/* article.css - Professional Article Reader Styles */

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

:root {
    --primary-yellow: #FFD500;
    --secondary-purple: #800080;
    --bg-black: #000000;
    --text-primary: #FFFFFF;
    --text-secondary: #CCCCCC;
    --text-muted: #888888;
    --border-color: #333333;
    --highlight-color: rgba(255, 213, 0, 0.3);
    --search-match: rgba(255, 213, 0, 0.6);
    --current-match: rgba(128, 0, 128, 0.6);
}

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    background-color: var(--bg-black);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
}

/* Starfield Background */
#starfield {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--bg-black);
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    opacity: 0.6;
}

/* Article Navigation */
.article-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-btn {
    color: var(--primary-yellow);
    text-decoration: none;
    font-family: 'Arial', sans-serif;
    font-size: 0.95rem;
    transition: opacity 0.3s ease;
}

.back-btn:hover {
    opacity: 0.7;
}

.article-controls {
    display: flex;
    gap: 0.5rem;
}

.control-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    border-color: var(--primary-yellow);
    color: var(--primary-yellow);
}

.control-btn svg {
    stroke: currentColor;
}

/* Search Panel */
.search-panel {
    position: fixed;
    top: 70px;
    right: 2rem;
    background: rgba(0, 0, 0, 0.95);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    z-index: 999;
    display: flex;
    gap: 0.75rem;
    align-items: center;
    transition: all 0.3s ease;
}

.search-panel.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
}

#searchInput {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 0.9rem;
    width: 250px;
    outline: none;
}

#searchInput:focus {
    border-color: var(--primary-yellow);
}

.search-results {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

#searchCount {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: 'Arial', sans-serif;
}

.nav-match-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.nav-match-btn:hover {
    border-color: var(--primary-yellow);
    color: var(--primary-yellow);
}

.close-search {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0 0.5rem;
    transition: color 0.3s ease;
}

.close-search:hover {
    color: var(--text-primary);
}

/* Article Container */
.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Article Header */
.article-header {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.article-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-family: 'Arial', sans-serif;
    font-size: 0.85rem;
}

.article-category {
    color: var(--primary-yellow);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.article-date {
    color: var(--text-muted);
}

.article-title {
    font-size: 2.5rem;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.article-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 1.5rem;
}

.article-author {
    color: var(--text-muted);
    font-family: 'Arial', sans-serif;
    font-size: 0.95rem;
}

/* Table of Contents */
.table-of-contents {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 3rem;
}

.table-of-contents h3 {
    color: var(--primary-yellow);
    font-size: 1rem;
    margin-bottom: 1rem;
    font-family: 'Arial', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.table-of-contents ul {
    list-style: none;
}

.table-of-contents li {
    margin-bottom: 0.5rem;
}

.table-of-contents a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

.table-of-contents a:hover {
    color: var(--primary-yellow);
}

/* Article Content */
.article-content {
    font-size: 1.1rem;
    line-height: 1.9;
}

.article-content section {
    margin-bottom: 3rem;
}

.article-content h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    margin-top: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-yellow);
}

.article-content h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    margin-top: 1.5rem;
}

.article-content p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.article-content ul, .article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
    color: var(--text-secondary);
}

.article-content li {
    margin-bottom: 0.75rem;
}

.article-content strong {
    color: var(--text-primary);
}

/* Highlighted Text */
.user-highlight {
    background: var(--highlight-color);
    padding: 2px 0;
    border-radius: 2px;
    cursor: pointer;
}

/* Search Matches */
.search-match {
    background: var(--search-match);
    padding: 2px 4px;
    border-radius: 2px;
}

.current-match {
    background: var(--current-match);
    padding: 2px 4px;
    border-radius: 2px;
}

/* Article Footer */
.article-footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    background: rgba(255, 213, 0, 0.1);
    color: var(--primary-yellow);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-family: 'Arial', sans-serif;
}

.article-actions {
    display: flex;
    gap: 1rem;
}

.action-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: 'Arial', sans-serif;
    transition: all 0.3s ease;
}

.action-btn:hover {
    border-color: var(--primary-yellow);
    color: var(--primary-yellow);
}

/* Reading Progress Bar */
.reading-progress {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 1000;
}

.progress-bar {
    height: 100%;
    background: var(--primary-yellow);
    width: 0%;
    transition: width 0.1s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .article-nav {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }

    .article-controls {
        width: 100%;
        justify-content: space-between;
    }

    .search-panel {
        right: 1rem;
        left: 1rem;
        flex-direction: column;
        align-items: stretch;
    }

    #searchInput {
        width: 100%;
    }

    .article-container {
        padding: 2rem 1rem;
    }

    .article-title {
        font-size: 1.8rem;
    }

    .article-subtitle {
        font-size: 1rem;
    }

    .article-content {
        font-size: 1rem;
    }

    .article-content h2 {
        font-size: 1.5rem;
    }

    .article-content h3 {
        font-size: 1.2rem;
    }

    .article-actions {
        flex-direction: column;
    }

    .action-btn {
        width: 100%;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-black);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-yellow);
}