@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #6366f1;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

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

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e8eef5 100%);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 24px;
}

header {
    text-align: center;
    margin-bottom: 48px;
    animation: fadeInDown 0.6s ease-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

header h1 {
    font-size: 3em;
    font-weight: 700;
    margin: 0 0 12px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

header .subtitle {
    color: var(--text-secondary);
    font-size: 1.2em;
    margin: 0;
    font-weight: 500;
}

.article-list {
    list-style: none;
    padding: 0;
    margin: 0 0 40px 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.article-list li {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: fadeInUp 0.5s ease-out backwards;
}

.article-list li:nth-child(1) { animation-delay: 0.1s; }
.article-list li:nth-child(2) { animation-delay: 0.2s; }
.article-list li:nth-child(3) { animation-delay: 0.3s; }
.article-list li:nth-child(4) { animation-delay: 0.4s; }
.article-list li:nth-child(5) { animation-delay: 0.5s; }
.article-list li:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-list li:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.article-title {
    font-size: 1.4em;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    word-break: break-word;
    display: block;
    transition: color 0.2s ease;
    line-height: 1.4;
}

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

.article-date {
    float: right;
    color: var(--text-muted);
    font-size: 0.92em;
    font-weight: 500;
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    margin-top: 4px;
}

.article-summary {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 0.95em;
    line-height: 1.6;
}

.archive-title-item {
    flex: 1;
    word-break: break-word;
}

.pagination {
    text-align: center;
    margin: 48px 0 0 0;
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    background: var(--bg-primary);
    font-weight: 500;
    transition: all 0.2s ease;
}

.pagination a:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.pagination .current {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border: 1px solid var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

footer {
    text-align: center;
    color: var(--text-muted);
    margin-top: 60px;
    padding: 32px 0;
    font-size: 0.95em;
    border-top: 1px solid var(--border-light);
}

.admin-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.admin-table th,
.admin-table td {
    border: 1px solid var(--border);
    padding: 14px 16px;
}

.admin-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

.op-link {
    margin-right: 12px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.op-link:hover {
    text-decoration: underline;
}

html, body {
    width: 100vw;
    max-width: 100vw;
    overflow-x: hidden !important;
}

img, table, pre, code {
    max-width: 100%;
    height: auto;
    word-break: break-word;
    overflow-x: auto;
}

a {
    word-break: break-word;
    overflow-wrap: break-word;
}

pre {
    font-family: 'Fira Code', 'Consolas', 'Menlo', 'Monaco', 'Liberation Mono', monospace;
    background: linear-gradient(135deg, #1e1e2e 0%, #2d2d3f 100%);
    color: #cdd6f4;
    border-radius: var(--radius-md);
    padding: 24px;
    margin: 24px 0;
    overflow: auto;
    border: 1px solid #313244;
    font-size: 14px;
    line-height: 1.7;
    box-shadow: var(--shadow-md);
    white-space: pre;
}

code {
    font-family: 'Fira Code', 'Consolas', 'Menlo', 'Monaco', 'Liberation Mono', monospace;
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    border-radius: 6px;
    padding: 0.2em 0.5em;
    font-size: 0.9em;
    display: inline;
    margin: 0 2px;
    white-space: pre-wrap;
    font-weight: 500;
}

pre code {
    background: none;
    color: inherit;
    border: none;
    padding: 0;
    margin: 0;
    font-size: inherit;
    border-radius: 0;
    display: block;
    white-space: pre;
}

pre code.hljs,
pre.hljs,
.hljs {
    background: linear-gradient(135deg, #1e1e2e 0%, #2d2d3f 100%) !important;
    color: #cdd6f4 !important;
    border-radius: var(--radius-md);
    overflow-x: auto;
    padding: 24px;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-section,
.hljs-link {
    color: #cba6f7;
}

.hljs-function .hljs-title,
.hljs-title,
.hljs-name {
    color: #89b4fa;
}

.hljs-string,
.hljs-meta,
.hljs-symbol,
.hljs-bullet,
.hljs-addition {
    color: #a6e3a1;
}

.hljs-comment,
.hljs-quote,
.hljs-deletion {
    color: #6c7086;
    font-style: italic;
}

.hljs-number,
.hljs-selector-attr,
.hljs-selector-pseudo {
    color: #fab387;
}

@media (max-width: 768px) {
    .container {
        max-width: 100vw;
        padding: 24px 16px;
    }

    header {
        margin-bottom: 32px;
    }

    header h1 {
        font-size: 2em;
        margin-bottom: 8px;
    }

    header .subtitle {
        font-size: 1em;
    }

    .article-list li {
        padding: 20px;
    }

    .article-title {
        font-size: 1.15em;
    }

    .article-date {
        float: none;
        display: inline-block;
        margin-top: 12px;
        font-size: 0.875em;
    }

    .pagination {
        margin-top: 32px;
        gap: 6px;
    }

    .pagination a,
    .pagination .current {
        min-width: 40px;
        height: 40px;
        padding: 0 12px;
        font-size: 0.9em;
    }

    footer {
        font-size: 0.9em;
        margin-top: 40px;
        padding: 24px 0;
    }

    .admin-table th,
    .admin-table td {
        padding: 10px 8px;
        font-size: 0.9em;
        word-break: break-word;
    }

    pre {
        font-size: 13px;
        padding: 16px;
    }

    code {
        font-size: 0.85em;
        padding: 0.15em 0.4em;
    }
}

.back {
    margin: 40px 0 0 0;
    text-align: left;
}

.back a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    border-radius: 50px;
    font-size: 1rem;
    text-decoration: none;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
}

.back a::before {
    content: '←';
    font-size: 1.2em;
    line-height: 1;
}

.back a:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: #fff;
    text-decoration: none;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.back a:active {
    transform: translateY(-1px);
}

.article-content {
    font-size: 1.1em;
    line-height: 1.8;
    color: var(--text-primary);
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    margin-top: 1.5em;
    margin-bottom: 0.75em;
    font-weight: 600;
    line-height: 1.3;
}

.article-content h1 {
    font-size: 2em;
}

.article-content h2 {
    font-size: 1.6em;
    border-bottom: 2px solid var(--border-light);
    padding-bottom: 0.5em;
}

.article-content h3 {
    font-size: 1.35em;
}

.article-content p {
    margin-bottom: 1.2em;
}

.article-content ul,
.article-content ol {
    margin-left: 1.5em;
    margin-bottom: 1.2em;
}

.article-content li {
    margin-bottom: 0.5em;
}

.article-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: 1.5em;
    margin: 1.5em 0;
    color: var(--text-secondary);
    font-style: italic;
    background: var(--bg-secondary);
    padding: 1.5em;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-content img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin: 1.5em 0;
}

.article-content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1.5em 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.article-content th,
.article-content td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.article-content th {
    background: var(--bg-secondary);
    font-weight: 600;
}

.article-content tr:last-child td {
    border-bottom: none;
}

header a {
    text-decoration: none;
    color: inherit;
    display: inline-block;
}

header a h1:hover {
    color: var(--primary);
}

.site-nav {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.site-nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 20px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid var(--border);
}

.site-nav a:hover {
    background: var(--bg-tertiary);
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.site-nav a.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    border-color: var(--primary);
}

.content-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 40px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 0.6s ease-out;
}

@media (max-width: 768px) {
    .site-nav {
        gap: 6px;
        margin-top: 16px;
    }

    .site-nav a {
        padding: 8px 16px;
        font-size: 0.9em;
    }

    .content-card {
        padding: 24px 20px;
    }
}

.view-header {
    text-align: left;
    margin-bottom: 24px;
}

.view-header a {
    text-decoration: none;
    color: inherit;
    display: inline-block;
}

.view-header h1 {
    font-size: 1.5em;
    text-align: left;
    margin: 0;
}

.view-article {
    animation: fadeInUp 0.6s ease-out;
}

.article-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--border-light);
}

.article-header h1 {
    font-size: 2em;
    margin-bottom: 16px;
    line-height: 1.3;
    font-weight: 700;
    color: var(--text-primary);
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.9em;
}

.meta-icon {
    font-size: 1em;
}

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    z-index: 1000;
    transition: width 0.1s ease;
}

.article-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 2px solid var(--border-light);
    flex-wrap: wrap;
    gap: 16px;
}

.share-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875em;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}

.share-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.view-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    border-radius: 50px;
    font-size: 1rem;
    text-decoration: none;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
}

.view-back-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: #fff;
    text-decoration: none;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.view-back-btn::before {
    content: '←';
    font-size: 1.2em;
    line-height: 1;
}

.article-content-wrapper {
    position: relative;
}

.archive-title {
    font-size: 2.5em;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.archive-section {
    margin-bottom: 40px;
}

.archive-yearmonth {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 12px;
}

.archive-yearmonth::before {
    content: '📅';
    font-size: 1.2em;
}

.archive-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.archive-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    transition: all 0.2s ease;
}

.archive-item:hover {
    border-color: var(--primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.archive-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.05em;
    transition: color 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.archive-link:hover {
    color: var(--primary);
}

.archive-date {
    color: var(--text-muted);
    font-size: 0.9em;
    white-space: nowrap;
    flex-shrink: 0;
}

.archive-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 1.1em;
}

.notfound-container {
    text-align: center;
    padding: 40px 20px;
    animation: fadeInUp 0.6s ease-out;
}

.notfound-code {
    font-size: 5em;
    font-weight: 700;
    background: linear-gradient(135deg, var(--danger) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    line-height: 1;
}

.notfound-text {
    font-size: 1.2em;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.notfound-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    border-radius: 50px;
    font-size: 1rem;
    text-decoration: none;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
}

.notfound-link:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: #fff;
    text-decoration: none;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.notfound-link::before {
    content: '←';
    font-size: 1.2em;
    line-height: 1;
}

@media (max-width: 768px) {
    .article-header {
        margin-left: 0;
        margin-right: 0;
        padding: 30px 16px;
    }

    .article-header h1 {
        font-size: 1.8em;
    }

    .article-content-wrapper::before {
        display: none;
    }

    .article-actions {
        flex-direction: column-reverse;
        align-items: stretch;
    }

    .share-buttons {
        justify-content: center;
    }

    .view-back-btn {
        justify-content: center;
        width: 100%;
    }

    .archive-title {
        font-size: 1.8em;
    }

    .archive-yearmonth {
        font-size: 1.2em;
    }

    .archive-link {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .notfound-code {
        font-size: 3.5em;
    }

    .notfound-text {
        font-size: 1em;
    }

    .notfound-link {
        justify-content: center;
        width: 100%;
    }
}