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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #ff8c00 0%, #ff6b35 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #ff8c00 0%, #ff6b35 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

header p {
    opacity: 0.9;
    font-size: 14px;
}

.content {
    padding: 30px;
}

.search-form {
    display: grid;
    gap: 24px;
    margin-bottom: 30px;
}

.form-group {
    display: grid;
    gap: 10px;
}

label {
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

textarea {
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-family: inherit;
    font-size: 14px;
    resize: vertical;
    min-height: 80px;
    transition: border-color 0.3s;
    width: 100%;
}

textarea:focus {
    outline: none;
    border-color: #ff8c00;
    box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
}

.supermarkets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #ff8c00;
    flex-shrink: 0;
}

.checkbox-group label {
    margin: 0;
    font-weight: 500;
    cursor: pointer;
    font-size: 14px;
}

.params {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

input[type="number"] {
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
    width: 100%;
}

input[type="number"]:focus {
    outline: none;
    border-color: #ff8c00;
    box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.1);
}

.button-group {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

button {
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-search {
    background: linear-gradient(135deg, #ff8c00 0%, #ff6b35 100%);
    color: white;
    flex: 1;
}

.btn-search:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 140, 0, 0.3);
}

.btn-search:active {
    transform: translateY(0);
}

.btn-clear {
    background: #f0f0f0;
    color: #333;
    padding: 12px 20px;
}

.btn-clear:hover {
    background: #e0e0e0;
}

.loading {
    display: none;
    text-align: center;
    padding: 20px;
    color: #ff8c00;
}

.spinner {
    border: 3px solid #f0f0f0;
    border-top: 3px solid #ff8c00;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.results {
    margin-top: 30px;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.results-header h2 {
    font-size: 18px;
    color: #333;
}

.results-count {
    background: #ff8c00;
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.results-table thead {
    background: #f5f5f5;
}

.results-table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: #333;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    user-select: none;
}

.results-table th:hover {
    background: #e8e8e8;
}

.results-table td {
    padding: 12px;
    border-top: 1px solid #f0f0f0;
    font-size: 14px;
}

.results-table tbody tr:hover {
    background: #f9f9f9;
}

.shop-badge {
    display: inline-block;
    background: #ff8c00;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.price {
    font-weight: 600;
    color: #ff8c00;
    font-size: 15px;
}

.score {
    color: #999;
    font-size: 13px;
}

.url-link {
    color: #ff8c00;
    text-decoration: none;
    word-break: break-all;
    font-size: 12px;
}

.url-link:hover {
    text-decoration: underline;
}

.no-results {
    text-align: center;
    padding: 40px 20px;
    color: #999;
}

.error {
    background: #fee;
    color: #c33;
    padding: 15px;
    border-radius: 6px;
    margin-top: 20px;
    border-left: 4px solid #c33;
}

@media (max-width: 768px) {
    .params {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .button-group {
        flex-direction: column;
    }

    .btn-clear {
        flex: 1;
    }

    .results-table {
        font-size: 12px;
    }

    .results-table th,
    .results-table td {
        padding: 8px;
    }
}

.results-table th {
    cursor: pointer;
    user-select: none;
}

.results-table th:hover {
    background: #e8e8e8;
}

.results-table th.sortable::after {
    content: ' ⇅';
    font-size: 11px;
    opacity: 0.5;
}

.results-table th.sort-asc::after {
    content: ' ↑';
    opacity: 1;
}

.results-table th.sort-desc::after {
    content: ' ↓';
    opacity: 1;
}