/*
================================================================================
OPENCONTRIBUTE - FEED SYSTEM STYLES
================================================================================
Thoughtful UI for different feed types:
- Posts: Casual social updates
- WorkPost: Professional portfolio showcase
- Achievement: Formal accomplishments with evidence
- Solution: Knowledge sharing & implementation guides
- ProblemStatement: Collaboration & help seeking
================================================================================
*/

/* ===== SHARED BASE STYLES ===== */
:root {
    --feed-post-color: #667eea;
    --feed-work-color: #f97316;
    --feed-achievement-color: #fbbf24;
    --feed-solution-color: #10b981;
    --feed-problem-color: #ef4444;
}

.feed-container {
    background: var(--bg-secondary);
    min-height: calc(100vh - 76px);
    padding-bottom: 3rem;
}

.feed-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.feed-title {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.feed-subtitle {
    margin: 0.25rem 0 0 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ===== TYPE-SPECIFIC HEADER COLORS ===== */
.feed-type-post .feed-title { color: var(--feed-post-color); }
.feed-type-work .feed-title { color: var(--feed-work-color); }
.feed-type-achievement .feed-title { color: var(--feed-achievement-color); }
.feed-type-solution .feed-title { color: var(--feed-solution-color); }
.feed-type-problem .feed-title { color: var(--feed-problem-color); }

/* ===== CTA BUTTONS ===== */
.btn-create-post {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.625rem 1.5rem;
    border-radius: 50px;
    border: none;
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-create-post:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    color: white;
}

.btn-create-work {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.btn-create-work:hover {
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

.btn-create-achievement {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.3);
}

.btn-create-achievement:hover {
    box-shadow: 0 6px 20px rgba(251, 191, 36, 0.4);
}

.btn-create-solution {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-create-solution:hover {
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-create-problem {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-create-problem:hover {
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

/* ===== FEED FILTERS ===== */
.feed-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.feed-filters .btn-group {
    flex-wrap: wrap;
}

/* ===== POST CARDS - BASE ===== */
.post-card {
    background: var(--card-bg);
    border-radius: 16px;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
}

.post-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

/* ===== POST TYPE INDICATORS ===== */
.post-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    transition: all 0.3s ease;
}

.post-card-post::before { background: var(--feed-post-color); }
.post-card-work::before { background: var(--feed-work-color); }
.post-card-achievement::before { background: var(--feed-achievement-color); }
.post-card-solution::before { background: var(--feed-solution-color); }
.post-card-problem::before { background: var(--feed-problem-color); }

/* ===== TYPE-SPECIFIC CARD STYLES ===== */

/* Work Posts - Professional Portfolio Style */
.post-card-work {
    border-left: 3px solid var(--feed-work-color);
}

.post-card-work .post-type-badge {
    background: linear-gradient(135deg, #f973160d 0%, #ea580c0d 100%);
    color: var(--feed-work-color);
    border: 1px solid #f9731633;
}

/* Achievement Posts - Prestigious Style */
.post-card-achievement {
    border-left: 3px solid var(--feed-achievement-color);
    background: linear-gradient(135deg, #fbbf240a 0%, transparent 100%);
}

.post-card-achievement .post-type-badge {
    background: linear-gradient(135deg, #fbbf240d 0%, #f59e0b0d 100%);
    color: #d97706;
    border: 1px solid #fbbf2433;
}

.post-card-achievement.verified {
    box-shadow: 0 0 0 2px #fbbf2433, 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* Solution Posts - Knowledge Base Style */
.post-card-solution {
    border-left: 3px solid var(--feed-solution-color);
}

.post-card-solution .post-type-badge {
    background: linear-gradient(135deg, #10b9810d 0%, #0596690d 100%);
    color: var(--feed-solution-color);
    border: 1px solid #10b98133;
}

/* Problem Posts - Urgent/Action Style */
.post-card-problem {
    border-left: 3px solid var(--feed-problem-color);
}

.post-card-problem .post-type-badge {
    background: linear-gradient(135deg, #ef44440d 0%, #dc26260d 100%);
    color: var(--feed-problem-color);
    border: 1px solid #ef444433;
}

.post-card-problem.severity-critical {
    box-shadow: 0 0 0 2px #ef444433, 0 1px 3px rgba(0, 0, 0, 0.08);
}

.post-card-problem.severity-high {
    box-shadow: 0 0 0 2px #f9731633, 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* ===== POST HEADER ===== */
.post-header {
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    margin-right: 0.875rem;
    border: 2px solid var(--border-color);
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea20, #764ba220);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: #667eea;
}

.author-info {
    flex: 1;
    min-width: 0;
}

.author-name-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.25rem;
}

.author-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.author-name:hover {
    color: #667eea;
}

.verified-badge {
    font-size: 1rem;
    flex-shrink: 0;
}

.author-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.ngo-badge {
    background: #e3f2fd;
    color: #1976d2;
}

.volunteer-badge {
    background: #e8f5e9;
    color: #2e7d32;
}

.post-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.meta-separator {
    margin: 0 0.25rem;
}

.post-menu-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.2s ease;
    width: 36px;
    height: 36px;
}

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

/* ===== POST TYPE BADGE ===== */
.post-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.375rem 0.75rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.post-type-badge i {
    font-size: 0.9rem;
}

/* ===== POST BODY ===== */
.post-body {
    padding: 0 1.5rem 1.25rem 1.5rem;
}

.post-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.post-title i {
    opacity: 0.8;
}

.post-text {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
    margin-bottom: 0.75rem;
}

.post-summary {
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-secondary);
    font-style: italic;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 3px solid var(--border-color);
    margin-bottom: 0.75rem;
}

.post-image {
    margin-top: 1rem;
    border-radius: 12px;
    overflow: hidden;
}

.post-image img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    display: block;
}

/* Image Gallery for Work Posts */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.image-gallery img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.image-gallery img:hover {
    transform: scale(1.02);
}

/* ===== METADATA GRID ===== */
.metadata-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    margin: 1rem 0;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 10px;
}

.metadata-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.metadata-item i {
    font-size: 1.1rem;
    opacity: 0.7;
}

.metadata-item strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Type-specific metadata colors */
.post-card-work .metadata-grid { background: #f973161a; }
.post-card-achievement .metadata-grid { background: #fbbf241a; }
.post-card-solution .metadata-grid { background: #10b9811a; }
.post-card-problem .metadata-grid { background: #ef44441a; }

/* ===== STAT BADGES ===== */
.stat-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1rem 0;
}

.stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.stat-badge i {
    font-size: 1rem;
}

.stat-badge-work { background: #f973161a; border-color: #f9731633; color: var(--feed-work-color); }
.stat-badge-achievement { background: #fbbf241a; border-color: #fbbf2433; color: #d97706; }
.stat-badge-solution { background: #10b9811a; border-color: #10b98133; color: var(--feed-solution-color); }
.stat-badge-problem { background: #ef44441a; border-color: #ef444433; color: var(--feed-problem-color); }

/* ===== EVIDENCE/DOCUMENTS SECTION ===== */
.evidence-section {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 10px;
    border-left: 3px solid #fbbf24;
}

.evidence-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.evidence-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.evidence-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.375rem 0.875rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
}

.evidence-link:hover {
    background: var(--bg-tertiary);
    border-color: #fbbf24;
    color: #d97706;
}

.evidence-link i {
    font-size: 1rem;
}

/* ===== STATUS BADGES ===== */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.status-open { background: #10b9811a; color: #059669; border: 1px solid #10b98133; }
.status-in-progress { background: #f973161a; color: #ea580c; border: 1px solid #f9731633; }
.status-solved { background: #6b72801a; color: #4b5563; border: 1px solid #6b728033; }
.status-archived { background: #f3f4f6; color: #9ca3af; border: 1px solid #e5e7eb; }

.severity-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.severity-critical { background: #ef44441a; color: #dc2626; border: 1px solid #ef444433; }
.severity-high { background: #f973161a; color: #ea580c; border: 1px solid #f9731633; }
.severity-medium { background: #fbbf241a; color: #d97706; border: 1px solid #fbbf2433; }
.severity-low { background: #6b72801a; color: #6b7280; border: 1px solid #6b728033; }

/* ===== POST FOOTER ===== */
.post-footer {
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
}

.post-actions-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-btn {
    background: none;
    border: none;
    padding: 0.625rem 1rem;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

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

.action-btn i {
    font-size: 1.1rem;
}

.action-label {
    font-weight: 500;
}

.action-count {
    font-size: 0.85rem;
    opacity: 0.8;
}

.like-btn.active {
    color: #e74c3c;
}

.like-btn.active:hover {
    color: #c0392b;
}

.action-btn.disabled {
    cursor: default;
    opacity: 0.6;
}

.action-btn.disabled:hover {
    background: none;
}

.view-btn {
    font-weight: 600;
}

/* ===== SIDEBAR ===== */
.sidebar-sticky {
    position: sticky;
    top: 90px;
}

.sidebar-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.sidebar-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    border: 1px solid var(--border-color);
}

.empty-state i {
    font-size: 4rem;
    opacity: 0.3;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .sidebar-sticky {
        position: relative;
        top: 0;
        margin-top: 2rem;
    }

    .feed-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .btn-create-post,
    .btn-create-work,
    .btn-create-achievement,
    .btn-create-solution,
    .btn-create-problem {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .post-header {
        padding: 1rem;
    }

    .post-body {
        padding: 0 1rem 1rem 1rem;
    }

    .post-footer {
        padding: 0.625rem 1rem;
    }

    .action-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    .action-label {
        display: none;
    }

    .metadata-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .feed-filters {
        flex-direction: column;
        align-items: stretch;
    }

    .feed-filters .btn-group {
        width: 100%;
    }
}