/* file: style.css */
:root {
    --ncp-primary: #46757E;
    --ncp-primary-dark: #375a61;
    --ncp-bg: #ffffff;
    --ncp-bg-alt: #f8fafc;
    --ncp-text: #1e293b;
    --ncp-text-light: #64748b;
    --ncp-border: #e2e8f0;
}

.ncp-wrapper {
    all: initial; /* テーマの干渉をリセット */
    display: block;
    box-sizing: border-box;
}

.number-converter-container {
    max-width: 600px;
    margin: 40px auto;
    padding: 30px;
    background: var(--ncp-bg);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

.number-converter-container h2 {
    font-size: 1.5rem;
    color: var(--ncp-text);
    text-align: center;
    margin-bottom: 30px;
}

/* 入力エリアの崩壊を防ぐスタイル */
.ncp-field-group {
    display: flex;
    border: 2px solid var(--ncp-border);
    border-radius: 10px;
    overflow: hidden;
    transition: border-color 0.3s;
    background: #fff;
}

.ncp-field-group:focus-within {
    border-color: var(--ncp-primary);
}

#ncp-input-base {
    flex: 0 0 120px;
    background: var(--ncp-bg-alt);
    border: none;
    border-right: 1px solid var(--ncp-border);
    padding: 12px;
    font-size: 0.95rem;
    color: var(--ncp-primary);
    font-weight: 600;
    cursor: pointer;
}

#ncp-input-number {
    flex: 1; /* 残りの幅をすべて埋める */
    min-width: 0; /* Flex内の崩壊を防止 */
    padding: 12px 15px;
    font-size: 1.1rem;
    border: none !important; /* テーマの上書きを強制防止 */
    outline: none !important;
    color: var(--ncp-text);
    display: block !important; /* 確実に表示 */
    height: auto;
    background: transparent;
}

.ncp-button-group {
    margin-top: 10px;
    display: flex;
    justify-content: flex-end;
}

.ncp-secondary-btn {
    background: none;
    border: none;
    color: var(--ncp-text-light);
    cursor: pointer;
    font-size: 0.85rem;
    text-decoration: underline;
}

/* 結果表示 */
.ncp-results-container {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ncp-result-item {
    background: var(--ncp-bg-alt);
    padding: 15px;
    border-radius: 10px;
    border: 1px solid transparent;
    transition: 0.2s;
}

.ncp-result-item:hover {
    border-color: var(--ncp-border);
    background: #fff;
}

.ncp-label {
    font-size: 0.75rem;
    font-weight: bold;
    color: var(--ncp-text-light);
    margin-bottom: 5px;
    display: block;
}

.ncp-value-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.ncp-value {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1rem;
    color: var(--ncp-primary);
    word-break: break-all;
}

.ncp-copy-btn {
    background: var(--ncp-primary);
    color: #fff;
    border: none;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: 0.2s;
}

.ncp-copy-btn:hover { background: var(--ncp-primary-dark); }
.ncp-copy-btn.copied { background: #10b981; }

.ncp-placeholder-msg, .ncp-error {
    text-align: center;
    padding: 40px 0;
    color: var(--ncp-text-light);
}
.ncp-error { color: #ef4444; font-size: 0.9rem; }

@media (max-width: 480px) {
    .ncp-field-group { flex-direction: column; }
    #ncp-input-base { flex: none; border-right: none; border-bottom: 1px solid var(--ncp-border); }
}