/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    min-height: 100vh;
    padding: 20px;
    color: #2c3e50;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
}

/* Header */
h1 {
    text-align: center;
    color: #1e3c72;
    margin-bottom: 10px;
    font-size: 2.5em;
    font-weight: 700;
}

.subtitle {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 30px;
    font-size: 1.1em;
}

/* Instructions Box */
.instructions {
    background: #e8f4f8;
    border-left: 4px solid #3498db;
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 6px;
}

.instructions h3 {
    color: #2c3e50;
    margin-bottom: 10px;
}

.instructions p {
    color: #555;
    line-height: 1.6;
    margin-bottom: 8px;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

thead {
    background: linear-gradient(135deg, #2a5298 0%, #1e3c72 100%);
    color: white;
}

th {
    padding: 15px 10px;
    text-align: left;
    font-weight: 600;
    font-size: 0.95em;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

th:last-child {
    border-right: none;
}

tbody tr {
    border-bottom: 1px solid #ecf0f1;
    transition: background-color 0.2s ease;
}

tbody tr:hover {
    background-color: #f8f9fa;
}

tbody tr.total-row {
    background-color: #ffeaa7;
    font-weight: bold;
    border-top: 3px solid #fdcb6e;
}

tbody tr.total-row:hover {
    background-color: #ffeaa7;
}

td {
    padding: 12px 10px;
    border-right: 1px solid #ecf0f1;
}

td:last-child {
    border-right: none;
}

/* Table Cell Types */
.item-name {
    font-weight: 500;
    color: #2c3e50;
}

.rank {
    font-weight: 600;
    color: #e74c3c;
    text-align: center;
}

.reasoning {
    color: #555;
    font-size: 0.9em;
    line-height: 1.4;
}

.score-label {
    font-weight: 600;
    color: #2c3e50;
}

.score-cell {
    font-size: 1.3em;
    font-weight: bold;
    color: #2c3e50;
    text-align: center;
}

.difference {
    text-align: center;
    color: #555;
}

/* Input Fields */
input[type="number"] {
    width: 60px;
    padding: 8px;
    border: 2px solid #dfe6e9;
    border-radius: 6px;
    text-align: center;
    font-size: 1em;
    font-weight: 600;
    transition: all 0.3s ease;
}

input[type="number"]:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    opacity: 1;
}

/* Button */
.button-container {
    text-align: center;
    margin-top: 20px;
}

button {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 1.1em;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

button:active {
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 1.8em;
    }

    table {
        font-size: 0.85em;
    }

    th, td {
        padding: 8px 5px;
    }

    input[type="number"] {
        width: 50px;
        padding: 6px;
    }
}