/* ===================================
   ログインオーバーレイ CSS
   =================================== */

.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.95) 0%, rgba(118, 75, 162, 0.95) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
    backdrop-filter: blur(10px);
}

.login-container {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    font-size: 28px;
    color: #2563eb;
    margin-bottom: 8px;
}

.login-header p {
    color: #64748b;
    font-size: 14px;
}

.login-overlay .form-group {
    margin-bottom: 20px;
}

.login-overlay label {
    display: block;
    margin-bottom: 8px;
    color: #334155;
    font-weight: 500;
    font-size: 14px;
}

.login-overlay input[type="text"],
.login-overlay input[type="email"],
.login-overlay input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    font-family: 'Noto Sans JP', sans-serif;
    transition: border-color 0.3s;
}

.login-overlay input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn-login-primary {
    width: 100%;
    padding: 14px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Noto Sans JP', sans-serif;
    margin-top: 10px;
}

.btn-login-primary:hover {
    background: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-login-primary:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    transform: none;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
}

.forgot-password,
.back-to-login {
    color: #2563eb;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
}

.forgot-password:hover,
.back-to-login:hover {
    color: #1e40af;
    text-decoration: underline;
}

.message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    display: none;
}

.message.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.message.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.message.show {
    display: block;
}

/* モバイル対応 */
@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
    }
    
    .login-header h2 {
        font-size: 24px;
    }
    
    .btn-login-primary {
        padding: 12px;
        font-size: 15px;
    }
}