body {
    background-color: #f8fafc;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}
.alert.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.filter-card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
    margin-bottom: 25px;
}

.filter-form {
    display: flex;
    gap: 15px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-group-filter {
    flex: 1;
    min-width: 180px;
    display: flex;
    flex-direction: column;
}

.form-group-filter label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #475569;
    margin-bottom: 6px;
}

.form-group-filter input {
    padding: 0.6rem 0.85rem;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 0.875rem;
    outline: none;
    background: #f8fafc;
}

.form-group-filter input:focus {
    border-color: #2563eb;
    background: white;
}

.btn-filter {
    background: #2563eb;
    color: white;
    border: none;
    padding: 0.65rem 1.3rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.btn-filter:hover {
    background: #1d4ed8;
}

.data-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    border: 1px solid #e2e8f0;
    overflow: hidden;
}

.data-header {
    padding: 18px 24px;
    border-bottom: 1px solid #e2e8f0;
    background: #f8fafc;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.data-header h2 {
    margin: 0;
    font-size: 1.15rem;
    color: #1e293b;
    display: flex;
    align-items: center;
    gap: 8px;
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: #f1f5f9;
    padding: 12px 16px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    color: #475569;
    text-transform: uppercase;
    border-bottom: 2px solid #cbd5e1;
}

.data-table td {
    padding: 14px 16px;
    border-bottom: 1px solid #edf2f7;
    font-size: 0.875rem;
    color: #334155;
    vertical-align: top;
}

.data-table tr:hover {
    background: #f8fafc;
}

.btn-download-ppt {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0.4rem 0.75rem;
    background: #d97706;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-download-ppt:hover {
    background: #b45309;
    color: white;
}

.btn-delete-ppt {
    padding: 0.35rem 0.65rem;
    background: #fee2e2;
    color: #dc2626;
    border: 1px solid #fca5a5;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-delete-ppt:hover {
    background: #dc2626;
    color: white;
}