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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: #2c3e50;
    color: white;
    padding: 1.5rem 1rem;
    text-align: center;
}

header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

header p {
    font-size: 0.9rem;
    opacity: 0.8;
}

main {
    flex: 1;
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
    padding: 1rem;
}

.search-section {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.bank-search, .branch-search {
    margin-bottom: 1rem;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: #555;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

input[type="text"] {
    flex: 1;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    outline: none;
    transition: border-color 0.2s;
}

input[type="text"]:focus {
    border-color: #3498db;
}

button {
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background: #2980b9;
}

button:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

.selected-bank {
    background: #e8f4f8;
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.selected-bank .label {
    font-weight: 600;
    color: #555;
}

#selected-bank-name {
    font-weight: 600;
    color: #2c3e50;
}

.clear-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.85rem;
    background: #e74c3c;
    margin-left: auto;
}

.clear-btn:hover {
    background: #c0392b;
}

.results {
    margin-top: 1rem;
}

.result-item {
    padding: 0.75rem;
    border: 1px solid #eee;
    border-radius: 4px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.result-item:hover {
    background: #f8f9fa;
    border-color: #3498db;
}

.result-item:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

.result-item.selected {
    background: #e8f4f8;
    border-color: #3498db;
}

.result-code {
    font-weight: 700;
    color: #2c3e50;
    margin-right: 0.5rem;
}

.result-name {
    color: #333;
}

.result-kana {
    font-size: 0.85rem;
    color: #777;
    margin-top: 0.25rem;
}

.result-roma {
    font-size: 0.8rem;
    color: #999;
    font-style: italic;
}

.error {
    background: #fdecea;
    color: #c0392b;
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
    text-align: center;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: #777;
}

.hidden {
    display: none !important;
}

footer {
    text-align: center;
    padding: 1rem;
    color: #777;
    font-size: 0.85rem;
}

footer a {
    color: #3498db;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    header {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.25rem;
    }

    main {
        padding: 0.75rem;
    }

    .search-section {
        padding: 1rem;
    }

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

    button {
        width: 100%;
    }

    .selected-bank {
        flex-direction: column;
        align-items: flex-start;
    }

    .clear-btn {
        margin-left: 0;
        margin-top: 0.5rem;
    }
}