* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

h1 {
    text-align: center;
    color: #667eea;
    margin-bottom: 30px;
    font-size: 2.5em;
}

.form-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

label {
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
    text-transform: capitalize;
}

input[type="number"],
input[type="text"],
input[type="date"],
textarea {
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

input:focus, textarea:focus {
    outline: none;
    border-color: #667eea;
}

.extra-section {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
}

.extra-item {
    display: grid;
    grid-template-columns: 2fr 1fr 40px;
    gap: 10px;
    margin-bottom: 10px;
    align-items: center;
}

.btn-add {
    background: #28a745;
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-add:hover {
    background: #218838;
    transform: translateY(-2px);
}

.btn-remove {
    background: #dc3545;
    color: white;
    border: none;
    padding: 8px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
    width: 35px;
    height: 35px;
    transition: all 0.3s;
}

.btn-remove:hover {
    background: #c82333;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-danger {
    background: #dc3545;
    color: white;
    padding: 6px 12px;
    font-size: 14px;
}

.btn-warning {
    background: #ffc107;
    color: #333;
    padding: 6px 12px;
    font-size: 14px;
}

.btn-info {
    background: #17a2b8;
    color: white;
    padding: 6px 12px;
    font-size: 14px;
}

.filter-section {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
    align-items: end;
    flex-wrap: wrap;
}

.table-container {
    overflow-x: auto;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

th {
    background: #667eea;
    color: white;
    padding: 15px;
    text-align: left;
    font-weight: 600;
    position: sticky;
    top: 0;
}

td {
    padding: 12px 15px;
    border-bottom: 1px solid #e0e0e0;
}

tr:hover {
    background: #f8f9fa;
}

.total-cell {
    font-weight: bold;
    color: #667eea;
    font-size: 16px;
}

.action-buttons {
    display: flex;
    gap: 5px;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 30px;
    cursor: pointer;
    color: #666;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 10px;
    margin: 10px 0;
}

.info-label {
    font-weight: 600;
    color: #666;
}

.export-section {
    display: flex;
    gap: 10px;
    align-items: end;
}