:root {
    --bg-color: #F8FBFE;
    --card-bg: #FFFFFF;
    --primary-color: #0077B6;
    --primary-light: #E0F2FE;
    --primary-hover: #0284C7;
    --text-main: #1E293B;
    --text-muted: #64748B;
    --border-color: #CBD5E1;
    --accent-cloud: #F0F9FF;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
}

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

.header {
    background-color: var(--card-bg);
    border-bottom: 1px solid #E2E8F0;
    padding: 16px 0;
}

.logo {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.hero {
    text-align: center;
    padding: 50px 0 30px;
}

.badge {
    display: inline-block;
    background-color: var(--primary-light);
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: #0F172A;
}

.hero-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.form-section {
    padding: 20px 0 60px;
}

.coaching-card {
    background-color: var(--card-bg);
    border: 1px solid #E2E8F0;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 4px 20px rgba(0, 119, 182, 0.05);
}

.form-group {
    margin-bottom: 32px;
}

.form-label {
    display: block;
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: 6px;
    color: #0F172A;
}

.form-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.required {
    color: #E11D48;
    font-size: 0.9rem;
}

/* 雲・バブル風タグのスタイル */
.cloud-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.cloud-tag {
    background-color: var(--accent-cloud);
    border: 1px solid #BAE6FD;
    color: var(--primary-color);
    padding: 10px 18px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 119, 182, 0.03);
}

.cloud-tag:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

.cloud-tag.selected {
    background-color: var(--primary-color);
    color: #FFFFFF;
    border-color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(0, 119, 182, 0.2);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    cursor: pointer;
}

.duration-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 10px;
}

.duration-card {
    border: 2px solid #E2E8F0;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.duration-card:hover {
    border-color: var(--primary-color);
}

.duration-card input {
    display: none;
}

.duration-card input:checked + .duration-content {
    color: var(--primary-color);
}

.duration-card:has(input:checked) {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
}

.duration-content .time {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.duration-content .price-tag {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.normal-price {
    /* 通常価格 */
}

.price-tag.strike {
    text-decoration: line-through;
    color: #94A3B8;
}

.free-price {
    color: #0284C7;
    font-weight: 700;
}

.text-input {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
    background-color: #FAFAFA;
}

.text-input:focus {
    border-color: var(--primary-color);
    background-color: #FFFFFF;
}

.submit-btn {
    width: 100%;
    background-color: var(--primary-color);
    color: #FFFFFF;
    border: none;
    padding: 16px;
    border-radius: 8px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s;
}

.submit-btn:hover {
    background-color: var(--primary-hover);
}

.success-message {
    text-align: center;
    padding: 20px;
}

.success-message h3 {
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 1.3rem;
}

.footer {
    text-align: center;
    padding: 30px 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

@media (max-width: 600px) {
    .duration-grid {
        grid-template-columns: 1fr;
    }
}