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

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #e31f23 0%, #e31f23 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 600;
}

.last-updated {
    font-size: 1.1em;
    opacity: 0.95;
}

.last-updated strong {
    font-weight: 600;
}

.table-wrapper {
    overflow-x: auto;
    padding: 20px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table thead {
    background: linear-gradient(135deg, black 0%, black 100%);
    color: white;
}

.data-table th {
    padding: 15px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tbody tr {
    border-bottom: 1px solid #e0e0e0;
    transition: background-color 0.2s;
}

.data-table tbody tr:hover {
    background-color: #f5f5ff;
}

.data-table tbody tr:last-child {
    border-bottom: none;
}

.data-table td {
    padding: 12px;
    vertical-align: middle;
}

.data-table td.price,
.data-table td.quantity {
    text-align: right;
    font-weight: 500;
}

.data-table td.price {
    color: #667eea;
}

.data-table td.quantity {
    color: #764ba2;
}

.no-data {
    text-align: center;
    padding: 40px !important;
    color: #999;
    font-style: italic;
}

.export-buttons {
    padding: 20px 30px 30px;
    display: flex;
    gap: 15px;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.btn-csv {
    background: linear-gradient(135deg, #e31f23 0%, black 100%);
    color: white;
}

.btn-xlsx {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    color: white;
}

/* Admin styles */
.admin-container {
    max-width: 500px;
    margin: 100px auto;
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.admin-container h2 {
    text-align: center;
    color: #667eea;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, #e31f23 0%, #764ba2 100%);
    color: white;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background: #efe;
    color: #3c3;
    border: 1px solid #cfc;
}

/* Dashboard styles */
.dashboard-container {
    max-width: 1200px;
    margin: 40px auto;
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.btn-logout {
    background: #dc3545;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
}

.upload-section {
    border: 2px dashed #667eea;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    background: #f8f9ff;
}

.file-input-wrapper {
    position: relative;
    display: inline-block;
}

.file-input-wrapper input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-input-label {
    display: inline-block;
    padding: 12px 30px;
    background: #e31f23;
    color: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.file-input-label:hover {
    background: #5568d3;
    transform: translateY(-2px);
}

.preview-table {
    margin-top: 30px;
    overflow-x: auto;
}

.mapping-section {
    margin-top: 20px;
    padding: 20px;
    background: #f8f9ff;
    border-radius: 8px;
}

.mapping-row {
    display: flex;
    gap: 20px;
    align-items: center;
    margin-bottom: 15px;
}

.mapping-row label {
    flex: 1;
    font-weight: 600;
}

.mapping-row select {
    flex: 2;
}