bottom: 8px;
}

.skeleton-meta {
    height: 12px;
    background-color: var(--border-color);
    border-radius: 4px;
    width: 30%;
    opacity: 0.6;
}

/* Ensure real results fit the skeleton layout visually */
.real-result-title {
    font-weight: 500;
    font-size: 1rem;
    margin-bottom: 4px;
}

.real-result-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Post Grid / Cards */
.post-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

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

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

.post-card {
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid var(--border-color);
    height: 100%;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
}

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

.card-title {
    font-size: 1.1rem;
    line-height: 1.3;
    margin-bottom: 8px;
    font-family: var(--font-sans);
    font-weight: 700;
}

.card-excerpt {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: auto;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Reading Progress Bar */
.progress-container {
    width: 100%;
    height: 3px;
    background: transparent;
    position: absolute;
    bottom: -3px;
    left: 0;
}

.progress-bar {
    height: 3px;
    background: var(--primary-color);
    width: 0%;
}

/* Loader Array */
.page-loader {
    display: flex;
    justify-content: center;
    padding: var(--spacing-xl) 0;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* AJAX Save Button State */
.btn-save-post.saved {
    fill: var(--primary-color);
    stroke: var(--primary-color);
}

/* Single Post Readability Enhancements */
.entry-content {
    font-family: var(--font-serif);
    font-size: 20px;
    line-height: 1.8;
    color: var(--text-color);
}

.entry-content p {
    margin-bottom: 2em;
}

/* Drop Cap on first paragraph (Only on Single Posts) */
.single .entry-content>p:first-of-type::first-letter {
    float: left;
    font-size: 5rem;
    line-height: 0.8;
    padding-top: 8px;
    padding-right: 12px;
    font-weight: 700;
    color: var(--text-color);
    font-family: var(--font-serif);
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
    font-family: var(--font-sans);
    margin-top: 2em;
    margin-bottom: 1em;
    font-weight: 700;
}

.entry-content h2 {
    font-size: 2rem;
}

.entry-content h3 {
    font-size: 1.5rem;
}

.entry-content blockquote {
    border-left: 4px solid var(--text-color);
    padding-left: 24px;
    margin-left: 0;
    margin-right: 0;
    font-style: italic;
    color: var(--text-muted);
    font-size: 1.25rem;
    line-height: 1.6;
}

.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2em 0;
}

.entry-content a {
    color: var(--primary-color);
    border-bottom: 1px solid var(--primary-color);
}

.entry-content a:hover {
    color: var(--primary-hover);
    border-color: var(--primary-hover);
}

/* Meta Data Block */
.post-meta-block {
    display: flex;
    align-items: center;
    gap: 16px;
    font-family: var(--font-sans);
}

.author-avatar {
    border-radius: 50%;
    width: 48px;
    height: 48px;
    object-fit: cover;
}

.meta-details {
    display: flex;
    flex-direction: column;
}

.meta-details .byline a {
    font-weight: 600;
    color: var(--text-color);
}

.meta-time-read {
    font-size: 14px;
    color: var(--text-muted);
    display: flex;
    gap: 8px;
}

/* Author Bio Box */
.author-bio-box {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: var(--spacing-xl) 0;
}

.author-bio-box .bio-avatar img {
    border-radius: 50%;
    width: 80px;
    height: 80px;
}

.bio-title {
    margin: 0 0 8px 0;
    font-family: var(--font-sans);
    font-size: 1.2rem;
}

.bio-description {
    color: var(--text-muted);
    margin: 0 0 8px 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

.bio-link {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 500;
}

/* Nested Comments Styling - Minimal Accordion */
.comment-list .children {
    list-style: none;
    margin-left: 0;
    padding-left: 1.5rem;
    border-left: 2px solid var(--border-color);
    margin-top: 1rem;
    display: none;
    /* Hidden by default for accordion effect */
}

.comment-list .children.expanded {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    .comment-list .children {
        padding-left: 1rem;
    }
}

.view-replies-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: none;
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-sans);
    padding: 8px 0;
    transition: color 0.2s;
    margin-top: -8px;
    margin-bottom: 12px;
}

.view-replies-btn:hover {
    color: var(--primary-hover);
}

.view-replies-btn svg {
    transition: transform 0.2s ease;
}

.view-replies-btn.expanded svg {
    transform: rotate(180deg);
}

.reply a {
    display: inline-block;
    padding: 6px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 99px;
    color: var(--text-color);
    transition: all 0.2s;
}

.reply a:hover {
    border-color: var(--text-color);
    background: var(--border-color);
}

/* Specific styling for the comment form when replying inline */
#respond.comment-respond {
    margin-top: 24px;
    padding: 0;
    background: transparent;
    border: none;
}

#reply-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    font-family: var(--font-sans);
}

#cancel-comment-reply-link {
    font-size: 14px;
    color: var(--error-color);
    margin-left: 12px;
    font-weight: normal;
}