/* ========================================
   ログイン・新規会員登録ページ
   ======================================== */

/* ページラッパー */
.auth-page-wrap {
    max-width: 110rem;
    margin: 0 auto;
    padding: 6rem 4.2rem 12rem;
}

/* ========================================
   タブUI
   ======================================== */
.auth-tabs {
    display: flex;
    border-bottom: 0.3rem solid var(--border-color);
    margin-bottom: 0;
}

.auth-tab {
    flex: 1;
    padding: 2.8rem 2rem;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-light);
    background: none;
    border: none;
    border-bottom: 0.4rem solid transparent;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
    text-align: center;
    margin-bottom: -0.3rem;
}

.auth-tab:hover {
    color: var(--text-color);
}

.auth-tab.active {
    color: var(--text-color);
    border-bottom-color: var(--primary-color);
}

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

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

/* ========================================
   カード
   ======================================== */
.auth-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 1.4rem 1.4rem;
    padding: 5.6rem 5.6rem 4.2rem;
}

.auth-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.4rem;
}

.auth-description {
    font-size: 2.24rem;
    color: var(--text-light);
    margin-bottom: 4.2rem;
}

/* ========================================
   フォーム要素（ページ固有）
   ======================================== */
.auth-card input[type="text"],
.auth-card input[type="email"],
.auth-card input[type="password"],
.auth-card input[type="tel"],
.auth-card input[type="date"],
.auth-card select {
    width: 100%;
    padding: 2rem 2.4rem;
    font-size: 2.38rem;
    font-family: inherit;
    color: var(--text-color);
    background-color: #f9f9f9;
    border: 1px solid var(--border-color);
    border-radius: 1.05rem;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.auth-card input:focus,
.auth-card select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.35rem rgba(236, 196, 49, 0.15);
    background-color: #fff;
}

.auth-card input.error,
.auth-card select.error {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.35rem rgba(220, 53, 69, 0.1);
}

.auth-card input::placeholder {
    color: #bbb;
}

/* date入力のオーバーフロー防止（Safari対策） */
.auth-card input[type="date"] {
    -webkit-appearance: none;
    appearance: none;
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
}

/* ========================================
   区切り線
   ======================================== */
.form-divider {
    display: flex;
    align-items: center;
    margin: 4.2rem 0;
    gap: 2.1rem;
}

.form-divider::before,
.form-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--border-color);
}

.form-divider span {
    font-size: 2.1rem;
    font-weight: 600;
    color: var(--text-light);
    white-space: nowrap;
}

/* ========================================
   ラジオボタン・チェックボックス
   ======================================== */
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 2.8rem;
    margin-top: 0.7rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.84rem;
    cursor: pointer;
    font-size: 2.38rem;
    font-weight: 400;
}

.radio-label input[type="radio"] {
    -webkit-appearance: none;
    appearance: none;
    width: 2.8rem;
    height: 2.8rem;
    border: 0.25rem solid #ccc;
    border-radius: 50%;
    background-color: #fff;
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color 0.2s ease;
}

.radio-label input[type="radio"]:checked {
    border-color: var(--primary-color);
    border-width: 0.7rem;
}

.form-group-checkbox {
    margin-top: 4.2rem;
    margin-bottom: 4.2rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 1.4rem;
    cursor: pointer;
    font-size: 2.24rem;
    font-weight: 400;
    line-height: 1.6;
}

.checkbox-label input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 2.8rem;
    height: 2.8rem;
    margin-top: 0.35rem;
    border: 0.25rem solid #ccc;
    border-radius: 0.42rem;
    background-color: #fff;
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.checkbox-label input[type="checkbox"]:checked {
    border-color: var(--primary-color);
    background-color: var(--primary-color);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-size: 1.8rem;
    background-position: center;
    background-repeat: no-repeat;
}

.terms-link {
    color: var(--accent-blue);
    text-decoration: underline;
    font-weight: 600;
}

.terms-link:hover {
    opacity: 0.7;
}

/* ========================================
   パスワード忘れリンク
   ======================================== */
.forgot-password {
    text-align: right;
    margin-top: -1.4rem;
    margin-bottom: 3.5rem;
}

.forgot-password a {
    font-size: 2.1rem;
    color: var(--accent-blue);
}

.forgot-password a:hover {
    text-decoration: underline;
}

/* ========================================
   送信ボタン
   ======================================== */
.auth-submit-btn {
    display: block;
    width: 100%;
    padding: 2.8rem;
    font-size: 2.8rem;
    font-weight: 700;
    font-family: inherit;
    color: #fff;
    background-color: var(--primary-color);
    border: none;
    border-radius: 1.05rem;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

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

.auth-submit-btn:active {
    transform: scale(0.99);
}

.auth-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* ========================================
   タブ切替リンク
   ======================================== */
.auth-switch {
    text-align: center;
    margin-top: 3.5rem;
    padding-top: 3.5rem;
    border-top: 1px solid var(--border-color);
}

.auth-switch p {
    font-size: 2.24rem;
    color: var(--text-light);
}

.auth-switch-link {
    color: var(--accent-blue);
    font-weight: 600;
}

.auth-switch-link:hover {
    text-decoration: underline;
    opacity: 1;
}

/* ========================================
   完了画面
   ======================================== */
.auth-complete {
    padding: 8.4rem 0;
}

.complete-card {
    text-align: center;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 1.4rem;
    padding: 8.4rem 5.6rem;
}

.complete-icon {
    margin-bottom: 4.2rem;
    color: #28a745;
}

.complete-icon svg {
    width: 9.8rem;
    height: 9.8rem;
}

.complete-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 2.1rem;
}

.complete-message {
    font-size: 2.38rem;
    color: var(--text-light);
    margin-bottom: 5.6rem;
}

.complete-actions {
    display: flex;
    justify-content: center;
    gap: 2.8rem;
    flex-wrap: wrap;
}

.complete-btn {
    display: inline-block;
    padding: 2.1rem 4.2rem;
    font-size: 2.38rem;
    font-weight: 600;
    border-radius: 1.05rem;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.complete-btn:hover {
    opacity: 1;
}

.complete-btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.complete-btn-primary:hover {
    background-color: var(--primary-dark);
    color: #fff;
}

.complete-btn-secondary {
    background-color: transparent;
    color: var(--accent-blue);
    border: 0.26rem solid var(--accent-blue);
}

.complete-btn-secondary:hover {
    background-color: var(--accent-blue);
    color: #fff;
}

/* ========================================
   レスポンシブ - タブレット (768px以下)
   ======================================== */
@media (max-width: 768px) {
    .auth-page-wrap {
        padding: 4.2rem 2.8rem 10rem;
    }

    .auth-tab {
        font-size: 2.52rem;
        padding: 2.1rem 1.4rem;
    }

    .auth-card {
        padding: 4.2rem 3.5rem 3.5rem;
    }

    .auth-title {
        font-size: 3rem;
    }

    .auth-description {
        font-size: 2.1rem;
        margin-bottom: 3.5rem;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    /* iOS自動ズーム防止: font-size 16px未満でズームされるため */
    .auth-card input[type="text"],
    .auth-card input[type="email"],
    .auth-card input[type="password"],
    .auth-card input[type="tel"],
    .auth-card input[type="date"],
    .auth-card select {
        font-size: 16px;
    }

    .radio-group {
        gap: 2.1rem;
    }

    .complete-card {
        padding: 5.6rem 3.5rem;
    }

    .complete-icon svg {
        width: 8.4rem;
        height: 8.4rem;
    }

    .complete-title {
        font-size: 3rem;
    }

    .complete-actions {
        flex-direction: column;
        align-items: center;
    }

    .complete-btn {
        width: 100%;
        max-width: 40rem;
        text-align: center;
    }
}

/* ========================================
   レスポンシブ - スマホ (480px以下)
   ======================================== */
@media (max-width: 480px) {
    .auth-page-wrap {
        padding: 2.8rem 2.1rem 8.4rem;
    }

    .auth-tab {
        font-size: 2.38rem;
        padding: 1.68rem 1rem;
    }

    .auth-card {
        padding: 3.5rem 2.8rem 2.8rem;
    }

    .auth-title {
        font-size: 2.8rem;
    }

    .auth-description {
        font-size: 1.96rem;
    }

    .form-group label {
        font-size: 2.24rem;
    }

    .auth-card input[type="text"],
    .auth-card input[type="email"],
    .auth-card input[type="password"],
    .auth-card input[type="tel"],
    .auth-card input[type="date"],
    .auth-card select {
        padding: 1.68rem 2rem;
        font-size: 16px;
    }

    .auth-submit-btn {
        padding: 2.4rem;
        font-size: 2.52rem;
    }

    .radio-group {
        flex-direction: column;
        gap: 1.68rem;
    }

    .complete-icon svg {
        width: 7rem;
        height: 7rem;
    }

    .complete-title {
        font-size: 2.8rem;
    }

    .complete-message {
        font-size: 2.1rem;
    }
}