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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent: #F4A734;
    --accent-hover: #ffb84d;
    --border: #2a2a2a;
    --error: #ff4444;
    --success: #44ff88;
}

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

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

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

/* Navigation */
.main-nav, .admin-nav {
    background-color: var(--bg-secondary);
    border-bottom: 2px solid var(--accent);
    padding: 1rem 0;
}

.main-nav .container, .admin-nav .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    transition: color 0.2s;
}

/* Hamburger button — hidden on wide screens */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    color: var(--text-primary);
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

/* Animate to X when open */
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Main Content */
main {
    flex: 1;
    padding: 3rem 0;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.3;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 2rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--accent);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* Page Title */
.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--accent);
}

/* Books Grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.book-card {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.book-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(244, 167, 52, 0.2);
}

.book-cover {
    width: 100%;
    height: 350px;
    object-fit: cover;
    display: block;
}

.book-title {
    font-size: 1.25rem;
    font-weight: 700;
    padding: 1rem;
    padding-bottom: 0.5rem;
}

.book-title a {
    color: var(--text-primary);
}

.book-title a:hover {
    color: var(--accent);
}

.book-date {
    padding: 0 1rem 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Book Detail */
.book-detail-header {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.book-cover-large {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.book-detail-info h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.book-links {
    margin-top: 2rem;
}

.book-links h3 {
    margin-bottom: 1rem;
}

.book-links a {
    display: inline-block;
    margin: 0.5rem 0.5rem 0.5rem 0;
}

.book-description {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
}

.book-description h2 {
    color: var(--accent);
    margin-bottom: 1rem;
}

/* Blog */
.blog-list {
    max-width: 800px;
}

.blog-preview {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--accent);
}

.blog-preview h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.blog-preview h2 a {
    color: var(--text-primary);
}

.blog-preview h2 a:hover {
    color: var(--accent);
}

.post-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: block;
    margin-bottom: 1rem;
}

.post-excerpt {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.read-more {
    color: var(--accent);
    font-weight: 600;
}

.blog-post {
    max-width: 800px;
    background-color: var(--bg-secondary);
    padding: 3rem;
    border-radius: 8px;
}

.blog-post h1 {
    color: var(--accent);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.back-link {
    display: inline-block;
    margin-top: 3rem;
    font-weight: 600;
}

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

.markdown-content h1,
.markdown-content h2,
.markdown-content h3 {
    color: var(--accent);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

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

.markdown-content code {
    background-color: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

.markdown-content pre {
    background-color: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    margin-bottom: 1rem;
}

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

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

/* Contact Page */
.contact-page {
    max-width: 600px;
    margin: 0 auto;
}

.profile-image {
    text-align: center;
    margin-bottom: 2rem;
}

.profile-image img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent);
}

/* Forms */
.contact-form, .login-form, .admin-form {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--accent);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="url"],
.form-group input[type="number"],
.form-group input[type="datetime-local"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn:hover {
    background-color: var(--bg-secondary);
    color: var(--accent);
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
}

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

.btn-secondary {
    background-color: transparent;
    border-color: var(--accent);
    color: var(--accent);
}

.btn-secondary:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
}

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

.btn-danger:hover {
    background-color: #cc0000;
}

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

.btn-block {
    width: 100%;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* Footer */
.main-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: auto;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.social-links a {
    font-weight: 600;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
}

.alert-success {
    background-color: rgba(68, 255, 136, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background-color: rgba(255, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

/* No Content */
.no-content {
    text-align: center;
    color: var(--text-secondary);
    padding: 3rem;
}

/* Admin Styles */
.admin-body {
    background-color: var(--bg-primary);
}

.admin-main {
    padding: 2rem 0;
}

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

.admin-header h1 {
    color: var(--accent);
}

.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.dashboard-card {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.dashboard-card h2 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.dashboard-card p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.badge {
    display: inline-block;
    background-color: var(--accent);
    color: var(--bg-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
}

/* Admin Tables */
.admin-table {
    width: 100%;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
}

.admin-table thead {
    background-color: var(--bg-tertiary);
}

.admin-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--accent);
}

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

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

.table-thumb {
    width: 50px;
    height: 75px;
    object-fit: cover;
    border-radius: 4px;
}

/* Login Page */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background-color: var(--bg-primary);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-container h1 {
    text-align: center;
    color: var(--accent);
    margin-bottom: 2rem;
}

/* Messages */
.messages-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message-card {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--border);
}

.message-unread {
    border-left-color: var(--accent);
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.message-header strong {
    color: var(--accent);
}

.message-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.message-body {
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

/* Link Rows for Book Form */
.link-row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.current-file {
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        gap: 0;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-top: 1px solid var(--accent);
        border-bottom: 2px solid var(--accent);
        padding: 0.5rem 0;
        z-index: 100;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
        border-bottom: 1px solid var(--border, #eee);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    /* Make nav container relative so dropdown is anchored to it */
    .main-nav .container,
    .admin-nav .container {
        position: relative;
        flex-wrap: wrap;
    }
    
    .book-detail-header {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .book-cover-large {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .books-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .link-row {
        grid-template-columns: 1fr;
    }
    
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .admin-table {
        font-size: 0.875rem;
    }
    
    .admin-table th,
    .admin-table td {
        padding: 0.75rem 0.5rem;
    }
}