/* Component-specific styles */

/* Navigation Buttons */
.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    background: transparent;
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
}

.nav-btn:hover {
    background-color: rgba(74, 144, 194, 0.1);
    transform: translateY(-1px);
}

.nav-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(74, 144, 194, 0.2);
}

.nav-btn.active {
    background-color: var(--color-accent-purple);
    color: white;
    border-color: var(--color-accent-purple);
    box-shadow: 0 2px 4px rgba(153, 102, 204, 0.2);
}

.nav-btn.has-content::before {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent-teal);
    border-radius: 50%;
    z-index: 1;
}

.nav-btn.active.has-content::before {
    background-color: white;
}

.nav-label {
    display: flex;
    align-items: center;
}

.nav-badge {
    background-color: var(--color-accent-teal);
    color: white;
    font-size: 0.625rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
    line-height: 1.2;
}

.nav-btn.active .nav-badge {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}

/* Standard Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    line-height: 1.4;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Button Variants */
.btn-primary {
    background-color: var(--color-accent-teal);
    color: white;
    border: 2px solid var(--color-accent-teal);
    font-weight: 500;
    letter-spacing: 0.025em;
}

.btn-primary:hover:not(:disabled) {
    background-color: #1a9b94;
    border-color: #1a9b94;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(32, 178, 170, 0.25);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(32, 178, 170, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    font-weight: 500;
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 144, 194, 0.25);
}

.btn-secondary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(74, 144, 194, 0.2);
}

/* Article Cards */
.card {
    background: var(--color-bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-border-light);
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
    border-color: var(--color-border);
}

/* Form Components */
.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: 0.875rem;
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border-light);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-family: inherit;
    transition: all 0.2s ease;
    background-color: var(--color-bg-white);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent-teal);
    box-shadow: 0 0 0 3px rgba(32, 178, 170, 0.1);
}

.form-input:invalid {
    border-color: #dc3545;
}

.form-input.error {
    border-color: #dc3545;
    background-color: #fef5f5;
}

.form-input.success {
    border-color: #28a745;
    background-color: #f0fff4;
}

.form-input::placeholder {
    color: var(--color-text-secondary);
}

/* Form validation messages */
.error-message {
    color: #dc3545;
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.success-message {
    color: #28a745;
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.form-hint {
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
    font-style: italic;
}

/* Form Layout */
.url-form {
    max-width: 500px;
    background: var(--color-bg-light);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    align-items: center;
}

/* Loading states for buttons */
.btn.loading {
    position: relative;
    pointer-events: none;
}

.loading-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: var(--spacing-xs);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success state styling */
.success-message.form-level {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

/* Feed List */
.feed-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feed-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--color-bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.feed-name {
    font-weight: 500;
    color: var(--color-text-primary);
}

.feed-url {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

/* Article List */
.article-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.article-item {
    background: var(--color-bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--color-primary-light);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.article-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-left-color: var(--color-accent-teal);
    transform: translateY(-2px);
}

.article-item.unreviewed {
    border-left-color: var(--color-accent-purple);
}

.article-item.reading-list {
    border-left-color: var(--color-accent-teal);
}

.article-item.archived {
    border-left-color: var(--color-text-secondary);
    opacity: 0.85;
}

.article-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.article-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    flex: 1;
}

.article-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
    display: block;
}

.article-title a:hover {
    color: var(--color-accent-teal);
    text-decoration: underline;
}

.article-status-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: var(--spacing-sm);
}

.article-status-badge.unreviewed {
    background-color: var(--color-accent-purple);
    color: white;
}

.article-status-badge.reading-list {
    background-color: var(--color-accent-teal);
    color: white;
}

.article-status-badge.archived {
    background-color: var(--color-text-secondary);
    color: white;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border-light);
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.article-meta-icon {
    opacity: 0.7;
    font-size: 0.875rem;
}

.article-reading-time {
    background-color: rgba(32, 178, 170, 0.1);
    color: var(--color-accent-teal);
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    gap: 4px;
}

.article-content-wrapper {
    position: relative;
    max-height: 120px;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.article-content-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px;
    background: linear-gradient(transparent, var(--color-bg-white));
    pointer-events: none;
}

.article-preview {
    color: var(--color-text-secondary);
    line-height: 1.6;
    overflow: hidden;
    position: relative;
}

.article-expand-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    background: var(--color-bg-white);
    color: var(--color-primary);
    border: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    font-size: 0.75rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    z-index: 2;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

.article-expand-btn:hover {
    color: var(--color-accent-teal);
    text-decoration: underline;
}

.article-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
    padding-top: var(--spacing-md);
}

.article-source {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-lighter);
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    margin-top: var(--spacing-md);
}

.article-source-icon {
    font-size: 1rem;
    color: var(--color-primary);
}

.article-source-name {
    font-weight: 500;
    color: var(--color-text-primary);
}

.article-source-url {
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
}

/* Article detail view */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background: var(--color-bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.article-detail-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.article-detail-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.article-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.article-detail-content {
    line-height: 1.8;
    color: var(--color-text-primary);
}

.article-detail-content p {
    margin-bottom: var(--spacing-md);
}

.article-detail-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
}

/* Loading and Status States */
.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--color-accent-teal);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Hidden utility class */
.hidden {
    display: none !important;
}

/* Modal Component */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    backdrop-filter: blur(3px);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s, transform 0.3s;
}

.modal-open {
    opacity: 1;
    transform: translateY(0);
}

.modal-content {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0;
    flex: 1;
    padding-right: var(--spacing-md);
}

.modal-close-btn {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-secondary);
    padding: var(--spacing-xs);
    line-height: 1;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.modal-close-btn:hover {
    background-color: var(--color-bg-lighter);
    color: var(--color-text-primary);
}

.modal-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-bg-lighter);
    font-size: 0.875rem;
}

.modal-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
}

.modal-meta-icon {
    opacity: 0.7;
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(90vh - 200px);
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.modal-keyboard-hints {
    display: flex;
    justify-content: center;
    padding-bottom: var(--spacing-xs);
}

.modal-keyboard-hints .keyboard-hint {
    color: var(--color-text-secondary);
    background-color: rgba(32, 178, 170, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    font-size: 0.75rem;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* Tab Navigation */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border-light);
    background-color: var(--color-bg-lighter);
}

.tab {
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    color: var(--color-text-secondary);
}

.tab:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--color-text-primary);
}

.tab-active {
    border-bottom-color: var(--color-accent-teal);
    color: var(--color-accent-teal);
}

/* Article Content Styling for Modal */
.article-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-primary);
}

.article-content p {
    margin-bottom: var(--spacing-md);
}

.article-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: var(--spacing-lg) auto;
    border-radius: var(--border-radius);
}

.article-content h1, 
.article-content h2, 
.article-content h3, 
.article-content h4 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
    color: var(--color-text-primary);
}

.article-content a {
    color: var(--color-accent-teal);
    text-decoration: none;
}

.article-content a:hover {
    text-decoration: underline;
}

.article-content blockquote {
    border-left: 4px solid var(--color-primary-light);
    padding-left: var(--spacing-md);
    margin-left: 0;
    margin-right: 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

.article-content pre,
.article-content code {
    background-color: var(--color-bg-lighter);
    border-radius: var(--border-radius);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-family: monospace;
    font-size: 0.9em;
    overflow-x: auto;
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

/* Extracted article styling */
.extracted-article {
    font-family: Georgia, serif;
    max-width: 100%;
    margin: 0 auto;
}

.extracted-article h1 {
    font-size: 1.8rem;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.extracted-article .article-source {
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border-light);
}

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

.extracted-article .article-content img {
    max-width: 100%;
    height: auto;
    margin: 1rem auto;
    border-radius: 4px;
}

.extracted-article .article-content figcaption {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin-top: 0.25rem;
}

.extracted-article .article-content figure {
    margin: 1.5rem 0;
}

.extracted-article .article-footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border-light);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
}

/* Filtering and Sorting */
.filter-bar {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--color-bg-lighter);
    border-radius: var(--border-radius);
}

.filter-bar .keyboard-hint {
    margin-left: auto;
    color: var(--color-text-secondary);
    background-color: rgba(32, 178, 170, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    display: flex;
    align-items: center;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.filter-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.filter-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    min-width: 120px;
}

.search-input {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    flex: 1;
    min-width: 200px;
}

.bulk-actions {
    margin-left: auto;
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Responsive adjustments for components */
@media (max-width: 768px) {
    .article-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .url-form {
        padding: var(--spacing-lg);
    }
    
    .section-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .modal-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .modal-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .bulk-actions {
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }
}