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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
}

/* Layout */
header {
    background: #fff;
    border-bottom: 1px solid #ddd;
    padding: 1rem;
}

header nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title {
    font-size: 1.25rem;
    font-weight: bold;
    color: #333;
}

.header-menu {
    display: flex;
    gap: 1rem;
    align-items: center;
}

header nav a {
    color: #0066cc;
    text-decoration: none;
}

header nav a:hover {
    text-decoration: underline;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #999;
    font-size: 0.875rem;
}

/* Alert */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    margin: 1rem 0;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background: #f8f8f8;
    font-weight: 600;
}

/* Form */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.2);
}

.form-group .error {
    color: #c00;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Button */
button, .btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
}

button, .btn-primary {
    background: #0066cc;
    color: #fff;
}

button:hover, .btn-primary:hover {
    background: #0052a3;
}

.btn-danger {
    background: #c00;
    color: #fff;
}

.btn-danger:hover {
    background: #a00;
}

/* ========================================
   デマンドレスポンス設定画面
   ======================================== */

.dr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 100%;
}

.dr-page-title {
    text-align: center;
    margin-bottom: 0.5rem;
}

.dr-description {
    color: #0066cc;
    margin-bottom: 1rem;
    text-align: center;
}

.dr-form-container {
    padding: 20px;
}

.dr-form {
    width: 100%;
    max-width: 1000px;
}

.dr-panel {
    background: #f0f8ff; /* 薄い青 (AliceBlue) に変更 */
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 1.5rem 100px;
    color: #000;
}

.dr-panel-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: stretch;
}

.dr-section {
    flex: 1;
    margin-bottom: 1rem;
}

.dr-panel-title {
    text-align: left;
    color: #000;
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border: none;
}

.dr-section-title {
    font-size: 1rem;
    color: #000;
    font-weight: bold;
    margin-bottom: 1rem;
}

.dr-row {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.dr-label {
    width: 150px;
    font-weight: bold;
    color: #000;
    padding-left: 0.5rem;
    flex-shrink: 0;
    margin-bottom: 0;
}

.dr-value, .dr-input-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-grow: 1;
}

.dr-display {
    background: #ffffff; /* 入力不可項目も白背景に戻す、あるいはさらに薄い色に */
    border: 1px solid #ccc;
    padding: 0.375rem 0.5rem;
    min-width: 80px;
    text-align: center;
    font-size: 1rem;
}

.dr-display-small {
    min-width: 60px;
}

.dr-unit {
    margin-left: 0.5rem;
    color: #000;
}

.dr-unit-small {
    margin: 0 0.25rem;
    color: #000;
    font-size: 1rem;
}

.dr-datetime {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.125rem;
}

.dr-input-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.dr-datetime-input {
    flex-wrap: wrap;
}

.dr-input {
    border: 1px solid #ccc;
    padding: 0.375rem 0.5rem;
    font-size: 1rem;
    text-align: center;
    background: #fff;
    border-radius: 4px;
}

.dr-input:focus {
    outline: none;
    border-color: #000;
}

.dr-input::placeholder {
    color: #ccc;
    font-style: normal;
}

.dr-input-power {
    width: 100px;
}

.dr-input-year {
    width: 70px;
}

.dr-input-month,
.dr-input-day,
.dr-input-time {
    width: 50px;
}

.dr-error {
    color: #c00;
    font-size: 0.875rem;
    margin-left: 1rem;
    white-space: nowrap;
}

.dr-actions {
    text-align: right;
    margin-top: 1rem;
    padding-top: 1rem;
}

.btn-setting {
    background: #00afe4; /* 画像に近い水色 */
    color: #fff;
    padding: 0.5rem 2rem;
    font-size: 1.25rem;
    font-weight: bold;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.btn-setting:hover {
    background: #0096c7;
}