/**
 * Articles Empty State Component Styles
 * Displays helpful message when no articles are found
 * Requirements: 9.5
 */

/* Empty State Container */
.articles-empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    padding: var(--spacing-12, 48px) var(--spacing-6, 24px);
    background: var(--color-bg, #ffffff);
    border-radius: var(--radius-xl, 16px);
    border: 2px dashed var(--color-border, #e5e7eb);
}

/* Content Wrapper */
.articles-empty-state__content {
    max-width: 500px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-6, 24px);
}

/* Icon/Illustration */
.articles-empty-state__icon {
    font-size: 4rem;
    line-height: 1;
    opacity: 0.8;
    animation: floatIcon 3s ease-in-out infinite;
}

@keyframes floatIcon {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Title */
.articles-empty-state__title {
    margin: 0;
    font-size: var(--font-size-2xl, 24px);
    font-weight: var(--font-weight-bold, 700);
    color: var(--color-text, #111827);
    line-height: var(--line-height-tight, 1.25);
}

/* Message */
.articles-empty-state__message {
    margin: 0;
    font-size: var(--font-size-base, 16px);
    color: var(--color-text-secondary, #6b7280);
    line-height: var(--line-height-relaxed, 1.625);
    max-width: 400px;
}

/* Actions */
.articles-empty-state__actions {
    display: flex;
    gap: var(--spacing-4, 16px);
    flex-wrap: wrap;
    justify-content: center;
    margin-top: var(--spacing-2, 8px);
}

.articles-empty-state__button {
    min-width: 140px;
}

/* Suggestions */
.articles-empty-state__suggestions {
    margin-top: var(--spacing-4, 16px);
    padding: var(--spacing-6, 24px);
    background: var(--color-bg-secondary, #f9fafb);
    border-radius: var(--radius-lg, 12px);
    text-align: left;
    width: 100%;
}

.articles-empty-state__suggestions-title {
    margin: 0 0 var(--spacing-3, 12px) 0;
    font-size: var(--font-size-sm, 14px);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--color-text, #111827);
}

.articles-empty-state__suggestions-list {
    margin: 0;
    padding-left: var(--spacing-5, 20px);
    list-style-type: disc;
}

.articles-empty-state__suggestions-list li {
    margin-bottom: var(--spacing-2, 8px);
    font-size: var(--font-size-sm, 14px);
    color: var(--color-text-secondary, #6b7280);
    line-height: var(--line-height-normal, 1.5);
}

.articles-empty-state__suggestions-list li:last-child {
    margin-bottom: 0;
}

/* Compact Variant */
.articles-empty-state--compact {
    min-height: 300px;
    padding: var(--spacing-8, 32px) var(--spacing-4, 16px);
}

.articles-empty-state--compact .articles-empty-state__content {
    gap: var(--spacing-4, 16px);
}

.articles-empty-state--compact .articles-empty-state__icon {
    font-size: 3rem;
}

.articles-empty-state--compact .articles-empty-state__title {
    font-size: var(--font-size-xl, 20px);
}

.articles-empty-state--compact .articles-empty-state__message {
    font-size: var(--font-size-sm, 14px);
}

/* Inline Variant (no border, transparent background) */
.articles-empty-state--inline {
    background: transparent;
    border: none;
    min-height: 250px;
    padding: var(--spacing-8, 32px) var(--spacing-4, 16px);
}

/* Mobile Adjustments */
@media (max-width: 767px) {
    .articles-empty-state {
        min-height: 350px;
        padding: var(--spacing-8, 32px) var(--spacing-4, 16px);
    }
    
    .articles-empty-state__icon {
        font-size: 3rem;
    }
    
    .articles-empty-state__title {
        font-size: var(--font-size-xl, 20px);
    }
    
    .articles-empty-state__message {
        font-size: var(--font-size-sm, 14px);
    }
    
    .articles-empty-state__actions {
        flex-direction: column;
        width: 100%;
    }
    
    .articles-empty-state__button {
        width: 100%;
    }
    
    .articles-empty-state__suggestions {
        padding: var(--spacing-4, 16px);
    }
}

/* Tablet Adjustments */
@media (min-width: 768px) and (max-width: 1023px) {
    .articles-empty-state {
        padding: var(--spacing-10, 40px) var(--spacing-6, 24px);
    }
}

/* Dark Theme Adjustments */
[data-theme="dark"] .articles-empty-state {
    background: var(--color-bg-secondary, #1f2937);
    border-color: var(--color-border-dark, #374151);
}

[data-theme="dark"] .articles-empty-state__suggestions {
    background: var(--color-bg-tertiary, #111827);
}

/* Reduce Motion Preference */
@media (prefers-reduced-motion: reduce) {
    .articles-empty-state__icon {
        animation: none;
    }
}

/* Print Styles */
@media print {
    .articles-empty-state {
        display: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .articles-empty-state {
        border-width: 3px;
        border-style: solid;
    }
    
    .articles-empty-state__icon {
        filter: contrast(1.5);
    }
}

/* Loading State for Empty State (when transitioning) */
.articles-empty-state--loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Fade-in Animation */
.articles-empty-state {
    animation: fadeInUp 0.6s ease-out backwards;
}

/* Alternative Icons (can be used with data attributes) */
.articles-empty-state[data-icon="search"]::before {
    content: '🔍';
}

.articles-empty-state[data-icon="bookmark"]::before {
    content: '🔖';
}

.articles-empty-state[data-icon="article"]::before {
    content: '📝';
}

.articles-empty-state[data-icon="filter"]::before {
    content: '🎯';
}

.articles-empty-state[data-icon="empty"]::before {
    content: '📭';
}

/* Hover Effect on Action Buttons */
.articles-empty-state__button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg, 0 10px 25px rgba(0, 0, 0, 0.15));
}

.articles-empty-state__button:active {
    transform: translateY(0);
}