/* --- 全体のスタイルとCSS変数 --- */
:root {
    --primary-bg: #f4f7f9;
    --card-bg: #ffffff;
    --text-color: #333;
    --primary-color: #007bff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
    --badge-bg: #e7f3ff;
    --badge-text: #0056b3;
    --warn-badge-bg: #fff4e5;
    --warn-badge-text: #f57c00;
    --result-bg: #fff;
}

@media (prefers-color-scheme: dark) {
    :root{
        color-scheme: dark;
        --primary-bg: #112;
        --card-bg: #000;
        --text-color: #dde;
        --primary-color: #007bff;
        --border-color: #333;
        --shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
        --badge-bg: #0056b3;
        --badge-text: #e7f3ff;
        --warn-badge-bg: #f57c00;
        --warn-badge-text: #fff4e5;
        --result-bg: #224;
    }
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-color);
    margin: env(safe-area-inset-top, 0px) 0 env(safe-area-inset-bottom, 0px) 0;
    padding: .5rem;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: .5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
}

/* --- ヘッダー --- */
header {
    text-align: center;
    margin-bottom: 1rem;
}

button{
    user-select: none;
}

header h1 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.6rem;
}

/* --- フォームと入力欄 --- */
.input-section h2 {
    font-size: 1.1rem;
    margin-top: 1rem;
    border-bottom: 2px solid var(--primary-color);
}

.input-section p {
    font-size: 0.9rem;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group-inline {
    display: flex;
    gap: 1rem;
}

.input-group-inline .input-group {
    flex: 1;
}

.input-group label {
    display: block;
    font-weight: bold;
    font-size: 1rem;
    padding-left: .5rem;
    padding-right: .5rem;
}

.input-group input,
.input-group button {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background-color: transparent;
    border-radius: .5rem;
    font-size: 1rem;
    box-sizing: border-box;
}

.input-group *:focus{
    outline: var(--primary-color) 1pt solid;
    background-color: var(--card-bg);
}

.input-group input{
    text-align: right;
}

/* --- 結果表示 --- */
#result-section {
    padding: .5rem;
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
}

.result-final {
    background: var(--result-bg);
    border-radius: .5rem;
    text-align: center;
}

.result-final .result-label {
    display: block;
    font-size: 1rem;
    font-weight: bold;
}

.result-final .result-value {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--primary-color);
}

.result-breakdown h3 {
    text-align: center;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .5rem;
    border-bottom: 1px dashed var(--border-color);
}

.result-item:last-child {
    border-bottom: none;
    padding-bottom: .25rem;
}

.result-item .result-label {
    font-weight: 500;
}

.result-item .result-value {
    font-size: 1.2rem;
    font-family: monospace;
}

.status-badge {
    font-size: 0.8rem;
    padding: 0rem 0.25rem;
    border-radius: 12px;
    font-weight: bold;
}

.status-badge.limit-on {
    background: var(--warn-badge-bg);
    color: var(--warn-badge-text);
}

.status-badge.limit-off {
    background: var(--badge-bg);
    color: var(--badge-text);
}