/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* 导航栏 */
.navbar {
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-brand a:hover {
    color: var(--primary-hover);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* 主内容区 */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* Flash 消息 */
.flash-messages {
    margin-bottom: 1.5rem;
}

.flash-message {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 0.5rem;
}

.flash-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.flash-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* Hero 区域 */
.hero-section {
    text-align: center;
    padding: 4rem 0;
    margin-bottom: 3rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
}

/* 类型筛选标签 */
.filter-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.filter-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.filter-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 记录类型徽章 */
.record-type-badge {
    display: inline-block;
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.record-type-diary {
    background: #fef3c7;
    color: #92400e;
}

.record-type-technical {
    background: #dbeafe;
    color: #1e40af;
}

.record-type-note {
    background: #e0e7ff;
    color: #3730a3;
}

.record-type-other {
    background: var(--bg-light);
    color: var(--text-light);
}

/* 文章网格 */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.post-card {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}

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

.post-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--bg-light);
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

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

.post-title a:hover {
    color: var(--primary-color);
}

.post-meta {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.post-excerpt {
    color: var(--text-light);
    margin-bottom: 1rem;
    flex: 1;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.read-more:hover {
    color: var(--primary-hover);
}

/* 文章详情页 */
.post-detail {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-md);
    max-width: 800px;
    margin: 0 auto;
}

.post-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.post-title-large {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.post-body {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.post-body h1,
.post-body h2,
.post-body h3,
.post-body h4,
.post-body h5,
.post-body h6 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.3;
}

.post-body h1 { font-size: 2rem; }
.post-body h2 { font-size: 1.75rem; }
.post-body h3 { font-size: 1.5rem; }

.post-body p {
    margin-bottom: 1.5rem;
}

.post-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
}

.post-body video {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
}

.post-body code {
    background-color: var(--bg-light);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.post-body pre {
    background-color: #1e293b;
    color: #f1f5f9;
    padding: 1.5rem;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 2rem 0;
}

.post-body pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.post-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1.5rem;
    margin: 2rem 0;
    color: var(--text-light);
    font-style: italic;
}

.post-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

.post-body table th,
.post-body table td {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.post-body table th {
    background-color: var(--bg-light);
    font-weight: 600;
}

.post-body ul,
.post-body ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.post-body li {
    margin-bottom: 0.5rem;
}

.post-body a {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.post-body a:hover {
    border-bottom-color: var(--primary-color);
}

.post-actions {
    display: flex;
    gap: 1rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    transition: all 0.2s;
}

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

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

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

.btn-secondary:hover {
    background-color: #475569;
    color: white;
}

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* 编辑器 */
.editor-container {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    max-width: 1000px;
    margin: 0 auto;
}

.editor-container h1 {
    margin-bottom: 2rem;
    font-size: 2rem;
}

.post-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* SimpleMDE 编辑器样式调整 */
.CodeMirror {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    min-height: 400px;
}

.editor-toolbar {
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: var(--radius) var(--radius) 0 0;
    background: var(--bg-light);
}

.editor-toolbar button {
    color: var(--text-color);
}

.editor-toolbar button:hover,
.editor-toolbar button.active {
    background: var(--bg-color);
    border-color: var(--border-color);
}

/* 管理后台 */
.admin-container {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.admin-header h1 {
    font-size: 2rem;
}

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

.admin-table th {
    text-align: left;
    padding: 1rem;
    background-color: var(--bg-light);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

.admin-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.admin-table tr:hover {
    background-color: var(--bg-light);
}

.admin-table a {
    color: var(--primary-color);
    text-decoration: none;
}

.admin-table a:hover {
    text-decoration: underline;
}

.actions {
    display: flex;
    gap: 0.5rem;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-light);
}

.empty-state a {
    color: var(--primary-color);
    text-decoration: none;
}

.empty-state a:hover {
    text-decoration: underline;
}

/* 页脚 */
.footer {
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--text-light);
}

/* 删除确认弹窗 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.modal-open {
    opacity: 1;
    visibility: visible;
}

.modal-box {
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1.5rem 2rem;
    max-width: 400px;
    width: 90%;
}

.modal-title {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.modal-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.25rem;
    justify-content: flex-end;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .post-detail {
        padding: 1.5rem;
    }

    .post-title-large {
        font-size: 1.75rem;
    }

    .admin-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .admin-table {
        font-size: 0.875rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 0.5rem;
    }

    .nav-links {
        gap: 1rem;
    }
}