/* ------------------------------
   基本設定
------------------------------ */
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    color: #333;
    background: #fafafa;
    line-height: 1.7;
}

h1, h2, h3 {
    margin: 0 0 12px;
    font-weight: 600;
}

.section {
    padding: 40px 20px;
    max-width: 700px;
    margin: 0 auto;
}

a {
    text-decoration: none;
}

/* ------------------------------
   ヘッダー
------------------------------ */
.hero {
    text-align: center;
    padding: 50px 20px;
    background: linear-gradient(135deg, #4da3ff, #0066cc);
    color: #fff;
}

.hero h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.hero .sub {
    font-size: 15px;
    opacity: 0.9;
}

.service-name {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 10px;
}

/* ------------------------------
   CTAボタン
------------------------------ */
.cta {
    display: inline-block;
    background: #0066cc;
    color: #fff;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: bold;
    transition: 0.2s;
    text-align: center;
}

.cta:hover {
    background: #004c99;
}

/* ------------------------------
   タブ
------------------------------ */
.send-tabs {
    display: flex;
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
}

.tab {
    flex: 1;
    padding: 12px;
    background: #e5e5e5;
    border: none;
    font-size: 16px;
    cursor: pointer;
    text-align: center;
}

.tab.active {
    background: #0066cc;
    color: #fff;
}

/* ------------------------------
   パネル
------------------------------ */
.send-panel {
    display: none;
}

.send-panel.active {
    display: block;
}

/* ------------------------------
   入力フォーム
------------------------------ */
.send-panel form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.send-panel input,
.send-panel textarea {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 16px;
    background: #fff;
}

textarea {
    height: 80px;
}

.send-btn {
    margin-top: 10px;
    width: 100%;
}

/* ------------------------------
   CSVアップロード
------------------------------ */
.csv-box {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
    text-align: center;
}

.csv-note {
    font-size: 14px;
    color: #666;
}

.csv-sample {
    margin-top: 20px;
}

.csv-sample pre {
    background: #f4f4f4;
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 14px;
}

/* ------------------------------
   ステータス
------------------------------ */
.status-box {
    margin-top: 40px;
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}

.status-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.status-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    font-size: 15px;
}

/* ------------------------------
   フッター
------------------------------ */
.footer {
    text-align: center;
    padding: 40px 20px;
    background: #eee;
}

.copy {
    margin-top: 20px;
    font-size: 14px;
    color: #666;
}

/* ------------------------------
   PCレイアウト
------------------------------ */
@media (min-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }
}