@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700&display=swap');

:root {
    --primary-color: #007bff;
    --bg-color: #f4f7f9;
    --text-color: #333;
    --card-bg: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 8px rgba(0,0,0,0.1);
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 700px;
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 30px;
    box-sizing: border-box;
}

header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

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

.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
}

input[type="text"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    box-sizing: border-box;
}

button[type="submit"] {
    width: 100%;
    padding: 14px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s;
}

button[type="submit"]:hover {
    background-color: #0056b3;
}

#loading {
    text-align: center;
    padding: 40px 0;
}
.spinner {
    border: 6px solid #f3f3f3;
    border-top: 6px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#result {
    margin-top: 30px;
}

#result-title {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
}

#summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
    background-color: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.summary-item {
    padding: 10px;
}

.summary-item .label {
    font-size: 14px;
    color: #666;
}

.summary-item .value {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

.table-container {
    overflow-x: auto;
}

#result-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

#result-table th, #result-table td {
    border: 1px solid var(--border-color);
    padding: 12px;
    text-align: center;
}

#result-table thead {
    background-color: #f2f2f2;
    font-weight: 700;
}

#result-table tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

#error {
    text-align: center;
    color: #d9534f;
    background-color: #f2dede;
    border: 1px solid #ebccd1;
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
}

.hidden {
    display: none;
}

footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 14px;
    color: #777;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}
footer a:hover {
    text-decoration: underline;
}