:root {
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #212529;
    --accent-color: #007bff;
    --border-color: #dee2e6;
    --success-color: #28a745;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #121212;
        --card-bg: #1e1e1e;
        --text-color: #e0e0e0;
        --border-color: #333;
    }
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 1.5rem;
    margin: 0;
}

#last-updated {
    font-size: 0.875rem;
    color: #6c757d;
}

/* Controls */
.controls {
    margin-bottom: 15px;
    display: flex;
    gap: 10px;
}

input[type="text"] {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    flex-grow: 1;
    background: var(--card-bg);
    color: var(--text-color);
}

/* Table */
.table-container {
    overflow-x: auto;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: rgba(0,0,0,0.03);
    font-weight: 600;
    cursor: pointer;
    user-select: none;
}

th:hover {
    background-color: rgba(0,0,0,0.06);
}

tr:hover {
    background-color: rgba(0,0,0,0.02);
}

.price {
    font-weight: 600;
    font-family: "SF Mono", "Menlo", monospace;
}

.low-price {
    color: var(--success-color);
}

.platform-badge {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: bold;
}

.platform-amazon { background-color: #ff9900; color: #000; }
.platform-flipkart { background-color: #2874f0; color: #fff; }

a.product-link {
    color: var(--accent-color);
    text-decoration: none;
}
a.product-link:hover { text-decoration: underline; }

.loading {
    text-align: center;
    padding: 40px;
    color: #6c757d;
}