/* ============================================
   SERTIFIKAT PAGE STYLES
   Styles khusus untuk halaman Sertifikat
   ============================================ */

/* ============================================
   FILTER BAR
   ============================================ */
.filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    background: var(--card);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.5rem 1rem;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: inherit;
    line-height: 1.5;
}

.filter-tab:hover {
    border-color: var(--sky);
    color: var(--sky);
    background: rgba(14, 165, 233, 0.05);
}

.filter-tab.active {
    background: var(--sky);
    border-color: var(--sky);
    color: #fff;
}

.filter-actions {
    display: flex;
    align-items: center;
}

.filter-actions .form-select {
    min-width: 180px;
    height: auto;
    font-size: 0.875rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    background-color: var(--background);
    font-family: inherit;
    cursor: pointer;
    line-height: 1.5;
}

.filter-actions .form-select:focus {
    border-color: var(--sky);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
    outline: none;
}

/* ============================================
   CERTIFICATE STATS
   Statistik ringkas sertifikat
   ============================================ */
.cert-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.cert-stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all var(--transition-base);
}

.cert-stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.cert-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.cert-stat-icon.total {
    background: linear-gradient(135deg, rgba(202, 138, 4, 0.15) 0%, rgba(234, 179, 8, 0.15) 100%);
    color: #ca8a04;
}

.cert-stat-icon.from-class {
    background: rgba(14, 165, 233, 0.1);
    color: var(--sky);
}

.cert-stat-icon.from-exam {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.cert-stat-info h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.125rem;
}

.cert-stat-info p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin: 0;
}

/* ============================================
   CERTIFICATE CARDS GRID
   Grid untuk menampilkan kartu sertifikat
   ============================================ */
.cert-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

/* ============================================
   CERTIFICATE CARD
   Styling untuk kartu sertifikat
   ============================================ */
.cert-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.cert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: #ca8a04;
}

.cert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #ca8a04 0%, #eab308 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.cert-card:hover::before {
    opacity: 1;
}

/* ============================================
   CERTIFICATE BADGE
   Badge untuk tipe sertifikat
   ============================================ */
.cert-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
}

.cert-badge.from-class {
    background: rgba(14, 165, 233, 0.9);
    color: #fff;
}

.cert-badge.from-exam {
    background: rgba(139, 92, 246, 0.9);
    color: #fff;
}

/* ============================================
   CERTIFICATE THUMBNAIL
   Area preview sertifikat
   ============================================ */
.cert-thumbnail {
    position: relative;
    height: 140px;
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 50%, #fcd34d 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.cert-thumbnail-icon {
    font-size: 3rem;
    color: #ca8a04;
    opacity: 0.7;
    transition: all var(--transition-base);
}

.cert-thumbnail-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.cert-card:hover .cert-thumbnail-overlay {
    opacity: 1;
}

.cert-card:hover .cert-thumbnail-icon {
    transform: scale(1.1);
    opacity: 0.9;
}

.btn-cert-preview {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-base);
    transform: scale(0.8);
}

.cert-card:hover .btn-cert-preview {
    transform: scale(1);
}

.btn-cert-preview:hover {
    background: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: scale(1.1) !important;
}

/* ============================================
   CERTIFICATE CONTENT
   Konten kartu sertifikat
   ============================================ */
.cert-content {
    padding: 1.25rem;
}

.cert-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cert-subtitle {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.cert-subtitle i {
    color: var(--text-muted);
    flex-shrink: 0;
    margin-top: 2px;
}

.cert-date {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.cert-date i {
    color: #22c55e;
}

/* ============================================
   CERTIFICATE ACTIONS
   Tombol aksi untuk kartu sertifikat
   ============================================ */
.cert-actions {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-light);
}

.cert-actions .btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    white-space: nowrap;
    min-height: 38px;
}

.cert-actions .btn i {
    font-size: 0.875rem;
}

/* ============================================
   FADE IN ANIMATION
   ============================================ */
.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
    opacity: 0;
}

.fade-in:nth-child(1) {
    animation-delay: 0.1s;
}

.fade-in:nth-child(2) {
    animation-delay: 0.15s;
}

.fade-in:nth-child(3) {
    animation-delay: 0.2s;
}

.fade-in:nth-child(4) {
    animation-delay: 0.25s;
}

.fade-in:nth-child(5) {
    animation-delay: 0.3s;
}

.fade-in:nth-child(6) {
    animation-delay: 0.35s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   RESPONSIVE STYLES
   ============================================ */
@media (max-width: 768px) {
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
        padding: 0.75rem;
    }

    .filter-tabs {
        overflow-x: auto;
        padding-bottom: 0.5rem;
        width: 100%;
    }

    .filter-tab {
        white-space: nowrap;
        flex-shrink: 0;
    }

    .filter-actions {
        width: 100%;
    }

    .filter-actions .form-select {
        width: 100%;
    }

    .cert-cards-grid {
        grid-template-columns: 1fr;
    }

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

    .cert-actions .btn {
        width: 100%;
    }

    .cert-stats-grid {
        grid-template-columns: 1fr;
    }

    .cert-stat-card {
        padding: 1rem;
    }

    .cert-stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .cert-thumbnail {
        height: 120px;
    }

    .cert-thumbnail-icon {
        font-size: 2.5rem;
    }
}