:root {
    --dudel-yellow: #ffd700;
    --dudel-yellow-light: #fff4cc;
    --dudel-yellow-dark: #e6c200;
    --text-dark: #333;
    --text-light: #666;
    --white: #fff;
    --gray-light: #f5f5f5;
    --gray: #ddd;
    --gray-dark: #999;
    --error: #dc3545;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--gray-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: var(--dudel-yellow);
    padding: 1rem 2rem;
    box-shadow: var(--shadow);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-dark);
    text-decoration: none;
}

nav a {
    color: var(--text-dark);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.3);
    transition: background 0.2s;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* Main Content */
main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

/* Footer */
footer {
    background: var(--text-dark);
    color: var(--white);
    text-align: center;
    padding: 1rem;
    margin-top: auto;
}

footer a {
    color: var(--dudel-yellow);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    font-family: inherit;
    line-height: 1.6;
    transition: all 0.2s;
    background: var(--dudel-yellow);
    color: var(--text-dark);
    vertical-align: middle;
}

.btn:hover {
    background: var(--dudel-yellow-dark);
}

.btn-primary {
    background: var(--dudel-yellow);
    color: var(--text-dark);
}

.btn-primary:hover {
    background: var(--dudel-yellow-dark);
}

.btn-secondary {
    background: var(--gray);
    color: var(--text-dark);
}

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

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

.btn-danger:hover {
    background: #c82333;
}

.btn-small {
    padding: 0.4rem 0.75rem;
    font-size: 0.875rem;
}

/* Home Page */
.home-container {
    text-align: center;
}

.search-section {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.search-section h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.tagline {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.search-box {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border: 2px solid var(--dudel-yellow);
    border-radius: 50px;
    outline: none;
    transition:
        border-color 0.2s,
        box-shadow 0.2s;
}

.search-box input:focus {
    border-color: var(--dudel-yellow-dark);
    box-shadow: 0 0 0 3px var(--dudel-yellow-light);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-top: 0.5rem;
    z-index: 100;
    text-align: left;
}

.search-result-list {
    list-style: none;
}

.search-result-list li {
    border-bottom: 1px solid var(--gray);
}

.search-result-list li:last-child {
    border-bottom: none;
}

.search-result-list a {
    display: block;
    padding: 1rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: background 0.2s;
}

.search-result-list a:hover {
    background: var(--dudel-yellow-light);
}

.search-result-list strong {
    display: block;
    margin-bottom: 0.25rem;
}

.search-preview {
    font-size: 0.875rem;
    color: var(--text-light);
}

.no-results {
    padding: 1rem;
    color: var(--text-light);
}

.no-results a {
    color: var(--dudel-yellow-dark);
}

/* Word Lists */
.word-lists {
    display: grid;
    grid-template-columns: repeat(2, minmax(300px, 1fr));
    gap: 2rem;
}

.word-list {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: left;
}

.word-list h2 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--dudel-yellow);
}

.word-list ul {
    list-style: none;
}

.word-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.word-list li:last-child {
    border-bottom: none;
}

.word-list a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
}

.word-list a:hover {
    color: var(--dudel-yellow-dark);
}

.view-count,
.updated {
    font-size: 0.875rem;
    color: var(--text-light);
}

.feed-link {
    font-size: 0.75rem;
    font-weight: normal;
    color: var(--text-light);
    text-decoration: none;
    background: var(--gray-light);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    vertical-align: middle;
    margin-left: 0.5rem;
}

.feed-link:hover {
    background: var(--dudel-yellow-light);
    color: var(--text-dark);
}

.empty {
    color: var(--text-light);
    font-style: italic;
    padding: 1rem 0;
}

/* Word Page */
.word-container {
    max-width: 800px;
    margin: 0 auto;
}

.word-article {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

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

.word-header h1 {
    font-size: 2.5rem;
    color: var(--text-dark);
}

.word-meta {
    color: var(--text-light);
    font-size: 0.875rem;
}

.word-definition {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.word-not-found {
    text-align: center;
    padding: 2rem;
}

.word-not-found p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

.word-hidden {
    text-align: center;
    padding: 2rem;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
}

.word-hidden p {
    color: var(--error);
    margin: 0;
}

.word-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray);
    flex-wrap: wrap;
    gap: 1rem;
}

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

.word-timestamps {
    font-size: 0.875rem;
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    text-align: right;
}

/* Edit Page */
.edit-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.edit-container h1 {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--dudel-yellow);
}

.edit-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-dark);
}

.form-group input,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition:
        border-color 0.2s,
        box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--dudel-yellow);
    box-shadow: 0 0 0 3px var(--dudel-yellow-light);
}

.form-group input[readonly] {
    background: var(--gray-light);
    color: var(--text-light);
}

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

.form-hint {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-error {
    background: #f8d7da;
    color: var(--error);
    border: 1px solid #f5c6cb;
}

/* History Page */
.history-container {
    max-width: 800px;
    margin: 0 auto;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.history-header h1 {
    font-size: 1.5rem;
}

.revision-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.revision-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.revision-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
}

.revision-number {
    color: var(--text-dark);
    font-weight: 600;
}

.revision-date {
    color: var(--text-dark);
}

.revision-editor {
    color: var(--text-light);
}

.revision-content {
    padding: 1rem 0;
    border-top: 1px solid var(--gray);
    border-bottom: 1px solid var(--gray);
    margin-bottom: 1rem;
}

.revision-footer {
    text-align: right;
}

/* Revision Detail Page */
.revision-container {
    max-width: 800px;
    margin: 0 auto;
}

.revision-detail-header {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px 8px 0 0;
    box-shadow: var(--shadow);
}

.revision-detail-header h1 {
    margin-bottom: 0.5rem;
}

.revision-meta {
    display: flex;
    gap: 1rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.revision-definition {
    background: var(--white);
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow);
}

.revision-actions {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0 0 8px 8px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        padding: 1rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    main {
        padding: 1rem;
    }

    .search-section {
        padding: 2rem 1rem;
    }

    .search-section h1 {
        font-size: 2rem;
    }

    .word-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .word-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .word-timestamps {
        text-align: left;
    }

    .history-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Markdown Content Styling */
.markdown-content {
    line-height: 1.8;
}

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

.markdown-content h1 {
    font-size: 1.75rem;
}
.markdown-content h2 {
    font-size: 1.5rem;
}
.markdown-content h3 {
    font-size: 1.25rem;
}
.markdown-content h4 {
    font-size: 1.1rem;
}

.markdown-content p {
    margin-bottom: 1rem;
}

.markdown-content ul,
.markdown-content ol {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.markdown-content li {
    margin-bottom: 0.25rem;
}

.markdown-content blockquote {
    border-left: 4px solid var(--dudel-yellow);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--text-light);
    font-style: italic;
}

.markdown-content code {
    background: var(--gray-light);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
    font-size: 0.9em;
}

.markdown-content pre {
    background: var(--text-dark);
    color: var(--white);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1rem 0;
}

.markdown-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.markdown-content a {
    color: var(--dudel-yellow-dark);
    text-decoration: underline;
}

.markdown-content a:hover {
    color: var(--text-dark);
}

.markdown-content hr {
    border: none;
    border-top: 2px solid var(--gray);
    margin: 2rem 0;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.markdown-content th,
.markdown-content td {
    border: 1px solid var(--gray);
    padding: 0.5rem 0.75rem;
    text-align: left;
}

.markdown-content th {
    background: var(--gray-light);
    font-weight: 600;
}

.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.markdown-content > *:first-child {
    margin-top: 0;
}

.markdown-content > *:last-child {
    margin-bottom: 0;
}

/* A-Z Index Page */
.az-container {
    max-width: 800px;
    margin: 0 auto;
}

.az-container h1 {
    margin-bottom: 1.5rem;
}

.az-nav {
    position: sticky;
    top: 0;
    background: var(--white);
    padding: 1rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    z-index: 10;
}

.az-nav-link {
    display: inline-block;
    width: 2.5rem;
    height: 2.5rem;
    /*line-height: 1.25rem;*/
    text-align: center;
    text-decoration: none;
    color: var(--text-dark);
    background: var(--gray-light);
    border-radius: 4px;
    font-weight: 500;
    transition:
        background 0.2s,
        color 0.2s;
}

.az-nav-link:hover {
    background: var(--dudel-yellow);
    color: var(--text-dark);
}

.letter-section {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    scroll-margin-top: 5rem;
}

.letter-section h2 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--dudel-yellow);
    font-size: 1.5rem;
}

.az-word-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 0.75rem;
}

.az-word-link {
    display: block;
    padding: 0.5rem 0.75rem;
    background: var(--gray-light);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-dark);
    transition:
        background 0.2s,
        color 0.2s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.az-word-link:hover {
    background: var(--dudel-yellow-light);
    color: var(--text-dark);
}

.empty-state {
    text-align: center;
    padding: 3rem;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.empty-state p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    .az-nav {
        gap: 0.25rem;
    }

    .az-nav-link {
        width: 2rem;
        height: 2rem;
        line-height: 2rem;
        font-size: 0.875rem;
    }

    .az-word-list {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}

/* Changelog Page */
.changelog-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.changelog-container h1 {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--dudel-yellow);
}