/* ============================================================
   RetroUI Neo-Brutalist Design System
   Inspired by retroui.dev — thick borders, hard shadows, bold type
   ============================================================ */

/* ---- CSS Custom Properties ---- */
:root,
[data-theme="light"] {
    --bg-primary:       #F0F4FF;
    --bg-secondary:     #FFFFFF;
    --text-primary:     #000000;
    --text-secondary:   #444444;
    --text-muted:       #666666;
    --border-color:     #000000;
    --border-width:     3px;
    --shadow-offset:    4px;
    --shadow-color:     #000000;
    --accent:           #FFD740;
    --accent-hover:     #FFC400;
    --accent-2:         #4C7CF5;
    --accent-2-hover:   #3B6AE0;
    --danger:           #E8453A;
    --code-bg:          #F5F5F5;
    --code-border:      #DDDDDD;
    --tag-bg:           #000000;
    --tag-text:         #FFD740;
    --card-bg:          #FFFFFF;
    --navbar-bg:        #FFD740;
    --footer-bg:        #FFFFFF;
    --radius:           5px;
    --font-body:        "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-mono:        "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
}

[data-theme="dark"] {
    --bg-primary:       #2B2A3C;
    --bg-secondary:     #1A1A1A;
    --text-primary:     #EBEBEB;
    --text-secondary:   #BBBBBB;
    --text-muted:       #888888;
    --border-color:     #000000;
    --border-width:     3px;
    --shadow-offset:    4px;
    --shadow-color:     #000000;
    --accent:           #FFD740;
    --accent-hover:     #FFC400;
    --accent-2:         #4C7CF5;
    --accent-2-hover:   #6B8FF5;
    --danger:           #E8453A;
    --code-bg:          #0D0D0D;
    --code-border:      #333333;
    --tag-bg:           #FFD740;
    --tag-text:         #000000;
    --card-bg:          #1E1E2E;
    --navbar-bg:        #FFD740;
    --footer-bg:        #1A1A1A;
    --radius:           5px;
    --font-body:        "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-mono:        "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
}

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

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

body {
    font-family: var(--font-body);
    font-weight: 500;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background 0.2s ease, color 0.2s ease;
}

a {
    color: var(--text-primary);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--accent-2);
}

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

/* ---- Container ---- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.main-content {
    flex: 1;
    padding-top: 2rem;
    padding-bottom: 3rem;
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p { margin-bottom: 1rem; }

strong { font-weight: 700; }

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--code-bg);
    padding: 0.15em 0.4em;
    border-radius: 3px;
    border: 1px solid var(--code-border);
}

pre {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    background: var(--code-bg);
    border: var(--border-width) solid var(--border-color);
    padding: 1.25rem;
    overflow-x: auto;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    box-shadow: 3px 3px 0 var(--shadow-color);
}

pre code {
    background: none;
    padding: 0;
    border: none;
    font-size: inherit;
}

blockquote {
    border-left: 4px solid var(--accent);
    padding: 0.75rem 1.25rem;
    margin: 1.5rem 0;
    background: var(--bg-secondary);
    font-style: italic;
    color: var(--text-secondary);
}

ul, ol {
    margin: 0 0 1.5rem 1.5rem;
}

li { margin-bottom: 0.35rem; }

/* ---- Neo-Brutalist Box ---- */
.neo-box {
    background: var(--card-bg);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: box-shadow 0.15s ease, transform 0.15s ease;
}

/* ---- Navbar ---- */
.navbar {
    background: var(--navbar-bg);
    border-bottom: var(--border-width) solid var(--border-color);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.navbar__brand {
    font-size: 1.5rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.03em;
    text-decoration: none;
    color: var(--text-primary);
}

.navbar__brand:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: 2px solid var(--border-color);
    padding: 6px 8px;
    cursor: pointer;
    box-shadow: 2px 2px 0 var(--shadow-color);
}

.navbar__toggle span {
    display: block;
    width: 22px;
    height: 3px;
    background: var(--text-primary);
}

.navbar__links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    list-style: none;
    margin: 0;
}

.navbar__links a {
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    color: var(--text-primary);
    padding: 0.25rem 0;
    border-bottom: 3px solid transparent;
    transition: border-color 0.15s ease;
}

.navbar__links a:hover,
.navbar__links a.active {
    border-bottom-color: var(--text-primary);
    color: var(--text-primary);
}

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.3rem 0.6rem;
    box-shadow: 2px 2px 0 var(--shadow-color);
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    line-height: 1;
}

.theme-toggle:hover {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 var(--shadow-color);
}

.theme-toggle:active {
    transform: translate(3px, 3px);
    box-shadow: none;
}

/* ---- Buttons ---- */
.btn {
    display: inline-block;
    padding: 0.65rem 1.4rem;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color);
    background: var(--accent);
    color: var(--text-primary);
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    text-align: center;
    letter-spacing: 0.01em;
}

.btn:hover {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--shadow-color);
    color: var(--text-primary);
    text-decoration: none;
}

.btn:active {
    transform: translate(var(--shadow-offset), var(--shadow-offset));
    box-shadow: none;
}

.btn--small {
    padding: 0.4rem 0.9rem;
    font-size: 0.85rem;
}

.btn--disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.btn--accent {
    background: var(--accent-2);
    color: #FFFFFF;
}

.btn--accent:hover {
    color: #FFFFFF;
}

/* ---- Post Cards ---- */
.post-card {
    margin-bottom: 1.75rem;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.post-card:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--shadow-color);
}

.post-card__title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.35rem;
    line-height: 1.3;
}

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

.post-card__title a:hover {
    text-decoration: underline;
    text-decoration-thickness: 3px;
    text-underline-offset: 5px;
    text-decoration-color: var(--accent);
    color: var(--text-primary);
}

.post-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.15rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.post-card__meta time {
    color: var(--text-muted);
}

.post-card__category {
    color: var(--accent-2);
    font-weight: 700;
    text-decoration: none;
}

.post-card__category:hover {
    text-decoration: underline;
    text-decoration-thickness: 2px;
}

.post-card__excerpt {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.post-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* ---- Tags ---- */
.tag {
    display: inline-block;
    background: var(--tag-bg);
    color: var(--tag-text);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2em 0.7em;
    text-decoration: none;
    border: 2px solid var(--border-color);
    box-shadow: 2px 2px 0 var(--shadow-color);
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    letter-spacing: 0.02em;
}

.tag:hover {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 var(--shadow-color);
    color: var(--tag-text);
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* ---- Home Layout ---- */
.home-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
    align-items: start;
}

.post-list__header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.post-list__header h1 {
    margin-bottom: 0;
    font-size: 2rem;
}

.post-list__count {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* ---- Pagination ---- */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1rem 0;
}

.pagination__info {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ---- Sidebar ---- */
.sidebar__section {
    margin-bottom: 1.5rem;
}

.sidebar__title {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    letter-spacing: -0.01em;
}

.sidebar__list {
    list-style: none;
    margin: 0;
}

.sidebar__list li {
    margin-bottom: 0.35rem;
}

.sidebar__list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.3rem 0;
    color: var(--text-primary);
}

.sidebar__list a:hover {
    color: var(--accent-2);
}

.sidebar__list .count {
    background: var(--bg-primary);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.1em 0.5em;
    border: 1px solid var(--border-color);
}

/* ---- Single Post ---- */
.post-full__header {
    margin-bottom: 1.5rem;
}

.post-full__title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.post-full__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.15rem;
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 600;
}

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

.post-full__category {
    color: var(--accent-2);
    font-weight: 700;
    text-decoration: none;
}

.post-full__category:hover {
    text-decoration: underline;
}

.post-full__body {
    font-size: 1.05rem;
    line-height: 1.8;
}

.post-full__body h1 { font-size: 2rem; margin-top: 2rem; }
.post-full__body h2 { font-size: 1.6rem; margin-top: 1.75rem; }
.post-full__body h3 { font-size: 1.3rem; margin-top: 1.5rem; }
.post-full__body h4 { font-size: 1.1rem; margin-top: 1.25rem; }

.post-full__body p {
    margin-bottom: 1.25rem;
}

.post-full__body ul,
.post-full__body ol {
    margin-bottom: 1.25rem;
}

.post-full__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
    margin-bottom: 2rem;
}

.post-full__footer {
    margin-top: 2rem;
}

/* ---- About Page ---- */
.about-page { padding: 2rem; }
.about-page h1 { margin-bottom: 1rem; }
.about-page h2 { margin-top: 2rem; margin-bottom: 0.75rem; }

.about-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1.5rem 0 2rem;
}

/* ---- Footer ---- */
.footer {
    background: var(--footer-bg);
    border-top: var(--border-width) solid var(--border-color);
    padding: 2rem 0;
    margin-top: auto;
}

.footer__inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.5rem;
    align-items: start;
}

.footer__brand strong {
    display: block;
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.footer__brand p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 0;
    max-width: 400px;
}

.footer__links {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.footer__links a {
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
}

.footer__copy {
    grid-column: 1 / -1;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding-top: 1rem;
    border-top: 1px solid var(--code-border);
}

.footer__copy p { margin-bottom: 0; }

/* ---- Admin ---- */
.admin-navbar {
    background: var(--bg-secondary);
}

/* 后台全宽 */
.admin-navbar ~ .main-content {
    max-width: none;
    padding: 2rem 2rem 3rem;
}

.admin-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.admin-header-row h1 {
    margin-bottom: 0;
}

.admin-flash {
    padding: 0.75rem 1.25rem;
    margin-bottom: 1.5rem;
    border: var(--border-width) solid var(--border-color);
    box-shadow: 3px 3px 0 var(--shadow-color);
    font-weight: 700;
    font-size: 0.9rem;
}

.admin-flash--error {
    background: #FFF0F0;
    color: var(--danger);
}

.admin-flash--success {
    background: #F0FFF0;
    color: #2E7D32;
}

/* Admin table */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.admin-table th {
    text-align: left;
    padding: 0.85rem 1.25rem;
    font-weight: 800;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-primary);
    border-bottom: var(--border-width) solid var(--border-color);
}

.admin-table td {
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--code-border);
    vertical-align: middle;
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-table tr:hover td {
    background: var(--bg-primary);
}

.admin-table__title {
    font-weight: 700;
}

.admin-table__title a {
    text-decoration: none;
}

.admin-table__title a:hover {
    text-decoration: underline;
    text-decoration-thickness: 2px;
}

.admin-table__date {
    white-space: nowrap;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.admin-table__actions {
    white-space: nowrap;
    display: flex;
    gap: 0.4rem;
}

/* Admin badges */
.admin-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 800;
    padding: 0.2em 0.6em;
    border: 2px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.admin-badge--published {
    background: #E8F5E9;
    color: #2E7D32;
}

.admin-badge--draft {
    background: #FFF3E0;
    color: #E65100;
}

.btn--danger {
    background: var(--danger);
    color: #FFFFFF;
    border-color: #B71C1C;
}

.btn--danger:hover {
    color: #FFFFFF;
}

/* Admin form */
.admin-form {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
    letter-spacing: 0.01em;
}

.form-input {
    width: 100%;
    padding: 0.6rem 0.85rem;
    font-size: 0.95rem;
    font-family: var(--font-body);
    font-weight: 500;
    border: var(--border-width) solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: 3px 3px 0 var(--shadow-color);
    transition: box-shadow 0.1s ease, transform 0.1s ease;
}

.form-input:focus {
    outline: none;
    transform: translate(1px, 1px);
    box-shadow: 2px 2px 0 var(--shadow-color);
}

.form-textarea {
    width: 100%;
    padding: 0.85rem;
    font-size: 0.95rem;
    font-family: var(--font-mono);
    font-weight: 500;
    line-height: 1.6;
    border: var(--border-width) solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: 3px 3px 0 var(--shadow-color);
    resize: vertical;
}

.form-textarea:focus {
    outline: none;
    transform: translate(1px, 1px);
    box-shadow: 2px 2px 0 var(--shadow-color);
}

.form-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.form-row {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
}

/* 旧响应式已合并至上方三档策略区域 */

/* ---- Code Copy Button ---- */
.code-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 700;
    font-family: var(--font-body);
    cursor: pointer;
    box-shadow: 2px 2px 0 var(--shadow-color);
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    opacity: 0;
}

pre:hover .code-copy-btn,
.code-copy-btn:focus-visible {
    opacity: 1;
}

.code-copy-btn:active {
    transform: translate(2px, 2px);
    box-shadow: none;
}

/* ---- Editor Split Layout ---- */
.editor-layout {
    display: grid;
    grid-template-columns: 1fr 700px;
    gap: 2rem;
    align-items: start;
}

.editor-left {
    min-width: 0;
}

.editor-right {
    position: sticky;
    top: 80px;
}

.editor-textarea {
    min-height: 500px;
    font-size: 0.9rem;
}

.editor-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.4rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.toolbar-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.upload-status {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* ---- Preview Panel ---- */
.preview-panel {
    padding: 0 !important;
    overflow: hidden;
}

.preview-tabs {
    display: flex;
    border-bottom: var(--border-width) solid var(--border-color);
    background: var(--bg-primary);
}

.preview-tab {
    flex: 1;
    padding: 0.65rem 1rem;
    font-weight: 700;
    font-size: 0.85rem;
    font-family: var(--font-body);
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

.preview-tab.active {
    background: var(--card-bg);
    color: var(--text-primary);
    border-bottom: 3px solid var(--accent);
}

.preview-tab:hover:not(.active) {
    background: var(--code-bg);
    color: var(--text-primary);
}

.preview-content {
    padding: 1.5rem;
    max-height: 70vh;
    overflow-y: auto;
}

.preview-placeholder {
    color: var(--text-muted);
    text-align: center;
    padding: 2rem;
    font-style: italic;
}

/* ---- Preview Content Styles ---- */
.preview-content .post-card {
    transform: none !important;
    margin-bottom: 0;
}

.preview-content .post-card:hover {
    transform: none !important;
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--shadow-color) !important;
}

.preview-content img,
.preview-content video {
    max-width: 100%;
    height: auto;
}

.preview-detail h1 { font-size: 1.8rem; }
.preview-detail h2 { font-size: 1.4rem; }
.preview-detail h3 { font-size: 1.15rem; }

/* ---- Post Card Thumbnail ---- */
.post-card--has-thumb {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.post-card__thumb {
    flex-shrink: 0;
    width: 320px;
    height: auto;
    max-height: 480px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-primary);
    position: relative;
}

.post-card__thumb img {
    width: 100%;
    height: auto;
    max-height: 480px;
    display: block;
}

.post-card__thumb video {
    width: 100%;
    height: auto;
    max-height: 480px;
    display: block;
}

/* 视频容器 */
.video-player {
    position: relative;
    cursor: pointer;
    background: #000;
}

.video-player video {
    display: block;
    width: 100%;
}

/* 居中播放按钮 */
.video-player__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: rgba(255, 215, 64, 0.92);
    border: 3px solid var(--border-color);
    border-radius: 50%;
    box-shadow: 3px 3px 0 rgba(0,0,0,0.4);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.video-player__play::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 14px 0 14px 24px;
    border-color: transparent transparent transparent #000;
    margin: 18px auto 0 24px;
}

/* 播放中隐藏按钮 */
.video-player.playing .video-player__play {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.3);
}

/* 悬停效果 */
.video-player:hover .video-player__play {
    transform: translate(-50%, -50%) scale(1.1);
    background: #FFD740;
}

.post-card__body {
    flex: 1;
    min-width: 0;
}

.post-card--has-thumb .post-card__title {
    font-size: 1.25rem;
}

/* ---- Inline Edit for Categories ---- */
.inline-edit-form {
    display: contents;
}

.inline-input {
    font-size: 0.85rem !important;
    padding: 0.4rem 0.6rem !important;
}

/* ============================================================
   Responsive — 三档策略：电脑 / 平板 / 手机
   ============================================================ */

/* ---- 平板 (640px – 1023px) ---- */
@media (min-width: 641px) and (max-width: 1023px) {
    .home-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .sidebar {
        order: -1;
    }
    .sidebar__section {
        display: inline-block;
        vertical-align: top;
        width: calc(50% - 0.75rem);
        margin-right: 1.5rem;
    }
    .sidebar__section:last-child {
        margin-right: 0;
    }
    .post-card--has-thumb {
        gap: 1rem;
    }
    .post-card__thumb {
        width: 320px;
        height: auto;
        max-height: 480px;
    }
    .editor-layout {
        grid-template-columns: 1fr;
    }
    .editor-right {
        position: static;
        order: 2;
    }
    .editor-left {
        order: 1;
    }
    .container {
        max-width: 100%;
        padding: 0 1.25rem;
    }
}

/* ---- 手机 (< 640px) ---- */
@media (max-width: 640px) {
    html { font-size: 15px; }

    .container {
        padding: 0 1rem;
    }

    .home-layout {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .sidebar {
        order: -1;
    }

    /* 卡片竖排：缩略图在上，文字在下 */
    .post-card--has-thumb {
        flex-direction: column;
        gap: 0.75rem;
    }
    .post-card__thumb {
        width: 100%;
        height: 200px;
    }
    .post-card--has-thumb .post-card__title {
        font-size: 1.15rem;
    }

    /* 导航 */
    .navbar__inner {
        flex-wrap: wrap;
    }
    .navbar__toggle {
        display: flex;
    }
    .navbar__links {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
        padding: 1rem 0;
        border-top: 2px solid var(--border-color);
        margin-top: 0.5rem;
    }
    .navbar__links.open {
        display: flex;
    }
    .navbar__links a {
        font-size: 1rem;
    }

    /* 编辑器全宽 */
    .editor-layout {
        grid-template-columns: 1fr;
    }
    .editor-right {
        position: static;
        order: 2;
    }
    .editor-left {
        order: 1;
    }

    /* 分页 */
    .pagination {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    /* 详情页 */
    .post-full__title {
        font-size: 1.5rem;
    }

    /* 页脚 */
    .footer__inner {
        grid-template-columns: 1fr;
    }

    /* 管理后台表格 */
    .admin-table__actions {
        flex-direction: column;
    }
    .form-row {
        flex-direction: column;
        gap: 0;
    }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.35rem; }
    .post-card__title { font-size: 1.25rem; }
    .neo-box { padding: 1rem; }
    .post-list__header h1 { font-size: 1.5rem; }
    .post-full__title { font-size: 1.8rem; }
}

/* ---- Lazy Load Posts ---- */
.post-card--hidden {
    display: none;
}

.load-more-wrap {
    text-align: center;
    padding: 1.5rem 0;
}

.load-more-btn {
    font-size: 1rem;
    padding: 0.75rem 2.5rem;
}

.load-more-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ---- Print ---- */
@media print {
    .navbar, .footer, .sidebar, .pagination, .post-full__footer,
    .theme-toggle, .navbar__toggle { display: none !important; }

    body { background: white; color: black; }
    .home-layout { display: block; }
    .neo-box { box-shadow: none; border: 1px solid #ccc; }
}